CN104838622A - Method and device for forwarding packet in data-over-cable service interface specification system - Google Patents

Method and device for forwarding packet in data-over-cable service interface specification system Download PDF

Info

Publication number
CN104838622A
CN104838622A CN201380002336.5A CN201380002336A CN104838622A CN 104838622 A CN104838622 A CN 104838622A CN 201380002336 A CN201380002336 A CN 201380002336A CN 104838622 A CN104838622 A CN 104838622A
Authority
CN
China
Prior art keywords
vpn
upstream
downstream
marks
way services
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201380002336.5A
Other languages
Chinese (zh)
Inventor
徐进
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
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 Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of CN104838622A publication Critical patent/CN104838622A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2801—Broadband local area networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling

Abstract

The invention provides a method and a device for forwarding a packet in a data-over-cable service interface specification system. The method comprises: downloading a configuration file corresponding to a file name from a TFTP server corresponding to an address of the TFTP server, the configuration file carrying an uplink stream parameter, a downlink stream parameter and a virtual private network (VPN) identifier; according to the uplink stream parameter, the downlink stream parameter and the VPN identifier, establishing a bidirectional service stream carrying the VPN identifier; and receiving, from a CM, a DOCSIC protocol-based data packet, adding a virtual local area network (VLAN) identifier corresponding to the VPN identifier into the data packet, and encapsulating the data packet in which the VLAN identifier is added into an Ethernet packet and then forwarding same to a network side via the bidirectional service stream, so that VPN identifier supporting is conducted in the bidirectional service stream according to the VPN identifier of a DOCSIS unidirectional service stream.

Description

Method and device for forwarding packet in data-over-cable service interface specification system
Message forwarding method and engineering device technique field in a kind of cable bearing data service interface specification system
The present invention relates to communication technical field, message forwarding method and device in more particularly to a kind of cable bearing data service interface specification system.
Background technology
VPN（VPN, Virtual Private Network) refer to technology that dedicated network is set up in common network.Wherein, why for virtual network, it is primarily due to the connection between any two node of VPN and does not have a physical link end to end needed for conventional dedicated network, but the network platform that framework is provided in common network service provider, such as：Internet, frame relay（Frame Relay) etc. on logical network, user data transmits on logical links.Layer 2 virtual private network（The virtual private network of L2VPN, Layer 2) can on ip networks it is transparent transmission user Layer 2 data.
As shown in Figure 1 to include enterprise VPN network and multi-operator network diagram in the prior art, the core network part equipment of the two classes network includes：VPN core network devices and multisystem operator（MSO, Muti- System Operation) operator support system (OSS, Operation Supported System) equipment, access network equipment be distribution cable modulation /demodulation terminal system（D-CMTS, Distributed Cable Modem Termination System), user side equipment is cable modem termination（CM, Cable Modem), user side equipment can also include router（), or access point Router（AP, Access Point), wherein, cable bearing data service interface specification is supported between D-CMTS and CM（DOCSIS, Data-Over-Cable Service Interface Specifications ).
As shown in figure 1, mainly have 2 class data flows in the network diagram, a class user side and MSO
Data flow between OSS equipment（Cylinder claims " non-vpn service stream " or " common data stream "）, an also class is the data flow between user side and enterprise VPN core network device（Cylinder claims " VPN streams "）.For access network equipment D-CMTS equipment, if data flow is needed by D-CMTS uplink, D-CMTS for from CM based on DOCSIC agreements unidirectional flow data (including：Non- vpn service stream or common data stream）Transform into the two-way flow data for meeting Ethernet protocol, in the process, although non-vpn service stream is added mark VLAN222 by existing D-CMTS equipment, and VPN streams are added mark VLAN567 by D-CMTS equipment, but be all based on unidirectionally flowing the mark carried in parameter in configuration file, the mark can not be expanded to from the one-way traffic flow for meeting DOCSIS standards, support two-way services stream in ether IPization network.It is to be understood that in the prior art, the association that two class data flows are based on View is different, and the data that D-CMTS can not be transmitted the one-way traffic flow for meeting DOCSIS standards are sent in the upper layer network based on Ethernet protocol.
The content of the invention
It the embodiments of the invention provide message forwarding method and device in a kind of cable bearing data service interface specification system, can realize L2VPN marks from the one-way traffic flow for meeting DOCSIS standards, expand to two-way services stream in support ether IPization network.
First aspect there is provided message forwarding method in a kind of cable bearing data service interface specification system, including：
The configuration file of the CM is obtained after cable modem termination CM reaches the standard grade；The configuration file carries upstream parameters, downstream parameter and VPN VPN marks；
Identified to set up according to the upstream parameters, downstream parameter and the VPN and carry the two-way services stream that the VPN is identified；
Receive the data message based on DOCSIC agreements from the CM, the VPN is added in the data message and identifies corresponding virtual LAN VLAN mark, will be packaged into added with the data message that VLAN is identified after ether network packet and flow to network side forwarding by the two-way services.
In the first possible implementation, according in a first aspect, the two-way services stream for carrying the VPN marks according to the upstream parameters, downstream parameter and the VPN mark foundation is specifically included：
The quantity of upstream and the quantity of downstream are calculated according to the upstream parameters and downstream parameter, if the quantity of the upstream is more than the quantity of the downstream, and the VPN marks are carried in one or more in the upstream, then set up and the up quantity identical two-way services stream, wherein, two-way services stream corresponding with the upstream for carrying VPN carries the VPN marks.
In second of possible implementation, according in a first aspect, the two-way services stream for carrying the VPN marks according to the upstream parameters, downstream parameter and the VPN mark foundation is specifically included：
The quantity of upstream and the quantity of downstream are calculated according to the upstream parameters and downstream parameter, if the quantity of the upstream is more than the quantity of the downstream, and the VPN marks are carried in one or more in the downstream, then the VPN is copied on corresponding upstream, set up and the up quantity identical two-way services stream, wherein, it is corresponding two-way with the upstream for carrying VPN Business Stream carries the VPN marks.
In the third possible implementation, according in a first aspect, the two-way services stream for carrying the VPN marks according to the upstream parameters, downstream parameter and the VPN mark foundation is specifically included：
The quantity of upstream and the quantity of downstream are calculated according to the upstream parameters and downstream parameter, if the quantity of the downstream is more than the quantity of the upstream, and the VPN marks are carried in one or more in the downstream, then set up and the descending quantity identical two-way services stream, wherein, two-way services stream corresponding with the downstream for carrying VPN carries the VPN marks.
In the 4th kind of possible implementation, according in a first aspect, the two-way services stream for carrying the VPN marks according to the upstream parameters, downstream parameter and the VPN mark foundation is specifically included：
The quantity of upstream and the quantity of downstream are calculated according to the upstream parameters and downstream parameter, if the quantity of the downstream is more than the quantity of the upstream, and the VPN marks are carried in one or more in the upstream, then the VPN is copied in corresponding downstream, set up and the descending quantity identical two-way services stream, wherein, two-way services stream corresponding with the downstream for carrying VPN carries the VPN marks.
In the 5th kind of possible implementation, with reference to any one of first aspect or the first possible implementation to the 4th kind of possible implementation, the VPN is also carried in the configuration file and identifies corresponding VLAN marks, then the corresponding virtual LAN VLAN mark of the VPN marks is added in the data message and is specifically included：
The VPN marks corresponding virtual LAN VLAN mark is added in the data message with the VLAN corresponding relations identified according to the VPN marks locally preserved.
Second aspect there is provided a kind of distribution cable modulation /demodulation terminal system D-CMTS, including：First data collector, the configuration file for obtaining the CM after cable modem termination CM reaches the standard grade；The configuration file carries upstream parameters, downstream parameter and VPN VPN marks；
Processor, the two-way services stream that the VPN is identified is carried for identifying to set up according to the upstream parameters, downstream parameter and the VPN；
Second data collector, for receiving the datagram based on DOCSIC agreements from the CM Text, the VPN is added in the data message and identifies corresponding virtual LAN VLAN mark, will be packaged into added with the data text that VLAN is identified after ether online article and flow to network side forwarding by the two-way services.
In the first possible implementation, according to second aspect, the processor according to the upstream parameters and downstream parameter specifically for calculating the quantity of upstream and the quantity of downstream, if the quantity of the upstream is more than the quantity of the downstream, and the VPN marks are carried in one or more in the upstream, then set up and the up quantity identical two-way services stream, wherein, two-way services stream corresponding with the upstream for carrying VPN carries the VPN marks.
In second of possible implementation, according to second aspect, the processor according to the upstream parameters and downstream parameter specifically for calculating the quantity of upstream and the quantity of downstream, if the quantity of the upstream is more than the quantity of the downstream, and the VPN marks are carried in one or more in the downstream, then the VPN is copied on corresponding upstream, set up and the up quantity identical two-way services stream, wherein, two-way services stream corresponding with the upstream for carrying VPN carries the VPN marks.
In the third possible implementation, according to second aspect, the processor according to the upstream parameters and downstream parameter specifically for calculating the quantity of upstream and the quantity of downstream, if the quantity of the downstream is more than the quantity of the upstream, and the VPN marks are carried in one or more in the downstream, then set up and the descending quantity identical two-way services stream, wherein, two-way services stream corresponding with the downstream for carrying VPN carries the VPN marks.
In the 4th kind of possible implementation, according to second aspect, the processor according to the upstream parameters and downstream parameter specifically for calculating the quantity of upstream and the quantity of downstream, if the quantity of the downstream is more than the quantity of the upstream, and the VPN marks are carried in one or more in the upstream, then the VPN is copied on corresponding downstream, set up and the descending quantity identical two-way services stream, wherein, two-way services stream corresponding with the downstream for carrying VPN carries the VPN marks.
There is provided a kind of cable bearing data service interface specification system, including the D-CMTS described in above-mentioned any one for the third aspect.
In the first possible implementation, according to the third aspect, the system also includes cable modulatedemodulate Ask message, request distribution IP address.
The embodiment of the present invention provides the explanation of message forwarding method and device in a kind of cable bearing data service interface specification system, and the corresponding configuration file of filename is downloaded from the corresponding tftp server in the address of tftp server；Configuration file carries upstream parameters, downstream parameter and VPN VPN marks；Identified according to upstream parameters, downstream parameter and VPN and set up the two-way services stream for carrying VPN marks；Receive the data message based on DOCSIC agreements from CM, VPN is added in data message and identifies corresponding virtual LAN VLAN mark, it will be packaged into added with the data message that VLAN is identified after ether network packet and flow to network side forwarding by two-way services, coaxial line network and the conversion of the ether IPization network of support two-way services stream business of the DOCSIS standards of one-way traffic flow are supported, the normal forwarding of data flow is realized.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, cylinder will be made to the required accompanying drawing used in embodiment or description of the prior art below singly to introduce, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is to include enterprise VPN network and multi-operator network diagram in the prior art；Fig. 2 a are the cylinder list logical architectures of the processing to data flow in D-CMTS provided in an embodiment of the present invention；
Fig. 2 b are the forms of expression more refined of the cylinder list logical architecture of the processing to data flow in D-CMTS provided in an embodiment of the present invention；
Fig. 3 is the flow sketch drawing of message forwarding method in a kind of cable bearing data service interface specification system that the inventive method embodiment one is provided；
Fig. 4 is the flow sketch drawing of message forwarding method in a kind of cable bearing data service interface specification system that the inventive method embodiment two is provided；
Fig. 5 is that enumerate in embodiment two a kind of sets up bidirectional flow signal sketch drawing according to configuration file；Fig. 6 is that enumerate in embodiment two a kind of sets up bidirectional flow signal sketch drawing according to configuration file；Fig. 7 is a kind of D-CMTS signal sketch drawings that the inventive method embodiment three is provided.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
Two-way services stream described in the embodiment of the present invention is that same Business Stream supports data traffic from user side to network side, also supports the data traffic from network side to user side.
As shown in Figure 2 a and 2 b, it is the cylinder list logical architecture of processing in D-CMTS to data flow, the chip for supporting two-way services stream is included in D-CMTS（That is Ethernet forwarding chip in Fig. 2 a）The chip unidirectionally flowed with support（Meet DOCSIS chip in figure）, i.e. include the unidirectional stream chip for supporting DOCSIS standards and the two-way services stream chip for supporting Ethernet standard in D-CMTS.Therefore there is two-way services stream and the corresponding relation unidirectionally flowed, as shown in figure 2b, upstream and downstream data flow are by supporting two-way services stream chip to be divided into paired bidirectional traffic, that is two-way services stream 1 and two-way services stream 2, wherein, handled in two-way services stream 1 and come upstream 1 (SFID1 i.e. as shown in Figure 2 b) and downstream 1 (SFID3 i.e. as shown in Figure 2 b), handled in two-way services stream 2 and come upstream 2 (SFID2 i.e. as shown in Figure 2 b) and downstream 2 (SFID4 i.e. as shown in Figure 2 b).It will be appreciated that SFID is service flow identifier（That is SFID, Service Flow ID).
It is also to be appreciated that the 2 data streams that every two-way services stream includes are the divisions of the progress that puts in order in configuration file according to data flow, such as：First downstream data flow in first upstream, and configuration file of configuration file is divided in together, is used as a two-way services stream.Certainly, the embodiment of the present invention does not limit other two-way services stream splitting schemes, is only a kind of specific citing herein.
Simply support to realize to increasing L2VPN marks in two-way services stream in increase VPN marks, existing Docsis standards in unidirectional stream in the prior art.The embodiment of the present invention can solve the problem, and below in conjunction with specific embodiment, the scheme that the present invention is implemented is illustrated.
Embodiment one
The embodiment of the present invention provides message forwarding method in a kind of cable bearing data service interface specification system, and shown in Fig. 3, this method includes：
Step A1, CM configuration file is obtained when cable modem termination CM reaches the standard grade, and the configuration file carries upstream parameters, downstream parameter and VPN marks.
Wherein, the process that D-CMTS obtains CM configuration files can by D-CMTS obtain Internet Protocol in CM（Internet Protocol, IP) dynamic from network side is intercepted and captured during address matches somebody with somebody Put agreement (Dynamic Host Control Protocol, DHCP) ACK messages, the filename of the address of FTP (File Transfer Protocol, FTP) server and the configuration file of the CM is carried in the DHCP ACK messages.Corresponding configuration file.
Step A3, D-CMTS identify to set up according to the upstream parameters, downstream parameter and the VPN carries the two-way services stream that the VPN is identified.
Step A4, D-CMTS receives the data message based on DOCSIC agreements from the CM, the VPN is added in the data message and identifies corresponding virtual LAN VLAN mark, will be packaged into added with the data message that VLAN is identified after ether network packet and flow to network side forwarding by the two-way services.
It is to be appreciated that the bar number of upstream and downstream can be calculated from configuration file, judge that the number of upstream or downstream is more when setting up two-way services stream, the streams most according to number set up two-way services stream.Such as：Upstream 4, downstream 2, two-way services stream is just created according to the number of 4 upstreams.
Method provided in an embodiment of the present invention can be realized L2VPN marks from the one-way traffic flow for meeting DOCSIS standards, expand to two-way services stream in support ether IPization network.Coaxial line network and the conversion of the ether IPization network of support two-way services stream business of the DOCSIS standards of one-way traffic flow are supported, the normal forwarding of data flow is realized.
Embodiment two
The embodiment of the present invention provides message forwarding method in a kind of cable bearing data service interface specification system, as shown in figure 4, this method includes：
Step 101, the configuration file of the CM is obtained after CM reaches the standard grade；Configuration file carries upstream parameters, downstream parameter and VPN marks；
The process for obtaining configuration file can be that D-CMTS intercepting and capturing CM passes through DHCP acquisition IP address
DHCPACK messages, obtain ftp server address and the filename of configuration file of the configuration file of the CM from DHCP ACK messages, and the corresponding configuration file of filename is downloaded from corresponding ftp server.
Configuration file can also be sent to D-CMTS after ftp server download by CM. Step 103, two-way services stream is set up according to the upstream parameters, downstream parameter and VPN mark.
The two-way services stream that D-CMTS is set up can be connected on port connected with the CM between D-CMTS on and D-CMTS between the port of upper layer network.
The process that D-CMTS sets up two-way services stream according to upstream parameters, downstream parameter and VPN mark can be specifically as follows：
The quantity of upstream and the quantity of downstream are calculated using upstream parameters and downstream parameter.
(1) if the quantity of the downstream is more than the quantity of the upstream, and obtained from configuration file in one or more of the VPN marks carrying in the upstream, then the VPN is copied in corresponding downstream, set up and the descending quantity identical two-way services stream, wherein, two-way services stream corresponding with the downstream for carrying VPN marks carries the VPN and identified.
As shown in fig. 5, it is assumed that in the configuration file that D-CMTS is obtained from tftp server, recite needs to set up 3 upstreams, 4 downstreams, and includes VPN marks in the upstream in the 2nd article of CM configuration file（In such as figure upstream numbering be behind 2 "+" represent be configured with VPN mark）；Because the quantity of downstream is more than the quantity of upstream, therefore, D-CMTS will be set up and downstream quantity identical two-way services stream, go out 4 two-way services streams according to the upstream parameters in configuration file and downstream parameter configuration, because the up direction of the 3rd article and the 4th article two-way services stream does not have upstream parameters, therefore, the upstream parameters of the 3rd article and the 4th article two-way services stream can use default parameters.
When setting up two-way services stream with descending stream quantity, it is VPN Business Streams that can cause to have ignored Article 2 upstream, therefore, and the VPN marks in upstream are replicated in the configuration file of the 2nd article of downstream, then the 2nd article of two-way services stream is vpn service stream（I.e. the 2nd article downstream and the 2nd article of upstream are all established as vpn service stream）.
(2) if the quantity of the downstream is more than the quantity of the upstream, and the VPN marks are carried in one or more in the downstream, then set up and the descending quantity identical two-way services stream, wherein, two-way services stream corresponding with the downstream for carrying VPN carries the VPN marks.
Such as need to set up 4 downstreams for the CM in D-CMTS described in configuration file, 3 upstreams, and the 2nd article of downstream carries VPN marks, then D-CMTS configures 4 two-way services streams according to the quantity of downstream between D-CMTS user-side ports and network-side port, due to the 2nd article it is descending Stream carries VPN marks, then the 2nd article of two-way services stream set up carries VPN marks.
(3) if the quantity of the upstream is more than the quantity of the downstream, and the VPN marks are carried in one or more in the upstream, then set up and the upstream quantity identical two-way services stream, wherein, two-way services stream corresponding with the upstream for carrying VPN carries the VPN marks.
As shown in Figure 6, it is assumed that, it is necessary to set up 4 upstreams in the configuration file that D-CMTS is obtained from tftp server, and 3 downstreams, VPN marks and in the configuration file of the 2nd article of upstream are included（In such as figure upstream numbering be behind 2 "+" represent be configured with VPN mark）；Because the quantity of upstream is more than the quantity of downstream, therefore, D-CMTS configures 4 two-way services streams.
(4) if the quantity of the upstream is more than the quantity of the downstream, and the VPN marks are carried in one or more in the downstream, then set up and the up quantity identical two-way services stream, wherein, two-way services stream corresponding with the upstream for carrying VPN carries the VPN marks.
Step 104, receive the data message based on DOCSIC agreements from the CM, the VPN is added in the data message and identifies corresponding virtual LAN VLAN mark, will be packaged into added with the data message that VLAN is identified after ether network packet and flow to network side forwarding by the two-way services.
D-CMTS is received after the uplink data messages from CM from the two-way services stream for carrying VPN marks, and VPN marks are added in uplink data messages, the message that ethernet format is packaged into added with the data message that VPN is identified is sent into network side.
For downlink data message, D-CMTS is sent to CM after removing corresponding VPN marks.The method that the present embodiment is provided, which can be realized, identifies L2VPN from the one-way traffic flow for meeting DOCSIS standards, expands to two-way services stream in support ether IPization network.Coaxial line network and the conversion of the IPization network of the ether of support two-way services stream business of the DOCSIS standards of one-way traffic flow are supported, the normal forwarding of data flow is realized.
Embodiment three
The embodiments of the invention provide a kind of D-CMTS, structural representation as shown in fig. 7, comprises the first data collector 601, processor 601, the second data collector 603, wherein：
First data collector 601, for obtaining the corresponding configuration files of the CM after CM reaches the standard grade；The configuration file carries upstream parameters, downstream parameter and VPN VPN marks；Processor 602, for being identified according to the upstream parameters, downstream parameter and the VPN Set up the two-way services stream for carrying the VPN marks；
Second data collector 603, for receiving the data message based on DOCSIC agreements from the CM, the VPN is added in the data message and identifies corresponding virtual LAN VLAN mark, will be packaged into added with the data message that VLAN is identified after ether network packet and flow to network side forwarding by the two-way services.
The D-CMTS that the present embodiment is provided, it would be preferable to support the conversion of ether IPization network of the coaxial line network of the DOCSIS standards of one-way traffic flow with supporting two-way services stream business, realizes the normal forwarding of data flow.
It is used as a kind of embodiment, first data collector 601 can intercept and capture DHCP ACK just blunt texts during CM obtains from Dynamic Host Configuration Protocol server IP address by DHCP protocol, address and the filename of configuration file of CM ftp server are obtained from DHCP ACK messages, the corresponding configuration file of filename is downloaded from the corresponding ftp server in the address of ftp server.
First data collector 601 can also be obtained after CM obtains configuration file from CM.First data collector 601 can also otherwise obtain configuration file, herein no longer --- illustrate.
It is preferred that, the two-way services stream set up and carry the VPN marks is identified in the processor 602 according to the upstream parameters, downstream parameter and the VPN, is specifically included：
The quantity of upstream and the quantity of downstream are calculated according to the upstream parameters and downstream parameter, if the quantity of the upstream is more than the quantity of the downstream, and the VPN marks are carried in one or more in the upstream, then set up and the up quantity identical two-way services stream, wherein, two-way services stream corresponding with the upstream for carrying VPN carries the VPN marks.
It is preferred that, according to the upstream parameters, downstream parameter and described in the processor 602
VPN marks set up the two-way services stream for carrying the VPN marks, specifically include：
The quantity of upstream and the quantity of downstream are calculated according to the upstream parameters and downstream parameter, if the quantity of the upstream is more than the quantity of the downstream, and the VPN marks are carried in one or more in the downstream, then the VPN is copied on corresponding upstream, set up and the up quantity identical two-way services stream, wherein, two-way services stream corresponding with the upstream for carrying VPN carries the VPN marks.
It is preferred that, the two-way services stream set up and carry the VPN marks is identified in the processor 602 according to the upstream parameters, downstream parameter and the VPN, is specifically included：
The quantity of upstream and the quantity of downstream are calculated according to the upstream parameters and downstream parameter, such as The quantity of really described downstream is more than the quantity of the upstream, and the VPN marks are carried in one or more in the downstream, then set up and the descending quantity identical two-way services stream, wherein, two-way services stream corresponding with the downstream for carrying VPN carries the VPN marks.
It is preferred that, the two-way services stream set up and carry the VPN marks is identified in the processor 602 according to the upstream parameters, downstream parameter and the VPN, is specifically included：
The quantity of upstream and the quantity of downstream are calculated according to the upstream parameters and downstream parameter, if the quantity of the downstream is more than the quantity of the upstream, and the VPN marks are carried in one or more in the upstream, then the VPN is copied on corresponding downstream, set up and the descending quantity identical two-way services stream, wherein, two-way services stream corresponding with the downstream for carrying VPN carries the VPN marks.
Example IV
The embodiment of the present invention additionally provides a kind of cable bearing data service interface specification system, and the system can be the D-CMTS of above-described embodiment description.Do not repeat herein.
It is preferred that, the system can also include CM, and the CM is additionally operable to send DHCP request message, request distribution IP address to Dynamic Host Configuration Protocol server by the D-CMTS.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment can be by program to instruct the hardware of correlation to complete, the program can be stored in a computer-readable recording medium, and storage medium can include：ROM, RAM, disk or CD etc..
Message forwarding method and device in a kind of cable bearing data service interface specification system provided above the embodiment of the present invention, it is described in detail, specific case used herein is set forth to the principle and embodiment of the present invention, and the explanation of above example is only intended to help to understand method and its core concept of the invention；Simultaneously for those of ordinary skill in the art, according to the thought of the present invention, it will change in specific embodiments and applications, in summary, this specification content should not be construed as limiting the invention.

Claims (1)

  1. Claim
    1st, message forwarding method in a kind of cable bearing data service interface specification system, it is characterised in that including：
    The configuration file of the CM is obtained after cable modem termination CM reaches the standard grade；The configuration file carries upstream parameters, downstream parameter and VPN VPN marks；
    Identified to set up according to the upstream parameters, downstream parameter and the VPN and carry the two-way services stream that the VPN is identified；
    Receive the data message based on DOCSIC agreements from the CM, the VPN is added in the data message and identifies corresponding virtual LAN VLAN mark, will be packaged into added with the data message that VLAN is identified after ether network packet and flow to network side forwarding by the two-way services.
    2nd, the method as described in claim 1, it is characterised in that the two-way services stream for carrying the VPN marks according to the upstream parameters, downstream parameter and the VPN mark foundation is specifically included：
    The quantity of upstream and the quantity of downstream are calculated according to the upstream parameters and downstream parameter, if the quantity of the upstream is more than the quantity of the downstream, and the VPN marks are carried in one or more in the upstream, then set up and the up quantity identical two-way services stream, wherein, two-way services stream corresponding with the upstream for carrying VPN carries the VPN marks.
    3rd, the method as described in claim 1, it is characterised in that the two-way services stream for carrying the VPN marks according to the upstream parameters, downstream parameter and the VPN mark foundation is specifically included：
    The quantity of upstream and the quantity of downstream are calculated according to the upstream parameters and downstream parameter, if the quantity of the upstream is more than the quantity of the downstream, and the VPN marks are carried in one or more in the downstream, then the VPN is copied on corresponding upstream, set up and the up quantity identical two-way services stream, wherein, two-way services stream corresponding with the upstream for carrying VPN carries the VPN marks.
    4th, the method as described in claim 1, it is characterised in that the two-way services stream for carrying the VPN marks according to the upstream parameters, downstream parameter and the VPN mark foundation is specifically included：
    The quantity of upstream and the quantity of downstream are calculated according to the upstream parameters and downstream parameter, such as The quantity of really described downstream is more than the quantity of the upstream, and the VPN marks are carried in one or more in the downstream, then set up and the descending quantity identical two-way services stream, wherein, two-way services stream corresponding with the downstream for carrying VPN carries the VPN marks.
    5th, the method as described in claim 1, it is characterised in that the two-way services stream for carrying the VPN marks according to the upstream parameters, downstream parameter and the VPN mark foundation is specifically included：
    The quantity of upstream and the quantity of downstream are calculated according to the upstream parameters and downstream parameter, if the quantity of the downstream is more than the quantity of the upstream, and the VPN marks are carried in one or more in the upstream, then the VPN is copied in corresponding downstream, set up and the descending quantity identical two-way services stream, wherein, two-way services stream corresponding with the downstream for carrying VPN carries the VPN marks.
    6th, the method as described in claim 1 to 5 any one, it is characterized in that, the VPN is also carried in the configuration file and identifies corresponding VLAN marks, then the corresponding virtual LAN VLAN mark of the VPN marks is added in the data message and is specifically included：
    The VPN marks corresponding virtual LAN VLAN mark is added in the data message with the VLAN corresponding relations identified according to the VPN marks locally preserved.
    7th, a kind of distribution cable modulation /demodulation terminal system D-CMTS, it is characterised in that including：First data collector, the configuration file for obtaining the CM after cable modem termination CM reaches the standard grade；The configuration file carries upstream parameters, downstream parameter and VPN VPN marks；
    Processor, the two-way services stream that the VPN is identified is carried for identifying to set up according to the upstream parameters, downstream parameter and the VPN；
    Second data collector, for receiving the data message based on DOCSIC agreements from the CM, the VPN is added in the data message and identifies corresponding virtual LAN VLAN mark, will be packaged into added with the data message that VLAN is identified after ether network packet and flow to network side forwarding by the two-way services.
    8th, D-CMTS according to claim 7, it is characterized in that, the processor according to the upstream parameters and downstream parameter specifically for calculating the quantity of upstream and the quantity of downstream, if the quantity of the upstream is more than the quantity of the downstream, and VPN marks are carried in the upstream In one or more in, then set up with the up quantity identical two-way services stream, wherein, two-way services stream corresponding with the upstream for carrying VPN carries VPN mark.
    9, D-CMTS according to claim 7, it is characterized in that, the processor according to the upstream parameters and downstream parameter specifically for calculating the quantity of upstream and the quantity of downstream, if the quantity of the upstream is more than the quantity of the downstream, and the VPN marks are carried in one or more in the downstream, then the VPN is copied on corresponding upstream, set up and the up quantity identical two-way services stream, wherein, two-way services stream corresponding with the upstream for carrying VPN carries the VPN marks.
    10th, D-CMTS according to claim 7, it is characterized in that, the processor according to the upstream parameters and downstream parameter specifically for calculating the quantity of upstream and the quantity of downstream, if the quantity of the downstream is more than the quantity of the upstream, and the VPN marks are carried in one or more in the downstream, then set up and the descending quantity identical two-way services stream, wherein, two-way services stream corresponding with the downstream for carrying VPN carries the VPN marks.
    11, D-CMTS according to claim 7, it is characterized in that, the processor according to the upstream parameters and downstream parameter specifically for calculating the quantity of upstream and the quantity of downstream, if the quantity of the downstream is more than the quantity of the upstream, and the VPN marks are carried in one or more in the upstream, then the VPN is copied on corresponding downstream, set up and the descending quantity identical two-way services stream, wherein, two-way services stream corresponding with the downstream for carrying VPN carries the VPN marks.
    12nd, a kind of cable bearing data service interface specification system, it is characterised in that including such as claim
    D-CMTS described in 7-11 any one.
    13rd, system according to claim 12, it is characterised in that the system is also including cable modem termination CM, and the CM is additionally operable to send the blunt texts of DHCP request ^, request distribution IP address to Dynamic Host Configuration Protocol server by the D-CMTS.
CN201380002336.5A 2013-11-26 2013-11-26 Method and device for forwarding packet in data-over-cable service interface specification system Pending CN104838622A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2013/087829 WO2015077913A1 (en) 2013-11-26 2013-11-26 Method and device for forwarding packet in data-over-cable service interface specification system

Publications (1)

Publication Number Publication Date
CN104838622A true CN104838622A (en) 2015-08-12

Family

ID=53198167

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201380002336.5A Pending CN104838622A (en) 2013-11-26 2013-11-26 Method and device for forwarding packet in data-over-cable service interface specification system

Country Status (2)

Country Link
CN (1) CN104838622A (en)
WO (1) WO2015077913A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105812352B (en) * 2016-02-23 2019-07-19 四川长虹电器股份有限公司 Remote Visit and Control list generation and data package processing method for CM
EP3701683B1 (en) 2017-10-24 2023-09-20 InterDigital CE Patent Holdings Cable modem interface mask based virtual local area network mapping

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1416239A (en) * 2001-10-31 2003-05-07 华为技术有限公司 Method for switching in virtual local area network of the access network with mixed optical fiber and coaxial line
CN1731757A (en) * 2004-08-05 2006-02-08 华为技术有限公司 Method and system for providing QoS assurance in edge router
CN101453758A (en) * 2007-11-30 2009-06-10 华为技术有限公司 Method, device and corresponding system for implementing flow control management in general access network
CN101754275A (en) * 2002-08-14 2010-06-23 Lg电子株式会社 Bidirectional packet data transmission system and method
US20130191663A1 (en) * 2012-01-20 2013-07-25 Cisco Technology, Inc. System and method to conserve power in an access network without loss of service quality

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1416239A (en) * 2001-10-31 2003-05-07 华为技术有限公司 Method for switching in virtual local area network of the access network with mixed optical fiber and coaxial line
CN101754275A (en) * 2002-08-14 2010-06-23 Lg电子株式会社 Bidirectional packet data transmission system and method
CN1731757A (en) * 2004-08-05 2006-02-08 华为技术有限公司 Method and system for providing QoS assurance in edge router
CN101453758A (en) * 2007-11-30 2009-06-10 华为技术有限公司 Method, device and corresponding system for implementing flow control management in general access network
US20130191663A1 (en) * 2012-01-20 2013-07-25 Cisco Technology, Inc. System and method to conserve power in an access network without loss of service quality

Also Published As

Publication number Publication date
WO2015077913A1 (en) 2015-06-04

Similar Documents

Publication Publication Date Title
CN102143035B (en) Data traffic processing method, network device and network system
US9258742B1 (en) Policy-directed value-added services chaining
CN100534055C (en) Method for implementing network access through broadband router
CN102891790B (en) The VPN virtual method of the privately owned cloud of a kind of accesses virtual and system
CN102970227A (en) Method and device for achieving virtual extensible local area network (VXLAN) message transmitting in application specific integrated circuit (ASIC)
CN105025044A (en) Device control method and device control system
CN106453027A (en) GRE (Generic Route Encapsulation) tunnel realization method, access equipment and aggregation gateway
CN102238075A (en) IPv6 (Internet Protocol version 6) routing establishing method based on Ethernet Point-to-Point Protocol and access server
EP3879779A1 (en) Bearer side network system, fixed-mobile coexistence and convergence system, and deployment method therefor
CN100433714C (en) Method for transmission processing IP fragment message
CN107770012A (en) A kind of broad band access method, device and virtual broadband RAS system
CN202285423U (en) Intelligent set top box
CN101026547A (en) Method and system for accessing Intranct IPv6 host into global IPv6 network
CN102055642A (en) Data message conversion method
CN106789541A (en) A kind of across data center communication means and network system based on SDN
CN106789263B (en) System for realizing IPv4 and IPv6 dual-stack flow unified bandwidth control based on SNMP
EP2897328A1 (en) Method, system and apparatus for establishing communication link
CN100389570C (en) Method and system for testing functions of forwarding actual services at communication nodes
CN104838622A (en) Method and device for forwarding packet in data-over-cable service interface specification system
CN103391251B (en) A kind of method and apparatus reducing redundant flow in PBB network
CN107547467B (en) Circuit authentication processing method, system and controller
CN109857419B (en) Method and device for automatically upgrading scheduling system
CN105323159B (en) The processing method and processing device of data message
CN102868642A (en) Method and device for achieving NVGRE message transmission in application specific integrated circuit (ASIC)
CN202663430U (en) Mobile network data transmission application system

Legal Events

Date Code Title Description
PB01 Publication
EXSB Decision made by sipo to initiate substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20150812