CN102291310A - Method and device for improving T-MPLS link ring network protection switching performance - Google Patents
Method and device for improving T-MPLS link ring network protection switching performance Download PDFInfo
- Publication number
- CN102291310A CN102291310A CN2011102482467A CN201110248246A CN102291310A CN 102291310 A CN102291310 A CN 102291310A CN 2011102482467 A CN2011102482467 A CN 2011102482467A CN 201110248246 A CN201110248246 A CN 201110248246A CN 102291310 A CN102291310 A CN 102291310A
- Authority
- CN
- China
- Prior art keywords
- network protection
- looped network
- tunnel
- router
- standby
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a method and a device for improving T-MPLS (Transport Multi-protocol Label Switching) link ring network protection switching performance. The method comprises the following steps of: a configuration step: configuring two standby forwarding paths when a router in a backbone network of a T-MPLS link is configured with a ring network protection group, wherein the two standby forwarding paths are respectively corresponding to a main channel and a standby channel; a switching step: selecting the two standby forwarding paths as current forwarding paths when the ring network protection group on the router is switched, wherein the traffic entering from the main channel is transmitted through the standby forwarding path corresponding to the main channel while the traffic entering from the standby channel is transmitted through the standby forwarding path corresponding to the standby channel. In the method, one standby forwarding path is added, so that the ring-shaped traffic is forwarded out by breaking through the ring in the moment of switching, and switching efficiency is improved.
Description
Technical field
The present invention relates to the communications field, the method and the device of particularly a kind of raising T-MPLS (Transmission-Multiprotocol Label Switching, the exchange of transmission-multi protocol label) link looped network protection performance of handoffs.
Background technology
T-MPLS is the standardized a kind of grouping tranmission techniques of International Telecommunications Union (ITU-T).T-MPLS data forwarding face is the subclass of MPLS, and its data are based on that the T-MPLS label transmits.T-MPLS is connection-oriented technology, and the application that is MPLS in transmitting net has increased the function that the connection-oriented OAM that transmits style and protection recover, and with ASON/GMPLS as its control plane.
The T-MPLS Packet Transport Network is a transfer canal of setting up end-to-end connection-oriented grouping, will be transformed into connection-oriented network towards connectionless data network.This pipeline can be set up by the chain of command of network management system or intelligence.T-MPLS also satisfies the hierarchy of ITU-TG.805 definition, and the T-MPLS layer network can be divided into: medium layer, section layer tms, passage layers tmp (channel layer) and channel layer tmc (circuit layer).
ITU-T defines OAM(Operation Administration Maintenance): 1) performance monitoring and produce maintenance information, according to these information evaluation stability of network; 2) mode by regular inquiry detects network failure, produces various maintenances and warning information; 3) by dispatching or switch to other entity, bypass inefficacy entity guarantees the normal operation of network; 4) fault message is passed to management entity.The OAM effect comprises fault discovery, alarm, diagnosis, performance monitoring, protection.T-MPLS OAM runs in the T-MPLS territory, is the layering of branch territory, and each level can only detect the OAM fault of own aspect.T-MPLS OAM comprises the OAM of TMS layer, the OAM of tmp layer, the OAM of tmc layer.
The survivability of T-MPLS network realizes by network protection and recovery technology.T-MPLS supports that protection is switched end to end, and protection divides linear protection switching and looped network protection.
Looped network protection: a kind of protection type that the OAM by TMS detects.Node detection is to network failure on network, and the fault side gusset sends switching request by the APS agreement to adjacent node.When certain node detection to losing efficacy or receiving switching request, the general service that is forwarded to failure node will be switched to another direction (away from failure node).When network failure or the disappearance of APS agreement request, business will be back to original path.
When looped network protection group on the equipment is carried out order and is switched; because switch asynchronous; the protection group is switched or is returned the moment of cutting the inconsistent situation of protection group state occurs on two equipment of this protection group; promptly an end is being equipped with at a main end); and this moment, main/slave link was all normal, can cause a small amount of flow to form loop and produce certain line loss.
Summary of the invention
Main purpose of the present invention is to provide a kind of method and device of the T-MPLS of raising link looped network protection performance of handoffs, can improve switching efficiency so that forward at the broken ring of the flow that switches moment Cheng Huan.
In order to achieve the above object, the invention provides a kind of method of the T-MPLS of raising link looped network protection performance of handoffs, may further comprise the steps:
Configuration step: when disposing the looped network protection group on the router in the backbone network of T-MPLS link, dispose two standby forward-paths, these two standby forward-paths are distinguished corresponding main tunnels and are equipped with the tunnel;
Switch step: when looped network protection group on this router is switched; choose these two standby forward-paths as current forward-path; the flow of coming in from main tunnel is walked the standby forward-path corresponding with main tunnel, walks and the corresponding standby forward-path in tunnel fully from being equipped with the flow of coming in the tunnel.
The present invention also provides a kind of device of the T-MPLS of raising link looped network protection performance of handoffs, comprises configuration module and handover module, wherein,
Described configuration module is used for disposing two standby forward-paths when disposing the looped network protection group on the router of the backbone network of T-MPLS link, and these two standby forward-paths are corresponding main tunnels and be equipped with the tunnel respectively;
Described handover module; be used for when looped network protection group on this router is switched; choose these two standby forward-paths as current forward-path; the flow of coming in from main tunnel is walked the standby forward-path corresponding with main tunnel, walks and the corresponding standby forward-path in tunnel fully from being equipped with the flow of coming in the tunnel.
Compared with prior art, the method and the device of raising T-MPLS link looped network protection performance of handoffs of the present invention by increasing a standby forward-path, make to forward at the broken ring of the flow that switches moment Cheng Huan, improve switching efficiency.
Description of drawings
Fig. 1 is the flow chart of the method for raising T-MPLS link looped network protection performance of handoffs of the present invention;
Fig. 2 is the schematic diagram that existing T-MPLS link looped network protection changing method is applied to PE1;
Fig. 3 is the schematic diagram that the method for raising T-MPLS link looped network protection performance of handoffs of the present invention is applied to PE1;
Fig. 4 is the schematic diagram that existing T-MPLS link looped network protection changing method is applied to P1;
Fig. 5 is the schematic diagram that the method for raising T-MPLS link looped network protection performance of handoffs of the present invention is applied to P1;
Fig. 6 is that existing T-MPLS link looped network protection changing method is applied to the schematic diagram of P1 when P1 disposes two main tunnels and is equipped with the identical looped network protection group in tunnel;
Fig. 7 is that the method for raising T-MPLS link looped network protection performance of handoffs of the present invention is applied to the schematic diagram of P1 when P1 disposes two main tunnels and is equipped with the identical looped network protection group in tunnel;
Fig. 8 is the process chart of method of the present invention when two main tunnels being set on core router and being equipped with the identical looped network protection group in tunnel.
Embodiment
The method and the device of raising T-MPLS link looped network protection performance of handoffs of the present invention by increasing a standby forward-path, make to forward at the broken ring of the flow that switches moment Cheng Huan, improve switching efficiency.
As shown in Figure 1, the invention provides a kind of method of the T-MPLS of raising link looped network protection performance of handoffs, may further comprise the steps:
During enforcement, described router is edge router and/or core router.
During enforcement; when described router is a core router; and when disposing two main tunnels on this core router and being equipped with all identical looped network protection group in tunnel; whether also comprise determining step between described configuration step and described switch step: judging has the looped network protection group to switch on this core router; if then go to switch step, otherwise finish.
The present invention also provides a kind of device of the T-MPLS of raising link looped network protection performance of handoffs to comprise configuration module and handover module, wherein,
Described configuration module is used for disposing two standby forward-paths when disposing the looped network protection group on the router of the backbone network of T-MPLS link, and these two standby forward-paths are corresponding main tunnels and be equipped with the tunnel respectively;
Described handover module; be used for when looped network protection group on this router is switched; choose these two standby forward-paths as current forward-path; the flow of coming in from main tunnel is walked the standby forward-path corresponding with main tunnel, walks and the corresponding standby forward-path in tunnel fully from being equipped with the flow of coming in the tunnel.
During enforcement, described router is edge router and/or core router.
During enforcement, the device of raising T-MPLS link looped network protection performance of handoffs of the present invention also comprises judge module;
Described judge module; being used for working as described router is core router; and when disposing two main tunnels on this core router and being equipped with all identical looped network protection group in tunnel, judging whether have the looped network protection group to switch on this core router, if then start handover module.
PE (Provider Edge Router) is meant the edge router on the backbone network of T-MPLS link, links to each other with CE, mainly is responsible for the access of vpn service.
P (Provider Router) is meant the core router on the backbone network of T-MPLS link, mainly finishes route and forwarding capability fast.
For PE equipment (is example with PE1 among Fig. 2), former scheme is as follows:
1. when on PE1, not disposing the looped network protection group, two forward-paths (CE1-PE1-P1 and P1-PE1-P2) are arranged, corresponding main tunnel and tunnel respectively fully.When disposing looped network protection group group on PE1, configuration module adds a standby forward-path CE1-PE1-P2, and corresponding main forward-path is CE1-PE1-P1.
2.PE1 when last protection group was switched, handover module was chosen standby forward-path (CE1-PE1-P2) as current forward-path, and will be equipped with the tunnel and go into label label1 tag-drop is set, and made PE1 go up from being equipped with the flow of coming in the tunnel and abandoned.
PE1 goes up the looped network protection group and carries out order and switch in Fig. 2; or link occurs fault looped network protection group switches to fully back link-recovery just often between PE1 and P1; can switch or return the moment of cutting in the looped network protection group and the inconsistent situation of looped network protection group state on PE1 and the P1 (promptly an end is being led at an end fully) occur; and this moment, primary link and standby link were all normal; because going up the looped network protection group, PE1 this moment switches; handle as can be known this moment flow trend according to handover module and be (CE1-PE1-P2-PE2-P1-PE1) as shown in Figure 2; if handover module is not gone up PE1 from being equipped with the flow of coming in the tunnel and is abandoned, and can cause a small amount of flow to form loop and produce certain line loss.But handover module processing like this can cause switching or return meeting packet loss when cutting, and influences performance of handoffs.
For PE equipment (is example with PE1 among Fig. 3), the improvement project that the present invention takes is as follows:
1. when on PE1, not disposing the looped network protection group, two forward-path CE1-PE1-P1 and P1-PE1-P2 are arranged, corresponding main tunnel and tunnel respectively fully.When disposing looped network protection group group on PE1, configuration module adds two standby forward-path CE1-PE1-P2 and P1-PE1-P1, and corresponding respectively main forward-path is CE1-PE1-P1 and P1-PE1-P2.
When 2.PE1 last looped network protection group is switched; handover module is chosen standby forward-path (CE1-PE1-P2 and P1-PE1-P1) as current forward-path; promptly the flow of coming in from main tunnel is walked standby forward-path (CE1-PE1-P2), walks standby forward-path (P1-PE1-P1) from being equipped with the flow of coming in the tunnel.And different with former scheme be that the present invention can not go into label label1 tag-drop is set being equipped with the tunnel, will walk standby forward-path (P1-PE1-P1) from being equipped with the flow of coming in the tunnel like this.
When PE1 among Fig. 3 go up the looped network protection group being equipped with on the P1 looped network protection group leading; because going up the looped network protection group, PE1 this moment switches; handling as can be known at this moment according to handover module, flow moves towards (CE1-PE1-P2-PE2-P1-PE1-P1-PE2-CE2) as shown in Figure 3; handle so promptly can not form loop can packet loss yet, improve performance of handoffs greatly.
For P equipment (is example with P1 among Fig. 4), former scheme is as follows:
1. when on P1, not disposing the looped network protection group, two forward-paths (PE1-P1-PE2 and PE1-P1-PE1) are arranged, corresponding main tunnel and tunnel respectively fully.When disposing looped network protection group group on P1, configuration module adds a standby forward-path PE1-P1-PE1, and corresponding main forward-path is PE1-P1-PE2.
2.PE1 when last looped network protection group was switched, handover module was chosen standby forward-path (PE1-P1-PE1) as current forward-path, and will be equipped with the tunnel and go into label label1 tag-drop is set, and made P1 go up from being equipped with the flow of coming in the tunnel and abandoned.
P1 goes up the looped network protection group and carries out order and switch in Fig. 4; or link occurs fault looped network protection group switches to fully back link-recovery just often between P1 and PE2; can switch or return the moment of cutting in the looped network protection group and the inconsistent situation of looped network protection group state on P1 and the PE2 (promptly an end is being led at an end fully) occur; and this moment, primary link and standby link were all normal; because going up the looped network protection group, P1 this moment switches; handling as can be known at this moment according to handover module, flow moves towards (CE1-PE1-P1-PE1-P2-PE2-P1) as shown in Figure 4; if handover module is not gone up P1 from being equipped with the flow of coming in the tunnel and is abandoned, and can cause a small amount of flow to form loop and produce certain line loss.But the handover module setting abandons and can cause switching or return meeting packet loss when cutting, and influences performance of handoffs.
For P equipment (is example with P1 among Fig. 5), the improvement project that the present invention takes is as follows:
1. when on P1, not disposing the looped network protection group, two forward-path PE1-P1-PE2 and PE1-P1-PE1 are arranged, corresponding main tunnel and tunnel respectively fully.When disposing looped network protection group group on P1, configuration module adds two standby forward-path PE1-P1-PE1 and PE2-P1-PE2, and corresponding respectively main forward-path is PE1-P1-PE2 and PE1-P1-PE1.
When 2.P1 last looped network protection group is switched; handover module is chosen standby forward-path (PE1-P1-PE1 and PE2-P1-PE2) as current forward-path; promptly the flow of coming in from main tunnel is walked standby forward-path (PE1-P1-PE1), walks standby forward-path (PE2-P1-PE2) from being equipped with the flow of coming in the tunnel.And different with former scheme be, can not go into label label1 tag-drop is set being equipped with the tunnel, will walk standby forward-path (PE2-P1-PE2) from being equipped with the flow of coming in the tunnel like this.
When going up the looped network protection group, leading on the P1 P1 among Fig. 5 being equipped with; because going up the looped network protection group, P1 this moment switches; handling as can be known at this moment according to handover module, flow moves towards (CE1-PE1-P1-PE1-P2-PE2-P1-PE2-CE2) as shown in Figure 5; handle so promptly can not form loop can packet loss yet, improve performance of handoffs greatly.
For P equipment (with P1 among Fig. 6 is example, and P1 disposes two main tunnels and is equipped with the identical looped network protection group in tunnel), former scheme is as follows:
1. when on P1, not disposing the looped network protection group, two forward-paths (PE1-P1-PE2 and PE1-P1-PE1) are arranged, corresponding main tunnel and tunnel respectively fully.When on P1, disposing looped network protection group group1; configuration module adds a standby forward-path PE1-P1-PE1; corresponding main forward-path is PE1-P1-PE2; when on P1, disposing looped network protection group group2; configuration module adds a standby forward-path PE2-P1-PE2, and corresponding main forward-path is PE2-P1-PE1.
When 2.PE1 last looped network protection group group1 switches; handover module is chosen standby forward-path (PE1-P1-PE1) as current forward-path; promptly the flow of coming in from main tunnel is walked standby forward-path (CE1-PE1-P2); and will be equipped with the tunnel and go into label label1 tag-drop is set, and make P1 go up and abandon from being equipped with the flow of coming in the tunnel.
P1 goes up looped network protection group group1 and carries out order and switch in Fig. 6; or link occurs fault protection group switches to fully back link-recovery just often between P1 and PE2; can switch or return the moment of cutting in the looped network protection group and the inconsistent situation of looped network protection group state on P1 and the PE2 (promptly an end is being led at an end fully) occur; and this moment, main/slave link was all normal; because going up looped network protection group group1, P1 this moment switches; handling as can be known at this moment according to handover module, flow moves towards (CE1-PE1-P1-PE1-P2-PE2-P1) as shown in Figure 6; if handover module is not gone up P1 from being equipped with the flow of coming in the tunnel and is abandoned, and can cause a small amount of flow to form loop and produce certain line loss.But the handover module setting abandons and can cause switching or return meeting packet loss when cutting, and influences performance of handoffs.
For P equipment (with P1 among Fig. 7 is example, and P1 disposes two main tunnels and is equipped with the identical looped network protection group in tunnel), the improvement project that the present invention takes is as follows:
1. when on P1, not disposing the looped network protection group, two forward-path PE1-P1-PE2 and PE1-P1-PE1 are arranged, corresponding main tunnel and tunnel respectively fully.When on P1, disposing looped network protection group group1; configuration module adds a standby forward-path PE1-P1-PE1; corresponding main forward-path is PE1-P1-PE2; when on P1, disposing looped network protection group group2; configuration module adds a standby forward-path PE2-P1-PE2, and corresponding main forward-path is PE2-P1-PE1.
2. when confirming that P1 goes up group1 and is associated with group2 (main tunnel and the tunnel is all the same fully); group1 and group2 are handled as a looped network protection group; as long as one of them looped network protection group is switched; handover module will be chosen the standby forward-path (PE1-P1-PE1 and PE2-P1-PE2) of 2 looped network protection groups as current forward-path; promptly as long as one of them looped network protection group is being equipped with; then 2 looped network protection groups are all for having effect (as shown in Figure 7, group1 is being equipped with related group2 also for having effect).
When 3.P1 last looped network protection group group1 switches (this moment, looped network protection group group2 did not switch); handover module is chosen standby forward-path (PE1-P1-PE1 and PE2-P1-PE2) as current forward-path; promptly the flow of coming in from main tunnel is walked standby forward-path (PE1-P1-PE1), walks standby forward-path (PE2-P1-PE2) from being equipped with the flow of coming in the tunnel.And different with former scheme be, can not go into label label1 tag-drop is set being equipped with the tunnel, will walk standby forward-path (PE2-P1-PE2) from being equipped with the flow of coming in the tunnel like this.
When going up looped network protection group group1, leading on the P1 P1 among Fig. 7 being equipped with; because last 2 the protection groups of P1 this moment are associated and group1 switches, handling as can be known at this moment according to handover module, flow moves towards (CE1-PE1-P1-PE1-P2-PE2-P1-PE2-CE2) as shown in Figure 7.The process chart of Fig. 8 when two main tunnels being set on the core router and being equipped with the identical looped network protection group in tunnel, like this processing promptly can not form loop can packet loss yet, improve performance of handoffs greatly.
The method and the device of raising T-MPLS link looped network protection performance of handoffs of the present invention can improve the looped network performance of handoffs, can eliminate again simultaneously and switch the moment traffic loops, improve performance of handoffs greatly.
More than explanation is just illustrative for the purpose of the present invention; and nonrestrictive, those of ordinary skills understand, under the situation of the spirit and scope that do not break away from claims and limited; can make many modifications, variation or equivalence, but all will fall within the scope of protection of the present invention.
Claims (6)
1. a method that improves T-MPLS link looped network protection performance of handoffs is characterized in that, may further comprise the steps:
Configuration step: when disposing the looped network protection group on the router in the backbone network of T-MPLS link, dispose two standby forward-paths, these two standby forward-paths are distinguished corresponding main tunnels and are equipped with the tunnel;
Switch step: when looped network protection group on this router is switched; choose these two standby forward-paths as current forward-path; the flow of coming in from main tunnel is walked the standby forward-path corresponding with main tunnel, walks and the corresponding standby forward-path in tunnel fully from being equipped with the flow of coming in the tunnel.
2. the method for raising T-MPLS link looped network protection performance of handoffs as claimed in claim 1 is characterized in that,
Described router is edge router and/or core router.
3. the method for raising T-MPLS link looped network protection performance of handoffs as claimed in claim 1 is characterized in that,
When described router is a core router; and when disposing two main tunnels on this core router and being equipped with all identical looped network protection group in tunnel; whether also comprise determining step between described configuration step and described switch step: judging has the looped network protection group to switch on this core router; if then go to switch step, otherwise finish.
4. a device that improves T-MPLS link looped network protection performance of handoffs is characterized in that, comprises configuration module and handover module, wherein,
Described configuration module is used for disposing two standby forward-paths when disposing the looped network protection group on the router of the backbone network of T-MPLS link, and these two standby forward-paths are corresponding main tunnels and be equipped with the tunnel respectively;
Described handover module; be used for when looped network protection group on this router is switched; choose these two standby forward-paths as current forward-path; the flow of coming in from main tunnel is walked the standby forward-path corresponding with main tunnel, walks and the corresponding standby forward-path in tunnel fully from being equipped with the flow of coming in the tunnel.
5. the device of raising T-MPLS link looped network protection performance of handoffs as claimed in claim 4 is characterized in that described router is edge router and/or core router.
6. the device of raising T-MPLS link looped network protection performance of handoffs as claimed in claim 4 is characterized in that, also comprises judge module;
Described judge module; being used for working as described router is core router; and when disposing two main tunnels on this core router and being equipped with all identical looped network protection group in tunnel, judging whether have the looped network protection group to switch on this core router, if then start handover module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110248246.7A CN102291310B (en) | 2011-08-24 | 2011-08-24 | Method and device for improving T-MPLS link ring network protection switching performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110248246.7A CN102291310B (en) | 2011-08-24 | 2011-08-24 | Method and device for improving T-MPLS link ring network protection switching performance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102291310A true CN102291310A (en) | 2011-12-21 |
| CN102291310B CN102291310B (en) | 2017-04-26 |
Family
ID=45337428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110248246.7A Expired - Fee Related CN102291310B (en) | 2011-08-24 | 2011-08-24 | Method and device for improving T-MPLS link ring network protection switching performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102291310B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259721A (en) * | 2013-04-16 | 2013-08-21 | 杭州华三通信技术有限公司 | Message transmitting method and device in SPBM network |
| CN112019261A (en) * | 2019-05-31 | 2020-12-01 | 烽火通信科技股份有限公司 | Method and system for returning distributed control plane electrical layer 1+1 service |
| CN112311462A (en) * | 2020-11-05 | 2021-02-02 | 湖北工业大学 | Access layer equipment ring forming optimization method and system based on Packet Transport Network (PTN) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101247354A (en) * | 2008-03-26 | 2008-08-20 | 北京邮电大学 | Method for fast recovering heavy route aiming at T-MPLS network multicast |
| US20080219268A1 (en) * | 2007-03-01 | 2008-09-11 | Dennison Larry R | Software control plane for switches and routers |
| CN101431459A (en) * | 2008-12-17 | 2009-05-13 | 烽火通信科技股份有限公司 | Looped network protection method for transmitting multiprotocol label switching network |
| CN101594191A (en) * | 2008-05-27 | 2009-12-02 | 华为技术有限公司 | The guard method of shared link interlinking ring network, system and interlink node |
| US20100080120A1 (en) * | 2008-09-30 | 2010-04-01 | Yigal Bejerano | Protected-far-node-based solution for fault-resilient mpls/t-mpls multicast services |
| US20100188970A1 (en) * | 2009-01-28 | 2010-07-29 | Fujitsu Limited | Node apparatus, ring network, and protection path bandwidth control method |
| US20100278040A1 (en) * | 2007-12-29 | 2010-11-04 | Jia He | Protection method, system, and device in packet transport network |
| CN102014033A (en) * | 2010-12-13 | 2011-04-13 | 中兴通讯股份有限公司 | Method and system for restoring services of fault nodes in ring network |
| CN102035714A (en) * | 2010-12-17 | 2011-04-27 | 中兴通讯股份有限公司 | Intersected or tangent ring network protection method and system |
-
2011
- 2011-08-24 CN CN201110248246.7A patent/CN102291310B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080219268A1 (en) * | 2007-03-01 | 2008-09-11 | Dennison Larry R | Software control plane for switches and routers |
| US20100278040A1 (en) * | 2007-12-29 | 2010-11-04 | Jia He | Protection method, system, and device in packet transport network |
| CN101247354A (en) * | 2008-03-26 | 2008-08-20 | 北京邮电大学 | Method for fast recovering heavy route aiming at T-MPLS network multicast |
| CN101594191A (en) * | 2008-05-27 | 2009-12-02 | 华为技术有限公司 | The guard method of shared link interlinking ring network, system and interlink node |
| US20100080120A1 (en) * | 2008-09-30 | 2010-04-01 | Yigal Bejerano | Protected-far-node-based solution for fault-resilient mpls/t-mpls multicast services |
| CN101431459A (en) * | 2008-12-17 | 2009-05-13 | 烽火通信科技股份有限公司 | Looped network protection method for transmitting multiprotocol label switching network |
| US20100188970A1 (en) * | 2009-01-28 | 2010-07-29 | Fujitsu Limited | Node apparatus, ring network, and protection path bandwidth control method |
| CN102014033A (en) * | 2010-12-13 | 2011-04-13 | 中兴通讯股份有限公司 | Method and system for restoring services of fault nodes in ring network |
| CN102035714A (en) * | 2010-12-17 | 2011-04-27 | 中兴通讯股份有限公司 | Intersected or tangent ring network protection method and system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259721A (en) * | 2013-04-16 | 2013-08-21 | 杭州华三通信技术有限公司 | Message transmitting method and device in SPBM network |
| CN103259721B (en) * | 2013-04-16 | 2016-08-17 | 杭州华三通信技术有限公司 | Message forwarding method in SPBM network and device |
| CN112019261A (en) * | 2019-05-31 | 2020-12-01 | 烽火通信科技股份有限公司 | Method and system for returning distributed control plane electrical layer 1+1 service |
| CN112019261B (en) * | 2019-05-31 | 2022-02-08 | 烽火通信科技股份有限公司 | Method and system for returning distributed control plane electrical layer 1+1 service |
| CN112311462A (en) * | 2020-11-05 | 2021-02-02 | 湖北工业大学 | Access layer equipment ring forming optimization method and system based on Packet Transport Network (PTN) |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102291310B (en) | 2017-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9203732B2 (en) | Recovery of traffic in a connection-oriented network | |
| CN102035712B (en) | Multiprotocol label exchanged ring network protection method, device and system | |
| CN102474446A (en) | Recovery mechanism for point-to-multipoint traffic | |
| CN101771610B (en) | Transport multi-protocol label switching network system and link protection method | |
| CN102264088B (en) | Pseudo-wire pretection switch implementation method and device | |
| CN103765808A (en) | Utility communication method and system | |
| CN103843293A (en) | Communication system, sending device, communication device, failure notification method and non-temporary computer-readable medium storing program | |
| CN101286892A (en) | Device and method for service recovery | |
| CN101459535A (en) | Device and method for service recovery | |
| CN101815006B (en) | aggregation control method of links passing through provider network and system | |
| CN101227370B (en) | Method for processing fault of transferring multi-protocol label switch sharing protection ring | |
| CN1333554C (en) | Method for combining multi-section protection and mesh network recovery | |
| CN101674217B (en) | Method for realizing permanent ring network protection in MESH network | |
| CN102546248B (en) | Method, the Apparatus and system of accurate fault location under multi-protocol label switching environment | |
| CN102185712B (en) | The reverse method of VPLS network and ethernet ring network and device | |
| CN101425971B (en) | T-MPLS path layer tunnel switching method | |
| CN101483491B (en) | Shared guard ring, multicast source route protection method and node thereof | |
| CN101160865A (en) | Multicast service path protection system and method | |
| CN102315987A (en) | Ring network protection group link switching method and device | |
| CN102291310A (en) | Method and device for improving T-MPLS link ring network protection switching performance | |
| CN100531223C (en) | Method for realizing two-way marked exchange path | |
| CN102143410B (en) | Path computing method and unit in optical network | |
| CN101677294B (en) | Multilayer network resource optimization method, system and direct optical path server | |
| CN102740175A (en) | Method for protecting and recovering cross-domain end-to-end label switched path | |
| CN102571534B (en) | Service transmission method based on ring network protection and node used for service transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20190824 |