CN102957589A - Method, network node and system for service data transmission - Google Patents
Method, network node and system for service data transmission Download PDFInfo
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- CN102957589A CN102957589A CN2011102431821A CN201110243182A CN102957589A CN 102957589 A CN102957589 A CN 102957589A CN 2011102431821 A CN2011102431821 A CN 2011102431821A CN 201110243182 A CN201110243182 A CN 201110243182A CN 102957589 A CN102957589 A CN 102957589A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/38—Flow based routing
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- 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]
- H04L12/4645—Details on frame tagging
- H04L12/465—Details on frame tagging wherein a single frame includes a plurality of VLAN tags
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/14—Multichannel or multilink protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/26—Special purpose or proprietary protocols or architectures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
Abstract
An embodiment of the invention discloses a method, a network node and a system for service data transmission, applies to a TRILL (transparent interconnection of lots of links) network, relates to the communication field and aims to divide different network topologies according to bearer service types and improve availability of link bandwidth. The method includes: searching a mapping strategy table according to data transmission types and acquiring a corresponding outer VLAN (virtual local area network); acquiring an alias destination of service data according to an inner VLAN and a service data destination address, and acquiring a transmission path of the service data in the TRILL network according to the alias destination and the outer VLAN; subjecting the service data to TRILL capsulation and outer ETH (Ethernet) capsulation, transmitting the data to a destination node of the service data through a transmission path; and allowing the destination node to de-capsulate the service data to obtain service data which is transmitted to corresponding user equipment. The method, network node and system are mainly applied to service data transmission.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method, network node and system of business data transmission.
Background technology
At Traditional IP (Internet Protocol, Internet protocol) in the network, only there is a unicast topologies, so only safeguard a unicast forwarding table in the IP network, so in the process of transfer of data, at first obtain MAC (Medium Access Control, the medium access control) address of the next-hop node of the transmission of data by searching this unicast forwarding table, carry out transfer of data according to described MAC Address.The transfer of data of all business datums all adopts same route computing method to search this unique unicast forwarding table, obtains the required transmission link of service data transmission.
TRILL (Transparent interconnection of Lots of Link, multilink transparent interconnection) is the Routing Protocol that calculates based on Link State on a kind of double layer network.ISIS (intermediate system to intermediate system, intermediate protocol is to intermediate protocol) can directly move based on link layer, so the TRILL agreement can realize by expansion ISIS, can realize large two layers of networking by TRILL.But, the transfer of data of present TRILL network also adopts unicast topologies, all network nodes are all safeguarded an identical unicast forwarding table and multicast forward table, and whole network is followed SPF (Shortest Path First, SPF) principle dispense path, may cause transmitting the required PHB of different kinds of business data (Per-Hop Behavior, per hop behavior) part is identical, like this so that in the network carrying of part transmission link overweight, and the carrying of other part transmission links kicks the beam, so that the load imbalance of network transmission link causes the waste of Internet resources, reduced the utilance of network.
Summary of the invention
An aspect of of the present present invention provides a kind of method, network node and system of business data transmission, is applied to can realize the load balancing of network transmission link in the TRILL network, has reduced the waste of Internet resources, has improved the utilance of network.
For achieving the above object, an aspect of of the present present invention adopts following technical scheme:
A kind of method of business data transmission is applied to comprise in the TRILL network:
Receive the business datum that user terminal sends, determine the outer virtual LAN VLAN of the described business datum of transmission according to data parameters corresponding to described business datum;
Obtain the purpose another name of described business datum according to inner VLAN and described business datum destination address, and obtain transmission path in business datum described in the TRILL network according to described purpose another name and described outside VLAN;
Described business datum is carried out multilink transparent interconnection TRILL encapsulation and outer Ethernet ETH encapsulation, in order to described business datum is mapped in the described outside VLAN;
To give the network node corresponding to destination address of described business datum through the business data transmission of TRILL encapsulation and outer ETH encapsulation by described transmission path;
The described business datum through TRILL encapsulation and ETH encapsulation of the network node that described destination address is corresponding is carried out decapsulation, obtains described business datum, and the described business datum that described decapsulation is obtained sends to corresponding subscriber equipment.
A kind of entrance network node is applied to comprise in the TRILL network:
Receiving element is used for receiving the business datum that user terminal sends;
Determining unit is used for the outer virtual LAN VLAN according to the described business datum of the definite transmission of data parameters corresponding to described business datum;
Acquiring unit is used for obtaining according to inner VLAN and described business datum destination address the purpose another name of described business datum, and obtains transmission path in business datum described in the TRILL network according to described purpose another name and described outside VLAN;
Map unit is used for described business datum is carried out multilink transparent interconnection TRILL encapsulation and outer Ethernet ETH encapsulation, in order to described business datum is mapped in the described outside VLAN;
Transmitting element, being used for will be through the business data transmission of TRILL encapsulation and outer ETH encapsulation to forward node by described transmission path, so that described forward node will be through TRILL encapsulates and outer ETH encapsulates the business data transmission outlet network node to correspondence.
A kind of transmission network node is applied to comprise in the TRILL network:
Receiving element is used for receiving the business datum through multilink transparent interconnection TRILL encapsulation and outer Ethernet ETH encapsulation that the upstream network node sends;
Resolution unit is used for described business datum through TRILL encapsulation and outer ETH encapsulation is resolved, and obtains the business datum through the TRILL encapsulation;
Query unit is for obtain the described business datum next-hop network of transmission address of node from described business data transmission path;
Encapsulation unit, be used for the business datum after the described process TRILL encapsulation being carried out certificate carrying out outer ETH encapsulation according to outer virtual LAN VLAN corresponding to described business datum, described business datum next-hop network address of node and described business datum outlet network node;
Transmitting element is used for according to described next-hop network address of node, and described business datum through TRILL encapsulation and ETH encapsulation is sent to described next-hop network node.
A kind of outlet network node is applied to comprise in the TRILL network:
Receiving element is used for receiving the business datum through multilink transparent interconnection TRILL encapsulation and outer Ethernet ETH encapsulation that upstream node sends;
The first resolution unit is used for described business datum through TRILL encapsulation and outer ETH encapsulation is resolved, and obtains the business datum through the TRILL encapsulation;
Query unit is for obtain the described business datum next-hop network of transmission address of node from described business data transmission path;
The second resolution unit is used for to resolving through the business datum of TRILL encapsulation, obtaining business datum when described query unit determines that described outlet network node is the final jump network node of the described business datum of transmission;
Transmitting element is used for described business datum is sent to corresponding subscriber equipment.
A kind of system of business data transmission is applied to comprise in the TRILL network: entrance network node, transmission network node, outlet network node;
Described entrance network node is used for receiving the business datum that user terminal sends; Determine the outer virtual LAN VLAN of the described business datum of transmission according to data parameters corresponding to described business datum; Obtain the purpose another name of described business datum according to inner VLAN and described business datum destination address, and obtain transmission path in business datum described in the TRILL network according to described purpose another name and described outside VLAN; Described business datum is carried out multilink transparent interconnection TRILL encapsulation and outer Ethernet ETH encapsulation, in order to business datum is mapped in the described outside VLAN; Will be through the business data transmission of TRILL encapsulation and outer ETH encapsulation to forward node by described transmission path, so that the business data transmission that described forward node will encapsulate through TRILL encapsulation and outer ETH is to the outlet network node of correspondence;
Described transmission network node is used for receiving the business datum through multilink transparent interconnection TRILL encapsulation and outer Ethernet ETH encapsulation that the upstream network node sends; Described business datum through TRILL encapsulation and outer ETH encapsulation is resolved, obtain the business datum through the TRILL encapsulation; From described business data transmission path, obtain the described business datum next-hop network of transmission address of node; According to outer virtual LAN VLAN corresponding to described business datum, described business datum next-hop network address of node and described business datum outlet network node, the business datum after the described process TRILL encapsulation is carried out certificate carry out outer ETH encapsulation; According to described next-hop network address of node, described business datum through TRILL encapsulation and ETH encapsulation is sent to described next-hop network node.
Described outlet network node is used for receiving the business datum through multilink transparent interconnection TRILL encapsulation and outer Ethernet ETH encapsulation that upstream node sends; Described business datum through TRILL encapsulation and outer ETH encapsulation is resolved, obtain the business datum through the TRILL encapsulation; From described business data transmission path, obtain the described business datum next-hop network of transmission address of node; When the outlet network node is the final jump network node of the described business datum of transmission, to resolving through the business datum of TRILL encapsulation, obtain business datum; Described business datum is sent to corresponding subscriber equipment.
In the technical scheme that one aspect of the present invention provides, utilize the outside VLAN in the TRILL network, whole network is divided into a plurality of VLAN topological structures, the corresponding unicast forwarding table of each VLAN and multicast forward table, the data that enter in the TRILL network are corresponded in the different VLANs by different business data type or different business data traffic, thereby having avoided all to enter business datum in the TRILL network all needs to inquire about same and transmits, reduced the overlapping of different business data type or different business data traffic transmission path, effectively alleviated in the network carrying of part transmission link overweight, and the problem that the carrying of part transmission link kicks the beam, so that the load balancing of network transmission link, save Internet resources, increased the utilance of network.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the method flow diagram of business data transmission in the embodiment of the invention 1;
Fig. 2 is business data transmission schematic diagram in the embodiment of the invention 1;
Fig. 3 is the method flow diagram of business data transmission in the embodiment of the invention 2;
Fig. 4 is the composition frame chart of a kind of entrance network node in the embodiment of the invention 3;
Fig. 5 is the composition frame chart of another kind of entrance network node in the embodiment of the invention 3;
Fig. 6 is the composition frame chart of another kind of entrance network node in the embodiment of the invention 3;
Fig. 7 is the composition frame chart of another kind of entrance network node in the embodiment of the invention 3;
Fig. 8 is the composition frame chart of a kind of transmission network node in the embodiment of the invention 3;
Fig. 9 is the composition frame chart of another kind of transmission network node in the embodiment of the invention 3;
Figure 10 is a kind of composition frame chart that exports network node in the embodiment of the invention 3;
Figure 11 is the composition frame chart of another kind of outlet network node in the embodiment of the invention 3;
Figure 12 is the composition frame chart of service transmission system in the embodiment of the invention 3.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Embodiment 1
The embodiment of the invention provides a kind of method of business data transmission, is applied in the TRILL network, and as shown in Figure 1, the method comprises:
101, receive the business datum that user terminal sends, determine the outside VLAN (Virtual Local Area Network, VLAN) of the described business datum of transmission according to data parameters corresponding to described business datum.
Wherein, described outside VLAN is the many topology signs of network, determines the outside VLAN of the described business datum of transmission according to data parameters corresponding to described business datum, can adopt but be not limited to following method and realize, concrete comprises:
Traffic data type according to the outside VLAN that pre-sets and described business datum generates the mapping policy table, perhaps the business datum flow according to the outside VLAN that pre-sets and described business datum collection generates the mapping policy table, determines the outer virtual LAN VLAN of the described business datum of transmission by the query mappings Policy Table.Need to prove, before carrying out the embodiment of the invention, predefine traffic data type or the business datum flow mapping policy table corresponding with outside VLAN.This mapping table generally comprises two fields, and this field is business datum parameter field and corresponding outside VLAN field.For example, service based transfer of data schematic diagram as shown in Figure 2, the mapping policy table that the outside VLAN that its basis pre-sets and different business flow are corresponding is as shown in table 1, comprises two fields of business datum flow and corresponding outside VLAN:
| Data traffic (CE VLAN) | Outside |
| 100 | 10 |
| 200 | 20 |
| ... | ... |
Table 1
Similar according to the policy mappings table that mapping policy table corresponding to the outside VLAN that pre-sets and traffic data type is corresponding with the outside VLAN that pre-sets and business datum flow, comprise two fields of traffic data type and corresponding outside VLAN, the embodiment of the invention will repeat no more herein.
102, obtain the purpose another name of described business datum according to inner VLAN and described business datum destination address, and obtain transmission path in business datum described in the TRILL network according to described purpose another name and described outside VLAN.
Wherein, obtain the purpose another name according to the destination address of inner VLAN and business datum, this purpose another name is exactly the another name of destination device for unicast message, and this purpose another name is the multicast distribution tree tree root another name of selecting for multicast and broadcasting packet.
Concrete, obtain the purpose another name of described business datum according to inner VLAN and described business datum destination address, and according to described purpose another name and described outside VLAN obtain the method for the transmission path of business datum described in the TRILL network can for:
When the business datum that receives is the known unicast message, according to two layers of unicast forwarding table of destination address inquiry of inner VLAN and described business datum, wherein said two layers of unicast forwarding table comprise network node another name and the inner VLAN network node address in the TRILL network.If there is the destination address of described business datum in described two layers of unicast forwarding table, then obtain destination node another name corresponding to described destination address as described purpose another name, according to described outside VLAN and described purpose another name inquiry clean culture route forwarding table, obtain the transmission path of described business datum again.If there is not the destination address of described business datum in described two layers of unicast forwarding table, then inquire about according to described inner VLAN inquiry inner VLAN and TRILL multicast distribution tree tree root another name mapping table, obtain TRILL multicast distribution tree tree root another name corresponding to inner VLAN as described purpose another name, and transmit according to the Multicast Routing that described outside VLAN and purpose another name is searched the TRILL network, obtain the transmission path of described business datum.
When the business datum that receives was unknown unicast, multicast or broadcasting packet, according to the destination address inquiry second-layer multicast forwarding table of inner VLAN and described business datum, wherein said second-layer multicast forwarding table comprised multicast address and multicast distribution tree tree root another name.Obtain TRILL network multicast distribution tree tree root another name as described purpose another name, and transmit according to the Multicast Routing that described outside VLAN and purpose another name are searched the TRILL network, obtain the transmission path of described business datum.
For example, as shown in table 2, this table is two layers of unicast forwarding table corresponding to inner VLAN in Fig. 2, comprises network node another name and inner VLAN network node address in the TRILL network in described two layers of unicast forwarding table.When two layers of unicast forwarding table of inquiry, according to the address entries in the destination address inquiry first row of business datum, then in the another name item of secondary series, obtain corresponding purpose another name.
Table 2
If there is the destination address of described business datum in two layers of unicast forwarding table corresponding to described outside VLAN, then determine that according to described destination address the another name of the network node that the destination address of described business datum is corresponding calls as purpose; And according to described purpose another name query routing unicast forwarding table, obtain the transmission path in business datum described in the TRILL network.If there is not the destination address of described business datum in two layers of unicast forwarding table corresponding to described outside VLAN, then inquiry " inner VLAN and TRILL multicast distribution tree tree root another name mapping table ", obtain distribution tree tree root another name as the purpose another name, wherein only comprise inner VLAN in this table and call with corresponding distribution tree tree root.Then transmit according to distribution tree tree root another name inquiry Multicast Routing, obtain the transmission path in business datum described in the TRILL network.
Need to prove, need corresponding according to described destination address in advance network node and predetermined route selection algorithm, generate route forwarding table, concrete generation method can be with reference to any route selection method of the prior art, the embodiment of the invention does not limit this, for example, this predetermined route selection algorithm is shortest path selection algorithm etc.
103, described business datum is carried out multilink transparent interconnection TRILL encapsulation and outer Ethernet ETH encapsulation, in order to business datum is mapped in the described outside VLAN.
104, will give the network node corresponding to destination address of described business datum through the business data transmission of TRILL encapsulation and outer ETH encapsulation by described transmission path.
Wherein, will give the network node corresponding to destination address of described business datum through the business data transmission of TRILL encapsulation and outer ETH encapsulation by described transmission path, and can realize by following method, the method comprises:
Obtain the next-hop network address of node from described transmission path, according to the next-hop network address of node, the business data transmission that will encapsulate through TRILL encapsulation and outer ETH is to the next-hop network node; Be transferred to the network node corresponding to destination address of described business datum after the above-mentioned forwarding process of business datum process execution one or many through TRILL encapsulation and outer ETH encapsulation.
105, the described business datum through TRILL encapsulation and ETH encapsulation of the network node that described destination address is corresponding is carried out decapsulation, obtains described business datum, and the described business datum that described decapsulation is obtained sends to corresponding subscriber equipment.
Particularly, after network node corresponding to described destination address received business datum, discovery was final jump, and namely the current network node address is identical with destination address.Described business datum through TRILL encapsulation and ETH encapsulation is carried out decapsulation, obtain described business datum, and the described business datum that described deblocking obtains is sent to corresponding subscriber equipment from the network node outlet.
In the technical scheme that the embodiment of the invention provides, utilize the outside VLAN in the TRILL network, whole network is divided into a plurality of VLAN topological structures, the corresponding unicast forwarding table of each VLAN and multicast forward table, the data that enter in the TRILL network are corresponded in the different VLANs by different business data type or different business data traffic, thereby having avoided all to enter business datum in the TRILL network all needs to inquire about same and transmits, reduced the overlapping of different business data type or different business data traffic transmission path, effectively alleviated in the network carrying of part transmission link overweight, and the problem that the carrying of part transmission link kicks the beam, so that the load balancing of network transmission link, save Internet resources, increased the utilance of network.
Embodiment 2
The embodiment of the invention provides a kind of method of business data transmission, is applied in the TRILL network, and as shown in Figure 3, the method comprises:
201, on the network node port of the TRILL network interconnection, according to the type of business datum or the dissimilar outside VLAN corresponding to business datum of flow set of business datum, and sign corresponding to outside VLAN that arranges sent to described network node communicate other network nodes that are connected.
The network node that 202, will belong to same outside VLAN divides into groups, and for setting up communication link between the network node adjacent in this group, and according to the communication link of setting up between predetermined route selection algorithm and the described adjacent network node, generate corresponding singlecast router and transmit with Multicast Routing and transmit.
Wherein, the subject of implementation of step 201 and step 202 can be each network node in the TRILL network, comprises entrance network node, transmission network node, outlet network node.When carrying out the present embodiment, corresponding each network node has generated singlecast router and has transmitted with Multicast Routing and transmit.
Particularly, when described data retransmission form was clean culture, this was transmitted as singlecast router and transmits, and as shown in table 3, this table is transmitted for the network node RB5 corresponding singlecast router in outer VLAN=20 VLAN on Fig. 2.Singlecast router is transmitted and is comprised purpose another name, next-hop mac address and outbound port, so that step 204 is inquired about the clean culture route forwarding table according to outside VLAN and purpose another name when obtaining the transmission path of business datum.Concrete, then the another name item according to purpose another name inquiry first row obtains corresponding transmission path, i.e. next-hop mac address and outbound port.
Table 3
Particularly, when described data retransmission form is multicast, the network node of choosing the maximum address among the current VLAN is the distribution tree tree root, calculates and cook up distribution tree by the distribution tree tree root according to shortest path first, guarantees not have in the distribution tree loop link to produce.And generating Multicast Routing transmits, as shown in table 4, this table is transmitted for the corresponding Multicast Routing in the VLAN=20 VLAN of the network node RB5 on Fig. 2, comprise distribution tree tree root another name, next-hop mac address and outbound port, so that step 204 is transmitted according to outside VLAN and distribution tree tree root another name inquiry Multicast Routing when obtaining the transmission path of business datum.One of them distribution tree tree root another name can corresponding a plurality of next-hop mac address and outbound port, and then the another name item according to distribution tree tree root another name inquiry first row obtains corresponding transmission path, i.e. next-hop mac address and outbound port.
Table 4
203, receive the business datum that user terminal sends, determine the VLAN of the described business datum of transmission according to data parameters corresponding to described business datum.
Wherein, receive the business datum that user terminal sends, determine that according to data parameters corresponding to described business datum the device of the VLAN of the described business datum of transmission can be the entrance network node, concrete step is described the corresponding description in can reference example 1 step 101, and the embodiment of the invention will repeat no more herein.
204, obtain the purpose another name of described business datum according to inner VLAN and described business datum destination address, and obtain transmission path in business datum described in the TRILL network according to described purpose another name and described outside VLAN.
Wherein, the device that obtains the transmission path of business datum in the TRILL network can be entrance network node or transmission network node, and concrete method is described in detail in the step 102 of embodiment 1, and the embodiment of the invention will repeat no more here.
205, described business datum is carried out multilink transparent interconnection TRILL encapsulation and outer Ethernet ETH encapsulation, in order to described business datum is mapped in the described outside VLAN.
Wherein, TRILL encapsulation comprises the encapsulation of described business datum being carried out Ingress node another name and Egress node another name, enters node and Egress node with definite business datum.Comprise outer VLAN identification in the outer ETH encapsulation, in order to business datum is mapped in the described outside VLAN, also comprise the per hop behavior PHB of the different transmission path of determining transmission different kinds of business data, i.e. the next hop address of each data retransmission.The device that described business datum is carried out TRILL encapsulation and outer ETH encapsulation can be the entrance network node.
206, from described transmission path, obtain the next-hop network address of node, and will give described next-hop network node through the business data transmission of TRILL encapsulation and outer ETH encapsulation, until with network node corresponding to destination address of described business data transmission to described business datum.
Wherein, comprise in the transmission path of business datum: the outbound port of purpose another name, next-hop network address and business datum.From transmission path, obtain the next-hop network node address, in order to business datum is sent to the corresponding network equipment from outbound port by the next-hop network address.
Concrete, in the business data transmission process flow process of TRILL encapsulation and outer ETH encapsulation can for: entrance network node business datum is carried out the TRILL encapsulation and outer ETH encapsulates, and sends to the next-hop network node; The transmission network node receives through after the business datum that TRILL encapsulates and outer ETH encapsulates, carry out outer ETH decapsulation and read the information that comprises in the outer ETH encapsulation, determine again to carry out outer ETH encapsulation behind the next-hop network node, and send to the next-hop network node; The outlet network node carries out decapsulation through the business datum of TRILL encapsulation and ETH encapsulation, obtains described business datum.
207, the described business datum through TRILL encapsulation and ETH encapsulation of the network node that described destination address is corresponding is carried out decapsulation, obtains described business datum, and the described business datum that described decapsulation is obtained sends to corresponding subscriber equipment.
Particularly, after network node corresponding to described destination address received business datum, find that the current network node address is identical with destination address, namely current network node is the outlet network node.The described business datum through TRILL encapsulation and ETH encapsulation of outlet network node is carried out decapsulation, obtains described business datum, and the described business datum that described deblocking obtains is sent to corresponding subscriber equipment from the network node outlet.
In the technical scheme that the embodiment of the invention provides, utilize the outside VLAN in the TRILL network, whole network is divided into a plurality of VLAN topological structures, the corresponding unicast forwarding table of each VLAN and multicast forward table, the data that enter in the TRILL network are corresponded in the different VLANs by different business data type or different business data traffic, thereby having avoided all to enter business datum in the TRILL network all needs to inquire about same and transmits, reduced the overlapping of different business data type or different business data traffic transmission path, effectively alleviated in the network carrying of part transmission link overweight, and the problem that the carrying of part transmission link kicks the beam, so that the load balancing of network transmission link, save Internet resources, increased the utilance of network.
Embodiment 3
The embodiment of the invention provides a kind of entrance network node, is applied in the TRILL network, and as shown in Figure 4, this entrance network node comprises: receiving element 31, determining unit 32, acquiring unit 33, map unit 34, transmitting element 35.
Receiving element 31 is used for receiving the business datum that user terminal sends.
Determining unit 32 is used for the outer virtual LAN VLAN according to the described business datum of the definite transmission of data parameters corresponding to described business datum.Wherein, described data parameters can be the flow of traffic data type or business datum.This data parameters corresponding to described business datum that receives according to described receiving element 31 determines that the outer virtual LAN VLAN of the described business datum of transmission is specifically as follows: the traffic data type according to the outside VLAN that pre-sets and described business datum generates the mapping policy table, perhaps the business datum flow according to the outside VLAN that pre-sets and described business datum collection generates the mapping policy table, determines the outer virtual LAN VLAN of the described business datum of transmission by the query mappings Policy Table.
Acquiring unit 33 is used for obtaining according to inner VLAN and described business datum destination address the purpose another name of described business datum, and obtains transmission path in business datum described in the TRILL network according to described purpose another name and described outside VLAN.
Transmitting element 35, being used for will be through the business data transmission of TRILL encapsulation and outer ETH encapsulation to forward node by described transmission path, so that described forward node will be through TRILL encapsulates and outer ETH encapsulates the business data transmission outlet network node to correspondence.
Further, as shown in Figure 5, this entrance network node also comprises: setting unit 36, grouped element 37, link establishment unit 38 and generation unit 39.
Setting unit 36, be used for before determining unit 32 data parameters corresponding according to described business datum determined the outside VLAN of the described business datum of transmission, on the port of the entrance network node of the TRILL network interconnection, according to the data parameters of business datum outside VLAN corresponding to dissimilar business datum is set.Wherein, described data parameters is the flow of traffic data type or business datum.
Grouped element 37 divides into groups for the network node that will belong to same outside VLAN.
Further, as shown in Figure 6, this acquiring unit 33 comprises: the first enquiry module 331, the first acquisition module 332 and/or the second enquiry module 333, the second acquisition module 334.
The first enquiry module 331 is used for the two layers of unicast forwarding table of destination address inquiry according to inner VLAN and described business datum, and wherein said two layers of unicast forwarding table comprise network node another name and the inner VLAN network node address in the TRILL network.
The first acquisition module 332, be used for when there is the destination address of described business datum in described two layers of unicast forwarding table, obtain destination node another name corresponding to described destination address as described purpose another name, according to described outside VLAN and described purpose another name inquiry clean culture route forwarding table, obtain the transmission path of described business datum again.
Described the first acquisition module 332, also be used for when there is not the destination address of described business datum in described two layers of unicast forwarding table, inquiry is according to described inner VLAN inquiry inner VLAN and TRI LL multicast distribution tree tree root another name mapping table, obtain TRILL multicast distribution tree tree root another name corresponding to inner VLAN as described purpose another name, and transmit according to the Multicast Routing that described outside VLAN and purpose another name is searched the TRILL network, obtain the transmission path of described business datum.
The second enquiry module 333 is used for the destination address inquiry second-layer multicast forwarding table according to inner VLAN and described business datum, and wherein said second-layer multicast forwarding table comprises multicast address and multicast distribution tree tree root another name.
The second acquisition module 334 is used for obtaining TRILL network multicast distribution tree tree root another name as described purpose another name, and transmits according to the Multicast Routing that described outside VLAN and purpose another name are searched the TRILL network, obtains the transmission path of described business datum.
Further, as shown in Figure 7, this transmitting element 35 comprises: address acquisition module 351, sending module 352.
Address acquisition module 351 is used for obtaining the next-hop network address of node from described transmission path
Sending module 352 is used for according to the next-hop network address of node, will give the next-hop network node corresponding with described address through the business data transmission of TRILL encapsulation and outer ETH encapsulation.
Need to prove, other of each functional module that the entrance network node that provides in the embodiment of the invention comprises are described, can reference example 1 and embodiment 2 in corresponding description, the embodiment of the invention will repeat no more herein.
The embodiment of the invention provides a kind of transmission network node, is applied in the TRI LL network, and as shown in Figure 8, this transmission network node comprises: receiving element 41, resolution unit 42, query unit 43, encapsulation unit 44 and transmitting element 45.
Receiving element 41 is used for receiving the business datum through multilink transparent interconnection TRILL encapsulation and outer Ethernet ETH encapsulation that the upstream network node sends.
Transmitting element 45 is used for according to described next-hop network address of node, and described business datum through TRILL encapsulation and ETH encapsulation is sent to described next-hop network node.
Further, as shown in Figure 9, this forwarded node also comprises: setting unit 46, grouped element 47, link establishment unit 48, generation unit 49.
Setting unit 46 is used for the port at described transmission network node, according to the data parameters of business datum outside VLAN corresponding to dissimilar business datum is set.
Grouped element 47 divides into groups for the network node that will belong to same outside VLAN.
Need to prove, other of each functional module that the transmission network node that provides in the embodiment of the invention comprises are described, can reference example 1 and embodiment 2 in corresponding description, the embodiment of the invention will repeat no more herein.
The embodiment of the invention provides a kind of outlet network node, is applied in the TRILL network, and as shown in figure 10, this node comprises: receiving element 51, the first resolution unit 52, query unit 53, the second resolution unit 54 and transmitting element 55.
Receiving element 51 is used for receiving the business datum through multilink transparent interconnection TRILL encapsulation and outer Ethernet ETH encapsulation that upstream node sends.
The first resolution unit 52 is used for described business datum through TRILL encapsulation and outer ETH encapsulation is resolved, and obtains the business datum through the TRILL encapsulation.
The second resolution unit 54 is used for to resolving through the business datum of TRILL encapsulation, obtaining business datum when described query unit determines that described outlet network node is the final jump network node of the described business datum of transmission.
Transmitting element 55 is used for described business datum is sent to corresponding subscriber equipment.
Further, as shown in figure 11, this outlet network node also comprises: setting unit 56, grouped element 57, link establishment unit 58, generation unit 59.
Setting unit 56 is used for the port at described outlet network node, according to the data parameters of business datum outside VLAN corresponding to dissimilar business datum is set.
Grouped element 57 divides into groups for the network node that will belong to same outside VLAN.
Need to prove, other of each functional module that the outlet network node that provides in the embodiment of the invention comprises are described, can reference example 1 and embodiment 2 in corresponding description, the embodiment of the invention will repeat no more herein.
The embodiment of the invention provides a kind of business data transmission system, is applied in the TRILL network, and as shown in figure 12, this system comprises: entrance network node 61, transmission network node 62, outlet network node 63.
Described entrance network node 61 is used for receiving the business datum that user terminal sends; Determine the outer virtual LAN VLAN of the described business datum of transmission according to data parameters corresponding to described business datum; Obtain the purpose another name of described business datum according to inner VLAN and described business datum destination address, and obtain transmission path in business datum described in the TRILL network according to described purpose another name and described outside VLAN; Described business datum is carried out multilink transparent interconnection TRILL encapsulation and outer Ethernet ETH encapsulation, in order to described business datum is mapped in the described outside VLAN; Will be through the business data transmission of TRILL encapsulation and outer ETH encapsulation to forward node by described transmission path, so that the business data transmission that described forward node will encapsulate through TRILL encapsulation and outer ETH is to the outlet network node of correspondence;
Described transmission network node 62 is used for receiving the business datum through multilink transparent interconnection TRILL encapsulation and outer Ethernet ETH encapsulation that the upstream network node sends; Described business datum through TRILL encapsulation and outer ETH encapsulation is resolved, obtain the business datum through the TRILL encapsulation; From described business data transmission path, obtain the described business datum next-hop network of transmission address of node; According to outer virtual LAN VLAN corresponding to described business datum, described business datum next-hop network address of node and described business datum outlet network node, the business datum after the described process TRILL encapsulation is carried out certificate carry out outer ETH encapsulation; According to described next-hop network address of node, described business datum through TRILL encapsulation and ETH encapsulation is sent to described next-hop network node.
Described outlet network node 63 is used for receiving the business datum through multilink transparent interconnection TRILL encapsulation and outer Ethernet ETH encapsulation that upstream node sends; Described business datum through TRILL encapsulation and outer ETH encapsulation is resolved, obtain the business datum through the TRILL encapsulation; From described business data transmission path, obtain the described business datum next-hop network of transmission address of node; When determining that described outlet network node is the final jump network node of the described business datum of transmission, to resolving through the business datum of TRILL encapsulation, obtain business datum; Described business datum is sent to corresponding subscriber equipment.
Need to prove, other of each functional module that the system of the business data transmission that provides in the embodiment of the invention comprises are described, can reference example 1, the corresponding description in embodiment 2 and the said apparatus, and the embodiment of the invention will repeat no more herein.
In the technical scheme that the embodiment of the invention provides, utilize the outside VLAN in the TRILL network, whole network is divided into a plurality of VLAN topological structures, the corresponding unicast forwarding table of each VLAN and multicast forward table, the data that enter in the TRILL network are corresponded in the different VLANs by different business data type or different business data traffic, thereby having avoided all to enter business datum in the TRILL network all needs to inquire about same and transmits, reduced the overlapping of different business data type or different business data traffic transmission path, effectively alleviated in the network carrying of part transmission link overweight, and the problem that the carrying of part transmission link kicks the beam, so that the load balancing of network transmission link, save Internet resources, increased the utilance of network.
Through the above description of the embodiments, the those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential common hardware, can certainly pass through hardware, but the former is better execution mode in a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium that can read, floppy disk such as computer, hard disk or CD etc., comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above; be the specific embodiment of the present invention only, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (19)
1. the method for a business data transmission is applied to it is characterized in that in the multilink transparent interconnection TRILL network, comprising:
Receive the business datum that user terminal sends, determine the outer virtual LAN VLAN of the described business datum of transmission according to data parameters corresponding to described business datum;
Obtain the purpose another name of described business datum according to inner VLAN and described business datum destination address, and obtain transmission path in business datum described in the TRILL network according to described purpose another name and described outside VLAN;
Described business datum is carried out TRILL encapsulation and outer Ethernet ETH encapsulation, in order to business datum is mapped in the described outside VLAN;
To give the network node corresponding to destination address of described business datum through the business data transmission of TRILL encapsulation and outer ETH encapsulation by described transmission path;
The described business datum through TRILL encapsulation and ETH encapsulation of the network node that described destination address is corresponding is carried out decapsulation, obtains described business datum, and the described business datum that described decapsulation is obtained sends to corresponding subscriber equipment.
2. the method for business data transmission according to claim 1 is characterized in that, determines that in the data parameters corresponding according to described business datum the method also comprises before the outside VLAN of the described business datum of transmission:
On the network node port of the TRILL network interconnection, according to the data parameters of business datum outside VLAN corresponding to dissimilar business datum is set;
Sign corresponding to outside VLAN that arranges sent to described network node communicate other network nodes that are connected;
The network node that will belong to same outside VLAN divides into groups, and for setting up communication link between the network node adjacent in this group;
According to the communication link of setting up between predetermined route selection algorithm and the described adjacent network node, generate corresponding singlecast router and transmit with Multicast Routing and transmit.
3. the method for business data transmission according to claim 1 and 2 is characterized in that, described data parameters is the flow of traffic data type or business datum.
4. the method for each described business data transmission is characterized in that according to claim 1-3, and described outside VLAN according to the described business datum of the definite transmission of data parameters corresponding to described business datum comprises:
Outside VLAN and data parameters corresponding to described business datum corresponding according to the dissimilar business datum that pre-sets, the outside VLAN of the described business datum of definite transmission.
5. the method for each described business data transmission according to claim 1-4, it is characterized in that, the described purpose another name that obtains described business datum according to inner VLAN and described business datum destination address, and comprise according to the transmission path that described purpose another name and described outside VLAN are obtained in business datum described in the TRILL network:
According to two layers of unicast forwarding table of destination address inquiry of inner VLAN and described business datum, wherein said two layers of unicast forwarding table comprise network node another name and the inner VLAN network node address in the TRILL network;
If there is the destination address of described business datum in described two layers of unicast forwarding table, then obtain destination node another name corresponding to described destination address as described purpose another name, according to described outside VLAN and described purpose another name inquiry clean culture route forwarding table, obtain the transmission path of described business datum again;
If there is not the destination address of described business datum in described two layers of unicast forwarding table, then inquire about according to described inner VLAN inquiry inner VLAN and TRILL multicast distribution tree tree root another name mapping table, obtain TRILL multicast distribution tree tree root another name corresponding to inner VLAN as described purpose another name, and transmit according to the Multicast Routing that described outside VLAN and purpose another name is searched the TRILL network, obtain the transmission path of described business datum.
6. the method for each described business data transmission according to claim 1-4, it is characterized in that, the described purpose another name that obtains described business datum according to inner VLAN and described business datum destination address, and obtain transmission path in business datum described in the TRILL network according to described purpose another name and described outside VLAN, also comprise:
According to the destination address inquiry second-layer multicast forwarding table of inner VLAN and described business datum, wherein said second-layer multicast forwarding table comprises multicast address and multicast distribution tree tree root another name;
Obtain TRILL network multicast distribution tree tree root another name as described purpose another name, and transmit according to the Multicast Routing that described outside VLAN and purpose another name are searched the TRILL network, obtain the transmission path of described business datum.
7. the method for each described business data transmission according to claim 1-6, it is characterized in that, describedly will through the business data transmission of TRILL encapsulation and outer ETH encapsulation network node corresponding to destination address to described business datum, comprise by described transmission path:
From described transmission path, obtain the next-hop network address of node;
According to described next-hop network address of node, will give described next-hop network node through the business data transmission of TRILL encapsulation and outer ETH encapsulation, until with network node corresponding to destination address of described business data transmission to described business datum.
8. an entrance network node is applied to it is characterized in that in the multilink transparent interconnection TRILL network, comprising:
Receiving element is used for receiving the business datum that user terminal sends;
Determining unit is used for the outer virtual LAN VLAN according to the described business datum of the definite transmission of data parameters corresponding to described business datum;
Acquiring unit is used for obtaining according to inner VLAN and described business datum destination address the purpose another name of described business datum, and obtains transmission path in business datum described in the TRI LL network according to described purpose another name and described outside VLAN;
Map unit is used for described business datum is carried out multilink transparent interconnection TRILL encapsulation and outer Ethernet ETH encapsulation, in order to described business datum is mapped in the described outside VLAN;
Transmitting element, being used for will be through the business data transmission of TRILL encapsulation and outer ETH encapsulation to forward node by described transmission path, so that described forward node will be through TRILL encapsulates and outer ETH encapsulates the business data transmission outlet network node to correspondence.
9. entrance network node according to claim 8 is characterized in that, also comprises:
Setting unit, be used for before the determining unit data parameters corresponding according to described business datum determined the outside VLAN of the described business datum of transmission, on the port of the entrance network node of the TRILL network interconnection, according to the data parameters of business datum outside VLAN corresponding to dissimilar business datum is set;
Grouped element divides into groups for the network node that will belong to same outside VLAN;
The link establishment unit is used between the network node adjacent in this group and sets up communication link;
Generation unit is used for the communication link set up according between predetermined route selection algorithm and the described adjacent network node, generates corresponding singlecast router and transmits with Multicast Routing and transmit.
10. according to claim 8 or 9 described entrance network nodes, it is characterized in that, described data parameters is the flow of traffic data type or business datum.
11. each described entrance network node according to claim 8-10, it is characterized in that, described determining unit is used for determining the outside VLAN of the described business datum of transmission according to corresponding outside VLAN and data parameters corresponding to described business datum of dissimilar business datum that pre-sets.
12. each described entrance network node is characterized in that according to claim 8-11, described acquiring unit comprises:
The first enquiry module is used for the two layers of unicast forwarding table of destination address inquiry according to inner VLAN and described business datum, and wherein said two layers of unicast forwarding table comprise network node another name and the inner VLAN network node address in the TRILL network;
The first acquisition module, be used for when there is the destination address of described business datum in described two layers of unicast forwarding table, obtain destination node another name corresponding to described destination address as described purpose another name, according to described outside VLAN and described purpose another name inquiry clean culture route forwarding table, obtain the transmission path of described business datum again;
Described the first acquisition module, also be used for when there is not the destination address of described business datum in described two layers of unicast forwarding table, inquiry is according to described inner VLAN inquiry inner VLAN and TRILL multicast distribution tree tree root another name mapping table, obtain TRILL multicast distribution tree tree root another name corresponding to inner VLAN as described purpose another name, and transmit according to the Multicast Routing that described outside VLAN and purpose another name is searched the TRILL network, obtain the transmission path of described business datum.
13. each described entrance network node is characterized in that according to claim 8-11, described acquiring unit also comprises:
The second enquiry module is used for the destination address inquiry second-layer multicast forwarding table according to inner VLAN and described business datum, and wherein said second-layer multicast forwarding table comprises multicast address and multicast distribution tree tree root another name;
The second acquisition module is used for obtaining TRILL network multicast distribution tree tree root another name as described purpose another name, and transmits according to the Multicast Routing that described outside VLAN and purpose another name are searched the TRILL network, obtains the transmission path of described business datum.
14. each described entrance network node is characterized in that according to claim 8-13, described transmitting element comprises:
Address acquisition module is used for obtaining the next-hop network address of node from described transmission path;
Sending module is used for according to the next-hop network address of node, will give the next-hop network node corresponding with described address through the business data transmission of TRILL encapsulation and outer ETH encapsulation.
15. a transmission network node is applied to it is characterized in that in the multilink transparent interconnection TRILL network, comprising:
Receiving element is used for receiving the business datum through multilink transparent interconnection TRILL encapsulation and outer Ethernet ETH encapsulation that the upstream network node sends;
Resolution unit is used for described business datum through TRILL encapsulation and outer ETH encapsulation is resolved, and obtains the business datum through the TRILL encapsulation;
Query unit is for obtain the described business datum next-hop network of transmission address of node from described business data transmission path;
Encapsulation unit, be used for the business datum after the described process TRILL encapsulation being carried out certificate carrying out outer ETH encapsulation according to outer virtual LAN VLAN corresponding to described business datum, described business datum next-hop network address of node and described business datum outlet network node;
Transmitting element is used for according to described next-hop network address of node, and described business datum through TRILL encapsulation and ETH encapsulation is sent to described next-hop network node.
16. transmission network node according to claim 15 is characterized in that, also comprises:
Setting unit is used for the port at described transmission network node, according to the data parameters of business datum outside VLAN corresponding to dissimilar business datum is set;
Grouped element divides into groups for the network node that will belong to same outside VLAN;
The link establishment unit is used between the network node adjacent in this group and sets up communication link;
Generation unit is used for the communication link set up according between predetermined route selection algorithm and the described adjacent network node, generates corresponding singlecast router and transmits with Multicast Routing and transmit.
17. an outlet network node is applied to it is characterized in that in the multilink transparent interconnection TRILL network, comprising:
Receiving element is used for receiving the business datum through multilink transparent interconnection TRILL encapsulation and outer Ethernet ETH encapsulation that upstream node sends;
The first resolution unit is used for described business datum through TRILL encapsulation and outer ETH encapsulation is resolved, and obtains the business datum through the TRILL encapsulation;
Query unit is for obtain the described business datum next-hop network of transmission address of node from described business data transmission path;
The second resolution unit is used for to resolving through the business datum of TRILL encapsulation, obtaining business datum when described query unit determines that described outlet network node is the final jump network node of the described business datum of transmission;
Transmitting element is used for described business datum is sent to corresponding subscriber equipment.
18. outlet network node according to claim 17 is characterized in that, also comprises:
Setting unit is used for the port at described outlet network node, according to the data parameters of business datum outside VLAN corresponding to dissimilar business datum is set;
Grouped element divides into groups for the network node that will belong to same outside VLAN;
The link establishment unit is used between the network node adjacent in this group and sets up communication link;
Generation unit is used for the communication link set up according between predetermined route selection algorithm and the described adjacent network node, generates corresponding singlecast router and transmits with Multicast Routing and transmit.
19. a business data transmission system is applied to it is characterized in that in the multilink transparent interconnection TRILL network, comprising:
Such as each described entrance network node among the claim 8-14; With
Such as claim 15 or 16 described transmission network nodes; With
Such as claim 17 or 18 described outlet network nodes.
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| CN113014648A (en) * | 2021-02-25 | 2021-06-22 | 北京邮电大学 | Small node group dynamic forwarding hybrid routing method and related equipment |
| CN114222209A (en) * | 2022-02-21 | 2022-03-22 | 北京国科天迅科技有限公司 | Method and device for realizing routing of hybrid protocol switching network and network switching equipment |
| CN117478707A (en) * | 2023-12-27 | 2024-01-30 | 天津数智物联科技有限公司 | Multi-target energy management data transmission method |
Also Published As
| Publication number | Publication date |
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| CN102957589B (en) | 2015-07-08 |
| WO2013026384A1 (en) | 2013-02-28 |
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