CN102355398A - MPLS (Multiple Protocol Label Switching) L3VPN (Lay3 Virtual Private Network) FRR (Fast Reroute) method and system - Google Patents
MPLS (Multiple Protocol Label Switching) L3VPN (Lay3 Virtual Private Network) FRR (Fast Reroute) method and system Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
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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
- H04L45/22—Alternate routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The invention relates to a VPN (Virtual Private Network) FRR (Fast Reroute) method and a device of an MPLS (Multiple Protocol Label Switching) L3VPN (Lay3 Virtual Private Network) system. The method comprises the following steps that: for an VPN FRR which is superimposed with a tunnel, the output port information of the next hop of transfer information of routers of main and standby paths is respectively set into an interior trunk ID (Identity), and the trunk ID is consistent with the ID of the tunnel protection group of a corresponding path; and when the tunnel protection group of the main/standby path of the VPN FRR switches, the trunk ID, DMAC (Direct Memory Access Channel) information and three-layer interface information in the next hop of transfer information of the corresponding path are updated. The device comprises a setting module and a switching module. According to the invention, the switching time is greatly reduced, the complexity of the system is reduced, and simultaneously, the large quantity of hardware resources are saved.
Description
Technical field
The present invention relates to MPLS (Multi-Protocol Label Switching; Multiprotocol label switching) technical field; More specifically; Relate to a kind of MPLS L3VPN (Lay3 Virtual Private Network; Three layer virtual private network) private virtual net (Virtual Private Network; VPN) quick heavy-route (Fast Reroute, FRR) method and system.
Background technology
MPLS L3VPN is service provider (Service Provider; SP) a kind of in the vpn solution based on Provider Edge (Provider Edge; PE) the L3VPN technology of equipment; It uses BGP (Border Gateway Protocol; Border Gateway Protocol) issue VPN route on service provider backbone uses MPLS on service provider backbone, to transmit the VPN message.
MPLS L3VPN networking mode is flexible, extensibility good, and can support MPLS QoS (Quality of Service, service quality) and MPLS TE (Traffic Engineering, traffic engineering) easily, therefore obtains increasing application.
MPLS L3VPN model is made up of following three parts:
CE (Customer Edge) equipment: user network boundary device has interface directly continuous with SP (Service Provider, service provider); CE can be equipment or switch, also can be a main frame.CE " perception " does not need to support MPLS less than the existence of VPN yet;
PE (Provider Edge) equipment: Provider Edge equipment is the edge device of service provider network, directly links to each other with user's CE.In the MPLS network, all occur on the PE to all processing of VPN;
P (Provider) equipment: the backbone equipment in the service provider network does not directly link to each other with CE.The P device just will possess basic MPLS transfer capability.
Wherein, the division of CE and PE mainly is the range of management according to SP and user, and CE and PE are the borders of both range of managements.CE equipment is a router normally, when CE with after the PE that directly links to each other sets up syntople, CE is distributed to PE to the VPN route of this website, and acquires the route of far-end VPN from PE.Use the BGP/IGP exchanging routing information between CE and the PE, also can use static routing.
After PE acquires the local VPN routing iinformation of CE from CE, through BGP and other PE switched vpc N routing iinformation.Pe router is only safeguarded the routing iinformation of the VPN that directly links to each other with it, all the VPN routes in the not maintenance service provider network.
The P router only is maintained into the route of PE, need not understand any VPN routing iinformation.
When transmission VPN flow on the MPLS backbone network, entry PE is as Ingress (inlet) LSR (Label Switch Router, LSR), and outlet PE is as Egress (outlet) LSR, and P router then conduct is Transit (forwarding) LSR.
Forwarding reliability consideration based on MPLS L3VPN service message; All can adopt the mode of VPN FRR stack tunnel FRR (tunnel FRR possibly be TE FRR or LDP (Label Distribution Protocol, tag distribution protocol) FRR) to carry out networking in the general networking.As shown in Figure 1, be the networking sketch map of the MPLS L3VPN VPN FRR stack tunnel FRR of classics, comprise 2 CE equipment, be respectively CE1, CE2,4 P equipment are respectively P1, P2, P3, P4, and 3 PE equipment, are respectively PE1, PE2, PE3; Wherein, the path that CE1 goes to CE2 has four, is respectively: PE1-＞P1-＞PE2, PE1-＞P2-＞PE2, PE1-＞P3-＞PE3, PE1-＞P4-＞PE3; The path of PE1-＞PE2 and the path of PE1-＞PE3 constitute VPN FRR; Wherein the path of PE1-＞PE2 is main; PE1-＞P1-＞PE2 and PE1-＞P2-＞PE2 constitutes tunnel FRR, and the path of PE1-＞PE3 is for being equipped with, and PE1-＞P3-＞PE3 and PE1-＞P4-＞PE3 also constitutes tunnel FRR.
The service message of coming in from CE equipment need arrive PE2 through PE1; Two paths are arranged: operating path PE1-＞P1-＞PE2 and protection path P E1-＞P2-＞PE2; When detecting operating path problem is arranged, PE1 need switch to service message the protection path and transmit.
Fig. 2 is for getting into the up handling process sketch map of the message of PE1 equipment among Fig. 1; ASIC (Application Specific Integrated Circuit has been described; Application-specific integrated circuit (ASIC)) handling process of the L3VPN of chip; Promptly get into the message of PE1 equipment from CE equipment; Need carry out 3 layers of VPN transmits; Through route querying, obtain next redirect photos and sending messages and transmit.
Fig. 3 is the refinement diagram of next redirect photos and sending messages, and next redirect photos and sending messages mainly comprises two parts: first is an outbound port information; Second portion comprises DMAC (Destination Media Access Control, purpose media interviews control) information, through the DMAC information index, can find the DMAC of next-hop device; Pseudo line tag information, it is every label of every route or the every label of every VPN instance, can search through the pseudo line tag information index to obtain; And three layer interface information, comprising SMAC (source MAC), VLAN (Virtual Local Area Network, VLAN) ID (identify label number) and outer MPLS label can be searched through three layer interface information indexs and to obtain.
Fig. 4 shows existing MPLS L3VPN VPN FRR sketch map; When tradition MPLS L3VPN VPN FRR switches; At first create all possible next redirect and deliver (having 4 at most); When needs switch; Again according to protecting tunnel group state and final next jumping of transmitting of VPN protection group state decision; When VPN protection group state changes or protecting tunnel group state when changing; Need all need judge whether to switch; Thereby when having expended next a large amount of jumping resources, make that the complexity of flow process is also bigger.
Summary of the invention
The objective of the invention is, the VPN FRR method and the device of a kind of MPLS L3VPN system is provided, flow process is complicated when optimizing that VPN FRR switches in the prior art, the problem that resource cost is big.
The invention provides the VPN FRR method of a kind of MPLS L3VPN system; Said method is for the VPN FRR that is superimposed with tunnel FRR; The outbound port information of next of its active and standby path being jumped routing forwarding information all is set to inner trunk ID, and makes above-mentioned trunk ID consistent with the ID of the protecting tunnel group of respective path;
When the protecting tunnel group in the active/standby path of above-mentioned VPN FRR is switched, then upgrade trunk ID (identify label number), DMAC information and three layer interface information in next redirect photos and sending messages of respective paths.
Preferably, when the protecting tunnel group in the active/standby path of above-mentioned VPN FRR was switched, trunk ID, DMAC information and the three layer interface information steps then upgraded in next redirect photos and sending messages of respective paths specifically comprised:
When the protecting tunnel group of the main path of above-mentioned VPN FRR switches to main tunnel FRR, then upgrade trunk ID, DMAC information and three layer interface information in next redirect photos and sending messages of main path of above-mentioned VPN FRR;
When the protecting tunnel group of the main path of above-mentioned VPN FRR switches to fully tunnel FRR, then upgrade trunk ID, DMAC information and three layer interface information in next redirect photos and sending messages of main path of above-mentioned VPN FRR;
When the protecting tunnel group that is equipped with the path of above-mentioned VPN FRR switches to main tunnel FRR, then upgrade trunk ID, DMAC information and three layer interface information in next redirect photos and sending messages that is equipped with the path of above-mentioned VPN FRR;
When the protecting tunnel group that is equipped with the path of above-mentioned VPN FRR switches to fully tunnel FRR, then upgrade trunk ID, DMAC information and three layer interface information in next redirect photos and sending messages that is equipped with the path of above-mentioned VPN FRR.
Preferably, when the protecting tunnel group of the main path of above-mentioned VPN FRR switched to main tunnel FRR, the trunk ID in next redirect photos and sending messages of the main path of above-mentioned renewal VPN FRR, DMAC information and three layer interface information steps were specially:
Trunk ID in next redirect photos and sending messages of above-mentioned main path is changed to the outbound port number of above-mentioned main tunnel FRR, is the DMAC of the P equipment that is connected with the outbound port of above-mentioned main tunnel FRR with the DMAC information change in next redirect photos and sending messages of above-mentioned master; And upgrade three layer interface information in next redirect photos and sending messages of above-mentioned master, make next jumping of master of all VPN FRR all point to this three layer interfaces index.
Preferably, when the protecting tunnel group of the main path of above-mentioned VPN FRR switched to fully tunnel FRR, the trunk ID in next redirect photos and sending messages of the main path of above-mentioned renewal VPN FRR, DMAC information and three layer interface information were specially:
Trunk ID in next redirect photos and sending messages of above-mentioned main path is changed to the above-mentioned outbound port that is equipped with tunnel FRR number, be the DMAC of the P equipment that is connected with the above-mentioned outbound port of tunnel FRR fully with the DMAC information change in next redirect photos and sending messages of above-mentioned master; And upgrade three layer interface information in next redirect photos and sending messages of above-mentioned master, make next jumping of master of all VPN FRR all point to this three layer interfaces index.
Preferably, when the protecting tunnel group that is equipped with the path of above-mentioned VPN FRR switched to main tunnel FRR, trunk ID, DMAC information and three layer interface information in next redirect photos and sending messages that is equipped with the path of above-mentioned renewal VPN FRR were specially:
Trunk ID in above-mentioned next redirect photos and sending messages that is equipped with the path is changed to the outbound port number of above-mentioned main tunnel FRR, the above-mentioned DMAC information change of getting ready in the redirect photos and sending messages is the DMAC of the P equipment that is connected with the outbound port of above-mentioned main tunnel FRR; And upgrade above-mentioned three layer interface information of getting ready in the redirect photos and sending messages, make the jumping of getting ready of all VPN FRR all point to this three layer interfaces index.
Preferably, when the protecting tunnel group that is equipped with the path of above-mentioned VPN FRR switched to fully tunnel FRR, trunk ID, DMAC information and three layer interface information in next redirect photos and sending messages that is equipped with the path of above-mentioned renewal VPN FRR were specially:
Trunk ID in above-mentioned next redirect photos and sending messages that is equipped with the path is changed to the outbound port number of the above-mentioned tunnel FRR of being equipped with, the DMAC of the P equipment that the above-mentioned DMAC information change of getting ready in the redirect photos and sending messages is connected for the outbound port with the above-mentioned tunnel FRR of being equipped with; And upgrade above-mentioned three layer interface information of getting ready in the redirect photos and sending messages, make the jumping of getting ready of all VPN FRR all point to this three layer interfaces index.
Preferably, in the said method,
When above-mentioned VPN FRR switched to main path, then corresponding route was directly switch to main next jumping;
When above-mentioned VPN FRR switched to fully the path, then corresponding route is directly switch to got a jumping ready.
The present invention further provides the VPN FRR device of a kind of MPLS L3VPN system, and said apparatus comprises module and handover module are set,
The above-mentioned module that is provided with, the outbound port information setting that is used for next of active and standby path that is superimposed with the VPN FRR of tunnel FRR jumped routing forwarding information becomes inner trunk ID, and makes above-mentioned trunk ID consistent with the ID of the protecting tunnel group in above-mentioned active and standby path;
Above-mentioned handover module is used for when the protecting tunnel group in the active/standby path of VPN FRR is switched, and upgrades trunk ID, DMAC information and three layer interface information in next redirect photos and sending messages of respective paths.
Preferably, above-mentioned handover module comprises judges submodule, updating submodule and path switching submodule,
Above-mentioned judgement submodule be used to judge the current VPN of switching to FRR active and standby path switching, or the protecting tunnel group is switched; When switching to the active and standby path of VPN FRR and switching, judge further that current switching is that main path switches current, still be equipped with the path and switch, judged result is sent to above-mentioned path switching submodule; Current when switching to the protecting tunnel group and switching; Further judge it is the protecting tunnel group switching of main path, the protecting tunnel group that still is equipped with the path is switched, and when the protecting tunnel group that is main path is switched; Judgement is to switch to main tunnel FRR, still switches to tunnel FRR fully; Be that judgement is to switch to main tunnel FRR, still switches to tunnel FRR fully, and judged result is sent to above-mentioned updating submodule when being equipped with the protecting tunnel group switching in path;
Above-mentioned updating submodule is used for according to the judged result received, and next that upgrade above-mentioned respective paths jumped trunk ID, DMAC information and the three layer interface information in next redirect photos and sending messages of routing forwarding information;
Above-mentioned path switching submodule is used for according to the judged result of receiving, corresponding route is switched to main next jumping, perhaps gets a jumping ready.
Preferably; Above-mentioned updating submodule; Also being used in above-mentioned judged result is that the protecting tunnel group of the main path of VPN FRR is when switching to main tunnel FRR; Trunk ID in next redirect photos and sending messages of above-mentioned main path is changed to the outbound port number of above-mentioned main tunnel FRR, is the DMAC of the P equipment that is connected with the outbound port of above-mentioned main tunnel FRR with the DMAC information change in next redirect photos and sending messages of above-mentioned master; And upgrade three layer interface information in next redirect photos and sending messages of above-mentioned master, make next jumping of master of all VPN FRR all point to this three layer interfaces index;
In above-mentioned judged result is that the protecting tunnel group of the main path of VPN FRR is when switching to fully tunnel FRR; Trunk ID in next redirect photos and sending messages of above-mentioned main path is changed to the above-mentioned outbound port that is equipped with tunnel FRR number, be the DMAC of the P equipment that is connected with the above-mentioned outbound port of tunnel FRR fully with the DMAC information change in next redirect photos and sending messages of above-mentioned master; And upgrade three layer interface information in next redirect photos and sending messages of above-mentioned master, make next jumping of master of all VPN FRR all point to this three layer interfaces index;
In above-mentioned judged result is that the protecting tunnel group that is equipped with the path of VPN FRR is when switching to main tunnel FRR; Trunk ID in above-mentioned next redirect photos and sending messages that is equipped with the path is changed to the outbound port number of above-mentioned main tunnel FRR, the above-mentioned DMAC information change of getting ready in the redirect photos and sending messages is the DMAC of the P equipment that is connected with the outbound port of above-mentioned main tunnel FRR; And upgrade above-mentioned three layer interface information of getting ready in the redirect photos and sending messages, make the jumping of getting ready of all VPN FRR all point to this three layer interfaces index;
In above-mentioned judged result is that the protecting tunnel group that is equipped with the path of VPN FRR is when switching to fully tunnel FRR; Trunk ID in above-mentioned next redirect photos and sending messages that is equipped with the path is changed to the outbound port number of the above-mentioned tunnel FRR of being equipped with, the DMAC of the P equipment that the above-mentioned DMAC information change of getting ready in the redirect photos and sending messages is connected for the outbound port with the above-mentioned tunnel FRR of being equipped with; And upgrade above-mentioned three layer interface information of getting ready in the redirect photos and sending messages, make the jumping of getting ready of all VPN FRR all point to this three layer interfaces index.
The invention enables the professional quantity of tunnel FRR switching time and L3VPN irrelevant; Realize separating of tunnel FRR switching and VPN FRR switching simultaneously, reduced switching time widely, reduced system complexity; Practice thrift a large amount of hardware resources simultaneously, thereby practiced thrift cost.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes a part of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, does not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the networking sketch map of the MPLS L3VPN VPN FRR stack tunnel FRR of classics;
Fig. 2 is the up handling process sketch map that gets into the message of PE1 equipment among Fig. 1
Fig. 3 is the refinement diagram of next redirect photos and sending messages;
Fig. 4 is existing MPLS L3VPN VPN FRR sketch map;
Fig. 5 is the flow chart of the VPN FRR method preferred embodiment of MPLS L3VPN of the present invention system;
Fig. 6 is the theory diagram of the VPN FRR device preferred embodiment of MPLS L3VPN of the present invention system.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer, clear,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
With reference to figure 3, behind the tunnel FRR, transmit the next skip list item and have only 3 places to need to change in fact, be respectively: physics outbound port information, three layer interface information and DMAC information.
Wherein, DMAC information and three layer interface information are that all professional corresponding next jumpings of forwarding index same multiplexing list item above three layer interfaces, can direct modification, and irrelevant with number of routes; But each next jumping of the outbound port informational needs of each next jumping is revised one by one.
Based on above characteristic; The present invention adopts inner trunk method to realize that the port of corresponding next jumping of all relevant routes of tunnel switches; Corresponding next jumping is in protecting tunnel group the inside; The protecting tunnel group is corresponding one by one with trunkID; When needs carry out the switching of protecting tunnel group, switch just passable as long as carry out corresponding inside trunk port.
As shown in Figure 5; It is the VPN FRR method flow diagram of MPLS L3VPN of the present invention system; Present embodiment hypothesis is superimposed with the outbound port information of active and standby next redirect photos and sending messages of the VPN FRR of tunnel FRR and all has been arranged to inner trunk ID, and above-mentioned trunk ID is consistent with the ID of the protecting tunnel group of respective path; Such as, the ID of the protection tunnel group of main path is 1, then the trunk ID of next redirect photos and sending messages of main path is trunk 1.Supposing the system needs to switch, and present embodiment specifically may further comprise the steps:
Step S001: judge current switching type, if VPN FRR active and standby path switching, then execution in step S009; If the protecting tunnel group in the active/standby path of VPN FRR is switched, then execution in step S002;
Step S002: judge the protecting tunnel group switching of the main path that above-mentioned protecting tunnel group switching is VPN FRR; Still the protecting tunnel group that is equipped with the path is switched, if the switching of the protecting tunnel group of main path, then execution in step S003; Switch if be equipped with the protecting tunnel group in path, then execution in step S006;
Step S003: the protecting tunnel group of judging the main path of above-mentioned VPN FRR is to switch to main tunnel FRR, still switches to tunnel FRR fully, if switch to main tunnel FRR, then execution in step S004 is equipped with tunnel FRR, then execution in step S005 if switch to;
Step S004: the trunk ID in next redirect photos and sending messages of change main path, purpose media interviews control DMAC information and three layer interface information; Be specially: the trunk ID in next redirect photos and sending messages of the main path of above-mentioned VPN FRR is changed to the outbound port number of above-mentioned main tunnel FRR, is the DMAC of the P equipment that is connected with the outbound port of above-mentioned main tunnel FRR with the DMAC information change in next redirect photos and sending messages of above-mentioned master; And upgrade three layer interface information in next redirect photos and sending messages of above-mentioned master, and make next jumping of master of all VPN FRR all point to this three layer interfaces index, finish;
Step S005: the trunk ID in next redirect photos and sending messages of change main path, purpose media interviews control DMAC information and three layer interface information; Be specially: the trunk ID in next redirect photos and sending messages of the main path of above-mentioned VPN FRR is changed to the outbound port number of the above-mentioned tunnel FRR of being equipped with, be the DMAC of the P equipment that is connected with the above-mentioned outbound port of tunnel FRR fully with the DMAC information change in next redirect photos and sending messages of above-mentioned master; And upgrade three layer interface information in next redirect photos and sending messages of above-mentioned master, and make next jumping of master of all VPN FRR all point to this three layer interfaces index, finish;
Step S006: the protecting tunnel group that is equipped with the path of judging above-mentioned VPN FRR is to switch to main tunnel FRR, still switches to tunnel FRR fully, if switch to main tunnel FRR, then execution in step S007 is equipped with tunnel FRR, then execution in step S008 if switch to;
Step S007: the trunk ID in above-mentioned next redirect photos and sending messages that is equipped with the path is changed to the outbound port number of above-mentioned main tunnel FRR, the above-mentioned DMAC information change of getting ready in the redirect photos and sending messages is the DMAC of the P equipment that is connected with the outbound port of above-mentioned main tunnel FRR; And upgrade above-mentioned three layer interface information of getting ready in the redirect photos and sending messages, and make the jumping of getting ready of all VPN FRR all point to this three layer interfaces index, finish;
Step S008: the trunk ID in above-mentioned next redirect photos and sending messages that is equipped with the path is changed to the outbound port number of the above-mentioned tunnel FRR of being equipped with, the DMAC of the P equipment that the above-mentioned DMAC information change of getting ready in the redirect photos and sending messages is connected for the outbound port with the above-mentioned tunnel FRR of being equipped with; And upgrade above-mentioned three layer interface information of getting ready in the redirect photos and sending messages, and make the jumping of getting ready of all VPN FRR all point to this three layer interfaces index, finish;
Step S009: judge that VPN FRR switches to main path or switches to path fully, if switch to main path, execution in step S010 then; Be equipped with path, then execution in step S011 if switch to;
Step S010: switch to main next jumping, finish;
Step S011: switch to and get a jumping ready, finish.
As shown in Figure 1, the path that CE1 goes to CE2 has four, is respectively: PE1-＞P1-＞PE2, PE1-＞P2-＞PE2, PE1-＞P3-＞PE3, PE1-＞P4-＞PE3, suppose that the outbound port of the corresponding PE1 of this four paths is respectively 1,2,3,4.Among the figure; The path of PE1-＞PE2, PE1-＞PE3 constitutes VPN FRR; PE1-＞P1-＞PE2, PE1-＞P2-＞PE2, PE1-＞P3-＞PE3, PE1-＞P4-＞PE3 constitute tunnel FRR; Suppose that PE1-＞PE2 is a main path; PE1-＞P1-＞PE2 is main tunnel FRR; PE1-＞P2-＞PE2 is for being equipped with tunnel FRR; And the ID of protecting tunnel group is 1; PE1-＞PE3's is to be equipped with the path; PE1-＞P3-＞PE3 is main tunnel FRR; PE1-＞P4-＞PE3 is equipped with tunnel FRR, and the ID of protecting tunnel group is 2
The tunnel FRR because VPN FRR has superposeed simultaneously; So with the outbound port information setting in next redirect photos and sending messages of master of VPN FRR is trunk 1 (corresponding protecting tunnel group 1); With the outbound port information setting of getting ready in the redirect photos and sending messages of VPN FRR is trunk 2 (corresponding protecting tunnel group 2); According to method of the present invention
1, if protecting tunnel group 1 switches to main tunnel FRR; Then only need the port of trunk 1 is changed to 1; With the DMAC information change of next redirect photos and sending messages of main path is the DMAC of P1; Change three layer interface information of next redirect photos and sending messages of main path simultaneously, make next jumping of master of all VPN FRR all point to this three layer interfaces index;
2, if protecting tunnel group 1 switches to tunnel FRR fully; Then only need the port of trunk 1 is changed to 2; With the DMAC information change of next redirect photos and sending messages of main path is the DMAC of P2; Change three layer interface information of next redirect photos and sending messages of main path simultaneously, make next jumping of master of all VPN FRR all point to this three layer interfaces index;
3, if protecting tunnel group 2 switches to main tunnel FRR; Then only need the port of trunk 2 is changed to 3; With the DMAC information change that is equipped with next redirect photos and sending messages in path is the DMAC of P3; Change simultaneously is equipped with three layer interface information of next redirect photos and sending messages in path, makes the jumping of getting ready of all VPN FRR all point to this three layer interfaces index;
4, if protecting tunnel group 2 switches to tunnel FRR fully; Then only need the port of trunk 2 is changed to 4; With the DMAC information change that is equipped with next redirect photos and sending messages in path is the DMAC of P4; Change simultaneously is equipped with three layer interface information of next redirect photos and sending messages in path, makes the jumping of getting ready of all VPN FRR all point to this three layer interfaces index;
5, if the VPN FRR of certain bar route switches to main path, then this route is switched to corresponding next jumping of master;
6,, then this route is switched the corresponding jumping of getting ready if the VPN FRR of certain bar route switches to path fully.
The scene of above-mentioned 1-4 belongs to the protecting tunnel group to be switched, and only needs to switch 3 table entries, irrelevant with switching time and route entry; The scene of 5-6 belongs to the active and standby path of route to be switched, and behind employing the present invention, a route only need be switched once, need not to be concerned about related protecting tunnel group state, and switching flow is simple.
As shown in Figure 6, be the theory diagram of the VPN FRR device of MPLS L3VPN of the present invention system, present embodiment comprises module 01 and handover module 02 is set, handover module 02 comprises judges submodule 21, updating submodule 22 and path switching submodule 23,
Updating submodule 22; Be used for according to the judged result of receiving; Next that upgrade above-mentioned respective paths jumped the trunk ID in next redirect photos and sending messages of routing forwarding information; DMAC information and three layer interface information; Be specially: in above-mentioned judged result is that the protecting tunnel group of the main path of VPN FRR is when switching to main tunnel FRR; Trunk ID in next redirect photos and sending messages of above-mentioned main path is changed to the outbound port number of above-mentioned main tunnel FRR, is the DMAC of the P equipment that is connected with the outbound port of above-mentioned main tunnel FRR with the DMAC information change in next redirect photos and sending messages of above-mentioned master; And upgrade three layer interface information in next redirect photos and sending messages of above-mentioned master, make next jumping of master of all VPN FRR all point to this three layer interfaces index; In above-mentioned judged result is that the protecting tunnel group of the main path of VPN FRR is when switching to fully tunnel FRR; Trunk ID in next redirect photos and sending messages of above-mentioned main path is changed to the above-mentioned outbound port that is equipped with tunnel FRR number, be the DMAC of the P equipment that is connected with the above-mentioned outbound port of tunnel FRR fully with the DMAC information change in next redirect photos and sending messages of above-mentioned master; And upgrade three layer interface information in next redirect photos and sending messages of above-mentioned master, make next jumping of master of all VPN FRR all point to this three layer interfaces index; In above-mentioned judged result is that the protecting tunnel group that is equipped with the path of VPN FRR is when switching to main tunnel FRR; Trunk ID in above-mentioned next redirect photos and sending messages that is equipped with the path is changed to the outbound port number of above-mentioned main tunnel FRR, the above-mentioned DMAC information change of getting ready in the redirect photos and sending messages is the DMAC of the P equipment that is connected with the outbound port of above-mentioned main tunnel FRR; And upgrade above-mentioned three layer interface information of getting ready in the redirect photos and sending messages, make the jumping of getting ready of all VPN FRR all point to this three layer interfaces index; In above-mentioned judged result is that the protecting tunnel group that is equipped with the path of VPN FRR is when switching to fully tunnel FRR; Trunk ID in above-mentioned next redirect photos and sending messages that is equipped with the path is changed to the outbound port number of the above-mentioned tunnel FRR of being equipped with, the DMAC of the P equipment that the above-mentioned DMAC information change of getting ready in the redirect photos and sending messages is connected for the outbound port with the above-mentioned tunnel FRR of being equipped with; And upgrade above-mentioned three layer interface information of getting ready in the redirect photos and sending messages, make the jumping of getting ready of all VPN FRR all point to this three layer interfaces index;
Above-mentioned explanation illustrates and has described the preferred embodiments of the present invention; But as previously mentioned; Be to be understood that the present invention is not limited to the form that this paper discloses; Should not regard eliminating as to other embodiment; And can be used for various other combinations, modification and environment; And can in invention contemplated scope described herein, change through the technology or the knowledge of above-mentioned instruction or association area.And change that those skilled in the art carried out and variation do not break away from the spirit and scope of the present invention, then all should be in the protection range of accompanying claims of the present invention.
Claims (10)
1. the quick heavy-route FRR method of private virtual net VPN of three layers of private virtual net of multiprotocol label switching MPLS L3VPN system; It is characterized in that; Said method is for the VPN FRR that is superimposed with tunnel FRR; The outbound port information of next of its active and standby path being jumped routing forwarding information all is set to inner trunk ID, and makes said trunk ID consistent with the ID of the protecting tunnel group of respective path;
When the protecting tunnel group in the active/standby path of said VPN FRR is switched, then upgrade trunk ID, purpose media interviews control DMAC information and three layer interface information in next redirect photos and sending messages of respective paths.
2. method according to claim 1; It is characterized in that; When the protecting tunnel group in the active/standby path of said VPN FRR was switched, trunk ID, DMAC information and the three layer interface information steps then upgraded in next redirect photos and sending messages of respective paths specifically comprised:
When the protecting tunnel group of the main path of said VPN FRR switches to main tunnel FRR, then upgrade trunk ID, DMAC information and three layer interface information in next redirect photos and sending messages of main path of said VPN FRR;
When the protecting tunnel group of the main path of said VPN FRR switches to fully tunnel FRR, then upgrade trunk ID, DMAC information and three layer interface information in next redirect photos and sending messages of main path of said VPN FRR;
When the protecting tunnel group that is equipped with the path of said VPN FRR switches to main tunnel FRR, then upgrade trunk ID, DMAC information and three layer interface information in next redirect photos and sending messages that is equipped with the path of said VPN FRR;
When the protecting tunnel group that is equipped with the path of said VPN FRR switches to fully tunnel FRR, then upgrade trunk ID, DMAC information and three layer interface information in next redirect photos and sending messages that is equipped with the path of said VPN FRR.
3. method according to claim 2; It is characterized in that; When the protecting tunnel group of the main path of said VPN FRR switched to main tunnel FRR, the trunk ID in next redirect photos and sending messages of the main path of said renewal VPN FRR, DMAC information and three layer interface information steps were specially:
Trunk ID in next redirect photos and sending messages of said main path is changed to the outbound port number of said main tunnel FRR, is the DMAC of the P equipment that is connected with the outbound port of said main tunnel FRR with the DMAC information change in next redirect photos and sending messages of said master; And upgrade three layer interface information in next redirect photos and sending messages of said master, make next jumping of master of all VPN FRR all point to this three layer interfaces index.
4. method according to claim 2; It is characterized in that; When the protecting tunnel group of the main path of said VPN FRR switched to fully tunnel FRR, the trunk ID in next redirect photos and sending messages of the main path of said renewal VPN FRR, DMAC information and three layer interface information were specially:
Trunk ID in next redirect photos and sending messages of said main path is changed to the said outbound port that is equipped with tunnel FRR number, be the DMAC of the P equipment that is connected with the said outbound port of tunnel FRR fully with the DMAC information change in next redirect photos and sending messages of said master; And upgrade three layer interface information in next redirect photos and sending messages of said master, make next jumping of master of all VPN FRR all point to this three layer interfaces index.
5. method according to claim 2; It is characterized in that; When the protecting tunnel group that is equipped with the path of said VPN FRR switched to main tunnel FRR, trunk ID, DMAC information and three layer interface information in next redirect photos and sending messages that is equipped with the path of said renewal VPN FRR were specially:
Trunk ID in said next redirect photos and sending messages that is equipped with the path is changed to the outbound port number of said main tunnel FRR, the said DMAC information change of getting ready in the redirect photos and sending messages is the DMAC of the P equipment that is connected with the outbound port of said main tunnel FRR; And upgrade said three layer interface information of getting ready in the redirect photos and sending messages, make the jumping of getting ready of all VPN FRR all point to this three layer interfaces index.
6. method according to claim 2; It is characterized in that; When the protecting tunnel group that is equipped with the path of said VPN FRR switched to fully tunnel FRR, trunk ID, DMAC information and three layer interface information in next redirect photos and sending messages that is equipped with the path of said renewal VPN FRR were specially:
Trunk ID in said next redirect photos and sending messages that is equipped with the path is changed to the outbound port number of the said tunnel FRR of being equipped with, the DMAC of the P equipment that the said DMAC information change of getting ready in the redirect photos and sending messages is connected for the outbound port with the said tunnel FRR of being equipped with; And upgrade said three layer interface information of getting ready in the redirect photos and sending messages, make the jumping of getting ready of all VPN FRR all point to this three layer interfaces index.
7. method according to claim 1 and 2 is characterized in that, in the said method,
When said VPN FRR switched to main path, then corresponding route was directly switch to main next jumping;
When said VPN FRR switched to fully the path, then corresponding route is directly switch to got a jumping ready.
8. the VPN FRR device of a MPLS L3VPN system is characterized in that, said device comprises module and handover module are set,
The said module that is provided with, the outbound port information setting that is used for next of active and standby path that is superimposed with the VPN FRR of tunnel FRR jumped routing forwarding information becomes inner trunk ID, and makes said trunk ID consistent with the ID of the protecting tunnel group in said active and standby path;
Said handover module is used for when the protecting tunnel group in the active/standby path of VPN FRR is switched, and upgrades trunk ID, DMAC information and three layer interface information in next redirect photos and sending messages of respective paths.
9. device according to claim 8 is characterized in that, said handover module comprises judges submodule, updating submodule and path switching submodule,
Said judgement submodule be used to judge the current VPN of switching to FRR active and standby path switching, or the protecting tunnel group is switched; When switching to the active and standby path of VPN FRR and switching, judge further that current switching is that main path switches current, still be equipped with the path and switch, judged result is sent to said path switching submodule; Current when switching to the protecting tunnel group and switching; Further judge it is the protecting tunnel group switching of main path, the protecting tunnel group that still is equipped with the path is switched, and when the protecting tunnel group that is main path is switched; Judgement is to switch to main tunnel FRR, still switches to tunnel FRR fully; Be that judgement is to switch to main tunnel FRR, still switches to tunnel FRR fully, and judged result is sent to said updating submodule when being equipped with the protecting tunnel group switching in path;
Said updating submodule is used for according to the judged result received, and next that upgrade said respective paths jumped trunk ID, DMAC information and the three layer interface information in next redirect photos and sending messages of routing forwarding information;
Said path switching submodule is used for according to the judged result of receiving, corresponding route is switched to main next jumping, perhaps gets a jumping ready.
10. device according to claim 9 is characterized in that,
Said updating submodule; Also being used in said judged result is that the protecting tunnel group of the main path of VPN FRR is when switching to main tunnel FRR; Trunk ID in next redirect photos and sending messages of said main path is changed to the outbound port number of said main tunnel FRR, is the DMAC of the P equipment that is connected with the outbound port of said main tunnel FRR with the DMAC information change in next redirect photos and sending messages of said master; And upgrade three layer interface information in next redirect photos and sending messages of said master, make next jumping of master of all VPN FRR all point to this three layer interfaces index;
In said judged result is that the protecting tunnel group of the main path of VPN FRR is when switching to fully tunnel FRR; Trunk ID in next redirect photos and sending messages of said main path is changed to the said outbound port that is equipped with tunnel FRR number, be the DMAC of the P equipment that is connected with the said outbound port of tunnel FRR fully with the DMAC information change in next redirect photos and sending messages of said master; And upgrade three layer interface information in next redirect photos and sending messages of said master, make next jumping of master of all VPN FRR all point to this three layer interfaces index;
In said judged result is that the protecting tunnel group that is equipped with the path of VPN FRR is when switching to main tunnel FRR; Trunk ID in said next redirect photos and sending messages that is equipped with the path is changed to the outbound port number of said main tunnel FRR, the said DMAC information change of getting ready in the redirect photos and sending messages is the DMAC of the P equipment that is connected with the outbound port of said main tunnel FRR; And upgrade said three layer interface information of getting ready in the redirect photos and sending messages, make the jumping of getting ready of all VPN FRR all point to this three layer interfaces index;
In said judged result is that the protecting tunnel group that is equipped with the path of VPN FRR is when switching to fully tunnel FRR; Trunk ID in said next redirect photos and sending messages that is equipped with the path is changed to the outbound port number of the said tunnel FRR of being equipped with, the DMAC of the P equipment that the said DMAC information change of getting ready in the redirect photos and sending messages is connected for the outbound port with the said tunnel FRR of being equipped with; And upgrade said three layer interface information of getting ready in the redirect photos and sending messages, make the jumping of getting ready of all VPN FRR all point to this three layer interfaces index.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007039540A2 (en) * | 2005-09-30 | 2007-04-12 | Nokia Siemens Networks Gmbh & Co. Kg | Fast reroute in a multiprotocol label switching network |
| CN101820395A (en) * | 2010-05-19 | 2010-09-01 | 杭州华三通信技术有限公司 | Routing information configuration and private network label addition method and device based on MPLS (Multiple Protocol Label Switching) |
| CN101877677A (en) * | 2010-06-25 | 2010-11-03 | 中兴通讯股份有限公司 | Tunnel switching method and system for multi-protocol label switching services |
| CN102035740A (en) * | 2010-12-17 | 2011-04-27 | 中兴通讯股份有限公司 | Multi-protocol label switching layer-3 virtual private network fast reroute (MPLSL3VPNFRR) method and system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101030917B (en) * | 2007-03-31 | 2010-09-15 | 华为技术有限公司 | Method and apparatus for realizing MPLS TE on VLAN interface |
| CN102355398B (en) * | 2011-06-22 | 2017-10-27 | 南京中兴软件有限责任公司 | MPLS L3VPN private virtual net fast rerouting methods and system |
-
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007039540A2 (en) * | 2005-09-30 | 2007-04-12 | Nokia Siemens Networks Gmbh & Co. Kg | Fast reroute in a multiprotocol label switching network |
| CN101820395A (en) * | 2010-05-19 | 2010-09-01 | 杭州华三通信技术有限公司 | Routing information configuration and private network label addition method and device based on MPLS (Multiple Protocol Label Switching) |
| CN101877677A (en) * | 2010-06-25 | 2010-11-03 | 中兴通讯股份有限公司 | Tunnel switching method and system for multi-protocol label switching services |
| CN102035740A (en) * | 2010-12-17 | 2011-04-27 | 中兴通讯股份有限公司 | Multi-protocol label switching layer-3 virtual private network fast reroute (MPLSL3VPNFRR) method and system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012174979A1 (en) * | 2011-06-22 | 2012-12-27 | 中兴通讯股份有限公司 | Fast rerouting method and system for mpls l3vpn private virtual network |
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