WO2009155799A1 - Procédé de récupération d’informations sur la base d’un redémarrage en douceur et routeur associé - Google Patents

Procédé de récupération d’informations sur la base d’un redémarrage en douceur et routeur associé Download PDF

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Publication number
WO2009155799A1
WO2009155799A1 PCT/CN2009/071004 CN2009071004W WO2009155799A1 WO 2009155799 A1 WO2009155799 A1 WO 2009155799A1 CN 2009071004 W CN2009071004 W CN 2009071004W WO 2009155799 A1 WO2009155799 A1 WO 2009155799A1
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WIPO (PCT)
Prior art keywords
router
information
ero
recovery message
path recovery
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Application number
PCT/CN2009/071004
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English (en)
Chinese (zh)
Inventor
柯峰
Original Assignee
华为技术有限公司
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Filing date
Publication date
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Publication of WO2009155799A1 publication Critical patent/WO2009155799A1/fr

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Classifications

    • 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
    • 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
    • H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
    • 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
    • H04L45/60—Router architectures

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an information recovery method and a router based on graceful restart.
  • MPLS Multi-Protocol Label Switching
  • RSVP Resource Reservation Protocol
  • LSP Label Switched Path
  • Router A is the source router
  • router E is the destination router
  • routers A, B, C, D, and E form the tunnel for transmitting packets.
  • the connections between the routers represent the links between the routers.
  • the numbers marked on both ends of the link represent the ingress and egress ports of the router.
  • the ERO (Explicit Route Object) information is stored in the PSB (Path State Block) of each router.
  • the ERO information is important information of the control plane, including the inbound interface of the downstream router. Interface and router identification information. Take Router C as an example.
  • the saved ERO information includes the outgoing port and ingress port (ports 6, 7, 8) of its downstream routers 0 and E.
  • the upstream path router A can send a Gr path message to the router B to recover the ERO information, and the message includes the router A.
  • ERO information (ports 2, 3, 4, 5, 6, 7, 8).
  • Router B After receiving the Gr path message, Router B obtains its downstream route based on the ERO message. The port information of the device, D, and E is used to recover the ERO information.
  • the Gr path message is a path message sent by the upstream router when the router is gracefully restarted.
  • Router A and Router B belong to the same domain in the network and belong to a different domain from Routers C, D, and E
  • Router A only stores the router port information that belongs to the same domain, that is, the port information of Router B. (Ports 2, 3).
  • Router B receives the Gr Path message sent by Router A and restores the ERO information, Router B cannot be caused because the port information of Routers C, D, and E is not carried in the Gr Path message. Fully restore ERO information.
  • the embodiment of the invention provides an information recovery method and a router, so that when the router is gracefully restarted, the ERO information can be reconstructed according to the message sent by the neighboring router, so that the fault of the router control plane is recovered.
  • An information recovery method based on graceful restart including:
  • the router When the router restarts, sending a restart message to the neighbor router, where the neighbor router includes an upstream neighbor router and a downstream neighbor router of the router;
  • the router recovers the control information according to the path recovery message.
  • a router that includes:
  • a sending unit configured to send a restart message to the neighboring router when the router restarts, where the neighboring router includes an upstream neighboring router and a downstream neighboring router of the router;
  • a receiving unit configured to receive a path recovery message sent by the neighboring router, where the path recovery message includes information about the neighboring router;
  • a router that includes:
  • the receiving unit is configured to receive a restart message sent by the upstream neighbor router or the downstream neighbor router, and send, by the sending unit, a path recovery message that includes the control information to the upstream neighbor router or the downstream neighbor router.
  • the router when the router restarts, it sends a restart message to its neighbor router, and receives a path recovery message sent by the neighbor router, where the message includes the information of the neighbor router, and according to the The path recovery message recovers the control information.
  • the path recovery message sent by the downstream neighboring router and the upstream neighboring router can be combined to accurately recover the ERO information of the control plane, so that the router that restarts can obtain all the control plane information required by the router.
  • the fault recovery capability of the router control plane when the router restarts, it sends a restart message to its neighbor router, and receives a path recovery message sent by the neighbor router, where the message includes the information of the neighbor router, and according to the The path recovery message recovers the control information.
  • FIG. 1 is a schematic diagram of a topology structure between routers
  • FIG. 2 is a flow chart of a first embodiment of an information recovery method according to the present invention.
  • FIG. 3 is a flow chart of information exchange before and after a router restarts according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a second embodiment of an information recovery method according to the present invention
  • FIG. 5 is a flowchart of a third embodiment of an information recovery method according to the present invention.
  • FIG. 6 is a flowchart of a fourth embodiment of an information recovery method according to the present invention.
  • FIG. 7 is a schematic diagram of a topology structure between routers corresponding to an embodiment of the method of the present invention
  • FIG. 8 is a block diagram of an embodiment of a router according to the present invention
  • FIG. 9 is a block diagram of an embodiment of another router of the present invention.
  • the embodiment of the invention provides an information recovery method and a router based on an elegant restart.
  • a router When a router restarts, it sends a restart message to its neighbor router, receives a path recovery message sent by the neighbor router, and recovers the control information according to the path recovery message. .
  • Step 201 When the router restarts, it sends a restart message to its neighbor router.
  • the neighbor router of the router includes its upstream neighbor router and downstream neighbor router.
  • Step 202 Receive a path recovery message sent by the neighboring router.
  • the receiving the path recovery message sent by the neighboring router includes: receiving a path recovery message sent by the upstream neighboring router, and/or receiving a path recovery message sent by the downstream neighboring router.
  • the path recovery message includes the information of the neighboring router, and the information of the neighboring router includes the ERO information of the neighboring router.
  • the information of the neighboring router includes at least the ingress port information of the neighboring router and the neighbor.
  • One of the outbound port information of the router and the neighbor router ID is the information of the neighboring router.
  • Step 203 Restore the control information according to the path recovery message.
  • the control information is specifically ERO information, and the ERO information specifically includes ERO information of the primary tunnel router, and/or ERO information of the bypass router.
  • Routing device Router A and Router C have the ability to support Router B:
  • Step 301 Router A, Router B, and Router C have established a connection through a Hello session.
  • Step 302 When the forwarding plane is normal and the traffic is not interrupted, the control plane generates a fault and an elegant restart occurs.
  • Step 303 Router A and Router C establishing a connection with Router B detect that Router B has gracefully restarted by Hello message, and Router B already includes Restart Time in the Hello message sent to Router A and Router C.
  • Step 304 Router A and Router C continuously send a Hello Request message to Router B.
  • Router A is the upstream neighbor router of Router B.
  • the Hello Request message sent includes whether Router A has the capability to support RSVP-GR.
  • Router C acts as the downstream neighbor router of Router B.
  • the Hello Request message is sent. Whether Router C has information that supports Recovery Path capability and GR capability.
  • Router A and Router C start their respective Restart Timers for Router B according to the Restart Time. (Restart timer).
  • Step 305 Router B sends a Hello Ack message to Router A and Router C, respectively.
  • the message includes the capability of the router B to support the GR, or the capability of receiving the Recovery Path.
  • the router B in the embodiment of the present invention has the support of the GR. Ability.
  • Step 306 After receiving the Hello Ack message of Router B, Router A stops the Restart Timer for Router B, starts the Recovery Timer for Router B, and then sends a Gr Path message to Router B.
  • Step 307 After receiving the Hello Ack message from Router B, Router C stops the Restart Timer for Router B, starts the Recovery Timer for Router B, and then sends a Recovery Path message to Router B.
  • Step 307 Router B recovers the ERO message according to the Gr Path message and the Recovery Path message.
  • Step 308 The elegant restart of the router B is completed, the control plane is recovered, and the router A, the router B, and the router C are respectively aged.
  • FIG. 4 The flow of the second embodiment of the information recovery method of the present invention is shown in FIG. 4.
  • This embodiment shows the process of restoring the ERO information of the primary tunnel router when receiving the path recovery message sent by the downstream neighbor router:
  • Step 401 When the router gracefully restarts, it sends a restart message to its neighbor router.
  • Step 402 Receive a path recovery message sent by the downstream neighbor router.
  • the router that gracefully restarts in this embodiment may receive the path recovery message sent by the upstream neighbor router and the downstream neighbor router at the same time, or may only receive the path recovery message sent by the downstream neighbor router, but only receives the downstream path.
  • the path recovery message sent by the neighbor router is used, the ERO information of the primary tunnel router is restored only for the path recovery message.
  • Step 403 Read the information of the downstream neighbor router in the path recovery message.
  • the path recovery message sent by the downstream neighboring router includes the ERO information stored in the downstream neighboring router.
  • the ERO information includes the downstream route corresponding to the downstream neighboring router on the primary tunnel. All the inbound port information and the outbound port information of the device; the path recovery message also includes the ingress port information, the outbound port information, and the LSR (Lable Switch Router) identifier of the downstream neighboring router.
  • LSR Lable Switch Router
  • the path recovery message may carry the above three. Any information in the information; and the order of addition of the above three kinds of information in the path recovery message is not fixed.
  • Step 404 Write the information of the downstream neighbor router to the corresponding location of the ERO information of the storage main tunnel router.
  • the read path recovery message includes the ingress port information, the outbound port information, and the LSR identifier of the downstream neighbor router in addition to the ERO information of the downstream neighbor router.
  • the ERO information of the primary tunnel stored in the router that has been restarted has been lost.
  • the router writes all the information read into the corresponding location of the ERO information of the primary tunnel router to complete the recovery of the ERO information of the primary tunnel.
  • FIG. 5 The flow of the third embodiment of the information recovery method of the present invention is shown in FIG. 5.
  • This embodiment shows the process of restoring the ERO information of the bypass router according to the path recovery message when receiving the path recovery message sent by the downstream neighbor router. :
  • Step 501 The router sends a restart message to its neighbor router when the router restarts gracefully.
  • the bypass in the method embodiment of the present invention specifically refers to a chain formed by the end router of the protection link to the continuous router of the destination router on the primary tunnel link.
  • the end router of the protection link is the first router of the bypass.
  • the router that gracefully restarts is the first router of the protection link, and the identifier information of the first router in the bypass is pre-stored in the router.
  • Step 502 Receive a path recovery message sent by a downstream neighbor router.
  • Step 503 Read the information of the downstream neighbor router in the path recovery message.
  • the path recovery message sent by the downstream neighboring router includes the ERO information stored in the downstream neighboring router, where the ERO information includes the downstream of the downstream neighboring router on the primary tunnel. All the inbound port information and the outbound port information of the router; the path recovery message also includes the ingress port information, the outbound port information, and the LSR identifier of the downstream neighboring router.
  • Step 504 Obtain the ERO information of the bypass router according to the information of the downstream neighbor router and the identifier of the first router in the bypass stored in the restarted router.
  • the received path recovery message already includes the ingress port information and the outbound port information of all the downstream routers of the first router, the information of all the routers in the bypass must be included in the information, according to the saved first router identifier and path. All the ERO information of the bypass router can be obtained by restoring the port information of the router in the bypass included in the message.
  • Step 505 Write the obtained ERO information to a corresponding location of the storage bypass router ERO information.
  • the bypass router ERO information stored in the restarted router has been lost.
  • the router writes all the information read to the corresponding location of the storage bypass router ERO information to complete the recovery of the bypass ERO information.
  • FIG. 6 The flow of the fourth embodiment of the information recovery method of the present invention is as shown in FIG. 6.
  • This embodiment shows the process of restoring the ERO information of the primary tunnel router only when receiving the path recovery message sent by the upstream neighbor router:
  • Step 601 When the router gracefully restarts, it sends a restart message to its neighbor router.
  • Step 602 Receive a path recovery message sent by the upstream neighbor router.
  • the router that gracefully restarts in this embodiment only receives the path recovery message sent by the upstream neighbor router, but does not receive the path recovery message sent by the downstream neighbor router.
  • Step 603 Read the ERO information of the upstream neighbor router in the path recovery message.
  • the path recovery message sent by the upstream neighbor router contains the information stored in the upstream neighbor router.
  • the ERO information includes all ingress port information and egress port information of the downstream router corresponding to the upstream neighboring router on the primary tunnel. Therefore, the port information must also include the ingress port information and the egress port information of the restarted router. .
  • Step 604 Delete the port information of the router that is restarted included in the ERO information.
  • the restarting router recovers its own ERO information, it only needs the port information of its downstream router, so the port information of the restarted router included in the received path recovery message is deleted.
  • Step 605 Write the remaining port information in the ERO information to the storage main tunnel router ERO letter The corresponding location of the interest.
  • the ERO information of the primary tunnel stored in the restarted router has been lost.
  • the router will only include the inbound port information and outbound port information of the downstream router of the router that has restarted, and write the corresponding location of the ERO information of the storage main tunnel router to complete the main tunnel ERO. Recovery of information.
  • the received path recovery message includes only the path recovery message sent by the upstream neighboring router
  • the ERO information of the bypass router is restored according to the path recovery message
  • the upstream neighbor in the path recovery message is read.
  • the ERO information of the router is then obtained according to the ERO information and/or the identifier of the first router in the bypass stored in the restarted router, and the ERO information of the bypass router is obtained, and finally the acquired ERO information is written into the bypass router ERO.
  • the process of recovering the ERO information of the bypass router by using the path recovery message sent by the upstream neighboring router is similar to the third embodiment of the method of the present invention, and details are not described herein again.
  • Router A is the source.
  • Routers, routers E are destination routers, routers A, B, C, D, and E form the primary tunnel for transmitting packets, and routers B, F, and D form the protection link for protection router C, and the end router D and destination of the protection link.
  • Router E forms the information of the bypass ERO.
  • the connection between each router represents the link between the routers.
  • the numbers marked on both ends of the link represent the ingress and egress ports of the router.
  • the router B receives the Recovery Path message sent by its downstream neighbor router C.
  • the Recovery path message contains the ERO information in the router C, that is, the Outbound port information and ingress port information (ports 6, 7, 8) of downstream router D and router E of router C; Router C can also write its own ingress port 4, egress port 5, and LSR identifier C to the Recovery path message.
  • the router C can write only at least one of the above three kinds of information, because the above three kinds of information respectively correspond to three storage addresses on the router C, and the router C adds itself to the Recovery path message.
  • the router B When information is added, only the corresponding information in the storage address that can be obtained is added. Assuming that the above three messages are added by the router C, after receiving the Recovery path message, the router B reads the port information (ports 4, 5, 6, 7, 8) of the router C, the router D, and the router E included therein. The LSR identifier of Router C, and write the read information to the corresponding ERO information of the storage main tunnel. Location, whereby Router B can recover all ERO information for its downstream routers on the primary tunnel. Router B also pre-stores the LSR identifier of the first router D in the bypass. Therefore, Router B can recover the outbound port of router D and the ingress port 8 of router E according to the path recovery message sent by router C.
  • the ERO information that is, the LSR identifier of the router D, the LSR identifier of the router E, and the port information (ports 7, 8), thereby enabling the router to recover all ERO information of the bypass router.
  • the ERO information is completely recovered by the path recovery message sent by the downstream neighbor router of the restarting router. Since the restarting router and its downstream neighbor router are usually located in the same domain in the network, the restarting router can be restored. All failed ERO information avoids the path recovery message sent by the upstream neighbor router only, and cannot completely recover all ERO information when it is cross-domain.
  • Router B When all the routers are located in the same domain on the network, it is assumed that Router B has gracefully restarted, and the ERO information of its control plane is lost. At this time, Router B only receives the Gr path message sent by its upstream neighbor router A, and the Gr path message. Contains the ERO information of Router A (ports 2, 3, 4, 5, 6, 7, 8). After receiving the Gr path message, Router B deletes the inbound port 2 and the egress port 3 of Router B itself. The port information of the remaining downstream routers, D, and E is written to the corresponding location of the ERO information of the storage main tunnel, so that the ERO information recovery of the router B is implemented by using the Gr path message.
  • the present invention also provides a router that typically has the ability to gracefully restart and has the ability to receive path recovery messages sent by its neighbor routers.
  • FIG. 8 A block diagram of an embodiment of a router of the present invention is shown in FIG. 8.
  • the router includes: a transmitting unit 810, a receiving unit 820, and a restoring unit 830.
  • the sending unit 810 is configured to send a restart message to the neighbor router when the router restarts, the neighbor router includes an upstream neighbor router and a downstream neighbor router of the router, and the receiving unit 820 is configured to receive a path recovery message sent by the neighbor router.
  • the message includes information about the neighbor router; the recovery unit 830 is configured to recover the control information according to the path recovery message.
  • the restoring unit 830 when the receiving unit 820 is configured to receive a path recovery message sent by the downstream neighboring router, and the restoring unit 830 is configured to recover the ERO information of the primary tunneling router, the restoring unit 830 The device includes: a reading unit, configured to read information of a downstream neighbor router in the path recovery message; and a writing unit, configured to write information of the downstream neighboring router to the storage of the primary tunnel router
  • the restoring unit 830 specifically includes: a reading unit, configured to read the path recovery The information of the downstream router in the message; the acquiring unit, configured to acquire the bypass router according to the information of the downstream neighbor router and/or the identifier of the first router in the bypass stored in the restarting router
  • the ERO information is used by the writing unit to write the acquired ERO information to a corresponding location where the bypass router ERO information is stored.
  • the restoring unit 830 When the receiving unit 820 is only used to receive the path recovery message sent by the upstream neighboring router, and the restoring unit 830 is configured to restore the ERO information of the primary tunneling router, the restoring unit 830 specifically includes: a reading unit, configured to read the path The ERO information of the upstream neighbor router in the message is deleted; the deleting unit is configured to delete the information of the restarting router included in the ERO information; and the writing unit is configured to write the deleted ERO information into the storage station The corresponding location of the ERO information of the primary tunnel router.
  • the recovery unit 830 specifically includes: a reading unit, configured to read the path Recovering the ERO information of the upstream neighboring router in the message; the acquiring unit, configured to acquire the ERO of the bypass router according to the ERO information and/or the identifier of the first router in the bypass stored in the restarting router And a writing unit, configured to write the acquired ERO information to a corresponding location where the bypass router ERO information is stored.
  • the present invention also provides another router, which usually has the ability to support graceful restart, and in the network, the router is usually a downstream neighbor router of a router that has gracefully restarted.
  • a path recovery message for recovering control information is sent to a router that has restarted.
  • FIG. 9 A block diagram of an embodiment of another router of the present invention is shown in FIG. 9.
  • the router includes: a receiving unit 910 and a transmitting unit 920.
  • the receiving unit 910 is configured to receive a restart message sent by the upstream neighboring router
  • the sending unit 920 is configured to send, to the upstream neighboring router, a path recovery message that includes control information.
  • the sending unit 920 includes an adding unit 921, configured to add ERO information to the path recovery message, and add at least one of inbound port information, outbound port information, and router identifier; and a transmitting unit 922, configured to The upstream neighbor router transmits the path recovery message.
  • the path recovery message sent by the downstream neighboring router and the upstream neighboring router can be used to accurately recover the ERO information of the control plane, that is, the information of all the status blocks in the router can be restored. And the information of all objects in the status block, so that the router that restarts can obtain all the control plane information it needs, which improves the fault recovery capability of the router control plane.
  • the method includes the following steps: when the router restarts, sending a restart message to the neighbor router, where the neighbor router includes an upstream neighbor router and a downstream neighbor router of the router; receiving a path recovery message sent by the neighbor router, where the path recovery message is Information including the neighbor router; the router recovers control information according to the path recovery message.
  • the storage medium is, for example, a ROM/RAM, a magnetic disk, an optical disk, or the like.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un procédé de récupération d’informations sur la base d’un redémarrage en douceur, comportant les étapes consistant à : envoyer un message de redémarrage aux routeurs voisins lorsqu’un routeur est en cours de redémarrage, les routeurs voisins comprenant le routeur voisin en amont et le routeur voisin en aval du routeur considéré ; recevoir un message de récupération d’itinéraire envoyé par un routeur voisin, le message de récupération d’itinéraire comprenant les informations relatives au routeur voisin ; faire récupérer par le routeur les informations de contrôle selon le message de récupération d’itinéraire. L'invention concerne également un routeur. En appliquant le mode de réalisation de l’invention, les informations d’ERO du plan de commande peuvent être récupérées avec exactitude en combinant le message de récupération d’itinéraires envoyé par le routeur voisin en aval et le routeur voisin en amont, c’est-à-dire que l’on peut récupérer les informations relatives à tous les blocs d’état du routeur et les informations relatives à tous les objets inclus dans les blocs d’état. Le routeur en cours de redémarrage peut ainsi obtenir toutes les informations de plan de commande requises, ce qui améliore la capacité de récupération du plan de commande du routeur après un mauvais fonctionnement.
PCT/CN2009/071004 2008-06-23 2009-03-25 Procédé de récupération d’informations sur la base d’un redémarrage en douceur et routeur associé WO2009155799A1 (fr)

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CN2008101291155A CN101616069B (zh) 2008-06-23 2008-06-23 基于优雅重启的信息恢复方法和路由器

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101895475B (zh) * 2010-07-30 2012-05-30 迈普通信技术股份有限公司 基于pim sm协议的优雅重启方法及其系统
CN102769571B (zh) * 2012-07-30 2015-04-15 杭州华三通信技术有限公司 一种平滑重启实现方法及设备
CN103001873B (zh) * 2012-12-10 2016-03-30 福建星网锐捷网络有限公司 一种招呼会话重建方法及系统
CN108234184B (zh) 2016-12-22 2021-01-15 上海诺基亚贝尔股份有限公司 用于管理用户信息的方法和设备
CN114143255A (zh) * 2020-08-14 2022-03-04 华为技术有限公司 一种路径还原的方法及设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1492601A (zh) * 2002-10-25 2004-04-28 华为技术有限公司 智能光网络中多节点重启后控制平面的恢复方法
CN1801802A (zh) * 2004-12-31 2006-07-12 华为技术有限公司 通用多协议标签交换路径上节点重启恢复的方法
WO2007065294A1 (fr) * 2005-12-07 2007-06-14 Zte Corporation Procede pour le traitement de redemarrage progressif de protocole rsvp lors du redemarrage simultane d'une pluralite de noeuds voisins
CN101179446A (zh) * 2006-11-10 2008-05-14 华为技术有限公司 减少错误平滑重启状态持续时长的方法及路由器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1980224A (zh) * 2005-12-01 2007-06-13 华为技术有限公司 基于主备网关设备状态切换后业务恢复的方法及系统
CN101087207B (zh) * 2006-06-09 2010-05-12 华为技术有限公司 一种多节点通信故障的处理方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1492601A (zh) * 2002-10-25 2004-04-28 华为技术有限公司 智能光网络中多节点重启后控制平面的恢复方法
CN1801802A (zh) * 2004-12-31 2006-07-12 华为技术有限公司 通用多协议标签交换路径上节点重启恢复的方法
WO2007065294A1 (fr) * 2005-12-07 2007-06-14 Zte Corporation Procede pour le traitement de redemarrage progressif de protocole rsvp lors du redemarrage simultane d'une pluralite de noeuds voisins
CN101179446A (zh) * 2006-11-10 2008-05-14 华为技术有限公司 减少错误平滑重启状态持续时长的方法及路由器

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