WO2016011616A1 - 业务报文转发方法及装置 - Google Patents

业务报文转发方法及装置 Download PDF

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Publication number
WO2016011616A1
WO2016011616A1 PCT/CN2014/082809 CN2014082809W WO2016011616A1 WO 2016011616 A1 WO2016011616 A1 WO 2016011616A1 CN 2014082809 W CN2014082809 W CN 2014082809W WO 2016011616 A1 WO2016011616 A1 WO 2016011616A1
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WO
WIPO (PCT)
Prior art keywords
service
packet
service chain
information
classifier
Prior art date
Application number
PCT/CN2014/082809
Other languages
English (en)
French (fr)
Inventor
倪慧
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/082809 priority Critical patent/WO2016011616A1/zh
Priority to EP14897917.2A priority patent/EP3157206B1/en
Priority to CN201480017021.2A priority patent/CN105453493B/zh
Priority to JP2017503602A priority patent/JP6457064B2/ja
Publication of WO2016011616A1 publication Critical patent/WO2016011616A1/zh
Priority to US15/410,885 priority patent/US10250501B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/74Address processing for routing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/302Route determination based on requested QoS
    • H04L45/306Route determination based on the nature of the carried application
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2212/00Encapsulation of packets
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/38Flow based routing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/64Routing or path finding of packets in data switching networks using an overlay routing layer

Definitions

  • the embodiments of the present invention relate to communication technologies, and in particular, to a service packet forwarding method and device.
  • GGSN Gateway GPRS Support Node
  • SF Service Function
  • the uplink service packet sent from the GGSN to the Internet first flows through the classifier.
  • the classifier matches the service packet with the classification rule on the classifier.
  • the service packet includes multiple packet features, such as Source port number, source IP, destination port number, destination IP, and service type.
  • Classification rules include multiple entries. Each entry includes a matching condition, a Chain Identifier (CID), and a Service Index (SI), and a correspondence between the matching condition, CID, and SI.
  • the matching condition includes each packet feature corresponding to the service packet, and a target value corresponding to each packet feature. The matching condition is used to determine whether the feature value of each message feature corresponding to the service message matches the target value corresponding to each message feature in the matching condition.
  • the CID is used to identify the forwarding service chain.
  • the SI is used to identify the number of SFs in the forwarding service chain corresponding to the CID. If the packet characteristics of the service packet match the matching conditions in the entry, the classifier encapsulates the CID and the SI corresponding to the matching condition into the service packet, and encapsulates the CID.
  • the service packet with the SI is sent to the forwarder, so that the forwarder forwards the service packet.
  • the forwarding rule is stored in the forwarder.
  • the forwarding rule includes the SF identification information.
  • the SF is the SF included in the service chain identified by the CID.
  • the forwarder obtains the forwarding rule corresponding to the CID according to the CID carried in the service packet, and according to the forwarding rule.
  • the identification information of the medium SF sends the service packet to the SF. For example, the forwarder sends the service packet to the functional entity 1, the functional entity 2, and the functional entity 3, and then sends the service packet to the external network device
  • the embodiment of the invention provides a method and a device for forwarding a service packet, so as to reduce the classification rule and the forwarding rule entry, and save storage resources.
  • An aspect of an embodiment of the present invention provides a classifier, including:
  • a first receiving module configured to receive a first service packet, where the first service packet includes a packet feature
  • a first processing module configured to generate a second service packet according to the packet feature, where the second service packet includes the first service packet and at least two service chain information, where each service chain information is used Indicate the route of a service chain;
  • the first sending module is configured to send the second service packet to the forwarder, so that the forwarder forwards the second service packet according to the at least two service chain information.
  • a repeater including:
  • a second receiving module configured to receive a second service packet sent by the classifier, where the second service packet includes a first service packet and at least two service chain information, where each service chain information is used to indicate a service chain
  • the first service packet is a packet received by the classifier, and the first service packet includes a packet feature.
  • a second sending module configured to forward the second service packet according to the at least two service chain information.
  • Another aspect of the embodiments of the present invention provides a classifier, including:
  • a third receiving module configured to receive a third service packet, where the third service packet includes a backhaul service packet and a first service chain information, where the first service chain information is used to indicate a route of the first service chain ;
  • a third processing module configured to generate a fourth service packet according to the first service chain information and the packet feature of the backhaul service packet, where the fourth service packet includes the backhaul service packet And second service chain information, where the second service chain information is used to indicate a path of the second service chain
  • a third sending module configured to send the fourth service packet to the forwarder, so that the forwarder forwards the fourth service packet according to the second service chain information.
  • a repeater including:
  • a fourth receiving module configured to receive a fourth service packet sent by the classifier, where the fourth service packet includes a backhaul service packet and a second service chain information, where the second service chain information is used to indicate a route of the second service chain, where the fourth service packet is a packet generated by the classifier according to the first service chain information and the packet feature of the backhaul service packet, where the first service chain information is used.
  • the first service chain information and the backhaul service packet are information carried in the third service packet received by the classifier;
  • a fourth sending module configured to forward the fourth service packet according to the second service chain information.
  • Another aspect of an embodiment of the present invention provides a service message forwarding system including the classifier, and/or the repeater.
  • Another aspect of the present invention provides a service packet forwarding method, including: a classifier receiving a first service packet, where the first service packet includes a packet feature; and the classifier is configured according to the packet The feature generates a second service packet, where the second service packet includes the first service packet and at least two service chain information, and each service chain information is used to indicate a route of a service chain;
  • the classifier sends the second service packet to the forwarder, so that the forwarder forwards the second service packet according to the at least two service chain information.
  • Another aspect of the present invention provides a service packet forwarding method, including: a forwarder receiving a second service packet sent by a classifier, where the second service packet includes a first service packet and at least two Service chain information, each service chain information is used to indicate a route of a service chain, the first service packet is a packet received by the classifier, and the first service packet includes a packet feature;
  • the forwarder forwards the second service packet according to the at least two service chain information.
  • Another aspect of the present invention provides a service packet forwarding method, including: the classifier receiving a third service packet, where the third service packet includes a backhaul service packet and a first service chain information.
  • the first service chain information is used to indicate a route of the first service chain;
  • the classifier generates a fourth service packet according to the first service chain information and the packet characteristics of the backhaul service packet, where the fourth service packet includes the backhaul service packet and the second
  • the service chain information, the second service chain information is used to indicate the route of the second service chain; the classifier sends the fourth service packet to the forwarder, so that the forwarder is based on the second service
  • the chain information forwards the fourth service packet.
  • Another aspect of the present invention provides a service packet forwarding method, including: the forwarder receiving a fourth service packet sent by the classifier, where the fourth service packet includes a backhaul service packet And the second service chain information, where the second service chain information is used to indicate the route of the second service chain, where the fourth service packet is the first service chain information and the backhaul service packet
  • the message generated by the message feature, the first service chain information is used to indicate a route of the first service chain, and the first service chain information and the backhaul service message are the third received by the classifier.
  • the forwarder forwards the fourth service packet according to the second service chain information.
  • the method and device for forwarding a service packet according to the embodiment of the present invention according to each service chain information, indicating a route of a service chain, and carrying a plurality of service chain information in the service packet, and routing services of multiple service chains constitute a forwarding service
  • the complete path of the packet is compared with a classification rule to determine the complete forwarding path of the service packet.
  • Each classification rule only needs to determine part of the packet characteristics of the service packet.
  • Each service packet can correspond to multiple classification rules. Compared with each service packet, it can only correspond to one classification rule. It is not necessary to set all the permutation and combination of possible target values of the message feature in the classification rule, which greatly reduces the number of classification rules and reduces the forwarding rules. And the number of control signaling, saving storage resources and control signaling channel resources.
  • FIG. 1 is a network topology diagram of a prior art
  • FIG. 2 is a structural diagram of a classifier according to an embodiment of the present invention.
  • FIG. 3 is a structural diagram of a repeater according to an embodiment of the present invention.
  • FIG. 4 is a structural diagram of a repeater according to another embodiment of the present invention.
  • FIG. 5 is a structural diagram of a classifier according to another embodiment of the present invention.
  • FIG. 6 is a structural diagram of a repeater according to another embodiment of the present invention.
  • FIG. 7 is a structural diagram of a repeater according to another embodiment of the present invention
  • FIG. 8 is a structural diagram of a service packet forwarding system according to an embodiment of the present invention
  • FIG. 9 is a structural diagram of a service packet forwarding system according to another embodiment of the present invention
  • FIG. 10 is a service packet according to an embodiment of the present invention; Forwarding method flow chart;
  • FIG. 11 is a flowchart of a service packet forwarding method according to another embodiment of the present invention
  • FIG. 12 is a flowchart of a service packet forwarding method according to another embodiment of the present invention
  • FIG. 14 is a signaling diagram applicable to a service packet forwarding method according to another embodiment of the present invention
  • FIG. 15 is a signaling diagram applicable to a service packet forwarding method according to another embodiment of the present invention
  • FIG. 16 is a signaling diagram applicable to a service packet forwarding method according to another embodiment of the present invention
  • FIG. 17 is a signaling diagram applicable to a service packet forwarding method according to another embodiment of the present invention.
  • the service chain (service chain) described in this specification includes a service implementation path, on which one or more service function entities can be deployed to complete the service processing capability of the packets.
  • the service chain is also referred to as a service path or the like.
  • the service chain identifier (chain ID or CID) is used to identify a specific service chain, which can also be called a business chain tag (chain labe l).
  • FIG. 2 is a structural diagram of a classifier according to an embodiment of the present invention.
  • the classifier provided by the embodiment of the present invention can perform the process flow provided by the embodiment of the service packet forwarding method.
  • the classifier 100 includes a first receiving module 101, a first processing module 102, and a first sending module 103.
  • the first receiving module 101 is configured to receive a first service packet, where the first service packet includes a packet feature
  • the first processing module 102 is configured to generate a second service packet according to the packet feature
  • the second service packet includes the first service packet and at least two service chain information, and each service chain information is used to indicate a route of a service chain.
  • the first sending module 103 is configured to send the second service packet. Sending to the repeater, so that the forwarder forwards the second service packet according to the at least two service chain information.
  • the embodiment of the present invention indicates a route of a service chain according to each service chain information, and carries a plurality of service chain information in the service packet, and the routes of the multiple service chains form a complete path of the forwarding service packet, compared to a complete path.
  • the classification rule determines the complete forwarding path of the service packet.
  • Each classification rule only needs to determine part of the packet characteristics of the service packet.
  • Each service packet can correspond to multiple packets.
  • the classification rule can only correspond to one classification rule for each service message. It is not necessary to set all the permutation and combination of possible target values of the message feature in the classification rule, which greatly reduces the number of classification rules, and reduces the corresponding number.
  • the number of forwarding rules and control signaling saves storage resources and control signaling channel resources.
  • the first processing module 102 further determines the at least two service chain information according to one or at least two of the message characteristics.
  • the service chain information includes a service chain identifier, and the service chain identifier is used to identify the service chain.
  • the service chain information includes a service chain identifier and service link switching information, where the service chain switching information is used to indicate a handover between the service chains.
  • the service chain switching information includes a service index, where the service index is used to identify the number of functional entities corresponding to the forwarder.
  • the service chain identifier is represented by a subfield of the service chain identifier field, and the service chain identifier field is included in the second service packet.
  • the first processing module 102 is further configured to determine the first classification rule, and is further configured to match the packet feature with the first classification rule to generate the second service packet.
  • the first classification rule includes a first classification entry, the first classification entry includes a first matching condition and the service chain information; the first processing module 102 further uses the packet feature and the The first matching condition corresponding to the first classification entry is matched; the first processing module 102 is further configured to: when the first matching condition corresponding to the packet feature and the first classification entry is consistent, the first The service chain information corresponding to a category entry is added to the first service packet, and the second service packet is generated.
  • the classifier provided by the embodiment of the present invention may be specifically used to implement the method embodiment provided in FIG. 10 above, and specific functions are not described herein again.
  • each classification rule only needs to determine a part of the packet characteristics of the service packet, and each service packet can correspond to multiple classification rules, and only one classification rule can be corresponding to each service packet, and In the classification rule, all the permutations and combinations of the target values of the message features are set, which greatly reduces the number of classification rules, correspondingly reduces the number of forwarding rules and control signaling, and saves storage resources and control signaling channel resources.
  • FIG. 3 is a structural diagram of a repeater according to an embodiment of the present invention.
  • the transmitter can perform the processing flow provided by the embodiment of the service packet forwarding method.
  • the repeater 120 includes a second receiving module 121 and a second sending module 122, where the second receiving module 121 is configured to receive the classifier.
  • the second service packet where the second service packet includes a first service packet and at least two service chain information, where each service chain information is used to indicate a route of the service chain, where the first service packet is sent
  • the packet is received by the classifier, and the first service packet includes a packet feature.
  • the second sending module 122 is configured to forward the second service packet according to the at least two service chain information.
  • the embodiment of the present invention indicates a route of a service chain according to each service chain information, and carries a plurality of service chain information in the service packet, and the routes of the multiple service chains form a complete path of the forwarding service packet, compared to a complete path.
  • the classification rule determines the complete forwarding path of the service packet.
  • Each classification rule only needs to determine part of the packet characteristics of the service packet.
  • Each service packet can correspond to multiple classification rules, compared to each service packet.
  • it is not necessary to set all the permutations and combinations of possible target values of the message features in the classification rule which greatly reduces the number of classification rules, correspondingly reduces the number of forwarding rules and control signaling, and saves storage. Resource and control signaling channel resources.
  • FIG. 4 is a structural diagram of a repeater according to another embodiment of the present invention.
  • the second sending module 122 further forwards the second service message to the at least one functional entity according to the at least two service chain information.
  • the forwarder 120 further includes a second processing module 123, where the second processing module 123 is configured to determine a first forwarding rule.
  • the second sending module 122 is further configured to forward according to the first forwarding rule and the at least two service chain information.
  • the second service message is sent to the at least one functional entity.
  • the service chain information includes a service chain identifier, and the service chain identifier is used to identify the service chain.
  • the service chain information includes a service chain identifier and service link switching information, where the service chain switching information is used to indicate a handover between the service chains.
  • the at least two service chain information includes at least a third service chain information and a fourth service chain information.
  • the second sending module 122 is further configured to forward the second service packet according to the third service chain information to the a second one of the at least one functional entity; the second receiving module 121 is configured to receive the processed second service packet of the at least one functional entity; the second processing module 123 further Service chain switching information, determining the fourth service chain
  • the second sending module 122 is further configured to continue to forward the second service packet according to the fourth service chain information.
  • the service chain switching information includes a service index, where the service index is used to identify the number of functional entities corresponding to the forwarder, and after the forwarder forwards the second service packet to the functional entity,
  • the business index is decremented by one.
  • the first forwarding rule includes a first forwarding entry, the first forwarding entry includes a third matching condition and a function entity identifier, and the second processing module 123 is further configured to: use the service of the second service packet
  • the chain identifier is matched with the third matching condition of the first forwarding entry.
  • the second sending module 122 further uses the service chain identifier of the second service packet and the first forwarding entry. When the third matching condition is matched, the second service packet is sent to the functional entity identified by the function entity identifier corresponding to the first forwarding entry.
  • the second processing module 123 is further configured to: if all the service indexes in the second service packet are reduced to 0, delete all the service chain information; and the second sending module 122 is configured to send and delete all the services.
  • the second service packet after the chain information.
  • the third matching condition in the first forwarding rule includes a first service chain identifier field; the second processing module 123 further uses a service chain identifier field corresponding to the service chain identifier of the second service packet.
  • the subfield matches the subfield of the first service chain identification field in the third matching condition.
  • the transponder provided by the embodiment of the present invention may be specifically used to implement the method embodiment provided in the foregoing Figure 11. The specific functions are not described herein again.
  • the embodiment of the present invention provides a method for forwarding a packet according to a second service packet of a different type.
  • Each service packet may correspond to multiple classification rules, and only one classification rule may be corresponding to each service packet. It is not necessary to set all the permutations and combinations of possible target values of the message features in the classification rule, which greatly reduces the number of classification rules, correspondingly reduces the number of forwarding rules and control signaling, and saves storage resources and control signaling. Channel resources.
  • FIG. 5 is a structural diagram of a classifier according to another embodiment of the present invention.
  • the classifier provided by the embodiment of the present invention can perform the process flow provided by the embodiment of the service packet forwarding method.
  • the classifier 140 includes a third receiving module 141, a third processing module 142, and a third sending module 143.
  • the third receiving module 141 is configured to receive a third service packet, where the third service packet includes a backhaul service packet and a first service chain information, where the first service chain information is used to indicate the first service.
  • the third processing module 142 is configured to generate a fourth service packet according to the first service chain information and the packet feature of the backhaul service packet, where the fourth service packet includes the back Transmitting the service packet and the second service chain information, where the second service chain information is used to indicate the route of the second service chain; the third sending module 143 is configured to send the fourth service packet to the forwarder, so that The forwarder forwards the fourth service packet according to the second service chain information.
  • the embodiment of the present invention indicates the routing of a service chain according to the information of each service chain, and the service chain information carried in the service packet is changed multiple times, and the route of the service chain that is changed multiple times constitutes the complete path of the forwarding service packet.
  • each classification rule only needs to determine part of the packet characteristics of the service packet, and each service packet can correspond to multiple classification rules, compared to each service.
  • a packet can only be associated with one classification rule. It is not necessary to set all the permutations and combinations of possible target values of the packet feature in the classification rule, which greatly reduces the number of classification rules, and correspondingly reduces the number of forwarding rules and control signaling. Save storage resources and control signaling channel resources.
  • the third processing module 142 further determines to determine the second service chain according to the first service chain information and one or at least two of the message characteristics of the backhaul service message. information.
  • the first service chain information includes a first service chain identifier, the first service chain identifier is used to identify the first service chain, and the second service chain information includes a second service chain identifier, and the second service The chain identifier is used to identify the second service chain.
  • the first service chain information includes a first service chain identifier and a first service chain switching information, where the first service chain switching information is used to indicate a handover between the first service chain, and the second service chain information
  • the second service chain identifier and the second service chain switching information are used, and the second service chain switching information is used to indicate the switching between the second service chains.
  • the first service chain switching information includes a first service index, where the first service index is used to identify the number of functional entities corresponding to the first service chain, and the second service chain switching information includes a second service index, where the second service index is used to identify the number of functional entities of the forwarder corresponding to the second service chain.
  • the first service chain identifier is represented by a subfield of the first service chain identifier field, the first service chain identifier field is included in the third service packet, and the second service chain identifier is determined by the second service chain.
  • the sub-field of the identifier field indicates that the second service chain identifier field is included in the fourth service packet.
  • the third processing module 142 is further configured to determine a second classification rule, and is further configured to: match the first service chain information and the packet feature of the backhaul service packet with the second classification rule, respectively, to generate a first Four business messages.
  • the second classification rule includes a second classification entry, the second classification entry includes a second matching condition and a second service chain information, and the third processing module 142 further uses the first service chain information to Matching the second matching condition corresponding to the second classification entry, and matching the packet feature of the backhaul service packet with the second matching condition corresponding to the second classification entry; 142.
  • the second classification table is used when the first service chain information is consistent with the second matching condition, and the packet feature of the backhaul service packet is consistent with the second matching condition.
  • the second service chain information corresponding to the item is replaced by the first service chain information added in the third service packet, and the fourth service packet is generated.
  • the second matching condition in the second classification rule includes a part of the first service chain identifier; the third processing module 142 is further configured to use a part of the first service chain information and the second matching condition A part of the first service chain identifier is matched.
  • the classifier provided by the embodiment of the present invention may be specifically used to implement the method embodiment provided in Figure 12 above, and specific functions are not described herein again.
  • the embodiment of the present invention provides a method for forwarding a packet according to a second service packet of a different type.
  • Each service packet may correspond to multiple classification rules, and only one classification rule may be corresponding to each service packet. It is not necessary to set all the permutations and combinations of possible target values of the message features in the classification rule, which greatly reduces the number of classification rules, correspondingly reduces the number of forwarding rules and control signaling, and saves storage resources and control signaling. Channel resources.
  • FIG. 6 is a structural diagram of a repeater according to another embodiment of the present invention.
  • the forwarder provided by the embodiment of the present invention can perform the processing flow provided by the embodiment of the service packet forwarding method.
  • the repeater 160 includes a fourth receiving module 161 and a fourth sending module 162, where the fourth receiving module The 161 is configured to receive the fourth service packet that is sent by the classifier, where the fourth service packet includes a backhaul service packet and a second service chain information, where the second service chain information is used to indicate the second service chain.
  • the fourth service packet is a packet generated by the classifier according to the first service chain information and the packet feature of the backhaul service packet, where the first service chain information is used to indicate the first Routing of the service chain, the first service chain information and the backhaul service packet are the points
  • the information carried in the third service packet received by the classifier; the fourth sending module 162 is configured to forward the fourth service packet according to the second service chain information.
  • the embodiment of the present invention indicates the routing of a service chain according to the information of each service chain, and the service chain information carried in the service packet is changed multiple times, and the route of the service chain that is changed multiple times constitutes the complete path of the forwarding service packet.
  • each classification rule only needs to determine part of the packet characteristics of the service packet, and each service packet can correspond to multiple classification rules, compared to each service.
  • a packet can only be associated with one classification rule. It is not necessary to set all the permutations and combinations of possible target values of the packet feature in the classification rule, which greatly reduces the number of classification rules, and correspondingly reduces the number of forwarding rules and control signaling. Save storage resources and control signaling channel resources.
  • FIG. 7 is a structural diagram of a repeater according to another embodiment of the present invention.
  • the fourth sending module 162 is further configured to forward the fourth service packet to the classifier according to the second service chain information.
  • the forwarder 160 further includes a fourth processing module 163, and the fourth processing module 163 is configured to determine a second forwarding rule.
  • the fourth sending module 162 further uses the second forwarding rule and the second service chain information forwarding manner.
  • the fourth service message is sent to the classifier.
  • the second service chain information includes a second service chain identifier, and the second service chain identifier is used to identify the second service chain.
  • the second forwarding rule includes a second forwarding entry, the second forwarding entry includes a fourth matching condition and the classifier identifier, and the fourth processing module 163 is further configured to use the second service chain information.
  • the second service chain identifier is matched with the fourth matching condition of the second forwarding entry; the fourth sending module 162 is further configured to use the second service chain identifier and the second forwarding table When the fourth matching condition of the item is consistent, the fourth service packet is sent to the classifier identified by the classifier identifier corresponding to the second forwarding entry.
  • the repeater provided by the embodiment of the present invention may be specifically used to perform the method embodiment provided in FIG. 13 above, and specific functions are not described herein again.
  • the embodiment of the present invention indicates the routing of a service chain according to the information of each service chain, and the service chain information carried in the service packet is changed multiple times, and the route of the service chain that is changed multiple times constitutes the complete path of the forwarding service packet.
  • Each of the classification rules only needs to determine part of the packet characteristics of the service packet, and each service packet can be used. According to the multiple classification rules, only one classification rule can be corresponding to each service message. It is not necessary to set all the permutation and combination of possible target values of the message features in the classification rule, which greatly reduces the number of classification rules. Correspondingly, the number of forwarding rules and control signaling is reduced, and storage resources and control signaling channel resources are saved.
  • FIG. 8 is a structural diagram of a service packet forwarding system according to an embodiment of the present invention.
  • the service packet forwarding system provided by the embodiment of the present invention can perform the processing flow provided by the embodiment of the service packet forwarding method.
  • the service packet forwarding system 180 includes the classifier 100 and the repeater 120 in the foregoing embodiment. .
  • the service packet forwarding system provided by the embodiment of the present invention can perform the processing flow provided by the embodiment of the service packet forwarding method.
  • FIG. 9 is a structural diagram of a service packet forwarding system according to another embodiment of the present invention.
  • the service packet forwarding system provided by the embodiment of the present invention can perform the processing flow provided by the embodiment of the service packet forwarding method.
  • the service packet forwarding system 190 includes the classifier 140 and the repeater 160 in the foregoing embodiment. .
  • the service packet forwarding system provided by the embodiment of the present invention can perform the processing flow provided by the embodiment of the service packet forwarding method.
  • FIG. 10 is a flowchart of a service packet forwarding method according to an embodiment of the present invention.
  • the embodiment of the present invention is applicable to forwarding service packets according to multiple service chain information carried in service packets.
  • the specific service packet forwarding method is as follows:
  • Step S101 The classifier receives a first service packet, where the first service packet includes a packet feature.
  • the classifier receives the user uplink service packet sent by the gateway GPRS support node, where the service packet includes multiple packet features, such as a source port number, a source IP address, a destination port number, a destination IP address, and a service type, and the embodiment of the present invention Not limited to this.
  • Step S102 The classifier generates a second service packet according to the packet feature, where the second service packet includes the first service packet and at least two service chain information, and each service chain information A route used to indicate a service chain;
  • the classifier generates at least two service chain information according to the packet feature, where each service chain information is used to indicate a route of a service chain, and the at least two service chain information and the first service packet are Encapsulated as a second service packet, the route of the service chain is the forwarder to the second service The path at which the message is sent to at least one functional entity.
  • Step S103 The classifier sends the second service packet to the forwarder, so that the forwarder forwards the second service packet according to the at least two service chain information.
  • the classifier sends the generated second service packet to the forwarder, so that the forwarder forwards the second service packet according to the at least two service chain information carried in the second service packet.
  • the embodiment of the present invention indicates a route of a service chain according to each service chain information, and carries a plurality of service chain information in the service packet, and the routes of the multiple service chains form a complete path of the forwarding service packet, compared to a complete path.
  • the classification rule determines the complete forwarding path of the service packet.
  • Each classification rule only needs to determine part of the packet characteristics of the service packet.
  • Each service packet can correspond to multiple classification rules, compared to each service packet.
  • it is not necessary to set all the permutations and combinations of possible target values of the message features in the classification rule which greatly reduces the number of classification rules, correspondingly reduces the number of forwarding rules and control signaling, and saves storage. Resource and control signaling channel resources.
  • the classifier determines the at least two service chain information according to one or at least two of the message characteristics.
  • the service chain information includes a service chain identifier, and the service chain identifier is used to identify the service chain.
  • the service chain information includes a service chain identifier and service link switching information, where the service chain switching information is used to indicate a handover between the service chains.
  • the service chain switching information includes a service index, where the service index is used to identify the number of functional entities corresponding to the forwarder.
  • the second service packet in the embodiment of the present invention includes three service chain information, and the three service chain information may be based on one or at least two of the first service packet.
  • the message characteristics are determined.
  • CID1 service chain identifier
  • a service chain identifier CID1 is used to identify the service chain
  • service chain switching information is used to indicate the service chain.
  • the service chain information may also include only the service chain identifier and the service chain switching information.
  • the service chain identifier is represented by a subfield of the service chain identifier field, and the service chain identifier field is included in the second service packet.
  • the service chain identifier may also be represented by a subfield of the service chain identifier field, as shown in Table 2 below, where the second service packet includes a service chain identifier field, where CID1&maska is the service chain identifier CID1
  • CID2&maskb is the partial bit of CID2 obtained by the service chain identifier CID2 after mask maskb
  • CID3&maskc is the partial bit of CID3 obtained by the service chain identifier CID3 after mask maskc
  • CID3&maskc are subfields of the service chain identification domain, respectively, and CIDl&maska, CID2&maskb, and CID3&maskc form a service chain identifier.
  • the second service packet may further include multiple service chain identifier domains, and each service chain identifier domain stores a service chain identifier.
  • the CID#1 domain represents the service chain identifier domain 1, CID#1 domain.
  • Indicates the service chain identifier domain 2 the service chain identifier domain 1 stores the service chain identifier CID1
  • the service chain identifier domain 2 stores the service chain identifier CID3.
  • the embodiment of the present invention provides a second service packet of different structure to indicate that the service chain information can be carried in the second service packet, and whether the second service packet carries other cells and is carried in other encapsulation manners.
  • the service chain information is not limited in the embodiment of the present invention.
  • the method for forwarding a service packet further includes: the classifier determining a first classification rule; and the generating, by the classifier, the second service packet according to the packet feature, The packet feature is matched with the first classification rule to generate the second service packet.
  • the first classification rule includes a first classification entry, the first classification entry includes a first matching condition and the service chain information, and the classifier performs the packet feature and the first classification rule.
  • the matching, the generating the second service packet includes: the classifier matching the packet feature with a first matching condition corresponding to the first classification entry, and when the two are consistent, the classifier will The service chain information corresponding to the first category entry is added to the first service packet, and the second service packet is generated.
  • classification rules corresponding to the classifier are as follows:
  • the video stream packet whose destination IP address is IP1 and whose source port number is 80 matches the above two classification rules of 2, 3, and 4.
  • the relationship is added to form the second service packet in the first service packet, and the format of the second service packet is as shown in Table 1 above.
  • classification rules determined by the classifier are as follows:
  • CID I CID2&maskb
  • CIDl&maska, CID2&maskb and CID3&maskc are not equal to each other.
  • the classifier adds CIDl&maska, CID2&maskb, and CID3&maskc to the first industry.
  • the second service packet is formed in the service packet, and the format of the second service packet is as shown in Table 2 above.
  • the classification rules determined by the classifier are as follows:
  • CID1 is set in the CID#1 field of the service message.
  • the video stream packet whose destination IP address is IP1 and whose source port number is 80 matches the two classification rules of the above 2 and 3.
  • the classifier adds CID1 to the CID#1 field of the service packet and adds CID3 to the CID of the service packet.
  • the #2 domain is configured to form the second service packet, and the format of the second service packet is as shown in Table 3 above.
  • the classification rule may be sent to the classifier by using the controller.
  • the classifier may obtain the classification rule in a pre-configured manner or from other configured network elements, and the classification rule is not limited to the foregoing example.
  • the form, and the classification rules can also be set with a priority, and the service chain information carried in the corresponding second service packet follows the same priority as the classification rule.
  • each classification rule only needs to determine a part of the packet characteristics of the service packet, and each service packet can correspond to multiple classification rules, and only one classification rule can be corresponding to each service packet, and In the classification rule, all the permutations and combinations of the target values of the message features are set, which greatly reduces the number of classification rules, correspondingly reduces the number of forwarding rules and control signaling, and saves storage resources and control signaling channel resources.
  • FIG. 11 is a flowchart of a service packet forwarding method according to another embodiment of the present invention.
  • the specific method for forwarding a service packet provided by the embodiment of the present invention is as follows:
  • Step S201 The forwarder receives the second service packet sent by the classifier, where the second service packet includes a first service packet and at least two service chain information, where each service chain information is used to indicate a service chain.
  • the first service packet is a packet received by the classifier, and the first service packet includes a packet feature.
  • the classifier receives the user uplink service message sent by the gateway GPRS support node.
  • a packet of a service packet generates at least two service chain information, and encapsulates the first service packet and the at least two service chain information to form a second service packet, and sends the second service to the forwarder. Message.
  • Step S202 The forwarder forwards the second service packet according to the at least two service chain information.
  • the forwarder forwards the second service packet according to the at least two service chain information carried in the second service packet.
  • the embodiment of the present invention indicates a route of a service chain according to each service chain information, and carries a plurality of service chain information in the service packet, and the routes of the multiple service chains form a complete path of the forwarding service packet, compared to a complete path.
  • the classification rule determines the complete forwarding path of the service packet.
  • Each classification rule only needs to determine part of the packet characteristics of the service packet.
  • Each service packet can correspond to multiple classification rules, compared to each service packet.
  • it is not necessary to set all the permutations and combinations of possible target values of the message features in the classification rule which greatly reduces the number of classification rules, correspondingly reduces the number of forwarding rules and control signaling, and saves storage. Resource and control signaling channel resources.
  • the forwarding, by the repeater, the second service packet according to the at least two service chain information includes: the forwarder forwarding the information according to the at least two service chain information
  • the second service message is sent to at least one functional entity.
  • the forwarder determines the first forwarding rule; the forwarding, by the forwarder, the forwarding the second service packet to the at least one functional entity according to the at least two service chain information, The rule and the at least two service chain information forward the second service message to the at least one functional entity.
  • the service chain information includes a service chain identifier, and the service chain identifier is used to identify the service chain.
  • the service chain information includes a service chain identifier and service link switching information, where the service chain switching information is used to indicate a handover between the service chains.
  • the structure of the second service packet received by the forwarder may be as described in Table 1, Table 2, and Table 3, and details are not described herein.
  • the at least two service chain information includes at least a third service chain information and a fourth service chain information, and the forwarding, by the forwarder, forwarding the second service packet according to the at least two service chain information,
  • the third service chain information forwards the second service packet to one of the at least one functional entity;
  • the repeater receives the processed second service packet of the at least one functional entity And determining, according to the service chain switching information, the fourth service chain information, and continuing to forward the second service packet according to the fourth service chain information.
  • the service chain switching information includes a service index, where the service index is used to identify the number of functional entities corresponding to the forwarder, and after the forwarder forwards the second service packet to the functional entity,
  • the business index is decremented by one.
  • the first forwarding rule includes a first forwarding entry, the first forwarding entry includes a third matching condition and a function entity identifier, and the method further includes: the forwarding device is configured by the forwarder The service chain identifier is matched with the third matching condition of the first forwarding entry. When the two are consistent, the forwarder sends the second service packet to the function corresponding to the first forwarding entry.
  • the functional entity identified by the entity ID is configured by the forwarder The service chain identifier.
  • the forwarder deletes all the service chain information, and sends a second service packet after deleting all the service chain information.
  • each SF or repeater on the forwarding service chain decrements the SI value corresponding to CID2 by one after each service processing, until the SI value is reduced to 0, and the repeater switches to the service chain identifier CID3 according to the same logic.
  • the forwarding rules and service processing corresponding to the CID3 are performed.
  • the forwarder deletes the service tag header encapsulated in the service packet, and sends the processed service packet to the external network device.
  • the forwarder or the SF detects that the SI corresponding to any CID is reduced to 0, the CID and the corresponding SI may be deleted from the service label header, so that the first CID encapsulated in the service packet needs to perform service forwarding.
  • the service chain identifier the forwarder only needs to forward according to the first CID in the service tag header; when the forwarder finds that all the correspondences between the CID and the SI have been deleted, the service packet is considered to have completed the service forwarding, and Service packets are sent directly to the external network device.
  • the third matching condition in the first forwarding rule includes a first service chain identifier field; the repeater matches the service chain identifier of the second service packet with the third of the first forwarding entry Conditional matching includes:
  • the forwarder matches a subfield of the service chain identifier field corresponding to the service chain identifier of the second service packet with a subfield of the first service chain identifier field in the third matching condition.
  • CIDla, CIDlb and CIDlc may be the same or different from CID1, CID2 and CID3, respectively.
  • the forwarder After receiving the second service packet as shown in Table 2, the forwarder matches the service chain identifier field encapsulated in the second service packet, and the subfield of the service chain identifier field matches the forwarding rule, if the second service The lower 8 bits of the CID carried by the packet are the same as the lower 8 bits of the CIDla. If the second service packet matches the forwarding rule 1, the forwarder forwards the second service packet to SF1 for processing. The forwarder receives the SF1 return. The second service packet is matched again, and the matching rule 2 is successfully matched, and the second service packet is further forwarded to the SF2.
  • the forwarder receives the second service packet returned by the SF2, and the second service packet matches the forwarding rule 3, and clears the lower 8 bits of the CID according to the forwarding rule 3, and then the second service packet according to the instruction of the goto-table.
  • the second forwarding service packet is sent to the SF4 and the SF5 for service processing according to the forwarding rule 4 and the forwarding rule 5.
  • the forwarder receives the second service packet returned by the SF5, and the second service packet matches the forwarding rule 6 successfully.
  • the forwarder again clears the middle 8 bit of the CID and continues to implement subsequent forwarding rule matching. After all the bits of the service chain identifier in the second service packet are cleared, the service chain information is deleted, and the second service packet after the service chain information is deleted is sent to the external network device.
  • the forwarding rules of forwarder 2 are:
  • the forwarder 1 After receiving the second service packet as shown in Table 3, the forwarder 1 obtains the second service packet.
  • SF2 performs service processing; the specific forwarding process is consistent with the foregoing embodiment, and details are not described herein again.
  • the forwarder 1 After the forwarder 1 completes the forwarding of the second service packet based on the CID#1 domain, the second service packet is sent to the next hop forwarder, that is, the forwarder 2, and the forwarder 1 can delete the CID#1 domain only. CID#2 domain of the service message.
  • the forwarder 2 After receiving the second service packet, the forwarder 2 matches the CID#2 field of the second service packet, and forwards the second service packet to SF3 and SF4 for service processing; when all the second service packet After the forwarding is completed, the forwarder 2 can delete the CID#2 domain and send the processed second service packet to the external network device.
  • the forwarding rule may be sent to the forwarder by using the controller.
  • the forwarder may obtain the forwarding rule in a pre-configured manner or from other configured network elements.
  • the forwarding rule is not limited to the foregoing example.
  • the priority is also set between the forwarding rules, and the corresponding forwarder can forward the second service packet according to the priority of the forwarding rule.
  • the embodiment of the present invention provides a method for forwarding a packet according to a second service packet of a different type.
  • Each service packet may correspond to multiple classification rules, and only one classification rule may be corresponding to each service packet. It is not necessary to set all the permutations and combinations of possible target values of the message features in the classification rule, which greatly reduces the number of classification rules, correspondingly reduces the number of forwarding rules and control signaling, and saves storage resources and control signaling. Channel resources.
  • FIG. 12 is a flowchart of a service packet forwarding method according to another embodiment of the present invention.
  • the specific method for forwarding a service packet provided by the embodiment of the present invention is as follows:
  • Step S601 The classifier receives a third service packet, where the third service packet includes a backhaul service packet and a first service chain information, where the first service chain information is used to indicate the first service chain. Routing
  • the classifier in the embodiment of the present invention receives the third service packet returned by the forwarder, where the third service packet includes a backhaul service packet and a first service chain information, and the backhaul service packet may be the foregoing
  • the first service packet in the embodiment may be the first service packet processed by the function entity, where the first service chain information is used to indicate that the classifier forwards the backhaul before receiving the third service packet. Routing of the first service chain of service packets.
  • Step S602 The classifier generates a fourth service packet according to the first service chain information and the packet feature of the backhaul service packet, where the fourth service packet includes the backhaul service packet. a second service chain information, where the second service chain information is used to indicate a route of the second service chain;
  • the classifier generates the second service chain information according to the first service chain information and the packet feature of the backhaul service message, and the second service chain information generates the fourth service packet instead of the first service chain information, or
  • the second service chain information is added to form a fourth service packet in the third service packet, where the second service chain information is used to indicate a route of forwarding the second service chain of the fourth service packet, where the second service chain is The route is a path that the forwarder sends at least the fourth service packet to a functional entity.
  • Step S603 The classifier sends the fourth service packet to the forwarder, so that the forwarder forwards the fourth service packet according to the second service chain information.
  • the classifier sends the generated fourth service packet to the forwarder, so that the forwarder forwards the fourth service packet according to the second service chain information carried in the fourth service packet.
  • the embodiment of the present invention indicates the routing of a service chain according to the information of each service chain, and the service chain information carried in the service packet is changed multiple times, and the route of the service chain that is changed multiple times constitutes the complete path of the forwarding service packet.
  • each classification rule only needs to determine part of the packet characteristics of the service packet, and each service packet can correspond to multiple classification rules, compared to each service.
  • a packet can only be associated with one classification rule. It is not necessary to set all the permutations and combinations of possible target values of the packet feature in the classification rule, which greatly reduces the number of classification rules, and correspondingly reduces the number of forwarding rules and control signaling. Save storage resources and control signaling channel resources.
  • the classifier determines the second service chain according to the first service chain information and one or at least two packet characteristics of the backhaul service message. I Ft self.
  • the second service chain information is determined by the first service chain information carried in the third service packet and one or at least two of the packet characteristics of the backhaul service packet, that is, the third service packet carries the first
  • a service chain information is also used as a condition for determining the second service chain information.
  • the first service chain information includes a first service chain identifier, the first service chain identifier is used to identify the first service chain, and the second service chain information includes a second service chain identifier, and the second service The chain identifier is used to identify the second service chain.
  • the first service chain information includes a first service chain identifier and a first service chain switching information, where the first service chain switching information is used to indicate a handover between the first service chain, and the second service chain information
  • the second service chain identifier and the second service chain switching information are used, and the second service chain switching information is used to indicate the switching between the second service chains.
  • the first service chain switching information includes a first service index, where the first service index is used to identify the number of functional entities corresponding to the first service chain, and the second service chain switching information includes a second service index, where the second service index is used to identify the number of functional entities of the forwarder corresponding to the second service chain.
  • the first service chain identifier is represented by a subfield of the first service chain identifier field, the first service chain identifier field is included in the third service packet, and the second service chain identifier is determined by the second service chain.
  • the sub-field of the identifier field indicates that the second service chain identifier field is included in the fourth service packet.
  • the third service packet includes at least two first service chain information, where the first service chain information includes a first service chain identifier, or the first service chain information includes a first service chain identifier and a first service chain switch information, where A service chain identifier is used to identify a first service chain that forwards a backhaul service packet, and a first service chain handover information indicates a handover between the first service chain, where the first service chain handover information includes a first service index.
  • the first service index is used to identify the number of functional entities that the forwarder corresponds to the first service chain.
  • the first service chain identifier may also be represented by a subfield of the first service chain identifier field, where the first service chain identifier field is included in the third service packet.
  • the format of the third service packet is the same as that of any one of Table 1, Table 2, or Table 3.
  • the fourth service packet includes at least two second service chain information, the second service chain information includes a second service chain identifier, or the second service chain information includes a second service chain identifier and a second service chain switch information, where The second service chain identifier is used to identify a second service chain that forwards the fourth service packet.
  • the second service chain switching information indicates the switching between the second service chain, the second service chain switching information includes a second service index, and the second service index is used to identify that the repeater corresponds to the second The number of functional entities in the business chain.
  • the second service chain identifier may also be represented by a subfield of the second service chain identifier field, where the second service chain identifier field is included in the fourth service packet.
  • the format of the fourth service packet is the same as that of any one of Table 1, Table 2, or Table 3.
  • the service packet forwarding method provided by the embodiment of the present invention further includes: the classifier determining a second classification rule; the classifier generating, according to the first service chain information and the packet characteristics of the backhaul service packet
  • the fourth service packet includes: the classifier matches the packet characteristics of the first service chain information and the backhaul service packet with the second classification rule to generate a fourth service packet.
  • the second classification rule includes a second classification entry, the second classification entry includes a second matching condition and second service chain information; the classifier uses the first service chain information and the backhaul service
  • the packet characteristics of the packet are respectively matched with the second classification rule, and the generating the fourth service packet includes: the second matching that the classifier corresponding to the first service chain information and the second classification entry Matching the condition, and matching the packet feature of the backhaul service packet with the second matching condition corresponding to the second category entry, when the first service chain information is consistent with the second matching condition
  • the classifier replaces the second service chain information corresponding to the second category entry with the first service, when the packet feature of the backhaul service packet is consistent with the second matching condition.
  • the chain information is added to the third service packet, and the fourth service packet is generated.
  • the second matching condition in the second classification rule includes a part of the first service chain identifier; the classifier matches the first service chain information and the second matching condition corresponding to the second classification entry to include The classifier matches a portion of the first service chain information with a portion of the first service chain identifier of the second matching condition.
  • the second matching condition in the second classification rule includes a part of the first service chain identifier, and the classifier uses the information of the first service chain.
  • the video stream packet carrying the CIDa2 with the source port number of 80, that is, the CIDa2 corresponding to the third service packet is masked to obtain CIDa2 & MASKA, and the CIDa2 & MASKA is matched with the CIDA & MASKA in the forwarding rule.
  • the classification rule may be sent to the classifier by using the controller.
  • the classifier may obtain the classification rule in a pre-configured manner or from other configured network elements, and the classification rule is not limited to the foregoing example.
  • the form, and the classification rules can also be set with a priority, and the service chain information carried in the corresponding second service packet follows the same priority as the classification rule.
  • the embodiment of the present invention indicates the routing of a service chain according to the information of each service chain, and the service chain information carried in the service packet is changed multiple times, and the route of the service chain that is changed multiple times constitutes the complete path of the forwarding service packet.
  • each classification rule only needs to determine part of the packet characteristics of the service packet, and each service packet can correspond to multiple classification rules, compared to each service.
  • a packet can only be associated with one classification rule. It is not necessary to set all the permutations and combinations of possible target values of the packet feature in the classification rule, which greatly reduces the number of classification rules, and correspondingly reduces the number of forwarding rules and control signaling. Save storage resources and control signaling channel resources.
  • FIG. 13 is a flowchart of a service packet forwarding method according to another embodiment of the present invention.
  • the specific method for forwarding a service packet provided by the embodiment of the present invention is as follows:
  • Step S701 The forwarder receives the fourth service packet sent by the classifier, where the fourth service packet includes a backhaul service packet and a second service chain information, where the second service chain information is used. Instructing a route of the second service chain, where the fourth service packet is the classifier according to the first industry
  • the service chain information and the message generated by the message feature of the backhaul service message, the first service chain information is used to indicate a route of the first service chain, the first service chain information, and the backhaul service
  • the packet is information carried in the third service packet received by the classifier;
  • the classifier in the embodiment of the present invention receives the third service packet returned by the forwarder, where the third service packet includes a backhaul service packet and a first service chain information, and the backhaul service packet may be the foregoing
  • the first service packet in the embodiment may be the first service packet processed by the function entity, where the first service chain information is used to indicate that the classifier forwards the backhaul before receiving the third service packet. Routing of the first service chain of service packets.
  • the classifier generates the second service chain information according to the first service chain information and the packet feature of the backhaul service message, and the second service chain information generates the fourth service packet instead of the first service chain information, or
  • the second service chain information is added to form a fourth service packet in the third service packet, where the second service chain information is used to indicate a route of forwarding the second service chain of the fourth service packet, where the second service chain is The route is a path that the forwarder sends at least the fourth service packet to a functional entity.
  • Step S702 The forwarder forwards the fourth service packet according to the second service chain information.
  • the classifier sends the generated fourth service packet to the forwarder, so that the forwarder forwards the fourth service packet according to the second service chain information carried in the fourth service packet.
  • the embodiment of the present invention indicates the routing of a service chain according to the information of each service chain, and the service chain information carried in the service packet is changed multiple times, and the route of the service chain that is changed multiple times constitutes the complete path of the forwarding service packet.
  • each classification rule only needs to determine part of the packet characteristics of the service packet, and each service packet can correspond to multiple classification rules, compared to each service.
  • a packet can only be associated with one classification rule. It is not necessary to set all the permutations and combinations of possible target values of the packet feature in the classification rule, which greatly reduces the number of classification rules, and correspondingly reduces the number of forwarding rules and control signaling. Save storage resources and control signaling channel resources.
  • the forwarding, by the forwarder, the fourth service packet, according to the second service chain information includes: the forwarder forwarding the fourth service packet according to the second service chain information Give the classifier.
  • the repeater in the embodiment of the present invention may perform the fourth according to the second service chain information.
  • the service message is sent to the classifier.
  • the service packet forwarding party further includes: the forwarder determining a second forwarding rule; the forwarding, by the forwarder, forwarding the fourth service packet to the classifier according to the second service chain information, including: forwarding The device forwards the fourth service packet to the classifier according to the second forwarding rule and the second service chain information.
  • the second service chain information includes a second service chain identifier, and the second service chain identifier is used to identify the second service chain.
  • the second forwarding rule includes a second forwarding entry, the second forwarding entry includes a fourth matching condition and the classifier identifier, and the forwarder is configured according to the second forwarding rule and the second service chain Forwarding the fourth service packet to the classifier includes:
  • the forwarder matches the second service chain identifier in the second service chain information with the fourth matching condition of the second forwarding entry, and when the two are consistent, the forwarder will The fourth service packet is sent to the classifier identified by the classifier identifier corresponding to the second forwarding entry.
  • the forwarder receives the third service packet carrying the CIDa2, the third service packet is sent to the SF1 according to the forwarding rule 2, and the third service packet returned by the SF1 is sent to the classifier; if the forwarder receives the packet
  • the third service packet of the CIDbl is sent to the SF3 and the SF4 according to the forwarding rule 3, and the third service packet returned by the SF4 is sent to the classifier, so that the classifier is based on the third service.
  • the packet characteristics of the slewing service packet carried in the packet and the CIDbl carried in the third service packet continue to match the subsequent classification rules.
  • the forwarding device sends the fourth service packet returned by the SF7 to the external network device because the classifier identifier is not included in the forwarding rule.
  • the forwarding rule may be sent to the forwarder by using the controller.
  • the forwarder may obtain the forwarding rule in a pre-configured manner or from other configured network elements.
  • the forwarding rule is not limited to the foregoing example.
  • the priority is also set between the forwarding rules, and the corresponding forwarder can forward the second service packet according to the priority of the forwarding rule.
  • the embodiment of the present invention indicates the routing of a service chain according to the information of each service chain, and the service chain information carried in the service packet is changed multiple times, and the route of the service chain that is changed multiple times constitutes the complete path of the forwarding service packet.
  • each classification rule only needs to determine part of the packet characteristics of the service packet, and each service packet can correspond to multiple classification rules, compared to each service.
  • a packet can only be associated with one classification rule. It is not necessary to set all the permutations and combinations of possible target values of the packet feature in the classification rule, which greatly reduces the number of classification rules, and correspondingly reduces the number of forwarding rules and control signaling. Save storage resources and control signaling channel resources.
  • FIG. 14 is a signaling diagram of a method for forwarding a service packet according to another embodiment of the present invention.
  • the method for forwarding a service packet according to an embodiment of the present invention is as follows:
  • Step S301 The controller sends a classification rule to the classifier.
  • Step S302 The controller sends a forwarding rule to the forwarder.
  • steps S301 and S302 in the embodiment of the present invention is not limited.
  • Step S303 The classifier matches the service packet with the classification rule.
  • the classifier matches the packet eigenvalue of the service packet with the matching condition in the categorization rule, for example, the video stream packet with the destination IP address being IP1 and the source port number being 80, and the two classification rules of the second, third, and fourth embodiments in the embodiment of the present invention. match.
  • Step S305 The forwarder forwards the service packet according to CID1.
  • Step S306 Forwarding a service packet between the forwarder and the SF1.
  • the forwarder sends a service packet to the SF1, so that the SF1 processes the service packet and returns the processed service packet to the forwarder.
  • Step S307 Forwarding a service packet between the forwarder and the SF2.
  • the forwarder switches to the SF2 and sends a service packet to the SF2, so that the SF2 processes the service packet and returns the processed service packet to the forwarder.
  • Step S308 The forwarder forwards the service packet according to CID2.
  • the repeater determines that the next service chain identifier is CID2, and CID2 corresponds to SF4 and SF5.
  • Step S309 Forwarding a service packet between the forwarder and the SF4.
  • the forwarder sends a service packet to the SF4, so that the SF4 processes the service packet and returns the processed service packet to the forwarder.
  • Step S310 Forwarding a service packet between the forwarder and the SF5.
  • the forwarder sends a service packet to the SF5, so that the SF5 processes the service packet and returns the processed service packet to the forwarder.
  • Step S311 The forwarder forwards the service packet according to CID3.
  • the repeater determines that the next service chain identifier is CID3 and CID3 corresponds to SF6.
  • Step S312 Forwarding a service packet between the forwarder and the SF6.
  • the forwarder sends a service packet to the SF6, so that the SF6 processes the service packet and returns the processed service packet to the forwarder.
  • Step S313 The forwarder sends a service packet to the outbound network device.
  • the forwarder determines that there is no next service chain identifier, it sends the service packet to the external network device.
  • the correspondence between the multiple service chain identifiers and the service index is added to the service packet, so that the forwarder can switch the forwarding service chain corresponding to the multiple service chain identifiers when forwarding the service packet.
  • FIG. 15 is a signaling diagram of a method for forwarding a service packet according to another embodiment of the present invention. and the method for forwarding a service packet according to an embodiment of the present invention is as follows:
  • Step S401 The controller sends a classification rule to the classifier.
  • Step S402 The controller sends a forwarding rule to the forwarder.
  • Step S403 The classifier matches the service packet with the classification rule.
  • the video stream packet whose destination IP address is IP1 and whose source port number is 80 matches the three classification rules in the embodiment of the present invention.
  • Step S404 The classifier sends, to the repeater, a service packet that adds a part of the bits of the service chain identifier.
  • the classifier combines the service chain identifiers of the three classification rules with the corresponding masks to form a second service chain identifier CID, adds the CID to the service packet, and sends the service packet to the forwarder.
  • Step S405 The forwarder forwards the service packet according to the CID&maska.
  • the forwarder obtains the forwarding rule corresponding to the CID&maska, and determines that the service packet needs to be processed by the SF1 and the SF2.
  • Step S406 Forwarding a service packet between the forwarder and the SF1.
  • Step S407 Forwarding a service packet between the forwarder and the SF2.
  • Step S408 The forwarder forwards the service packet according to the CID&maskb.
  • the forwarder obtains the forwarding rule corresponding to the CID&maskb, and determines that the service packet needs to be processed by the SF4 and the SF5.
  • Step S409 Forwarding a service packet between the forwarder and the SF4;
  • Step S410 Forwarding a service packet between the forwarder and the SF5.
  • Step S411 The forwarder forwards the service packet according to CID&maskc.
  • the forwarder obtains the forwarding rule corresponding to the CID&maskc, and determines that the service packet needs to be processed by the SF6.
  • Step S412 Forwarding a service packet between the forwarder and the SF6;
  • Step S413 The forwarder sends a service packet to the outbound network device.
  • the forwarder After the forwarder determines that all the bits of the service chain identifier in the service tag header are cleared, the forwarder sends the service packet to the external network device.
  • steps S406, S407, S409, S410, and S412 are the same in steps S306, S307, S309, S310, and S312 in the foregoing embodiment, and are not described herein again.
  • the embodiment of the present invention saves the storage space of the service tag header by adding a part of the bits of the service chain identifier in the service packet.
  • FIG. 16 is a signaling diagram applicable to a service packet forwarding method according to another embodiment of the present invention.
  • the specific method for forwarding a service packet provided by the embodiment of the present invention is as follows:
  • Step S501 The controller sends a classification rule to the classifier.
  • Step S502 The controller sends a forwarding rule to the forwarder 1;
  • Step S503 The controller sends a forwarding rule to the forwarder 2;
  • steps S501, S502, and S503 in the embodiment of the present invention is not limited.
  • Step S504 The classifier matches the service packet with the classification rule.
  • the video stream packet with the destination IP address of IP1 and the source port number of 80 matches the two classification rules of the above 2 and 3.
  • Step S505 The classifier sends a service packet with a plurality of service chain identifiers to the forwarder.
  • the classifier adds the CID1 to the CID#1 field of the service packet, and adds the CID3 to the CID#2 domain of the service packet.
  • the service packet with CID1 and CID3 added is sent to the forwarder.
  • Step S506 The forwarder 1 forwards the service packet according to the CID#1 domain
  • the forwarder 1 obtains the forwarding rule corresponding to the CID1 according to the CID1 in the CID#1 domain of the service packet, and determines that the service packet needs to be processed by the SF1 and the SF2.
  • Step S507 Forwarding service packets between the forwarder 1 and the SF1;
  • Step S508 Forwarding service packets between the forwarder 1 and the SF2;
  • Step S509 The forwarder 1 sends a service packet to the forwarder 2;
  • the forwarder 1 After forwarding the service packet based on the CID#1 field of the service packet, the forwarder 1 sends the service packet to the forwarder 2.
  • Step S510 The forwarder 2 forwards the service packet according to the CID#2 domain
  • the forwarder 2 obtains the forwarding rule corresponding to the CID3 according to the CID3 in the CID#2 domain of the service packet, and determines that the service packet needs to be processed by the SF3 and the SF4.
  • Step S511 Forwarding service packets between the forwarder 2 and the SF3;
  • Step S512 Forwarding service packets between the forwarder 2 and the SF4;
  • Step S513 The forwarder 2 sends a service packet to the outbound network device.
  • the forwarder 2 determines that there is no service chain identifier in the service packet, the forwarder 2 sends the service packet to the external network device.
  • different forwarding devices are used to identify different service chain identification domains of service packets, and different forwarders forward the service packets in segments, thereby providing forwarding efficiency of service packets.
  • FIG. 17 is a signaling diagram of a method for forwarding a service packet according to another embodiment of the present invention.
  • the service packet according to the embodiment of the present invention has a source IP address of IP4, a destination IP address of IP1, and a source port number.
  • the service packet forwarding method is as follows:
  • Step S901 The controller sends a classification rule to the classifier.
  • Step S902 The controller sends a forwarding rule to the forwarder.
  • steps S901 and S902 in the embodiment of the present invention is not limited.
  • Step S904 The classifier sends a service packet carrying the CIDa2 to the forwarder.
  • the classifier sets the CIDa2 as the service chain identifier of the service packet, and sends the service packet to the forwarder.
  • Step S905 The forwarder obtains a forwarding rule that matches CIDa2.
  • the forwarder matches the service packet with the forwarding rule, and determines that the service packet needs to be forwarded to the SF1 and the classifier.
  • Step S906 Forwarding a service packet between the forwarder and the SF1;
  • Step S907 The forwarder forwards the service packet to the classifier.
  • Step S909 The classifier sends a service packet carrying the CIDb1 to the forwarder.
  • the classifier replaces the CIDa2 of the service packet with the CIDbl and sends the packet to the forwarder.
  • Step S910 The forwarder obtains a forwarding rule that matches the CIDbl.
  • the forwarder matches the service packet with the forwarding rule, and determines that the service packet needs to be forwarded to the SF3, the SF4, and the classifier.
  • the service message is forwarded between the S911 and the forwarder and the SF3.
  • Step S912 Forwarding a service packet between the forwarder and the SF4.
  • Step S913 The forwarder sends a service packet to the classifier.
  • Step S915 The classifier sends a service packet carrying the CIDc2 to the forwarder.
  • the classifier replaces the CIDb l of the service message with CIDc2 and sends it to the repeater.
  • Step S916 The forwarder obtains a forwarding rule that matches CIDc2.
  • the forwarder matches the service packet with the forwarding rule, and determines that the service packet needs to be forwarded to SF6 and SF7.
  • Step S917 Forwarding a service packet between the forwarder and the SF6;
  • Step S918 Forwarding service packets between the forwarder and the SF7.
  • Step S919 The forwarder sends a service packet to the outbound network device.
  • the forwarding message sent by the SF7 is sent to the external network device because the forwarding rule matching the CIDc2 does not include the classifier.
  • a matching condition of the classification rule only determines one packet feature or several packet features of the service packet, and does not need to determine all the packet characteristics of the service packet, and reduces the classification rule entry, and the corresponding reduction is reduced.
  • the entry of the forwarding rule saves storage resources.
  • the embodiment of the present invention indicates a route of a service chain according to each service chain information, and carries a plurality of service chain information in the service packet, and the route of multiple service chains constitutes a complete path of the forwarding service packet.
  • the route of the service chain that is changed multiple times constitutes the complete path of the forwarding service packet, and the complete forwarding path of the service packet is determined compared with a classification rule.
  • Each classification rule only needs to determine a part of the packet characteristics of the service packet, and each service packet can correspond to multiple classification rules, and only one classification rule can be corresponding to each service packet, and is not required to be in the classification rule. All the permutations and combinations of possible target values of the message feature are set, which greatly reduces the number of classification rules, correspondingly reduces the number of forwarding rules and control signaling, and saves storage resources and control signaling channel resources.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, may be located in one place. Square, or it can be distributed to multiple network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a hardware plus software functional unit.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the method of various embodiments of the present invention.
  • a computer device which may be a personal computer, a server, or a network device, etc.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program code. .

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Abstract

本发明实施例提供一种业务报文转发方法及装置。该方法包括:分类器接收第一业务报文;所述分类器根据所述报文特征生成第二业务报文;所述分类器将所述第二业务报文发送给转发器。本发明实施例依据每个业务链信息指示一个业务链的路由,通过在业务报文中携带多个业务链信息,由多个业务链的路由构成转发业务报文的完整路径,相比于一条分类规则确定业务报文完整的转发路径而言,每条分类规则只需判断业务报文的部分报文特征,每个业务报文可以对应多条分类规则,相比于每一业务报文只能对应一条分类规则,大大减少了分类规则数量,对应减少了转发规则及控制信令的数量,节省了存储资源和控制信令通道资源。

Description

业务报文转发方法及装置
技术领域
本发明实施例涉及通信技术, 尤其涉及一种业务报文转发方法及装 置。
背景技术
在通信领域中, 网关 GPRS支持节点 (Gateway GPRS Support Node , 简称 GGSN ) 与外部网络之间部署有各种业务的功能实体 (Service Function, 简称 SF) , 以及分类器和转发器。
如图 1所示, 从 GGSN发送到 Internet的上行业务报文, 首先流经分 类器, 分类器将业务报文与分类器上的分类规则进行匹配, 业务报文包括 多个报文特征, 如源端口号、 源 IP、 目的端口号、 目的 IP和业务类型。 分类规则包括多个表项。 每个表项包括匹配条件、 业务链标识 (Chain Identif ier , 简称 CID ) 和业务索引 (Service Index, 简称 SI ) , 以及 匹配条件、 CID和 SI三者的对应关系。所述匹配条件包括业务报文对应的 各报文特征, 以及各报文特征分别对应的目标值。 匹配条件用于判断业务 报文对应的各报文特征的特征值是否与所述匹配条件中各报文特征对应 的目标值分别匹配。 CID用于标识转发业务链。 SI用于标识 CID对应的转 发业务链中 SF 的个数。 若业务报文对应的各报文特征与某一表项中的匹 配条件匹配, 则分类器将该表项中与该匹配条件对应的 CID与 SI封装到 业务报文中, 并将封装有 CID与 SI的业务报文发送给转发器, 以使转发 器转发所述业务报文。 转发器中存有转发规则, 转发规则包括 SF 的标识 信息, SF是 CID标识的业务链包含的 SF, 转发器依据业务报文携带的 CID 获取与所述 CID对应的转发规则, 并依据转发规则中 SF的标识信息将业 务报文发送到 SF。 例如转发器将业务报文依次发送给功能实体 1、 功能实 体 2和功能实体 3处理之后, 将业务报文发送到外网设备。
现有技术中, 若某一报文特征对应多个目标值, 则该报文特征在分类 规则中需要对应多个匹配条件。 因为每一业务报文只属于一个特定的业务 链, 所以每一业务报文只能对应一个匹配条件。 当报文特征分别对应多个 目标值时, 为了包含所有的匹配条件, 需要在分类规则中对可能的目标值 的所有的排列组合进行设置, 导致分类规则及转发规则的表项急剧增加, 占用大量的存储资源。 发明内容
本发明实施例提供一种业务报文转发方法及装置, 以减少分类规则及 转发规则的表项, 节省存储资源。
本发明实施例的一个方面是提供一种分类器, 包括:
第一接收模块, 用于接收第一业务报文, 所述第一业务报文包括报文 特征;
第一处理模块, 用于根据所述报文特征生成第二业务报文, 所述第二 业务报文包括所述第一业务报文以及至少两个业务链信息, 每个业务链信 息用于指示一个业务链的路由;
第一发送模块, 用于将所述第二业务报文发送给转发器, 以使所述转 发器根据所述至少两个业务链信息转发所述第二业务报文。
本发明实施例的另一个方面是提供一种转发器, 包括:
第二接收模块, 用于接收分类器发送的第二业务报文, 所述第二业务 报文包括第一业务报文以及至少两个业务链信息, 每个业务链信息用于指 示一个业务链的路由, 所述第一业务报文是所述分类器接收到的报文, 所 述第一业务报文包括报文特征;
第二发送模块, 用于根据所述至少两个业务链信息转发所述第二业务 报文。
本发明实施例的另一个方面是提供一种分类器, 包括:
第三接收模块, 用于接收第三业务报文, 所述第三业务报文包括回传 业务报文及第一业务链信息, 所述第一业务链信息用于指示第一业务链的 路由;
第三处理模块, 用于根据所述第一业务链信息以及所述回传业务报文 的报文特征, 生成第四业务报文, 所述第四业务报文包括所述回传业务报 文以及第二业务链信息, 所述第二业务链信息用于指示第二业务链的路 由;
第三发送模块, 用于将所述第四业务报文发送给转发器, 以使所述转 发器根据所述第二业务链信息转发所述第四业务报文。
本发明实施例的另一个方面是提供一种转发器, 包括:
第四接收模块, 用于接收所述分类器发送的第四业务报文, 所述第四 业务报文包括回传业务报文以及第二业务链信息, 所述第二业务链信息用 于指示第二业务链的路由, 所述第四业务报文是所述分类器根据第一业务 链信息以及所述回传业务报文的报文特征生成的报文, 所述第一业务链信 息用于指示第一业务链的路由, 所述第一业务链信息以及所述回传业务报 文是所述分类器接收的第三业务报文中携带的信息;
第四发送模块, 用于根据所述第二业务链信息转发所述第四业务报 文。
本发明实施例的另一个方面是提供一种业务报文转发系统, 包括所述 的分类器, 和 /或所述的转发器。
本发明实施例的另一个方面是提供一种业务报文转发方法, 包括: 分类器接收第一业务报文, 所述第一业务报文包括报文特征; 所述分类器根据所述报文特征生成第二业务报文, 所述第二业务报文 包括所述第一业务报文以及至少两个业务链信息, 每个业务链信息用于指 示一个业务链的路由;
所述分类器将所述第二业务报文发送给转发器, 以使所述转发器根据 所述至少两个业务链信息转发所述第二业务报文。
本发明实施例的另一个方面是提供一种业务报文转发方法, 包括: 转发器接收分类器发送的第二业务报文, 所述第二业务报文包括第一 业务报文以及至少两个业务链信息, 每个业务链信息用于指示一个业务链 的路由, 所述第一业务报文是所述分类器接收到的报文, 所述第一业务报 文包括报文特征;
所述转发器根据所述至少两个业务链信息转发所述第二业务报文。 本发明实施例的另一个方面是提供一种业务报文转发方法, 包括: 所述分类器接收第三业务报文, 所述第三业务报文包括回传业务报文 及第一业务链信息, 所述第一业务链信息用于指示第一业务链的路由; 所述分类器根据所述第一业务链信息以及所述回传业务报文的报文 特征, 生成第四业务报文, 所述第四业务报文包括所述回传业务报文以及 第二业务链信息, 所述第二业务链信息用于指示第二业务链的路由; 所述分类器将所述第四业务报文发送给转发器, 以使所述转发器根据 所述第二业务链信息转发所述第四业务报文。
本发明实施例的另一个方面是提供一种业务报文转发方法, 包括: 所述转发器接收所述分类器发送的第四业务报文, 所述第四业务报文 包括回传业务报文以及第二业务链信息, 所述第二业务链信息用于指示第 二业务链的路由, 所述第四业务报文是所述分类器根据第一业务链信息以 及所述回传业务报文的报文特征生成的报文, 所述第一业务链信息用于指 示第一业务链的路由, 所述第一业务链信息以及所述回传业务报文是所述 分类器接收的第三业务报文中携带的信息;
所述转发器根据所述第二业务链信息转发所述第四业务报文。
本发明实施例提供的业务报文转发方法及装置, 依据每个业务链信息 指示一个业务链的路由, 通过在业务报文中携带多个业务链信息, 由多个 业务链的路由构成转发业务报文的完整路径, 相比于一条分类规则确定业 务报文完整的转发路径而言, 每条分类规则只需判断业务报文的部分报文 特征, 每个业务报文可以对应多条分类规则, 相比于每一业务报文只能对 应一条分类规则, 不需要在分类规则中对报文特征可能的目标值的所有的 排列组合进行设置, 大大减少了分类规则数量, 对应减少了转发规则及控 制信令的数量, 节省了存储资源和控制信令通道资源。 附图说明
图 1为现有技术的网络拓扑图;
图 2为本发明实施例提供的分类器的结构图;
图 3为本发明实施例提供的转发器的结构图;
图 4为本发明另一实施例提供的转发器的结构图;
图 5为本发明另一实施例提供的分类器的结构图;
图 6为本发明另一实施例提供的转发器的结构图;
图 7为本发明另一实施例提供的转发器的结构图; 图 8为本发明实施例提供的业务报文转发系统的结构图; 图 9为本发明另一实施例提供的业务报文转发系统的结构图; 图 10为本发明实施例提供的业务报文转发方法流程图;
图 11为本发明另一实施例提供的业务报文转发方法流程图; 图 12为本发明另一实施例提供的业务报文转发方法流程图; 图 13为本发明另一实施例提供的业务报文转发方法流程图; 图 14为本发明另一实施例提供的业务报文转发方法适用的信令图; 图 15为本发明另一实施例提供的业务报文转发方法适用的信令图; 图 16为本发明另一实施例提供的业务报文转发方法适用的信令图; 图 17为本发明另一实施例提供的业务报文转发方法适用的信令图。 具体实施方式
本说明书中所述的业务链 (service chain ) 包括一种业务实现路径, 在该路径上可以部署一个或多个业务功能实体, 共同完成对报文的业务处 理能力。 所述业务链也被称为业务路径 (service path ) 等。 业务链标识 ( chain ID或 CID ) 用于标识一条特定的业务链, 也可以称为业务链标签 ( chain labe l ) 等。
图 2为本发明实施例提供的分类器的结构图。 本发明实施例提供的分 类器可以执行业务报文转发方法实施例提供的处理流程, 如图 2所示, 分 类器 100包括第一接收模块 101、第一处理模块 102和第一发送模块 103, 其中, 第一接收模块 101用于接收第一业务报文, 所述第一业务报文包括 报文特征; 第一处理模块 102用于根据所述报文特征生成第二业务报文, 所述第二业务报文包括所述第一业务报文以及至少两个业务链信息, 每个 业务链信息用于指示一个业务链的路由; 第一发送模块 103用于将所述第 二业务报文发送给转发器, 以使所述转发器根据所述至少两个业务链信息 转发所述第二业务报文。
本发明实施例依据每个业务链信息指示一个业务链的路由, 通过在业 务报文中携带多个业务链信息, 由多个业务链的路由构成转发业务报文的 完整路径, 相比于一条分类规则确定业务报文完整的转发路径而言, 每条 分类规则只需判断业务报文的部分报文特征, 每个业务报文可以对应多条 分类规则, 相比于每一业务报文只能对应一条分类规则, 不需要在分类规 则中对报文特征可能的目标值的所有的排列组合进行设置, 大大减少了分 类规则数量, 对应减少了转发规则及控制信令的数量, 节省了存储资源和 控制信令通道资源。
在图 2的基础上, 第一处理模块 102进一歩用于根据一个或者至少两 个所述报文特征确定所述至少两个业务链信息。
所述业务链信息包括业务链标识, 所述业务链标识用于标识所述业务 链。
所述业务链信息包括业务链标识和业务链切换信息, 所述业务链切换 信息用于指示所述业务链之间的切换。
所述业务链切换信息包括业务索引, 所述业务索引用于标识所述转发 器对应的功能实体的个数。
所述业务链标识由业务链标识域的子字段表示, 所述业务链标识域包 含在第二业务报文中。
第一处理模块 102, 还用于确定第一分类规则; 还用于将所述报文特 征和所述第一分类规则进行匹配, 生成所述第二业务报文。
所述第一分类规则包括第一分类表项, 所述第一分类表项包括第一匹 配条件和所述业务链信息; 第一处理模块 102进一歩用于将所述报文特征 和所述第一分类表项对应的第一匹配条件进行匹配; 第一处理模块 102进 一歩用于当所述报文特征和所述第一分类表项对应的第一匹配条件一致 时, 将所述第一分类表项对应的所述业务链信息添加在所述第一业务报文 中, 生成所述第二业务报文。
本发明实施例提供的分类器可以具体用于执行上述图 10所提供的方 法实施例, 具体功能此处不再赘述。
本发明实施例每条分类规则只需判断业务报文的部分报文特征, 每个 业务报文可以对应多条分类规则, 相比于每一业务报文只能对应一条分类 规则, 不需要在分类规则中对报文特征可能的目标值的所有的排列组合进 行设置, 大大减少了分类规则数量, 对应减少了转发规则及控制信令的数 量, 节省了存储资源和控制信令通道资源。
图 3为本发明实施例提供的转发器的结构图。 本发明实施例提供的转 发器可以执行业务报文转发方法实施例提供的处理流程, 如图 3所示, 转 发器 120包括第二接收模块 121和第二发送模块 122, 其中, 第二接收模 块 121用于接收分类器发送的第二业务报文, 所述第二业务报文包括第一 业务报文以及至少两个业务链信息, 每个业务链信息用于指示一个业务链 的路由, 所述第一业务报文是所述分类器接收到的报文, 所述第一业务报 文包括报文特征; 第二发送模块 122用于根据所述至少两个业务链信息转 发所述第二业务报文。
本发明实施例依据每个业务链信息指示一个业务链的路由, 通过在业 务报文中携带多个业务链信息, 由多个业务链的路由构成转发业务报文的 完整路径, 相比于一条分类规则确定业务报文完整的转发路径而言, 每条 分类规则只需判断业务报文的部分报文特征, 每个业务报文可以对应多条 分类规则, 相比于每一业务报文只能对应一条分类规则, 不需要在分类规 则中对报文特征可能的目标值的所有的排列组合进行设置, 大大减少了分 类规则数量, 对应减少了转发规则及控制信令的数量, 节省了存储资源和 控制信令通道资源。
图 4为本发明另一实施例提供的转发器的结构图。 在图 3的基础上, 第二发送模块 122进一歩用于根据所述至少两个业务链信息转发所述第二 业务报文给至少一个功能实体。
转发器 120还包括第二处理模块 123, 第二处理模块 123用于确定第 一转发规则; 第二发送模块 122进一歩用于根据所述第一转发规则以及所 述至少两个业务链信息转发所述第二业务报文给所述至少一个功能实体。
所述业务链信息包括业务链标识, 所述业务链标识用于标识所述业务 链。
所述业务链信息包括业务链标识和业务链切换信息, 所述业务链切换 信息用于指示所述业务链之间的切换。
所述至少两个业务链信息至少包括第三业务链信息和第四业务链信 息; 第二发送模块 122进一歩用于根据所述第三业务链信息转发所述第二 业务报文给所述至少一个功能实体中的一个; 第二接收模块 121进一歩用 于接收所述至少一个功能实体中的一个处理后的所述第二业务报文; 第二 处理模块 123进一歩用于根据所述业务链切换信息, 确定所述第四业务链 信息; 第二发送模块 122还用于根据所述第四业务链信息继续转发所述第 二业务报文。
所述业务链切换信息包括业务索引, 所述业务索引用于标识所述转发 器对应的功能实体的个数, 且所述转发器转发所述第二业务报文给所述功 能实体之后, 所述业务索引被减一。
所述第一转发规则包括第一转发表项, 所述第一转发表项包括第三匹 配条件和功能实体标识; 第二处理模块 123还用于将所述第二业务报文的 所述业务链标识与所述第一转发表项的第三匹配条件进行匹配; 第二发送 模块 122进一歩用于当所述第二业务报文的所述业务链标识与所述第一转 发表项的第三匹配条件匹配时, 将所述第二业务报文发送到所述第一转发 表项对应的功能实体标识所标识的功能实体。
第二处理模块 123还用于若所述第二业务报文中所有所述业务索引都 减到 0, 删除所有所述业务链信息; 第二发送模块 122进一歩用于发送删 除所有所述业务链信息后的第二业务报文。
所述第一转发规则中的第三匹配条件包括第一业务链标识域; 第二处 理模块 123进一歩用于将所述第二业务报文的所述业务链标识对应的业务 链标识域的子字段与所述第三匹配条件中的所述第一业务链标识域的子 字段进行匹配。
本发明实施例提供的转发器可以具体用于执行上述图 1 1所提供的方 法实施例, 具体功能此处不再赘述。
本发明实施例提供了转发器依据不同形式的第二业务报文进行报文 转发的方法, 每个业务报文可以对应多条分类规则, 相比于每一业务报文 只能对应一条分类规则, 不需要在分类规则中对报文特征可能的目标值的 所有的排列组合进行设置, 大大减少了分类规则数量, 对应减少了转发规 则及控制信令的数量, 节省了存储资源和控制信令通道资源。
图 5为本发明另一实施例提供的分类器的结构图。 本发明实施例提供 的分类器可以执行业务报文转发方法实施例提供的处理流程,如图 5所示, 分类器 140包括第三接收模块 141、第三处理模块 142和第三发送模块 143, 其中, 第三接收模块 141用于接收第三业务报文, 所述第三业务报文包括 回传业务报文及第一业务链信息, 所述第一业务链信息用于指示第一业务 链的路由; 第三处理模块 142用于根据所述第一业务链信息以及所述回传 业务报文的报文特征, 生成第四业务报文, 所述第四业务报文包括所述回 传业务报文以及第二业务链信息, 所述第二业务链信息用于指示第二业务 链的路由; 第三发送模块 143用于将所述第四业务报文发送给转发器, 以 使所述转发器根据所述第二业务链信息转发所述第四业务报文。
本发明实施例依据每个业务链信息指示一个业务链的路由, 通过多次 更改业务报文中携带的业务链信息, 由多次更改的业务链的路由构成转发 业务报文的完整路径, 相比于一条分类规则确定业务报文完整的转发路径 而言, 每条分类规则只需判断业务报文的部分报文特征, 每个业务报文可 以对应多条分类规则, 相比于每一业务报文只能对应一条分类规则, 不需 要在分类规则中对报文特征可能的目标值的所有的排列组合进行设置, 大 大减少了分类规则数量, 对应减少了转发规则及控制信令的数量, 节省了 存储资源和控制信令通道资源。
在图 5的基础上, 第三处理模块 142进一歩用于根据所述第一业务链 信息以及所述回传业务报文的一个或者至少两个所述报文特征确定所述 第二业务链信息。
所述第一业务链信息包括第一业务链标识, 所述第一业务链标识用于 标识所述第一业务链, 所述第二业务链信息包括第二业务链标识, 所述第 二业务链标识用于标识所述第二业务链。
所述第一业务链信息包括第一业务链标识和第一业务链切换信息, 所 述第一业务链切换信息用于指示所述第一业务链之间的切换, 所述第二业 务链信息包括第二业务链标识和第二业务链切换信息, 所述第二业务链切 换信息用于指示所述第二业务链之间的切换。
所述第一业务链切换信息包括第一业务索引, 所述第一业务索引用于 标识所述转发器对应所述第一业务链的功能实体的个数, 所述第二业务链 切换信息包括第二业务索引, 所述第二业务索引用于标识所述转发器对应 所述第二业务链的功能实体的个数。
所述第一业务链标识由第一业务链标识域的子字段表示, 所述第一业 务链标识域包含在所述第三业务报文中, 所述第二业务链标识由第二业务 链标识域的子字段表示, 所述第二业务链标识域包含在所述第四业务报文 中。
第三处理模块 142还用于确定第二分类规则; 还用于将所述第一业务 链信息以及所述回传业务报文的报文特征分别与所述第二分类规则进行 匹配, 生成第四业务报文。
所述第二分类规则包括第二分类表项, 所述第二分类表项包括第二匹 配条件和第二业务链信息; 第三处理模块 142进一歩用于将所述第一业务 链信息与所述第二分类表项对应的第二匹配条件进行匹配, 且将所述回传 业务报文的报文特征与所述第二分类表项对应的第二匹配条件进行匹配; 第三处理模块 142进一歩用于当所述第一业务链信息与所述第二匹配条件 一致且所述回传业务报文的报文特征与所述第二匹配条件一致时, 将所述 第二分类表项对应的所述第二业务链信息替换为所述第一业务链信息添 加在所述第三业务报文中, 生成所述第四业务报文。
所述第二分类规则中的第二匹配条件包括第一业务链标识的一部分; 第三处理模块 142进一歩用于将所述第一业务链信息的一部分与所述第二 匹配条件中的所述第一业务链标识的一部分进行匹配。
本发明实施例提供的分类器可以具体用于执行上述图 12所提供的方 法实施例, 具体功能此处不再赘述。
本发明实施例提供了转发器依据不同形式的第二业务报文进行报文 转发的方法, 每个业务报文可以对应多条分类规则, 相比于每一业务报文 只能对应一条分类规则, 不需要在分类规则中对报文特征可能的目标值的 所有的排列组合进行设置, 大大减少了分类规则数量, 对应减少了转发规 则及控制信令的数量, 节省了存储资源和控制信令通道资源。
图 6为本发明另一实施例提供的转发器的结构图。 本发明实施例提供 的转发器可以执行业务报文转发方法实施例提供的处理流程,如图 6所示, 转发器 160包括第四接收模块 161和第四发送模块 162, 其中, 第四接收 模块 161用于接收所述分类器发送的第四业务报文, 所述第四业务报文包 括回传业务报文以及第二业务链信息, 所述第二业务链信息用于指示第二 业务链的路由, 所述第四业务报文是所述分类器根据第一业务链信息以及 所述回传业务报文的报文特征生成的报文, 所述第一业务链信息用于指示 第一业务链的路由, 所述第一业务链信息以及所述回传业务报文是所述分 类器接收的第三业务报文中携带的信息; 第四发送模块 162用于根据所述 第二业务链信息转发所述第四业务报文。
本发明实施例依据每个业务链信息指示一个业务链的路由, 通过多次 更改业务报文中携带的业务链信息, 由多次更改的业务链的路由构成转发 业务报文的完整路径, 相比于一条分类规则确定业务报文完整的转发路径 而言, 每条分类规则只需判断业务报文的部分报文特征, 每个业务报文可 以对应多条分类规则, 相比于每一业务报文只能对应一条分类规则, 不需 要在分类规则中对报文特征可能的目标值的所有的排列组合进行设置, 大 大减少了分类规则数量, 对应减少了转发规则及控制信令的数量, 节省了 存储资源和控制信令通道资源。
图 7为本发明另一实施例提供的转发器的结构图。 在图 6的基础上, 第四发送模块 162进一歩用于根据所述第二业务链信息转发所述第四业务 报文给所述分类器。
转发器 160还包括第四处理模块 163, 第四处理模块 163用于确定第 二转发规则; 第四发送模块 162进一歩用于根据所述第二转发规则以及所 述第二业务链信息转发所述第四业务报文给所述分类器。
所述第二业务链信息包括第二业务链标识, 所述第二业务链标识用于 标识所述第二业务链。
所述第二转发规则包括第二转发表项, 所述第二转发表项包括第四匹 配条件和所述分类器标识; 第四处理模块 163, 还用于将所述第二业务链 信息中的所述第二业务链标识与所述第二转发表项的所述第四匹配条件 进行匹配; 第四发送模块 162进一歩用于当所述第二业务链标识与所述第 二转发表项的所述第四匹配条件一致时, 将所述第四业务报文发送到所述 第二转发表项对应的所述分类器标识所标识的所述分类器。
本发明实施例提供的转发器可以具体用于执行上述图 13所提供的方 法实施例, 具体功能此处不再赘述。
本发明实施例依据每个业务链信息指示一个业务链的路由, 通过多次 更改业务报文中携带的业务链信息, 由多次更改的业务链的路由构成转发 业务报文的完整路径, 相比于一条分类规则确定业务报文完整的转发路径 而言, 每条分类规则只需判断业务报文的部分报文特征, 每个业务报文可 以对应多条分类规则, 相比于每一业务报文只能对应一条分类规则, 不需 要在分类规则中对报文特征可能的目标值的所有的排列组合进行设置, 大 大减少了分类规则数量, 对应减少了转发规则及控制信令的数量, 节省了 存储资源和控制信令通道资源。
图 8为本发明实施例提供的业务报文转发系统的结构图。 本发明实施 例提供的业务报文转发系统可以执行业务报文转发方法实施例提供的处 理流程, 如图 8所示, 业务报文转发系统 180包括上述实施例中的分类器 100和转发器 120。
本发明实施例提供的业务报文转发系统可以执行业务报文转发方法 实施例提供的处理流程。
图 9为本发明另一实施例提供的业务报文转发系统的结构图。 本发明 实施例提供的业务报文转发系统可以执行业务报文转发方法实施例提供 的处理流程, 如图 9所示, 业务报文转发系统 190包括上述实施例中的分 类器 140和转发器 160。
本发明实施例提供的业务报文转发系统可以执行业务报文转发方法 实施例提供的处理流程。
图 10 为本发明实施例提供的业务报文转发方法流程图。 本发明实施 例适用于依据业务报文携带的多个业务链信息转发业务报文, 具体的业务 报文转发方法歩骤如下:
歩骤 S 101、分类器接收第一业务报文, 所述第一业务报文包括报文特 征;
分类器接收网关 GPRS 支持节点发送的用户上行业务报文, 所述业务 报文包括多个报文特征, 如源端口号、 源 IP、 目的端口号、 目的 IP和业 务类型, 且本发明实施例不限于此。
歩骤 S 102、所述分类器根据所述报文特征生成第二业务报文, 所述第 二业务报文包括所述第一业务报文以及至少两个业务链信息, 每个业务链 信息用于指示一个业务链的路由;
所述分类器依据所述报文特征生成至少两个业务链信息, 每个业务链 信息用于指示一个业务链的路由, 并将所述至少两个业务链信息和所述第 一业务报文封装为第二业务报文, 业务链的路由是转发器将所述第二业务 报文至少发送给一个功能实体的路径。
歩骤 S 103、所述分类器将所述第二业务报文发送给转发器, 以使所述 转发器根据所述至少两个业务链信息转发所述第二业务报文。
所述分类器将生成的第二业务报文发送给转发器, 以使转发器根据第 二业务报文携带的至少两个业务链信息转发所述第二业务报文。
本发明实施例依据每个业务链信息指示一个业务链的路由, 通过在业 务报文中携带多个业务链信息, 由多个业务链的路由构成转发业务报文的 完整路径, 相比于一条分类规则确定业务报文完整的转发路径而言, 每条 分类规则只需判断业务报文的部分报文特征, 每个业务报文可以对应多条 分类规则, 相比于每一业务报文只能对应一条分类规则, 不需要在分类规 则中对报文特征可能的目标值的所有的排列组合进行设置, 大大减少了分 类规则数量, 对应减少了转发规则及控制信令的数量, 节省了存储资源和 控制信令通道资源。
在上述实施例的基础上, 所述分类器根据一个或者至少两个所述报文 特征确定所述至少两个业务链信息。
所述业务链信息包括业务链标识, 所述业务链标识用于标识所述业务 链。
所述业务链信息包括业务链标识和业务链切换信息, 所述业务链切换 信息用于指示所述业务链之间的切换。
所述业务链切换信息包括业务索引, 所述业务索引用于标识所述转发 器对应的功能实体的个数。
如下表 1所示是第二业务报文的结构示意图, 本发明实施例中的第二 业务报文包括三条业务链信息, 三条业务链信息可以根据第一业务报文的 一个或者至少两个所述报文特征确定。 每条业务链信息如 " CID1 SI=2 " , 包括业务链标识 CID1和业务链切换信息 SI=2,业务链标识 CID1用于标识 所述业务链, 业务链切换信息用于指示所述业务链之间的切换, 具体 SI=2 用于标识所述转发器对应的功能实体的个数。 另外, 业务链信息还可以只 包括业务链标识、 不包括业务链切换信息。 业务链信息
Figure imgf000016_0001
第一业务报文 表 1
所述业务链标识由业务链标识域的子字段表示, 所述业务链标识域包 含在第二业务报文中。
在本发明实施例中, 所述业务链标识还可以由业务链标识域的子字段 表示,如下表 2所示,第二业务报文包括业务链标识域,其中, CIDl&maska 是业务链标识 CID1 通过掩码 maska 后获得的 CID1 的部分比特, CID2&maskb是业务链标识 CID2通过掩码 maskb后获得的 CID2的部分比 特, CID3&maskc是业务链标识 CID3通过掩码 maskc后获得的 CID3的部分 比特, CIDl&maska, CID2&maskb和 CID3&maskc分别是业务链标识域的子 字段, 且 CIDl&maska、 CID2&maskb和 CID3&maskc组成业务链标识。
业务链标识域
CID l&maska CID2&maskb CID3&maskc 第一业务报文 表 2
另外, 第二业务报文还可以包括多个业务链标识域, 每个业务链标识 域存放一个业务链标识, 如下表 3所示, CID#1域表示业务链标识域 1, CID#1域表示业务链标识域 2, 业务链标识域 1中存放业务链标识 CID1 , 业务链标识域 2中存放业务链标识 CID3
CID#1域 CID1
CID#2域 CID3 第一业务报文 表 3
本发明实施例提供了不同结构的第二业务报文, 以示意业务链信息可 以在第二业务报文中携带的方式, 同时第二业务报文是否携带其他信元, 以及以其他封装方式携带业务链信息, 本发明实施例不做限定。 在上述实施例的基础上, 业务报文转发方法还包括: 所述分类器确定 第一分类规则; 所述分类器根据所述报文特征生成第二业务报文包括: 所 述分类器将所述报文特征和所述第一分类规则进行匹配, 生成所述第二业 务报文。
所述第一分类规则包括第一分类表项, 所述第一分类表项包括第一匹 配条件和所述业务链信息, 所述分类器将所述报文特征和所述第一分类规 则进行匹配, 生成所述第二业务报文包括: 所述分类器将所述报文特征和 所述第一分类表项对应的第一匹配条件进行匹配, 当二者一致时, 所述分 类器将所述第一分类表项对应的所述业务链信息添加在所述第一业务报 文中, 生成所述第二业务报文。
例如, 分类器对应的分类规则具体如下:
1、 源端口号 ==90, CID=CID0, SI=1 ;
2、 源端口号 ==80, CID=CID1, SI=2 ;
3、 业务类型 ==视频流, CID=CID2, SI=2 ;
4、 目的 IP==IP1, CID=CID3, SI=1 ;
5、 目的 IP==IP2, CID=CID4, SI=1 ;
目的 IP为 IP1、 源端口号为 80的视频流报文与上述 2、 3、 4三条分 类规则匹配, 分类器将 CID1和 SI=2、 CID2和 SI=2, 以及 CID3和 SI=1 的对应关系添加在所述第一业务报文中构成所述第二业务报文, 所述第二 业务报文的格式如上表 1所示。
例如, 分类器确定的分类规则具体如下:
1、 源端口号 ==80, CID I =CIDl&maska; 〃若业务报文的源端口号为 80, 设置业务报文的业务链标识最低 8bit为 CID1的最低 8bit ;
2、 业务类型 ==视频流, CID I =CID2&maskb; 〃若业务报文是视频流, 设置业务报文的业务链标识中间 8bit为 CID2的中间 8bit;
3、目的 IP==IP1, CID I =CID3&maskc;〃若业务报文的目的 IP是 IP1 , 设置业务报文的业务链标识最高 8bit为 CID3的最高 8bit;
其中, CIDl&maska, CID2&maskb和 CID3&maskc互不相等。
目的 IP为 IP1、 源端口号为 80的视频流报文与上述三条匹配条件匹 配, 分类器将 CIDl&maska、 CID2&maskb和 CID3&maskc添加在所述第一业 务报文中构成所述第二业务报文,所述第二业务报文的格式如上表 2所示。 例如, 分类器确定的分类规则具体如下:
1、 源端口号 ==90, CID#1=CID0; 〃若业务报文的源端口号是 90, 将 CID0设置在业务报文的 CID#1域中;
2、 源端口号 ==80, CID#1=CID1 ; 〃若业务报文的源端口号是 80, 将
CID1设置在业务报文的 CID#1域中
3、 目的 IP==IP1, CID#2=CID3 若业务报文的目的 IP是 IP1 , 将 CID3设置在业务报文的 CID#2域中
4、 目的 IP==IP2, CID#2=CID4 若业务报文的目的 IP是 IP2 , 将 CID4设置在业务报文的 CID#2域中
目的 IP为 IP1、源端口号为 80的视频流报文与上述 2、 3两条分类规 则匹配, 分类器将 CID1添加在业务报文的 CID#1域, 将 CID3添加在业务 报文的 CID#2域, 构成所述第二业务报文, 所述第二业务报文的格式如上 表 3所示。
在本发明实施例中,可以通过控制器将分类规则下发给分类器,另外, 分类器也可以通过预配置的方式或从其他配置网元获取分类规则, 分类规 则并不限定于上述举例中的形式, 而且分类规则之间还可以设定优先级, 对应的第二业务报文中携带的业务链信息遵循与分类规则相同的优先级。
本发明实施例每条分类规则只需判断业务报文的部分报文特征, 每个 业务报文可以对应多条分类规则, 相比于每一业务报文只能对应一条分类 规则, 不需要在分类规则中对报文特征可能的目标值的所有的排列组合进 行设置, 大大减少了分类规则数量, 对应减少了转发规则及控制信令的数 量, 节省了存储资源和控制信令通道资源。
图 11 为本发明另一实施例提供的业务报文转发方法流程图。 本发明 实施例提供的业务报文转发方法具体歩骤如下:
歩骤 S201、转发器接收分类器发送的第二业务报文, 所述第二业务报 文包括第一业务报文以及至少两个业务链信息, 每个业务链信息用于指示 一个业务链的路由, 所述第一业务报文是所述分类器接收到的报文, 所述 第一业务报文包括报文特征;
分类器依据接收到网关 GPRS支持节点发送的用户上行业务报文即第 一业务报文的报文特征生成至少两个业务链信息, 并将第一业务报文和至 少两个业务链信息封装在一起构成的第二业务报文, 向转发器发送所述第 二业务报文。
歩骤 S202、所述转发器根据所述至少两个业务链信息转发所述第二业 务报文。
所述转发器根据所述第二业务报文携带的所述至少两个业务链信息 转发所述第二业务报文。
本发明实施例依据每个业务链信息指示一个业务链的路由, 通过在业 务报文中携带多个业务链信息, 由多个业务链的路由构成转发业务报文的 完整路径, 相比于一条分类规则确定业务报文完整的转发路径而言, 每条 分类规则只需判断业务报文的部分报文特征, 每个业务报文可以对应多条 分类规则, 相比于每一业务报文只能对应一条分类规则, 不需要在分类规 则中对报文特征可能的目标值的所有的排列组合进行设置, 大大减少了分 类规则数量, 对应减少了转发规则及控制信令的数量, 节省了存储资源和 控制信令通道资源。
在图 11 对应的实施例的基础上, 所述转发器根据所述至少两个业务 链信息转发所述第二业务报文包括: 所述转发器根据所述至少两个业务链 信息转发所述第二业务报文给至少一个功能实体。
所述转发器确定第一转发规则; 所述转发器根据所述至少两个业务链 信息转发所述第二业务报文给所述至少一个功能实体包括: 所述转发器根 据所述第一转发规则以及所述至少两个业务链信息转发所述第二业务报 文给所述至少一个功能实体。
本发明实施例中转发器对应的转发规则具体如下:
Match (CID= =CID0) SF3 ;
Match (CID= =CID1) SF1、 SF2 ;
Match (CID= =CID2) SF4、 SF5 ;
Match (CID= =CID3) SF6;
Match (CID= =CID4) SF7;
若转发器接收到的第二业务报文携带有业务链标识 CID1 ,则转发器依 CID1 从转发规则 中获取到与 CID1 对应的转发规则为 "Match (CID==CID1) : SF1、 SF2,,, 转发器将第二业务报文依次发送到 SF1 和 SF2进行处理。若第二业务报文携带有业务链标识 CID3 , 则转发器只将 第二业务报文发送到 SF6进行处理。
所述业务链信息包括业务链标识, 所述业务链标识用于标识所述业务 链。
所述业务链信息包括业务链标识和业务链切换信息, 所述业务链切换 信息用于指示所述业务链之间的切换。
转发器接收到的第二业务报文的结构具体可以如表 1、 表 2、 表 3所 此处不再赘述。
所述至少两个业务链信息至少包括第三业务链信息和第四业务链信 息, 所述转发器根据所述至少两个业务链信息转发所述第二业务报文包 括: 所述转发器根据所述第三业务链信息转发所述第二业务报文给所述至 少一个功能实体中的一个; 所述转发器接收所述至少一个功能实体中的一 个处理后的所述第二业务报文, 根据所述业务链切换信息, 确定所述第四 业务链信息, 并根据所述第四业务链信息继续转发所述第二业务报文。
所述业务链切换信息包括业务索引, 所述业务索引用于标识所述转发 器对应的功能实体的个数, 且所述转发器转发所述第二业务报文给所述功 能实体之后, 所述业务索引被减一。
所述第一转发规则包括第一转发表项, 所述第一转发表项包括第三匹 配条件和功能实体标识, 所述方法还包括: 所述转发器将所述第二业务报 文的所述业务链标识与所述第一转发表项的第三匹配条件进行匹配, 当二 者一致时, 所述转发器将所述第二业务报文发送到所述第一转发表项对应 的功能实体标识所标识的功能实体。
上述转发规则中的一个表项如 "Match (CID==CID2) : SF4、 SF5 " 包括 匹配条件 Match (CID==CID2)和功能实体标识 SF4、 SF5。
若转发器接收到表 1所示的第二业务报文后, 根据第二业务报文上封 装的第一个业务链信息 CID1和 SI值, 从上述转发规则中获取到与 CID1 对应的转发规则 "Match (CID==CIDl) : SF1、 SF2 " , 将第二业务报文先转 发到 SF1, SF1 对第二业务报文执行业务处理, 并将处理完成的第二业务 报文发送给转发器。 同时, SF1 或转发器将第二业务报文中封装的 CID1 对应的 SI值减一, 变成 SI=1, SI值不为 0, 则转发器根据 CID1及新的 SI=1,按照该转发规则将第二业务报文继续转发到 SF2执行业务报文处理。 当 SF2将处理完成的第二业务报文发送给转发器时, SF2或转发器将第二 业务报文封装的 CID1对应的 SI值减一, 变成 SI=0。
若所述第二业务报文中所有所述业务索引都减到 0, 所述转发器删除 所有所述业务链信息, 并发送删除所有所述业务链信息后的第二业务报 文。
由于 CID1对应的 SI值已减为 0, 则转发器切换到下一个业务链标识 即 CID2 , 并根据 CID2 对应的 SI 值及该业务链标识对应的转发规则 "Match (CID==CID2) : SF4、 SF5 " , 将业务报文依次转发到 SF4, SF5进行 处理。同样,该转发业务链上的每个 SF或转发器在每次业务处理后将 CID2 对应的 SI值减一, 直至该 SI值减为 0后, 转发器按照同样的逻辑切换到 业务链标识 CID3执行 CID3对应的转发规则及业务处理, 当业务标签头中 所有的业务链标识对应的 SI 均已减为 0, 则所有业务链标识均已转发完 成。 转发器删除业务报文所封装的业务标签头, 并将处理完成的业务报文 发送到外网设备。
另外, 转发器或 SF检测到任一 CID对应的 SI减为 0时, 可以从业务 标签头中将该 CID及对应的 SI删除,从而保证业务报文封装的第一个 CID 就是需要执行业务转发的业务链标识, 转发器只需按照业务标签头中第一 个 CID进行转发; 当转发器发现所有的 CID和 SI的对应关系均已被删除, 则认为业务报文已完成业务转发, 并将业务报文直接发送到外网设备。
所述第一转发规则中的第三匹配条件包括第一业务链标识域; 所述转 发器将所述第二业务报文的所述业务链标识与所述第一转发表项的第三 匹配条件进行匹配包括:
所述转发器将所述第二业务报文的所述业务链标识对应的业务链标 识域的子字段与所述第三匹配条件中的所述第一业务链标识域的子字段 进行匹配。
在本发明实施例中转发器对应的转发规则还可以具体如下:
1、 Match (CID&maska==CIDla&maska): send to SF1 ; //若业务报文 CID 的最低 8bit与 CIDla的最低 8bit相同, 将业务报文发送到 SF1 ; 2、 Match (CID&maska==CIDla&maska, input_SF==SFl) : send to SF2; 〃若业务报文 CID的最低 8bit与 CIDla的最低 8bit相同, 且业务报文是 由 SF1发送到转发器的, 则将业务报文发送到 SF2;
3、 Match (CID&maska==CIDla&maska, input_SF==SF2): CID&maska=0, goto- table; 〃若业务报文 CID的最低 8bit与 CIDla的最低 8bit相同, 且业务报文由 SF2发送到转发器, 则将业务报文 CID的最低 8bit清零, 并重新执行后续转发规则匹配;
4、 Match (CID&maskb==CIDlb&maskb): send to SF4;
5、 Match (CID&maskb==CIDlb&maskb, input_SF==SF4): send to SF5; 6、 Match (CID&maskb==CIDlb&maskb, input_SF==SF5) : CID&maskb=0, goto - table;
7、 Match (CID&maskc==CIDlc&maskc) : send to SF6;
8、 Match (CID&maskc==CIDlc&maskc, input_SF==SF6): CID&maskb=0, goto - table;
CIDla, CIDlb和 CIDlc分别与 CID1、 CID2和 CID3可以相同或不同。 转发器接收到如表 2所示的第二业务报文后, 将第二业务报文上封装 的业务链标识域, 具体为业务链标识域的子字段与转发规则进行匹配, 若 第二业务报文携带的 CID的低 8bit与 CIDla的低 8bit相同, 则第二业务 报文与转发规则 1匹配成功, 则转发器将第二业务报文转发到 SF1进行处 理, 转发器接收到 SF1返回的第二业务报文并进行再次匹配, 与转发规则 2匹配成功, 并进一歩将第二业务报文转发到 SF2。
转发器接收到 SF2返回的第二业务报文, 第二业务报文与转发规则 3 匹配成功, 并按照转发规则 3将 CID的低 8bit清零后按照 goto-table的 指令将第二业务报文与后续转发规则进行匹配, 按照转发规则 4及转发规 则 5依次将第二业务报文发送到 SF4及 SF5进行业务处理。
转发器接收到 SF5返回的第二业务报文, 第二业务报文与转发规则 6 匹配成功, 转发器再次将 CID的中间 8bit清零并继续实现后续转发规则 匹配。 当第二业务报文中业务链标识的所有比特位均已清零后, 删除业务 链信息, 并将删除掉业务链信息后的第二业务报文发送到外网设备。
另外, 本发明实施例还可包括两个不同的转发器(转发器 1和转发器 2 ) 分别对第二业务报文进行转发, 且转发器 1的转发规则为: Match (CID#1==CID0): SF1 ;
Match (CID#1==CID1): SF1, SF2;
转发器 2的转发规则为:
Match (CID#2==CID3): SF3, SF4;
Match (CID#2==CID4): SF4, SF5;
转发器 1接收到如表 3所示的第二业务报文后, 获取第二业务报文
CID#I域中的业务链标识, 并根据 cum域中的业务链标识匹配到转发规 则" Match (CID#l==CIDl): SF1 , SF2 ", 则将第二业务报文依次转发到 SF1 及 SF2进行业务处理;具体的转发过程与上述实施例一致,此处不再赘述。 当转发器 1完成基于 CID#1域的第二业务报文转发后, 将第二业务报文发 送到下一跳转发器即转发器 2, 同时转发器 1可以删除 CID#1域仅保留业 务报文的 CID#2域。
转发器 2接收到第二业务报文后, 对第二业务报文的 CID#2域进行匹 配, 将第二业务报文依次转发到 SF3及 SF4进行业务处理; 当所有的第二 业务报文转发都已完成后, 转发器 2可以删除 CID#2域并将处理后的第二 业务报文发送到外网设备。
在本发明实施例中,可以通过控制器将转发规则下发给转发器,另外, 转发器也可以通过预配置的方式或从其他配置网元获取转发规则, 转发规 则并不限定于上述举例中的形式, 而且转发规则之间还可以设定优先级, 对应的转发器可以依据转发规则的优先级转发所述第二业务报文。
本发明实施例提供了转发器依据不同形式的第二业务报文进行报文 转发的方法, 每个业务报文可以对应多条分类规则, 相比于每一业务报文 只能对应一条分类规则, 不需要在分类规则中对报文特征可能的目标值的 所有的排列组合进行设置, 大大减少了分类规则数量, 对应减少了转发规 则及控制信令的数量, 节省了存储资源和控制信令通道资源。
图 12 为本发明另一实施例提供的业务报文转发方法流程图。 本发明 实施例提供的业务报文转发方法具体歩骤如下:
歩骤 S601、所述分类器接收第三业务报文, 所述第三业务报文包括回 传业务报文及第一业务链信息, 所述第一业务链信息用于指示第一业务链 的路由;
本发明实施例中的分类器接收到转发器返回的第三业务报文, 所述第 三业务报文包括回传业务报文及第一业务链信息, 所述回传业务报文可以 是上述实施例中的第一业务报文, 也可以是经过功能实体处理过的第一业 务报文, 第一业务链信息用于指示分类器在接收到第三业务报文之前, 转 发所述回传业务报文的第一业务链的路由。
歩骤 S602、所述分类器根据所述第一业务链信息以及所述回传业务报 文的报文特征, 生成第四业务报文, 所述第四业务报文包括所述回传业务 报文以及第二业务链信息, 所述第二业务链信息用于指示第二业务链的路 由;
分类器依据所述第一业务链信息和所述回传业务报文的报文特征生 成第二业务链信息, 第二业务链信息替代第一业务链信息生成第四业务报 文, 或者将第二业务链信息添加在第三业务报文中形成第四业务报文, 所 述第二业务链信息用于指示转发所述第四业务报文的第二业务链的路由, 第二业务链的路由是转发器将所述第四业务报文至少发送给一个功能实 体的路径。
歩骤 S603、所述分类器将所述第四业务报文发送给转发器, 以使所述 转发器根据所述第二业务链信息转发所述第四业务报文。
所述分类器将生成的所述第四业务报文发送给转发器, 以使转发器根 据所述第四业务报文中携带的第二业务链信息转发所述第四业务报文。
本发明实施例依据每个业务链信息指示一个业务链的路由, 通过多次 更改业务报文中携带的业务链信息, 由多次更改的业务链的路由构成转发 业务报文的完整路径, 相比于一条分类规则确定业务报文完整的转发路径 而言, 每条分类规则只需判断业务报文的部分报文特征, 每个业务报文可 以对应多条分类规则, 相比于每一业务报文只能对应一条分类规则, 不需 要在分类规则中对报文特征可能的目标值的所有的排列组合进行设置, 大 大减少了分类规则数量, 对应减少了转发规则及控制信令的数量, 节省了 存储资源和控制信令通道资源。
在上述实施例的基础上, 所述分类器根据所述第一业务链信息以及所 述回传业务报文的一个或者至少两个所述报文特征确定所述第二业务链 I Ft自、。
第二业务链信息是通过第三业务报文携带的第一业务链信息以及所 述回传业务报文的一个或者至少两个所述报文特征确定的, 即第三业务报 文携带的第一业务链信息也作为确定第二业务链信息的一个条件。
所述第一业务链信息包括第一业务链标识, 所述第一业务链标识用于 标识所述第一业务链, 所述第二业务链信息包括第二业务链标识, 所述第 二业务链标识用于标识所述第二业务链。
所述第一业务链信息包括第一业务链标识和第一业务链切换信息, 所 述第一业务链切换信息用于指示所述第一业务链之间的切换, 所述第二业 务链信息包括第二业务链标识和第二业务链切换信息, 所述第二业务链切 换信息用于指示所述第二业务链之间的切换。
所述第一业务链切换信息包括第一业务索引, 所述第一业务索引用于 标识所述转发器对应所述第一业务链的功能实体的个数, 所述第二业务链 切换信息包括第二业务索引, 所述第二业务索引用于标识所述转发器对应 所述第二业务链的功能实体的个数。
所述第一业务链标识由第一业务链标识域的子字段表示, 所述第一业 务链标识域包含在所述第三业务报文中, 所述第二业务链标识由第二业务 链标识域的子字段表示, 所述第二业务链标识域包含在所述第四业务报文 中。
第三业务报文包括至少两个第一业务链信息, 第一业务链信息包括第 一业务链标识, 或者第一业务链信息包括第一业务链标识和第一业务链切 换信息, 所述第一业务链标识用于标识转发回传业务报文的第一业务链, 第一业务链切换信息指示所述第一业务链之间的切换, 所述第一业务链切 换信息包括第一业务索引, 所述第一业务索引用于标识所述转发器对应所 述第一业务链的功能实体的个数。所述第一业务链标识还可以由第一业务 链标识域的子字段表示, 所述第一业务链标识域包含在所述第三业务报文 中。 第三业务报文的格式与表 1、 表 2、 表 3中任一一种报文格式一致。
第四业务报文包括至少两个第二业务链信息, 第二业务链信息包括第 二业务链标识, 或者第二业务链信息包括第二业务链标识和第二业务链切 换信息, 所述第二业务链标识用于标识转发第四业务报文的第二业务链, 第二业务链切换信息指示所述第二业务链之间的切换, 所述第二业务链切 换信息包括第二业务索引, 所述第二业务索引用于标识所述转发器对应所 述第二业务链的功能实体的个数。所述第二业务链标识还可以由第二业务 链标识域的子字段表示, 所述第二业务链标识域包含在所述第四业务报文 中。 第四业务报文的格式与表 1、 表 2、 表 3中任一一种报文格式一致。
本发明实施例提供的业务报文转发方法还包括: 所述分类器确定第二 分类规则; 所述分类器根据所述第一业务链信息以及所述回传业务报文的 报文特征, 生成第四业务报文包括: 所述分类器将所述第一业务链信息以 及所述回传业务报文的报文特征分别与所述第二分类规则进行匹配, 生成 第四业务报文。
所述第二分类规则包括第二分类表项, 所述第二分类表项包括第二匹 配条件和第二业务链信息; 所述分类器将所述第一业务链信息以及所述回 传业务报文的报文特征分别与所述第二分类规则进行匹配, 生成第四业务 报文包括: 所述分类器将所述第一业务链信息与所述第二分类表项对应的 第二匹配条件进行匹配, 且将所述回传业务报文的报文特征与所述第二分 类表项对应的第二匹配条件进行匹配, 当所述第一业务链信息与所述第二 匹配条件一致且所述回传业务报文的报文特征与所述第二匹配条件一致 时, 所述分类器将所述第二分类表项对应的所述第二业务链信息替换为所 述第一业务链信息添加在所述第三业务报文中, 生成所述第四业务报文。
本发明实施例分类器对应的分类规则具体如下:
1、 目的 IP==IP 1&CIDA, CID=CIDb l ; 〃若业务报文的目的 IP为 ΙΡ Ι , 且业务报文当前携带的 CID与 CIDA匹配,设置业务报文新的 CID为 CIDb l ; 此处 CIDA可以为一个特定的值(如 CIDal),也可以是多个特定值的组合
(如 CIDal或 CIDa2 ) , 或者是一个特定的范围(如 CIDal, mask=maskA )。 业务报文当前携带的 CID只要处于上述 CIDA的覆盖范围内, 则可以认为 符合该匹配条件, 下同。
2、 目的 IP==IP2&CIDA, CID=CIDb2 ;
3、 源 IP==IP3&CIDB, CID=CIDc l ;
4、 源 IP==IP4&CIDB, CID=CIDc2 ;
例如目的 IP为 IP1、 源端口号为 80的携带有 CIDa2的视频流报文即 第三业务报文, 与 "目的 IP==IP1&CIDA , CID=CIDb l " 匹配, 则分类器将 第三业务报文中的 CIDa2替换为 CIDbl , 生成第四业务报文。
所述第二分类规则中的第二匹配条件包括第一业务链标识的一部分; 所述分类器将所述第一业务链信息与所述第二分类表项对应的第二匹配 条件进行匹配包括: 所述分类器将所述第一业务链信息的一部分与所述第 二匹配条件中的所述第一业务链标识的一部分进行匹配。
若分类器接收到与表 2格式一致的第三业务报文, 则第二分类规则中 的第二匹配条件包括第一业务链标识的一部分, 所述分类器将所述第一业 务链信息的一部分与所述第二匹配条件中的所述第一业务链标识的一部 分进行匹配,如转发规则为 "目的 IP==IP1& ( CIDA&MASKA ), CID=CIDb l,,, 则分类器将目的 IP为 IP1、 源端口号为 80的携带有 CIDa2的视频流报文 即第三业务报文对应的 CIDa2 经过掩码获得 CIDa2&MASKA, 并将 CIDa2&MASKA与转发规则中的 CIDA&MASKA进行匹配。
在本发明实施例中,可以通过控制器将分类规则下发给分类器,另外, 分类器也可以通过预配置的方式或从其他配置网元获取分类规则, 分类规 则并不限定于上述举例中的形式, 而且分类规则之间还可以设定优先级, 对应的第二业务报文中携带的业务链信息遵循与分类规则相同的优先级。
本发明实施例依据每个业务链信息指示一个业务链的路由, 通过多次 更改业务报文中携带的业务链信息, 由多次更改的业务链的路由构成转发 业务报文的完整路径, 相比于一条分类规则确定业务报文完整的转发路径 而言, 每条分类规则只需判断业务报文的部分报文特征, 每个业务报文可 以对应多条分类规则, 相比于每一业务报文只能对应一条分类规则, 不需 要在分类规则中对报文特征可能的目标值的所有的排列组合进行设置, 大 大减少了分类规则数量, 对应减少了转发规则及控制信令的数量, 节省了 存储资源和控制信令通道资源。
图 13 为本发明另一实施例提供的业务报文转发方法流程图。 本发明 实施例提供的业务报文转发方法具体歩骤如下:
歩骤 S701、所述转发器接收所述分类器发送的第四业务报文, 所述第 四业务报文包括回传业务报文以及第二业务链信息, 所述第二业务链信息 用于指示第二业务链的路由, 所述第四业务报文是所述分类器根据第一业 务链信息以及所述回传业务报文的报文特征生成的报文, 所述第一业务链 信息用于指示第一业务链的路由, 所述第一业务链信息以及所述回传业务 报文是所述分类器接收的第三业务报文中携带的信息;
本发明实施例中的分类器接收到转发器返回的第三业务报文, 所述第 三业务报文包括回传业务报文及第一业务链信息, 所述回传业务报文可以 是上述实施例中的第一业务报文, 也可以是经过功能实体处理过的第一业 务报文, 第一业务链信息用于指示分类器在接收到第三业务报文之前, 转 发所述回传业务报文的第一业务链的路由。
分类器依据所述第一业务链信息和所述回传业务报文的报文特征生 成第二业务链信息, 第二业务链信息替代第一业务链信息生成第四业务报 文, 或者将第二业务链信息添加在第三业务报文中形成第四业务报文, 所 述第二业务链信息用于指示转发所述第四业务报文的第二业务链的路由, 第二业务链的路由是转发器将所述第四业务报文至少发送给一个功能实 体的路径。
歩骤 S702、所述转发器根据所述第二业务链信息转发所述第四业务报 文。
所述分类器将生成的所述第四业务报文发送给转发器, 以使转发器根 据所述第四业务报文中携带的第二业务链信息转发所述第四业务报文。
本发明实施例依据每个业务链信息指示一个业务链的路由, 通过多次 更改业务报文中携带的业务链信息, 由多次更改的业务链的路由构成转发 业务报文的完整路径, 相比于一条分类规则确定业务报文完整的转发路径 而言, 每条分类规则只需判断业务报文的部分报文特征, 每个业务报文可 以对应多条分类规则, 相比于每一业务报文只能对应一条分类规则, 不需 要在分类规则中对报文特征可能的目标值的所有的排列组合进行设置, 大 大减少了分类规则数量, 对应减少了转发规则及控制信令的数量, 节省了 存储资源和控制信令通道资源。
在上述实施例的基础上, 所述转发器根据所述第二业务链信息转发所 述第四业务报文包括: 所述转发器根据所述第二业务链信息转发所述第四 业务报文给所述分类器。
本发明实施例中的转发器可以根据所述第二业务链信息将所述第四 业务报文给所述分类器。
所述业务报文转发方还包括: 所述转发器确定第二转发规则; 所述转 发器根据所述第二业务链信息转发所述第四业务报文给所述分类器包括: 所述转发器根据所述第二转发规则以及所述第二业务链信息转发所述第 四业务报文给所述分类器。
所述第二业务链信息包括第二业务链标识, 所述第二业务链标识用于 标识所述第二业务链。
所述第二转发规则包括第二转发表项, 所述第二转发表项包括第四匹 配条件和所述分类器标识, 所述转发器根据所述第二转发规则以及所述第 二业务链信息转发所述第四业务报文给所述分类器包括:
所述转发器将所述第二业务链信息中的所述第二业务链标识与所述 第二转发表项的所述第四匹配条件进行匹配, 当二者一致时, 所述转发器 将所述第四业务报文发送到所述第二转发表项对应的所述分类器标识所 标识的所述分类器。
本发明实施例转发器对应的转发规则具体如下:
1、 Match (CID= =CIDal): SF1, SF2, 分类器标识;
2、 Match (CID= =CIDa2): SF1, 分类器标识;
3、 Match (CID= =CIDbl): SF3, SF4, 分类器标识;
4、 Match (CID= =CIDb2): SF4, SF5 ;
5、 Match (CID= =CIDc l): SF6, 分类器标识;
6、 Match (CID= =CIDc2): SF6, SF7;
若转发器接收到携带 CIDa2的第三业务报文, 则依据转发规则 2将第 三业务报文发送给 SF1 , 并将 SF1返回的第三业务报文发送给分类器; 若 转发器接收到携带 CIDbl的第三业务报文, 则依据转发规则 3将第三业务 报文依次发送给 SF3、 SF4处理, 并将 SF4返回的第三业务报文发送给分 类器, 以使分类器根据第三业务报文中携带的回转业务报文的报文特征以 及第三业务报文携带的 CIDbl与后续分类规则继续匹配, 若匹配到分类规 则 "源 IP==IP4&CIDB, CID=CIDc2 " , 则分类器将第三业务报文中的 CIDbl 替换为 CIDc2生成第四业务报文, 并将第四业务报文发送给转发器, 转发 器判断获知第四业务报文与 "Match (CID==CIDc2) : SF6 , SF7 " 匹配, 将 第四业务报文发送给 SF6、 SF7 处理, 由于该转发规则中不包括分类器标 识, 则转发器将 SF7返回的第四业务报文发送给外网设备。
在本发明实施例中,可以通过控制器将转发规则下发给转发器,另外, 转发器也可以通过预配置的方式或从其他配置网元获取转发规则, 转发规 则并不限定于上述举例中的形式, 而且转发规则之间还可以设定优先级, 对应的转发器可以依据转发规则的优先级转发所述第二业务报文。
本发明实施例依据每个业务链信息指示一个业务链的路由, 通过多次 更改业务报文中携带的业务链信息, 由多次更改的业务链的路由构成转发 业务报文的完整路径, 相比于一条分类规则确定业务报文完整的转发路径 而言, 每条分类规则只需判断业务报文的部分报文特征, 每个业务报文可 以对应多条分类规则, 相比于每一业务报文只能对应一条分类规则, 不需 要在分类规则中对报文特征可能的目标值的所有的排列组合进行设置, 大 大减少了分类规则数量, 对应减少了转发规则及控制信令的数量, 节省了 存储资源和控制信令通道资源。
图 14为本发明另一实施例提供的业务报文转发方法适用的信令图; 本发明实施例提供的业务报文转发方法具体歩骤如下:
歩骤 S301、 控制器向分类器下发分类规则;
歩骤 S302、 控制器向转发器下发转发规则;
本发明实施例中歩骤 S301、 S302的执行顺序不限定。
歩骤 S303、 分类器将业务报文与分类规则进行匹配;
分类器将业务报文的报文特征值与分类规则中的匹配条件匹配, 例如 目的 IP为 IP1、 源端口号为 80的视频流报文与本发明实施例中 2、 3、 4 三条分类规则匹配。
歩骤 S304、 分类器向转发器发送添加有多个对应关系的业务报文; 分类器将 2、 3、 4三条分类规则中的 CID1和 SI=2、 CID2和 SI=2, 以 及 CID3和 SI=1的对应关系添加在所述业务报文中, 并将业务报文发送给 转发器。
歩骤 S305、 转发器依据 CID1转发业务报文;
转发器依据 CID1获取与 CID1对应的转发规则, 判断获知所述业务报 文需经过 SF1和 SF2处理。 歩骤 S306、 转发器与 SF1之间转发业务报文;
转发器向 SF1发送业务报文, 以使 SF1对业务报文进行处理, 同时向 转发器返回处理后的业务报文。
歩骤 S307、 转发器与 SF2之间转发业务报文;
转发器切换到 SF2 , 向 SF2发送业务报文, 以使 SF2对业务报文进行 处理, 同时向转发器返回处理后的业务报文。
歩骤 S308、 转发器依据 CID2转发业务报文;
转发器确定下一个业务链标识是 CID2, CID2对应 SF4和 SF5。
歩骤 S309、 转发器与 SF4之间转发业务报文;
转发器向 SF4发送业务报文, 以使 SF4对业务报文进行处理, 同时向 转发器返回处理后的业务报文。
歩骤 S310、 转发器与 SF5之间转发业务报文;
转发器向 SF5发送业务报文, 以使 SF5对业务报文进行处理, 同时向 转发器返回处理后的业务报文。
歩骤 S311、 转发器依据 CID3转发业务报文;
转发器确定下一个业务链标识是 CID3, CID3对应 SF6。
歩骤 S312、 转发器与 SF6之间转发业务报文;
转发器向 SF6发送业务报文, 以使 SF6对业务报文进行处理, 同时向 转发器返回处理后的业务报文。
歩骤 S313、 转发器向外网设备发送业务报文。
转发器确定不存在下一个业务链标识时, 将业务报文发送给外网设 备。
本发明实施例通过在业务报文中添加多个业务链标识与业务索引的 对应关系, 便于转发器在转发业务报文时, 对多个业务链标识对应的转发 业务链进行切换。
图 15为本发明另一实施例提供的业务报文转发方法适用的信令图; 本发明实施例提供的业务报文转发方法具体歩骤如下:
歩骤 S401、 控制器向分类器下发分类规则;
歩骤 S402、 控制器向转发器下发转发规则;
本发明实施例中歩骤 S401、 S402的执行顺序不限定。 歩骤 S403、 分类器将业务报文与分类规则进行匹配;
目的 IP为 IP1、 源端口号为 80的视频流报文与本发明实施例中的三 条分类规则匹配。
歩骤 S404、分类器向转发器发送添加有多个业务链标识的部分比特的 业务报文;
分类器将三条分类规则中的业务链标识分别与对应的掩码相与后组 成第二业务链标识 CID , 将 CID添加在业务报文中, 并将业务报文发送给 转发器。
歩骤 S405、 转发器依据 CID&maska转发业务报文;
转发器获取与 CID&maska对应的转发规则, 判断获知所述业务报文需 经过 SF1和 SF2处理。
歩骤 S406、 转发器与 SF1之间转发业务报文;
歩骤 S407、 转发器与 SF2之间转发业务报文;
歩骤 S408、 转发器依据 CID&maskb转发业务报文;
转发器获取与 CID&maskb对应的转发规则, 判断获知所述业务报文需 经过 SF4和 SF5处理。
歩骤 S409、 转发器与 SF4之间转发业务报文;
歩骤 S410、 转发器与 SF5之间转发业务报文;
歩骤 S411、 转发器依据 CID&maskc转发业务报文;
转发器获取与 CID&maskc对应的转发规则, 判断获知所述业务报文需 经过 SF6处理。
歩骤 S412、 转发器与 SF6之间转发业务报文;
歩骤 S413、 转发器向外网设备发送业务报文。
转发器判断获知业务标签头中业务链标识的所有比特位均已清零后, 将业务报文发送给外网设备。
歩骤 S406、 S407、 S409、 S410、 S412分别于上述实施例中的歩骤 S306、 S307、 S309、 S310、 S312相同, 此处不再赘述。
本发明实施例通过在业务报文中添加多个业务链标识的部分比特, 节 省了业务标签头的存储空间。
图 16为本发明另一实施例提供的业务报文转发方法适用的信令图; 本发明实施例提供的业务报文转发方法具体歩骤如下:
歩骤 S501、 控制器向分类器下发分类规则;
歩骤 S502、 控制器向转发器 1下发转发规则;
歩骤 S503、 控制器向转发器 2下发转发规则;
本发明实施例中歩骤 S501、 S502、 S503的执行顺序不限定。
歩骤 S504、 分类器将业务报文与分类规则进行匹配;
例如目的 IP为 IP1、源端口号为 80的视频流报文与上述 2、 3两条分 类规则匹配。
歩骤 S505、 分类器向转发器发送添加有多个业务链标识的业务报文; 分类器将 CID1添加在业务报文的 CID#1域, 将 CID3添加在业务报文 的 CID#2域, 并将添加有 CID1和 CID3的业务报文发送给转发器。
歩骤 S506、 转发器 1依据 CID#1域转发业务报文;
转发器 1依据业务报文 CID#1域中的 CID1 , 获取与 CID1对应的转发 规则, 判断获知所述业务报文需经过 SF1和 SF2处理。
歩骤 S507、 转发器 1与 SF1之间转发业务报文;
歩骤 S508、 转发器 1与 SF2之间转发业务报文;
歩骤 S509、 转发器 1向转发器 2发送业务报文;
转发器 1基于业务报文的 CID#1域完成业务报文转发后, 将业务报文 发送给转发器 2。
歩骤 S510、 转发器 2依据 CID#2域转发业务报文;
转发器 2依据业务报文 CID#2域中的 CID3 , 获取与 CID3对应的转发 规则, 判断获知所述业务报文需经过 SF3和 SF4处理。
歩骤 S511、 转发器 2与 SF3之间转发业务报文;
歩骤 S512、 转发器 2与 SF4之间转发业务报文;
歩骤 S513、 转发器 2向外网设备发送业务报文。
转发器 2判断获知业务报文中不存在业务链标识时, 将业务报文发送 给外网设备。
本发明实施例通过不同的转发器识别业务报文的不同业务链标识域, 由不同的转发器对业务报文进行分段转发, 提供了业务报文的转发效率。
图 17为本发明另一实施例提供的业务报文转发方法适用的信令图; 本发明实施例所述的业务报文是源 IP为 IP4、 目的 IP为 IP1、 源端口号 为 80的视频流报文, 业务报文转发方法具体歩骤如下:
歩骤 S901、 控制器向分类器下发分类规则;
歩骤 S902、 控制器向转发器下发转发规则;
本发明实施例中歩骤 S901、 S902的执行顺序不限定。
歩骤 S903、 分类器将业务报文与第一类分类规则进行匹配; 若分类器接收到的业务报文不携带业务链标识, 则与第一类分类规则 进行匹配, 匹配到分类规则 "源端口号 ==80, CID=CIDa2 " 。
歩骤 S904、 分类器向转发器发送携带有 CIDa2的业务报文; 分类器将 CIDa2设置为业务报文的业务链标识, 并将业务报文发送给 转发器。
歩骤 S905、 转发器获取与 CIDa2匹配的转发规则;
转发器将业务报文与转发规则进行匹配, 判断获知所述业务报文需要 转发到 SF1和分类器。
歩骤 S906、 转发器与 SF1之间转发业务报文;
歩骤 S907、 转发器向分类器转发业务报文;
歩骤 S908、 分类器将业务报文与第二类分类规则进行匹配; 若分类器接收到的业务报文携带有业务链标识, 则与第二类分类规则 进行匹配, 匹配到分类规则 "目的 IP==IP1&CIDA, CID=CIDbl,, 。
歩骤 S909、 分类器向转发器发送携带有 CIDb l的业务报文; 分类器将业务报文的 CIDa2替换为 CIDbl , 并发送给转发器。
歩骤 S910、 转发器获取与 CIDbl匹配的转发规则;
转发器将业务报文与转发规则进行匹配, 判断获知所述业务报文需要 转发到 SF3、 SF4和分类器。
歩骤 S911、 转发器与 SF3之间转发业务报文;
歩骤 S912、 转发器与 SF4之间转发业务报文;
歩骤 S913、 转发器向分类器发送业务报文;
歩骤 S914、 分类器将业务报文与第二类分类规则进行匹配; 若分类器接收到的业务报文携带有业务链标识, 则与第二类分类规则 进行匹配, 匹配到分类规则 "源 IP==IP4&CIDB,CID=CIDc2 " 。
歩骤 S915、 分类器向转发器发送携带有 CIDc2的业务报文; 分类器将业务报文的 CIDb l替换为 CIDc2, 并发送给转发器。
歩骤 S916、 转发器获取与 CIDc2匹配的转发规则;
转发器将业务报文与转发规则进行匹配, 判断获知所述业务报文需要 转发到 SF6、 SF7。
歩骤 S917、 转发器与 SF6之间转发业务报文;
歩骤 S918、 转发器与 SF7之间转发业务报文;
歩骤 S919、 转发器向外网设备发送业务报文。
由于与 CIDc2匹配的转发规则不包括分类器, 转发器将 SF7返回的业 务报文发送给外网设备。
本发明实施例中分类规则的一个匹配条件只判断业务报文的一个报 文特征或几个报文特征, 不需判断业务报文的所有报文特征, 减少了分类 规则表项, 对应减少了转发规则的表项, 节省了存储资源。
综上所述, 本发明实施例依据每个业务链信息指示一个业务链的路 由, 通过在业务报文中携带多个业务链信息, 由多个业务链的路由构成转 发业务报文的完整路径, 或者通过多次更改业务报文中携带的业务链信 息, 由多次更改的业务链的路由构成转发业务报文的完整路径, 相比于一 条分类规则确定业务报文完整的转发路径而言, 每条分类规则只需判断业 务报文的部分报文特征, 每个业务报文可以对应多条分类规则, 相比于每 一业务报文只能对应一条分类规则, 不需要在分类规则中对报文特征可能 的目标值的所有的排列组合进行设置, 大大减少了分类规则数量, 对应减 少了转发规则及控制信令的数量, 节省了存储资源和控制信令通道资源。
在本发明所提供的几个实施例中,应该理解到,所揭露的装置和方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示意性 的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可以 有另外的划分方式, 例如多个单元或组件可以结合或者可以集成到另一个 系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论的相互之 间的耦合或直接耦合或通信连接可以是通过一些接口, 装置或单元的间接 耦合或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的, 作为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地 方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的 部分或者全部单元来实现本实施例方案的目的。
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在 —个单元中。 上述集成的单元既可以采用硬件的形式实现, 也可以采用硬 件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元, 可以存储在一个计算 机可读取存储介质中。 上述软件功能单元存储在一个存储介质中, 包括若 干指令用以使得一台计算机设备 (可以是个人计算机, 服务器, 或者网络 设备等) 或处理器 (processor ) 执行本发明各个实施例所述方法的部分 歩骤。 而前述的存储介质包括: U盘、 移动硬盘、 只读存储器(Read-Only Memory , ROM ) 、 随机存取存储器 ( Random Access Memory , RAM ) 、 磁碟 或者光盘等各种可以存储程序代码的介质。
本领域技术人员可以清楚地了解到, 为描述的方便和简洁, 仅以上述 各功能模块的划分进行举例说明, 实际应用中, 可以根据需要而将上述功 能分配由不同的功能模块完成, 即将装置的内部结构划分成不同的功能模 块, 以完成以上描述的全部或者部分功能。 上述描述的装置的具体工作过 程, 可以参考前述方法实施例中的对应过程, 在此不再赘述。
最后应说明的是: 以上各实施例仅用以说明本发明的技术方案, 而非 对其限制; 尽管参照前述各实施例对本发明进行了详细的说明, 本领域的 普通技术人员应当理解: 其依然可以对前述各实施例所记载的技术方案进 行修改, 或者对其中部分或者全部技术特征进行等同替换; 而这些修改或 者替换, 并不使相应技术方案的本质脱离本发明各实施例技术方案的范 围。

Claims

权 利 要 求 书
1、 一种分类器, 其特征在于, 包括:
第一接收模块, 用于接收第一业务报文, 所述第一业务报文包括报文 特征;
第一处理模块, 用于根据所述报文特征生成第二业务报文, 所述第二 业务报文包括所述第一业务报文以及至少两个业务链信息, 每个业务链信 息用于指示一个业务链的路由;
第一发送模块, 用于将所述第二业务报文发送给转发器, 以使所述转 发器根据所述至少两个业务链信息转发所述第二业务报文。
2、 根据权利要求 1 所述的分类器, 其特征在于, 所述第一处理模块 进一歩用于根据一个或者至少两个所述报文特征确定所述至少两个业务 链信息。
3、 根据权利要求 2所述的分类器, 其特征在于, 所述业务链信息包 括业务链标识, 所述业务链标识用于标识所述业务链。
4、 根据权利要求 2所述的分类器, 其特征在于, 所述业务链信息包 括业务链标识和业务链切换信息, 所述业务链切换信息用于指示所述业务 链之间的切换。
5、 根据权利要求 4所述的分类器, 其特征在于, 所述业务链切换信 息包括业务索引, 所述业务索引用于标识所述转发器对应的功能实体的个 数。
6、 根据权利要求 3所述的分类器, 其特征在于, 所述业务链标识由 业务链标识域的子字段表示, 所述业务链标识域包含在第二业务报文中。
7、 根据权利要求 1-6任一项所述的分类器, 其特征在于,
所述第一处理模块, 还用于确定第一分类规则;
还用于将所述报文特征和所述第一分类规则进行匹配, 生成所述第二 业务报文。
8、 根据权利要求 7所述的分类器, 其特征在于, 所述第一分类规则 包括第一分类表项, 所述第一分类表项包括第一匹配条件和所述业务链信 息;
所述第一处理模块进一歩用于将所述报文特征和所述第一分类表项 对应的第一匹配条件进行匹配;
所述第一处理模块进一歩用于当所述报文特征和所述第一分类表项 对应的第一匹配条件一致时, 将所述第一分类表项对应的所述业务链信息 添加在所述第一业务报文中, 生成所述第二业务报文。
9、 一种转发器, 其特征在于, 包括:
第二接收模块, 用于接收分类器发送的第二业务报文, 所述第二业务 报文包括第一业务报文以及至少两个业务链信息, 每个业务链信息用于指 示一个业务链的路由, 所述第一业务报文是所述分类器接收到的报文, 所 述第一业务报文包括报文特征;
第二发送模块, 用于根据所述至少两个业务链信息转发所述第二业务 报文。
10、 根据权利要求 9所述的转发器, 其特征在于, 所述第二发送模块 进一歩用于根据所述至少两个业务链信息转发所述第二业务报文给至少 一个功能实体。
11、 根据权利要求 10所述的转发器, 其特征在于, 还包括: 第二处理模块, 用于确定第一转发规则;
所述第二发送模块进一歩用于根据所述第一转发规则以及所述至少 两个业务链信息转发所述第二业务报文给所述至少一个功能实体。
12、 根据权利要求 11 所述的转发器, 其特征在于, 所述业务链信息 包括业务链标识, 所述业务链标识用于标识所述业务链。
13、 根据权利要求 12所述的转发器, 其特征在于, 所述业务链信息 包括业务链标识和业务链切换信息, 所述业务链切换信息用于指示所述业 务链之间的切换。
14、 根据权利要求 13所述的转发器, 其特征在于, 所述至少两个业 务链信息至少包括第三业务链信息和第四业务链信息;
所述第二发送模块进一歩用于根据所述第三业务链信息转发所述第 二业务报文给所述至少一个功能实体中的一个;
所述第二接收模块进一歩用于接收所述至少一个功能实体中的一个 处理后的所述第二业务报文;
所述第二处理模块进一歩用于根据所述业务链切换信息, 确定所述第 四业务链信息;
所述第二发送模块还用于根据所述第四业务链信息继续转发所述第 二业务报文。
15、 根据权利要求 14所述的转发器, 其特征在于, 所述业务链切换 信息包括业务索引, 所述业务索引用于标识所述转发器对应的功能实体的 个数, 且所述转发器转发所述第二业务报文给所述功能实体之后, 所述业 务索引被减一。
16、 根据权利要求 15所述的转发器, 其特征在于, 所述第一转发规 则包括第一转发表项, 所述第一转发表项包括第三匹配条件和功能实体标 识;
所述第二处理模块, 还用于将所述第二业务报文的所述业务链标识与 所述第一转发表项的第三匹配条件进行匹配;
所述第二发送模块进一歩用于当所述第二业务报文的所述业务链标 识与所述第一转发表项的第三匹配条件匹配时, 将所述第二业务报文发送 到所述第一转发表项对应的功能实体标识所标识的功能实体。
17、 根据权利要求 16所述的转发器, 其特征在于, 所述第二处理模 块, 还用于若所述第二业务报文中所有所述业务索引都减到 0, 删除所有 所述业务链信息;
所述第二发送模块进一歩用于发送删除所有所述业务链信息后的第 二业务报文。
18、 根据权利要求 17所述的转发器, 其特征在于, 所述第一转发规 则中的第三匹配条件包括第一业务链标识域;
所述第二处理模块进一歩用于将所述第二业务报文的所述业务链标 识对应的业务链标识域的子字段与所述第三匹配条件中的所述第一业务 链标识域的子字段进行匹配。
19、 一种分类器, 其特征在于, 包括:
第三接收模块, 用于接收第三业务报文, 所述第三业务报文包括回传 业务报文及第一业务链信息, 所述第一业务链信息用于指示第一业务链的 路由;
第三处理模块, 用于根据所述第一业务链信息以及所述回传业务报文 的报文特征, 生成第四业务报文, 所述第四业务报文包括所述回传业务报 文以及第二业务链信息, 所述第二业务链信息用于指示第二业务链的路 由;
第三发送模块, 用于将所述第四业务报文发送给转发器, 以使所述转 发器根据所述第二业务链信息转发所述第四业务报文。
20、 根据权利要求 19所述的分类器, 其特征在于, 所述第三处理模 块进一歩用于根据所述第一业务链信息以及所述回传业务报文的一个或 者至少两个所述报文特征确定所述第二业务链信息。
21、 根据权利要求 20所述的分类器, 其特征在于, 所述第一业务链 信息包括第一业务链标识, 所述第一业务链标识用于标识所述第一业务 链, 所述第二业务链信息包括第二业务链标识, 所述第二业务链标识用于 标识所述第二业务链。
22、 根据权利要求 21 所述的分类器, 其特征在于, 所述第一业务链 信息包括第一业务链标识和第一业务链切换信息, 所述第一业务链切换信 息用于指示所述第一业务链之间的切换, 所述第二业务链信息包括第二业 务链标识和第二业务链切换信息, 所述第二业务链切换信息用于指示所述 第二业务链之间的切换。
23、 根据权利要求 22所述的分类器, 其特征在于, 所述第一业务链 切换信息包括第一业务索引, 所述第一业务索引用于标识所述转发器对应 所述第一业务链的功能实体的个数, 所述第二业务链切换信息包括第二业 务索引, 所述第二业务索引用于标识所述转发器对应所述第二业务链的功 能实体的个数。
24、 根据权利要求 23所述的分类器, 其特征在于, 所述第一业务链 标识由第一业务链标识域的子字段表示, 所述第一业务链标识域包含在所 述第三业务报文中, 所述第二业务链标识由第二业务链标识域的子字段表 示, 所述第二业务链标识域包含在所述第四业务报文中。
25、 根据权利要求 19-24任一项所述的分类器, 其特征在于, 所述第三处理模块, 还用于确定第二分类规则;
还用于将所述第一业务链信息以及所述回传业务报文的报文特征分 别与所述第二分类规则进行匹配, 生成第四业务报文。
26、 根据权利要求 25所述的分类器, 其特征在于, 所述第二分类规 则包括第二分类表项, 所述第二分类表项包括第二匹配条件和第二业务链
I Ή自、 .,
所述第三处理模块进一歩用于将所述第一业务链信息与所述第二分 类表项对应的第二匹配条件进行匹配, 且将所述回传业务报文的报文特征 与所述第二分类表项对应的第二匹配条件进行匹配;
所述第三处理模块, 进一歩用于当所述第一业务链信息与所述第二匹 配条件一致且所述回传业务报文的报文特征与所述第二匹配条件一致时, 将所述第二分类表项对应的所述第二业务链信息替换为所述第一业务链 信息添加在所述第三业务报文中, 生成所述第四业务报文。
27、 根据权利要求 26所述的分类器, 其特征在于, 所述第二分类规 则中的第二匹配条件包括第一业务链标识的一部分;
所述第三处理模块进一歩用于将所述第一业务链信息的一部分与所 述第二匹配条件中的所述第一业务链标识的一部分进行匹配。
28、 一种转发器, 其特征在于, 包括:
第四接收模块, 用于接收所述分类器发送的第四业务报文, 所述第四 业务报文包括回传业务报文以及第二业务链信息, 所述第二业务链信息用 于指示第二业务链的路由, 所述第四业务报文是所述分类器根据第一业务 链信息以及所述回传业务报文的报文特征生成的报文, 所述第一业务链信 息用于指示第一业务链的路由, 所述第一业务链信息以及所述回传业务报 文是所述分类器接收的第三业务报文中携带的信息;
第四发送模块, 用于根据所述第二业务链信息转发所述第四业务报 文。
29、 根据权利要求 28所述的转发器, 其特征在于, 所述第四发送模 块进一歩用于根据所述第二业务链信息转发所述第四业务报文给所述分 类器。
30、 根据权利要求 29所述的转发器, 其特征在于, 还包括: 第四处理模块, 用于确定第二转发规则;
所述第四发送模块进一歩用于根据所述第二转发规则以及所述第二 业务链信息转发所述第四业务报文给所述分类器。
31、 根据权利要求 30所述的转发器, 其特征在于, 所述第二业务链 信息包括第二业务链标识, 所述第二业务链标识用于标识所述第二业务 链。
32、 根据权利要求 31 所述的转发器, 其特征在于, 所述第二转发规 则包括第二转发表项, 所述第二转发表项包括第四匹配条件和所述分类器 标识;
所述第四处理模块, 还用于将所述第二业务链信息中的所述第二业务 链标识与所述第二转发表项的所述第四匹配条件进行匹配;
所述第四发送模块进一歩用于当所述第二业务链标识与所述第二转 发表项的所述第四匹配条件一致时, 将所述第四业务报文发送到所述第二 转发表项对应的所述分类器标识所标识的所述分类器。
33、 一种业务报文转发系统, 其特征在于, 包括如权利要求 1-8任一 项所述的分类器, 和 /或如权利要求 9- 18任一项所述的转发器。
34、 一种业务报文转发系统, 其特征在于, 包括如权利要求 19-27任 一项所述的分类器, 和 /或如权利要求 28-32任一项所述的转发器。
35、 一种业务报文转发方法, 所述业务报文通过分类器、 转发器和功 能实体传输, 其特征在于, 所述方法包括:
分类器接收第一业务报文, 所述第一业务报文包括报文特征; 所述分类器根据所述报文特征生成第二业务报文, 所述第二业务报文 包括所述第一业务报文以及至少两个业务链信息, 每个业务链信息用于指 示一个业务链的路由;
所述分类器将所述第二业务报文发送给转发器, 以使所述转发器根据 所述至少两个业务链信息转发所述第二业务报文。
36、 根据权利要求 35所述的方法, 其特征在于, 所述分类器根据一 个或者至少两个所述报文特征确定所述至少两个业务链信息。
37、 根据权利要求 36所述的方法, 其特征在于, 所述业务链信息包 括业务链标识, 所述业务链标识用于标识所述业务链。
38、 根据权利要求 36所述的方法, 其特征在于, 所述业务链信息包 括业务链标识和业务链切换信息, 所述业务链切换信息用于指示所述业务 链之间的切换。
39、 根据权利要求 38所述的方法, 其特征在于, 所述业务链切换信 息包括业务索引, 所述业务索引用于标识所述转发器对应的功能实体的个 数。
40、 根据权利要求 37所述的方法, 其特征在于, 所述业务链标识由 业务链标识域的子字段表示, 所述业务链标识域包含在第二业务报文中。
41、 根据权利要求 35-40任一项所述的方法, 其特征在于, 还包括: 所述分类器确定第一分类规则; 所述分类器根据所述报文特征生成第 二业务报文包括:
所述分类器将所述报文特征和所述第一分类规则进行匹配, 生成所述 第二业务报文。
42、 根据权利要求 41 所述的方法, 其特征在于, 所述第一分类规则 包括第一分类表项, 所述第一分类表项包括第一匹配条件和所述业务链信 息, 所述分类器将所述报文特征和所述第一分类规则进行匹配, 生成所述 第二业务报文包括:
所述分类器将所述报文特征和所述第一分类表项对应的第一匹配条 件进行匹配, 当二者一致时, 所述分类器将所述第一分类表项对应的所述 业务链信息添加在所述第一业务报文中, 生成所述第二业务报文。
43、 一种业务报文转发方法, 所述业务报文通过分类器、 转发器和功 能实体传输, 其特征在于, 所述方法包括:
转发器接收分类器发送的第二业务报文, 所述第二业务报文包括第一 业务报文以及至少两个业务链信息, 每个业务链信息用于指示一个业务链 的路由, 所述第一业务报文是所述分类器接收到的报文, 所述第一业务报 文包括报文特征;
所述转发器根据所述至少两个业务链信息转发所述第二业务报文。
44、 根据权利要求 43所述的方法, 其特征在于, 所述转发器根据所 述至少两个业务链信息转发所述第二业务报文包括:
所述转发器根据所述至少两个业务链信息转发所述第二业务报文给 至少一个功能实体。
45、 根据权利要求 44所述的方法, 其特征在于, 还包括:
所述转发器确定第一转发规则; 所述转发器根据所述至少两个业务链信息转发所述第二业务报文给 所述至少一个功能实体包括:
所述转发器根据所述第一转发规则以及所述至少两个业务链信息转 发所述第二业务报文给所述至少一个功能实体。
46、 根据权利要求 45所述的方法, 其特征在于, 所述业务链信息包 括业务链标识, 所述业务链标识用于标识所述业务链。
47、 根据权利要求 46所述的方法, 其特征在于, 所述业务链信息包 括业务链标识和业务链切换信息, 所述业务链切换信息用于指示所述业务 链之间的切换。
48、 根据权利要求 47所述的方法, 其特征在于, 所述至少两个业务 链信息至少包括第三业务链信息和第四业务链信息, 所述转发器根据所述 至少两个业务链信息转发所述第二业务报文包括:
所述转发器根据所述第三业务链信息转发所述第二业务报文给所述 至少一个功能实体中的一个;
所述转发器接收所述至少一个功能实体中的一个处理后的所述第二 业务报文, 根据所述业务链切换信息, 确定所述第四业务链信息, 并根据 所述第四业务链信息继续转发所述第二业务报文。
49、 根据权利要求 48所述的方法, 其特征在于, 所述业务链切换信 息包括业务索引, 所述业务索引用于标识所述转发器对应的功能实体的个 数, 且所述转发器转发所述第二业务报文给所述功能实体之后, 所述业务 索引被减一。
50、 根据权利要求 49所述的方法, 其特征在于, 所述第一转发规则 包括第一转发表项, 所述第一转发表项包括第三匹配条件和功能实体标 识, 所述方法还包括:
所述转发器将所述第二业务报文的所述业务链标识与所述第一转发 表项的第三匹配条件进行匹配, 当二者一致时, 所述转发器将所述第二业 务报文发送到所述第一转发表项对应的功能实体标识所标识的功能实体。
51、 根据权利要求 50所述的方法, 其特征在于, 所述方法还包括: 若所述第二业务报文中所有所述业务索引都减到 0, 所述转发器删除 所有所述业务链信息, 并发送删除所有所述业务链信息后的第二业务报 文。
52、 根据权利要求 51 所述的方法, 其特征在于, 所述第一转发规则 中的第三匹配条件包括第一业务链标识域; 所述转发器将所述第二业务报 文的所述业务链标识与所述第一转发表项的第三匹配条件进行匹配包括: 所述转发器将所述第二业务报文的所述业务链标识对应的业务链标 识域的子字段与所述第三匹配条件中的所述第一业务链标识域的子字段 进行匹配。
53、 一种业务报文转发方法, 所述业务报文通过分类器、 转发器和功 能实体传输, 其特征在于, 所述方法包括:
所述分类器接收第三业务报文, 所述第三业务报文包括回传业务报文 及第一业务链信息, 所述第一业务链信息用于指示第一业务链的路由; 所述分类器根据所述第一业务链信息以及所述回传业务报文的报文 特征, 生成第四业务报文, 所述第四业务报文包括所述回传业务报文以及 第二业务链信息, 所述第二业务链信息用于指示第二业务链的路由;
所述分类器将所述第四业务报文发送给转发器, 以使所述转发器根据 所述第二业务链信息转发所述第四业务报文。
54、 根据权利要求 53所述的方法, 其特征在于, 所述分类器根据所 述第一业务链信息以及所述回传业务报文的一个或者至少两个所述报文 特征确定所述第二业务链信息。
55、 根据权利要求 54所述的方法, 其特征在于, 所述第一业务链信 息包括第一业务链标识, 所述第一业务链标识用于标识所述第一业务链, 所述第二业务链信息包括第二业务链标识, 所述第二业务链标识用于标识 所述第二业务链。
56、 根据权利要求 55所述的方法, 其特征在于, 所述第一业务链信 息包括第一业务链标识和第一业务链切换信息, 所述第一业务链切换信息 用于指示所述第一业务链之间的切换, 所述第二业务链信息包括第二业务 链标识和第二业务链切换信息, 所述第二业务链切换信息用于指示所述第 二业务链之间的切换。
57、 根据权利要求 56所述的方法, 其特征在于, 所述第一业务链切 换信息包括第一业务索引, 所述第一业务索引用于标识所述转发器对应所 述第一业务链的功能实体的个数, 所述第二业务链切换信息包括第二业务 索引, 所述第二业务索引用于标识所述转发器对应所述第二业务链的功能 实体的个数。
58、 根据权利要求 57所述的方法, 其特征在于, 所述第一业务链标 识由第一业务链标识域的子字段表示, 所述第一业务链标识域包含在所述 第三业务报文中, 所述第二业务链标识由第二业务链标识域的子字段表 示, 所述第二业务链标识域包含在所述第四业务报文中。
59、 根据权利要求 53-58任一项所述的方法, 其特征在于, 还包括: 所述分类器确定第二分类规则;
所述分类器根据所述第一业务链信息以及所述回传业务报文的报文 特征, 生成第四业务报文包括:
所述分类器将所述第一业务链信息以及所述回传业务报文的报文特 征分别与所述第二分类规则进行匹配, 生成第四业务报文。
60、 根据权利要求 59所述的方法, 其特征在于, 所述第二分类规则 包括第二分类表项, 所述第二分类表项包括第二匹配条件和第二业务链信 息;
所述分类器将所述第一业务链信息以及所述回传业务报文的报文特 征分别与所述第二分类规则进行匹配, 生成第四业务报文包括:
所述分类器将所述第一业务链信息与所述第二分类表项对应的第二 匹配条件进行匹配, 且将所述回传业务报文的报文特征与所述第二分类表 项对应的第二匹配条件进行匹配, 当所述第一业务链信息与所述第二匹配 条件一致且所述回传业务报文的报文特征与所述第二匹配条件一致时, 所 述分类器将所述第二分类表项对应的所述第二业务链信息替换为所述第 一业务链信息添加在所述第三业务报文中, 生成所述第四业务报文。
61、 根据权利要求 60所述的方法, 其特征在于, 所述第二分类规则 中的第二匹配条件包括第一业务链标识的一部分; 所述分类器将所述第一 业务链信息与所述第二分类表项对应的第二匹配条件进行匹配包括:
所述分类器将所述第一业务链信息的一部分与所述第二匹配条件中 的所述第一业务链标识的一部分进行匹配。
62、 一种业务报文转发方法, 所述业务报文通过分类器、 转发器和功 能实体传输, 其特征在于, 所述方法包括:
所述转发器接收所述分类器发送的第四
包括回传业务报文以及第二业务链信息, 所述第二业务链信息用于指小: - 二业务链的路由, 所述第四业务报文是所述分类器根据第一业务链信息以 及所述回传业务报文的报文特征生成的报文, 所述第一业务链信息用于指 示第一业务链的路由, 所述第一业务链信息以及所述回传业务报文是所述 分类器接收的第三业务报文中携带的信息;
所述转发器根据所述第二业务链信息转发所述第四业务报文。
63、 根据权利要求 62所述的方法, 其特征在于, 所述转发器根据所 述第二业务链信息转发所述第四业务报文包括:
所述转发器根据所述第二业务链信息转发所述第四业务报文给所述 分类器。
64、 根据权利要求 63所述的方法, 其特征在于, 还包括:
所述转发器确定第二转发规则;
所述转发器根据所述第二业务链信息转发所述第四业务报文给所述 分类器包括:
所述转发器根据所述第二转发规则以及所述第二业务链信息转发所 述第四业务报文给所述分类器。
65、 根据权利要求 64所述的方法, 其特征在于, 所述第二业务链信 息包括第二业务链标识, 所述第二业务链标识用于标识所述第二业务链。
66、 根据权利要求 65所述的方法, 其特征在于, 所述第二转发规则 包括第二转发表项, 所述第二转发表项包括第四匹配条件和所述分类器标 识, 所述转发器根据所述第二转发规则以及所述第二业务链信息转发所述 第四业务报文给所述分类器包括:
所述转发器将所述第二业务链信息中的所述第二业务链标识与所述 第二转发表项的所述第四匹配条件进行匹配, 当二者一致时, 所述转发器 将所述第四业务报文发送到所述第二转发表项对应的所述分类器标识所 标识的所述分类器。
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