WO2013166911A1 - 一种处理网络中设备组标识符冲突的方法和路由网桥 - Google Patents

一种处理网络中设备组标识符冲突的方法和路由网桥 Download PDF

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Publication number
WO2013166911A1
WO2013166911A1 PCT/CN2013/074551 CN2013074551W WO2013166911A1 WO 2013166911 A1 WO2013166911 A1 WO 2013166911A1 CN 2013074551 W CN2013074551 W CN 2013074551W WO 2013166911 A1 WO2013166911 A1 WO 2013166911A1
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group
routing bridge
belongs
information
routing
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PCT/CN2013/074551
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English (en)
French (fr)
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翟洪军
成明江
廖婷
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中兴通讯股份有限公司
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Publication of WO2013166911A1 publication Critical patent/WO2013166911A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46Interconnection of networks
    • H04L12/4604LAN interconnection over a backbone network, e.g. Internet, Frame Relay
    • H04L12/462LAN interconnection over a bridge based backbone
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/50Address allocation
    • H04L61/5046Resolving address allocation conflicts; Testing of addresses
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/50Address allocation
    • H04L61/5069Address allocation for group communication, multicast communication or broadcast communication

Definitions

  • the present invention relates to network communication technologies and, more particularly, to a method and routing bridge for handling device group identifier conflicts in a network in a TRILL network.
  • TRILL Transparent Interconnection over Lots of Links
  • L2 connection layer
  • IETF Internet Engineering Task Force
  • STP Session Transfer Protocol
  • STP Session Transfer Protocol
  • L2 network STP avoids loops by blocking redundant links, but it also causes waste of redundant link bandwidth (blocked).
  • IS-IS Intermediate System to Intermediate System
  • TRILL solves the L2 loop problem while preserving L2 multipath (or ECMP (Equivalent Cost Multiple Path, etc.). Price multipath)).
  • the device running the TRILL protocol is called RBridge and the Nickname uniquely identifies an RBridge.
  • the original data frame of the end station is encapsulated into a TRILL format (that is, a TRILL header and an external frame header are added in front of the original data frame, and the TRILL header mainly includes a TRILL network entry and an egress routing bridge.
  • the routing bridge of the Nickname and hop counts and injected into the TRILL network is called Ingress RBridge.
  • the TRILL data frame is decapsulated into the original data frame and forwarded to the routing network of the end device.
  • the bridge is called Egress RBridge.
  • Egress RBridge learns from which Ingress RBridge the original frame is imported into the TRILL network, and forms a MAC (Media Access Control) information table ⁇ D MAC.
  • RBridge In order to avoid loops, at the border of the TRILL network, only one RBridge can serve one end system in any VLAN (Virtual Local Area Network). This RBridge is called the service provider of this end system, for example.
  • the VLAN-x on the shared link specifies the forwarder (Appointed Forwarder, AF).
  • AF Appointed Forwarder
  • this kind of regulation can effectively avoid The loop, but also brings some problems, for example: After the AF switchover on the shared link, the Ingress_ Nickname changes in some MAC entries on the remote Egress. If the change is frequent, the Ingress_Nickname will also be brought.
  • the TRILL working group proposed the concept of a routing bridge group (RBridge Grou, RBG for short) or a virtual routing bridge (Virtual RBridge, RBv for short).
  • RBv the group members share a Nickname, called the group Nickname.
  • the group member routing bridge uses the group Nickname instead of its own device Nickname to complete the TRILL encapsulation of the original data, thereby breaking the above provisions. Avoid flip-flop problems.
  • RBv will advertise its own group Nickname in the TRILL network to help other RBridges learn the path to the RBv.
  • the nickname of the RBv can be automatically obtained from the TRILL network by the member RBridge, for example: a shared link; in some scenarios, it can only be manually configured by the network administrator, for example, in a LAG application.
  • the Nickname of RBG must satisfy the following two principles: 1) The Nickname must not be the same between different RBv groups; 2) Within the same RBv, the Nickname must be the same between different members. Violation of the first principle will result in data frame forwarding errors, causing the loss of the message. For example: In Figure 1, RBvl and RBv2 belong to different organizations. If their group Nickname is the same, it may cause H3 to send HI. The text is routed to RBv2 by RB5 to form a forwarding black hole. Violation of the second principle will result in a MAC flip-flop problem.
  • the technical problem to be solved by the present invention is to provide a method and device for handling device group identifier conflicts in a network to solve the problem of device group identifier conflicts in the network.
  • the present invention provides a method for processing a device group identifier conflict in a network, including:
  • the routing bridge obtains group information of the routing bridge group to which it belongs;
  • the routing bridge After receiving the link state packet of the other routing bridge, the routing bridge detects whether the device group identifier conflict occurs by comparing the group information of the routing bridge group carried in the link state packet.
  • the step of detecting whether a device group identifier conflict occurs by comparing group information of the routing bridge group carried in the link state packet includes:
  • the routing bridge parses the link state packet, and obtains group information of the routing bridge group carried in the link state packet, where the group information of the routing bridge group includes: sending the link state packet The alias of the device, the system ID, and the group alias of the routing bridge group to which it belongs;
  • the routing bridge determines whether the group alias of the routing bridge group to which the sending device of the link state packet belongs is the same as the group alias of the routing bridge group to which the routing bridge belongs, and if the same, the link is determined. Whether the system identifier of the sending device of the status packet conflicts with the group member device group identifier of the group to which the routing bridge itself belongs.
  • the group information of the routing bridge group further includes: priority information of the routing bridge group to which the sending device of the link state packet belongs, and after the step of protruding, the method further includes:
  • the routing bridge is determined according to the priority information of the routing bridge group to which the sending device of the link state packet belongs, for example, determining that the priority of the routing bridge group to which the routing bridge belongs is greater than the link state. If the priority of the routing bridge group to which the packet is sent is high, the packet is encapsulated with the group alias of the routing bridge group to which the routing bridge belongs. Otherwise, the routing network to which the routing bridge belongs is discarded. The group alias of the bridge group encapsulates the packet.
  • the foregoing method has the following features:
  • the step of the routing bridge acquiring the group information of the routing bridge group to which the routing bridge belongs includes:
  • the routing bridge obtains the group alias of the routing bridge group to which it belongs, the group member device information, and the priority information of the affiliated bridge group.
  • the foregoing method further has the following features: after the step of obtaining, by the routing bridge, the group information of the routing bridge group to which the routing bridge belongs, the method further includes:
  • the routing bridge floods the link state packet generated by the routing bridge to the multi-link transparent interconnection network, where the link state packet includes: a group alias, priority information of the routing bridge group to which the routing bridge belongs The information of the routing bridge.
  • the present invention also provides a routing bridge, including:
  • a first module configured to obtain group information of a routing bridge group to which the routing bridge belongs; a second module, configured to compare a routing network carried in the link state packet after receiving the link state packet The group information of the bridge group to detect whether a device group identifier conflict has occurred.
  • the above routing bridge also has the following features:
  • the second module includes:
  • a first unit configured to parse the link state packet, and obtain group information of a routing bridge group carried in the link state packet, where the group information of the routing bridge group includes: the link state packet The alias of the sending device, the system ID, and the group alias of the routing bridge group to which it belongs;
  • a second unit configured to determine whether the group alias of the routing bridge group to which the sending device of the link state packet belongs is the same as the group alias of the routing bridge group to which the routing bridge belongs, and if yes, determine the Whether the system identifier of the sending device of the link state packet is in the group member information list of the group to which the routing bridge belongs, and if not, the second unit determines that the device group of the sending device with the link state packet occurs. Identifier conflict.
  • the above routing bridge also has the following features:
  • the group information of the routing bridge group further includes: priority information of the routing bridge group to which the sending device of the link state packet belongs,
  • the routing bridge further includes:
  • a third module configured to determine, at the second unit, a transmitting device of the link state packet After the device group identifier conflict occurs, determining, according to the priority information of the routing bridge group to which the sending device of the link state packet belongs, such as determining the priority of the routing bridge group to which the routing bridge belongs If the priority of the routing bridge group to which the link state packet belongs is high, the packet is encapsulated with the group alias of the routing bridge group to which the routing bridge belongs. Otherwise, the routing bridge itself is discarded. The group alias of the routing bridge group encapsulates the packet.
  • the routing bridge has the following features: The routing bridge obtains group information of the routing bridge group to which it belongs:
  • the routing bridge obtains the group alias of the routing bridge group to which it belongs, the group member device information, and the priority information of the affiliated bridge group.
  • the above routing bridge also has the following features:
  • the first module after the step of acquiring the group information of the routing bridge group to which the routing bridge belongs, is further configured to flood the link state packet generated by the routing bridge itself to the multi-link transparent interconnection network.
  • the link state packet includes: a group alias of the routing bridge group to which the routing bridge belongs, priority information, and information of the routing bridge.
  • the present invention provides a method for processing device group identifier conflicts in a network and a routing bridge, which can solve the problem of device identifier conflicts in the network.
  • the application scenario of the present invention is not reflected in the TRILL basic protocol.
  • Extension of the subsequent application of the TRILL protocol, the present invention is a solution proposed based on a problem arising from a new application scenario.
  • FIG. 1 is a schematic diagram of a TRILL network topology structure including a LAG
  • FIG. 2 is a schematic diagram of a topology structure of a TRILL network including a LAN;
  • FIG. 3 is a flowchart of a method for processing device identifier conflicts in a network according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a route bridge according to an embodiment of the present invention. Preferred embodiment of the invention
  • FIG. 3 is a flowchart of a method for processing device identifier conflicts in a network according to an embodiment of the present invention. As shown in FIG. 3, the method includes the following steps:
  • the routing bridge acquires group information of the routing bridge group to which it belongs.
  • the routing bridge After receiving the link state packet, the routing bridge detects whether a device group identifier conflict occurs by comparing group information of the routing bridge group carried in the link state packet. After the process, the method in this embodiment may further include:
  • the routing bridge determines, according to the priority information of the routing bridge group to which the sending device of the link state packet belongs, such as determining a priority of the routing bridge group to which the routing bridge belongs. If the routing device group to which the routing device belongs has a high priority, the packet is further encapsulated by the group alias of the routing bridge group to which the routing bridge belongs. Otherwise, the routing bridge itself is discarded. The group alias of the routing bridge group encapsulates the packet.
  • a member of the group in the embodiment a member device that constitutes a device group, such as a member RBridge that constitutes an RBv;
  • the group member information mainly includes the group Nickname of the RBv to which the routing bridge joins, the priority of the group member in the group, and the system identifier (System ID) of the group member;
  • Priority of the device group The priority of the member with the highest priority and the system ID of the member group of the device group are the priority of the device group; if there are two or more devices in the device group The highest priority group member, the priority of the group is the priority and System ID of the members with the largest system ID among the members of the same priority.
  • the methods for obtaining group member information can be divided into two categories: dynamic acquisition mode and static configuration mode, as follows:
  • the group members can find the group members through the intra-group message interaction, then the dynamic discovery method is used. Now get the information of the team members;
  • the group members cannot find the group members through the intra-group message exchange, the manual configuration mode is notified, and the other group members in the group are configured on the group members, for example, in the application scenarios such as LAG and Multi-homing.
  • the member of the RBv group carries its own RBv information in the Link State Packet (LSP), and advertises the LSP to the entire TRILL network.
  • LSP Link State Packet
  • the device compares the RBv information in the packet to confirm whether the device group identifier conflict occurs.
  • the LSP Analyze the LSP, obtain the Nickname of the group to which the sender belongs, and the information such as the priority and the system ID. If the Nickname is different from the Nickname of the group to which it belongs, check further: The system ID of the sender of the LSP is in the group member list to which it belongs. If yes, then the group identifiers of different group members in the same device group are inconsistent; if not, there is no identifier conflict;
  • the sender's System ID is in the group member information list of the group to which it belongs. If it is in the list, the identifier is not considered to be in conflict. If it is not in the list, The identifier is considered to be in conflict.
  • the RBv group to which the LSP sender belongs and the RBv group in which the LSP sender belongs are compared to determine whether the group continues to use the identifier or reselect another identifier, as follows:
  • the device group continues to use the group Nickname; otherwise, the device group discards the Nickname and reacquires an available Nickname as the group Nickname. Furthermore, if the result is that the new group Nickname cannot be obtained, the device group is invalid, and the group member no longer uses the group Nickname - to install the message.
  • the application scenario in the embodiment of the present invention is not embodied in the TRILL basic protocol, and is an extension of the subsequent application of the TRILL protocol.
  • the present invention is a solution proposed based on a problem generated by a new application scenario.
  • HI accesses the TRILL network through RBI and RB2; H2 accesses the TRILL network through RB3 and RB4; H3 directly accesses TRILL through RB5.
  • HI and H3 or H2 and H3 communicate, in order to avoid causing the MAC address flap-flop on RB5, RBI and RB2 are in the RBvl group, and RB3 and RB4 are in the RBv2 group.
  • the keep-alive packets sent by the member device RB1 of the routing bridge group RBv1 cannot reach RB2 through the intra-group link, and vice versa. Therefore, RB 1 and RB2 can know each other by manual configuration. Your own legal team member in RBvl, as well as the priority and System ID in the group.
  • the configuration process is as follows:
  • Step 101 Obtain a Nickname available in the current TRILL network by viewing the link state database on the RB1, and select one of the Nicknames as the RBvl group, such as Nickl.
  • Step 103 On RB1, configure RB2 to be a legal member of RB1 in RBvl.
  • the priority of the member is Pril-2, and the system ID is System 1 2;
  • Step 104 On RB2, add the downlink port (to HI) to RBv1 according to the method of steps 102 to 103, and the group name is Nickl; and configure RB1 as the legal group member of RB2 in RBvl, the group
  • the priority of the member is PIR-1, and the system ID is System 1-1;
  • Step 105 On RB1, RB1 can know the priority and group system ID in the RBv1 group by comparing the priority and System ID of the other group members with RBvl. Assume: Pril_KPril_2, and Systeml_Systeml-2, then the priority of RBvl is Pril-2, and the system ID is System1-2. Similarly, by comparing with the parameters of the group member, RB2 can also learn that the priority of RBvl is Pri 1 _2 and the system ID is System 1 _2. With the above configuration, the virtual routing bridge group RBvl is created on the downlink ports of RB1 and RB2, and the legal group members in the group and the priority and system ID of the group are specified. This information can be used for collision detection between subsequent routing bridge groups Nickname.
  • RBv2 with the group name Nick2 can be created on RB3 and RB4.
  • the priority of RB3 is Pri2_l
  • the system ID is System2-1
  • the priority of RB4 is Pri2-2.
  • Step 201 RB 1 and RB2 respectively declare in their own LSP that they join the routing bridge group whose name is Nickl, the priority of the group and the system ID of the group, and flood the LSP to the TRILL network.
  • RB3 and RB4 flood the LSP and claim to join the routing bridge group with the group name Nick2 and the priority and system ID of the group;
  • Step 202 After receiving the LSP of RB2, RB1 finds its group Nickname and its own group.
  • the following takes the third embodiment as an example to illustrate the group Nickname conflict handling between RBvl and RBv2 from the perspective of RB1.
  • Step 302 After RB1 receives the LSP sent by RB4, if a group name conflict is found, a similar judgment is made, and according to the judgment result, whether to continue to use or terminate the use of Nickl to perform TRILL encapsulation on the uplink packet.
  • RBI, RB2, RB3 and RB4, and HI and H2 are all linked to a shared link, and any one of the routing bridges that send the keep-alive packets (such as Hello packets) to the link can be Linked to other routing bridges on this link received.
  • the creation of a routing bridge group is much simpler, and dynamic acquisition of group member information and automatic processing of group name conflicts can be realized. The following is described by way of examples.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • Step 401 Enable the function of enabling the virtual routing bridge group on the interfaces of the RB 1, RB2, RB3, and RB4 connected to the shared link, and the routing bridges claim that they support and enable the Hello message in their own Hello message. Function, in addition to carrying its own priority on the link and system ID and other information;
  • Step 402 The advertisement parses the Hello message collected from the link, and the four routing bridges can select one member (such as the member with the highest priority) to automatically apply for an available one from the TRILL network on behalf of the bridge group.
  • Nickname (such as Nick-i) is used as the Nickname of the group and advertises Hello messages to other members.
  • Step 403 After receiving the group name notification, the four group members can respectively publish the virtual routing bridge group Nick in their own LSP, and know the priority and system ID of the group (that is, the highest priority). Member's priority and System ID).
  • RB1 handles the conflict of virtual routing bridge groups.
  • Step 501 When RB1 finds that the group name of the other routing bridge group conflicts with the group in which it is located, First, determine whether the local group needs to reselect the group Nickname through the priority comparison. If the group name needs to be reselected, proceed to step 502, otherwise go to step 504;
  • Step 502 Re-apply an available Nickname as a group name from the TRILL network, and re-publish the Nickname in its Hello message, such as NickJ;
  • Step 503 After receiving the Hello packet, the other routing bridges on the link replace the NickJ.
  • Nick-i is the new group name, and the group name is re-published in its own LSP, and the uplink packet is TRILL encapsulated with the new group name, and the process goes to step 505;
  • Step 504 Continue to use Nick_i as the group name of the routing bridge group
  • Step 505 End.
  • FIG. 4 is a schematic diagram of a routing bridge according to an embodiment of the present invention. As shown in FIG. 4, the routing bridge in this embodiment includes:
  • a first module configured to obtain group information of a routing bridge group to which the routing bridge belongs; a second module, configured to compare a routing network carried in the link state packet after receiving the link state packet The group information of the bridge group to detect whether a device group identifier conflict has occurred.
  • the second module includes:
  • a first unit configured to parse the link state packet, and obtain group information of a routing bridge group carried in the link state packet, where the group information of the routing bridge group includes: the link state packet The alias of the sending device, the system ID, and the group alias of the routing bridge group to which it belongs;
  • a second unit configured to determine whether the group alias of the routing bridge group to which the sending device of the link state packet belongs is the same as the group alias of the routing bridge group to which the routing bridge belongs, and if yes, determine the Whether the system identifier of the sending device of the link state packet is in the group member information list of the group to which the routing bridge belongs, and if not, the second unit determines that the device group of the sending device with the link state packet occurs. Identifier conflict.
  • the group information of the routing bridge group further includes: priority information of the routing bridge group to which the sending device of the link state packet belongs,
  • the routing bridge further includes:
  • a third module configured to determine, at the second unit, a transmitting device of the link state packet After the device group identifier conflict occurs, determining, according to the priority information of the routing bridge group to which the sending device of the link state packet belongs, such as determining the priority of the routing bridge group to which the routing bridge belongs If the priority of the routing bridge group to which the link state packet belongs is high, the packet is encapsulated with the group alias of the routing bridge group to which the routing bridge belongs. Otherwise, the routing bridge itself is discarded. The group alias of the routing bridge group encapsulates the packet.
  • the routing bridge obtains the group information of the routing bridge group to which the routing bridge belongs: the routing bridge acquires the group alias of the routing bridge group to which the routing bridge group belongs, the group member device information, and the priority of the routing bridge group to which the routing bridge belongs. information.
  • the first module after the step of acquiring the group information of the routing bridge group to which the routing bridge belongs, is further configured to flood the link state packet generated by the routing bridge itself to the multi-link transparent mutual Connected to the network, the link state packet includes: a group alias of the routing bridge group to which the routing bridge belongs, priority information, and information of the routing bridge.
  • the present invention provides a method for processing device group identifier conflicts in a network and a routing bridge, which can solve the problem of device identifier conflicts in the network.
  • the application scenario of the present invention is not reflected in the TRILL basic protocol.
  • Extension of the subsequent application of the TRILL protocol, the present invention is a solution proposed based on a problem arising from a new application scenario.

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Abstract

本发明提供一种处理网络中设备组标识符冲突的方法及路由网桥,该方法包括:路由网桥获取其所属路由网桥组的组信息;所述路由网桥接收到其他路由网桥的链路状态包后,通过比较所述链路状态包中携带的路由网桥组的组信息来检测是否发生设备组标识符冲突。通过本发明可以解决网络中设备标识符冲突的问题。

Description

一种处理网络中设备组标识符冲突的方法和路由网桥
技术领域
本发明涉及网络通信技术, 更具体的说, 涉及一种在 TRILL网络中, 提 供一种处理网络中设备组标识符冲突的方法和路由网桥。
背景技术
多链接透明互连 ( Transparent Interconnection over Lots of Links, 简称 TRILL ) , 是 IETF (互联网工程任务组)推荐的连接层(L2 ) 网络标准, 用 于解决大型数据中心中 STP ( Spanning Tree protocol, 生成树协议 ) 的不足。 在 L2网络中, STP通过阻塞冗余链路来避免环路, 但同时也造成了冗余链路 带宽的浪费(被阻塞)。 TRILL通过将 IS-IS( Intermediate System to Intermediate System, 中间系统到中间系统)路由协议引入 L2网络, 解决了 L2环路问题, 同时保留了 L2多路径(或称为 ECMP ( Equivalent Cost Multiple Path, 等价多 路径) ) 。
在 TRILL网络中, 运行 TRILL协议的设备称为 RBridge (路由网桥) , 并由 Nickname (别名)唯一标识一台 RBridge。 在 TRILL网络的入口, 负责 将端设备 ( End Station ) 的原始数据帧封装成 TRILL格式(即在原始数据帧 前面添加 TRILL头和外部帧头, TRILL头中主要包括 TRILL网络入口和出口 路由网桥的 Nickname和跳数)并注入 TRILL 网络的路由网桥称为 Ingress RBridge (入口路由网桥) ; 在 TRILL网络的出口, 负责将 TRILL数据帧解 封为原始数据帧并转发给端设备的路由网桥称为 Egress RBridge (出口路由网 桥) , 同时 Egress RBridge还会学习该原始帧是从哪个 Ingress RBridge导入 TRILL网络的, 并形成 MAC ( Media Access Control, 媒体接入控制)信息表 {D MAC , Ingress— Nickname , }。
为了避免环路, 在 TRILL网络的边界, 在任何一个 VLAN ( Virtual Local Area Network , 虚拟局域网) 内只能由一个 RBridge为一个端系统提供服务, 这个 RBridge称为这个端系统的服务提供者, 比如在共享链路上的 VLAN-x 指定转发者(Appointed Forwarder, 简称 AF ) 。 这种规定虽然能有效的避免 环路, 但是也带来了一些问题, 比如: 共享链路上 AF切换后, 带来了远端 Egress上某些 MAC表项中 Ingress— Nickname的变化,如果变化频繁,还会带 来 Ingress_Nickname的 flip-flop (振荡 ) 问题; 当端系统通过点对点链路多归 属( Multi-homing,比如:通过链路聚合组( Link Aggregation Group,简称 LAG ) ) 到多个 RBridge上时, 为了避免弓 I起远端 RBridge上 MAC的 flip-flop问题, 这些链路只能工作在 Active-Standby (主备)模式, 从而造成了带宽浪费, 难 以满足高性能数据中心的高吞吐量和高可靠性的需求。
为此, TRILL工作组提出了路由网桥组( RBridge Grou , 简称 RBG )或 称为虚拟路由网桥 ( Virtual RBridge, 简称 RBv ) 的概念。 在一个 RBv内, 组员共享一个 Nickname, 称为组 Nickname, 在转发数据帧时, 组员路由网桥 用组 Nickname而不是自己的设备 Nickname来完成原始数据的 TRILL封装, 从而打破了上述规定并避免了 flip-flop问题。 在控制层面, RBv会在 TRILL 网络中通告自己的组 Nickname,从而帮助其他 RBridge学习通往该 RBv的路 径。
RBv的 Nickname在某些应用场景下可以由成员 RBridge 自动从 TRILL 网络中获取, 比如: 共享链路; 而某些场景下只能由网络管理员手工配置, 比如: LAG应用中。 但无论如何, RBG的 Nickname必须同时满足如下两项 原则: 1 ) 不同的 RBv之间组 Nickname必须不能相同; 2 ) 同一个 RBv内, 不同的成员之间组 Nickname必须相同。违反第一条原则会带来数据帧转发错 误, 引起 ^艮文丟失, 比如: 在图 1中 RBvl、 RBv2分别属于不同的组织, 如 果它们的组 Nickname相同,可能会导致 H3发往 HI的报文被 RB5路由到 RBv2 中, 形成转发黑洞。 违反第二条原则就会带来 MAC的 flip-flop问题。
由于上述第二条原则打破了 TRILL协议中不同的 RBridge必须具有不同 Nickname的限制 , 原有的 Nickname冲突检测方法不适合检测 RBv组名冲突 检测问题。
但随着配置管理人员添加新的 RBv或网络拓朴的变化, 难以避免 RBv 之间的组 Nickname冲突的情况。 比如: 启用 RBv的共享链路断裂成两部分, 或者两个含有 RBv标识符相同的 TRILL网络的融合。 发明内容
本发明要解决的技术问题是提供一种处理网络中设备组标识符冲突的方 法及设备, 以解决网络中设备组标识符冲突的问题。
为了解决上述技术问题, 本发明提供了一种处理网络中设备组标识符冲 突的方法,包括:
路由网桥获取其所属路由网桥组的组信息;
所述路由网桥接收到其他路由网桥的链路状态包后, 通过比较所述链路 状态包中携带的路由网桥组的组信息来检测是否发生设备组标识符冲突。
上述方法还具有下面特点:
所述通过比较所述链路状态包中携带的路由网桥组的组信息来检测是否 发生设备组标识符冲突的步骤包括:
所述路由网桥解析所述链路状态包, 获取所述链路状态包中携带的路由 网桥组的组信息, 所述路由网桥组的组信息包括: 所述链路状态包的发送设 备的别名、 系统标识和所属路由网桥组的组别名;
所述路由网桥判断所述链路状态包的发送设备所属路由网桥组的组别名 与所述路由网桥自身所属路由网桥组的组别名是否相同, 如相同, 则判断所 述链路状态包的发送设备的系统标识是否在所述路由网桥自身所属组的组员 生设备组标识符冲突。
上述方法还具有下面特点: 所述路由网桥组的组信息还包括: 所述链路 状态包的发送设备所属路由网桥组的优先级信息, 突的步骤之后, 还包括:
所述路由网桥根据所述链路状态包的发送设备所属路由网桥组的优先级 信息进行判断, 如判断所述路由网桥自身所属的路由网桥组的优先级比所述 链路状态包的发送设备所属路由网桥组的优先级高, 则继续使用所述路由网 桥自身所属的路由网桥组的组别名封装报文, 否则, 放弃使用所述路由网桥 自身所属的路由网桥组的组别名封装报文。 上述方法还具有下面特点: 所述路由网桥获取其所属路由网桥组的组信 息的步骤包括:
所述路由网桥获取其所属路由网桥组的组别名、 组员设备信息和所属路 由网桥组的优先级信息。
上述方法还具有下面特点: 在所述路由网桥获取其所属路由网桥组的组 信息的步骤之后, 还包括:
所述路由网桥将自身产生的链路状态包泛洪到多链接透明互连网络, 所 述链路状态包包括: 所述路由网桥所属的路由网桥组的组别名、 优先级信息 和所述路由网桥的信息。
为了解决上述问题, 本发明还提供了一种路由网桥, 包括:
第一模块, 其设置成获取所述路由网桥所属路由网桥组的组信息; 第二模块, 其设置成接收到链路状态包后, 通过比较所述链路状态包中 携带的路由网桥组的组信息来检测是否发生设备组标识符冲突。
上述路由网桥还具有下面特点: 所述第二模块包括:
第一单元, 其设置成解析所述链路状态包, 获取所述链路状态包中携带 的路由网桥组的组信息, 所述路由网桥组的组信息包括: 所述链路状态包的 发送设备的别名、 系统标识和所属路由网桥组的组别名;
第二单元, 其设置成判断所述链路状态包的发送设备所属路由网桥组的 组别名与所述路由网桥自身所属路由网桥组的组别名是否相同, 如相同, 则 判断所述链路状态包的发送设备的系统标识是否在所述路由网桥自身所属组 的组员信息列表中, 如不在, 所述第二单元则判定与所述链路状态包的发送 设备发生设备组标识符冲突。
上述路由网桥还具有下面特点:
所述路由网桥组的组信息还包括: 所述链路状态包的发送设备所属路由 网桥组的优先级信息,
所述路由网桥还包括:
第三模块, 其设置成在所述第二单元判定与所述链路状态包的发送设备 发生设备组标识符冲突之后, 根据所述链路状态包的发送设备所属路由网桥 组的优先级信息进行判断, 如判断所述路由网桥自身所属的路由网桥组的优 先级比所述链路状态包的发送设备所属路由网桥组的优先级高, 则继续使用 所述路由网桥自身所属的路由网桥组的组别名封装报文, 否则, 放弃使用所 述路由网桥自身所属的路由网桥组的组别名封装报文。
上述路由网桥还具有下面特点: 所述路由网桥通过如下方式获取其所属 路由网桥组的组信息:
所述路由网桥获取其所属路由网桥组的组别名、 组员设备信息和所属路 由网桥组的优先级信息。
上述路由网桥还具有下面特点:
所述第一模块, 在获取所述路由网桥所属路由网桥组的组信息的步骤之 后还设置成, 将所述路由网桥自身产生的链路状态包泛洪到多链接透明互连 网络, 所述链路状态包包括: 所述路由网桥所属的路由网桥组的组别名、 优 先级信息和所述路由网桥的信息。
综上所述, 本发明提供一种处理网络中设备组标识符冲突的方法及路由 网桥, 可以解决网络中设备标识符冲突的问题,本发明的应用场景在 TRILL 基本协议中没有体现, 是 TRILL协议后续应用的扩展, 本发明是基于新的应 用场景产生的问题而提出的解决方案。 附图概述
此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部 分, 本发明的示意性附图及其说明用于解释本发明, 并不构成对本发明的不 当限定。 在附图中:
图 1为含有 LAG的 TRILL网络拓朴结构的示意图;
图 2为含有 LAN的 TRILL网络拓朴结构的示意图;
图 3为本发明实施例的处理网络中设备标识符冲突的方法的流程图; 图 4为本发明实施例的路由网桥的示意图。 本发明的较佳实施方式
为使本发明的目的、 技术方案和优点更加清楚明白, 下文中将结合附图 对本发明的实施例进行详细说明。 需要说明的是, 在不冲突的情况下, 本申 请中的实施例及实施例中的特征可以相互任意组合。
图 3为本发明实施例的处理网络中设备标识符冲突的方法的流程图, 如 图 3所示, 包括下面步骤:
S 11、 路由网桥获取其所属路由网桥组的组信息;
512、所述路由网桥接收到链路状态包后,通过比较所述链路状态包中携 带的路由网桥组的组信息来检测是否发生设备组标识符冲突。 突之后, 本实施例的方法还可以包括:
513、所述路由网桥根据所述链路状态包的发送设备所属路由网桥组的优 先级信息进行判断, 如判断所述路由网桥自身所属的路由网桥组的优先级比 所述链路状态包的发送设备所属路由网桥组的优先级高, 则继续使用所述路 由网桥自身所属的路由网桥组的组别名封装报文, 否则, 放弃使用所述路由 网桥自身所属的路由网桥组的组别名封装报文。
本实施例中的组员: 即组成设备组的成员设备, 比如构成 RBv的成员 RBridge;
组员信息主要包括,路由网桥加入的 RBv的组 Nickname,该组员在组内 的优先级以及该组员的系统标识符( System ID )等;
设备组的优先级: 所述设备组的所有成员设备中, 优先级最大的组员的 优先级和 System ID为所述设备组的优先级;如果所述设备组中存在两个或两 个以上的最高优先级的组员, 则所述组的优先级为这些相同优先级的成员中 具有最大 System ID的成员的优先级和 System ID。
根据应用场景不同, 组员信息的获取方式可分为两大类: 动态获取方式 和静态配置方式, 如下:
如果组员之间能够通过组内消息交互发现组员, 则釆用动态发现方式获 现并获取组员信息;
如果组员之间不能通过组内消息交换发现组员, 则通告手工配置方式, 在组员上配置该组内其他组员信息, 比如, 在 LAG和 Multi-homing等应用场 景下。
RBv组的组员在自己产生的链路状态包( Link State Packet, 简称 LSP ) 中携带自己所属的 RBv信息并将该 LSP通告至整个 TRILL网络。 当设备收 到这些 LSP报文时,通过比较报文中 RBv信息来确认是否发生了设备组标识 符冲突, 具体如下:
解析 LSP, 获取发送者所属组的 Nickname, 以及优先级和 System ID等 信息, 如果这些 Nickname和自己所属组的 Nickname不同, 则进一步检查: LSP的发送者的 System ID是否在自己所属的组员列表中,如果是, 则发生了 同一个设备组内不同组员之间组标识符不一致的情况; 如果不是, 则无标识 符冲突;
如果上述 Nickname和自己所属组的 Nickname相同, 进一步验证: 发送 者的 System ID是否在自己所属组的组员信息列表中,如果在列表中,则不认 为标识符发生了冲突, 如果不在列表中, 则认为标识符发生了冲突。
当发现标识符发生了冲突以后,则通过比较 LSP发送者所属 RBv组和自 己所在的 RBv组的优劣来决定所述组是继续使用该标识符还是重新选择另一 个标识符, 具体如下:
如果 LSP发送者所属 RBv组的优先级和 System ID没有所述组的优先级 和 System ID大, 则所述设备组继续使用该组 Nickname; 否则, 所述设备组 放弃该 Nickname并重新获取一个可用 Nickname作为组 Nickname。 进而, ^口 果无法获取新的组 Nickname , 则所述设备组无效, 组员不再用所述组 Nickname -†装才艮文。
组内标识符不一致的处理: 为了避免引起远端路由网桥转发表中 MAC 条目中 Egress— Nickname的 flip-flop ,组 Nickname不一致的设备被认为力。入了 不同设备组, 属于不同设备组的设备不能为同一个端系统提供 TRILL服务。 为此, 优先级高的设备组工作在 Active模式, 优先级低的设备组工作在 Standby模式。
与现有技术相比较, 本发明实施例中的应用场景在 TRILL基本协议中没 有体现, 是 TRILL协议后续应用的扩展, 本发明是基于新的应用场景产生的 问题而提出的解决方案。
下面结合附图对本发明的软件系统组成进行说明。
在图 1中, 借助链路聚合组( LAG ) , HI通过 RBI和 RB2接入 TRILL 网络; H2通过 RB3和 RB4接入 TRILL网络; H3通过 RB5直接接入 TRILL。 当 HI和 H3或者 H2和 H3通讯时, 为了避免引起 RB5上 MAC地址漂移 ( flip-flop ) , RBI和 RB2力口人了 RBvl组, RB3和 RB4力口人了 RBv2组。
实施例一
在 LAG应用场景下,路由网桥组 RBvl的成员设备 RB1发送的保活报文 无法通过组内链路达到 RB2 ,反之亦然,因此可以通过手工配置的方式使 RB 1 和 RB2相互知道对方是自己在 RBvl中的合法组员, 以及在该组中的优先级 和 System ID。 其配置过程如下:
步骤 101 : 在 RB1上通过查看链路状态数据库, 获取当前 TRILL网络中 可用的 Nickname , 从中选择一个作为 RBvl的组 Nickname , 比如 Nickl; 步骤 102: 在 RB1上, 以 Nickl为组标识符创建路由网桥组 RBvl , 将它 的下行端口 (通往 HI )力口入到 RBvl ;
步骤 103: 在 RB1上, 配置 RB2是 RB1在 RBvl中的合法组员, 该组员 的优先级为 Pril— 2, 系统 ID为 System 1 2;
步骤 104: 在 RB2上,按照步骤 102到 103的方法,将它的下行端口(通 往 HI )添加到 RBvl中, 组名为 Nickl; 并且配置 RB1为 RB2在 RBvl中的 合法组员, 该组员的优先级为 Pril— 1 , 系统 ID为 System 1—1;
步骤 105: 在 RB1上, RB1通过对比自己与 RBvl中其他组员的优先级 和 System ID,可以知道 RBvl组中的优先级和组系统 ID。假设: Pril_KPril_2, 并且 Systeml— Systeml— 2, 则 RBvl的优先级为 Pril— 2, 系统 ID为 System 1—2。 同理, 通过和组员的参数进行比较, RB2也可获悉 RBvl 的优先级为 Pri 1 _2 , 系统 ID为 System 1 _2。 通过上述配置, 在 RB1 和 RB2 的下行端口上创建了虚拟路由网桥组 RBvl , 并指定了该组内的合法组员以及该组的优先级和系统 ID。这些信息可 以用于后续路由网桥组 Nickname之间的冲突检测。
按照同样的方法, 可以在 RB3和 RB4上创建组名为 Nick2的 RBv2 , 在 该路由网桥组中, RB3的优先级为 Pri2_l , 系统 ID为 System2— 1 , RB4的优 先级为 Pri2— 2 , 系统 ID 为 System2— 2; 假设: Pri2— l=Pri2— 2 , 并且 System2_l>System2_2, 则 RBv2的优先级为 Pri2— 1 , 系统 ID为 System2— 1。
下面以实施二为例, 从 RB1 的角度说明一下 RBvl 和 RBv2 之间的 Nickname冲突检测。
实施例二
步骤 201: RB 1和 RB2分别在自己的 LSP中宣称自己加入了组名为 Nickl 的路由网桥组, 以及自己所在组的优先级和 System ID, 并将该 LSP泛洪到 TRILL网络中去; RB3和 RB4泛洪 LSP并宣称自己加入了组名为 Nick2的路 由网桥组以及所在组的优先级和系统 ID;
步骤 202: RB1 收到 RB2的 LSP后, 发现其组 Nickname和自己的组
Nickname相同, 进一步在组名为 Nickl的虚拟路由网桥组组员列表中检索该 LSP的通告者 RB2, 结果发现 RB2是自己在 RBvl中的合法组员, 从而判断 与 RB2之间不存在组 Nickname冲突;
步骤 203: RB1收到 RB3或 RB4发送来的 LSP后, 通过 文解析知悉 RB3或 RB4加入了组名为 Nick2的虚拟路由网桥组。 如果 Nick2≠Nickl , 则 无组名冲突; 如果 Nick2=Nickl , 则进一步查询 RB3或 RB4是否是自己在组 名为 Nickl 的路由网桥组 RBvl 内的合法组员, 结果发现不是合法组员, 从 而断定发生了组名冲突。
下面以实施例三为例 , 从 RB1的角度说明一下 RBvl和 RBv2之间的组 Nickname冲突处理。
实施例三
步骤 301: RB1收到 RB3发送来的 LSP后, 发现发生了组名冲突, 则从 该 LSP中获取 RBv2的优先级 Pri2— 1和 System2— 1 ,并与本地保存的 RBvl的 优先级和系统 ID (及 Pril_2和 Systeml_2 )进行比较, 如果发现 RBv2的参 数优于 RBvl 的参数 ( 即 Pri2— l>Pril— 2 或者 Pri2— l=Pril— 2 , 但 System2_l>Systeml_2 ) , 则 RBI不再使用 Nickl对上行报文进行 TRILL封 装; 否则 RB1继续进行使用 Nickl对上行 文进行 TRILL封装;
步骤 302: 当 RB1收到 RB4发送来的 LSP后, 如果发现了组名冲突, 也 做类似判断, 并根据判断结果决定继续使用还是终止使用 Nickl对上行报文 进行 TRILL封装。
在图 2中, RBI , RB2, RB3和 RB4以及 HI和 H2都链接到一个共享链 路上, 其中任何一个路由网桥发送到该链路上的保活报文(比如 Hello报文) 可以被链接到该链路上的其他路由网桥接收到。 在这种应用场景下, 路由网 桥组的创建要简单的多, 并且可以实现组员信息的动态获取以及组名冲突的 自动处理。 下面分别用实施例予以描述。
实施例四:
步骤 401: 分别在 RB 1、 RB2、 RB3和 RB4的连接该共享链路的接口上 开启启用虚拟路由网桥组功能,这些路由网桥便在自己的 Hello报文中宣称自 己支持并开启了该功能, 此外还携带自己在该链路上的优先级和 System ID 等信息;
步骤 402: 通告解析从该链路上收集到的 Hello报文, 这 4个路由网桥可 以推选出一个成员 (比如优先级最高的成员)代表该网桥组从 TRILL网络中 自动申请一个可用的 Nickname (比如 Nick— i )作为该组的 Nickname , 并通告 Hello报文给其他成员。
步骤 403: 收到组名通告后, 这 4个组员就可以分别在自己的 LSP中发 布自己加入了虚拟路由网桥组 Nick, 并知晓该组的优先级和系统 ID (即优先 级最高的成员的优先级和 System ID ) 。
假设 RBI是该共享链路上被推选出的成员设备, 下面以实施例说明一下
RB1对虚拟路由网桥组冲突的处理。
实施例五
步骤 501 :当 RB1发现其他路由网桥组的组名和自己所在组发生了冲突, 首先通过优先级比较决定本地组是否需要重新选择组 Nickname, 如果需要重 新选择组名, 继续步骤 502, 否则转至步骤 504;
步骤 502: 从 TRILL网络中重新申请一个可用的 Nickname作为组名, 并 在自己的 Hello报文中重新发布该 Nickname , 比如 NickJ;
步骤 503: 该链路上其他路由网桥收到该 Hello报文后, 用 NickJ替代
Nick— i作为新的组名, 并在自己的 LSP中重新发布该组名, 并用新的组名对 上行报文进行 TRILL封装, 转至步骤 505;
步骤 504: 继续使用 Nick— i作为该路由网桥组的组名;
步骤 505: 结束。
图 4为本发明实施例的路由网桥的示意图, 如图 4所示, 本实施例的路 由网桥包括:
第一模块, 其设置成获取所述路由网桥所属路由网桥组的组信息; 第二模块, 其设置成接收到链路状态包后, 通过比较所述链路状态包中 携带的路由网桥组的组信息来检测是否发生设备组标识符冲突。
其中, 所述第二模块包括:
第一单元, 其设置成解析所述链路状态包, 获取所述链路状态包中携带 的路由网桥组的组信息, 该路由网桥组的组信息包括: 所述链路状态包的发 送设备的别名、 系统标识和所属路由网桥组的组别名;
第二单元, 其设置成判断所述链路状态包的发送设备所属路由网桥组的 组别名与所述路由网桥自身所属路由网桥组的组别名是否相同, 如相同, 则 判断所述链路状态包的发送设备的系统标识是否在所述路由网桥自身所属组 的组员信息列表中, 如不在, 所述第二单元则判定与所述链路状态包的发送 设备发生设备组标识符冲突。
所述路由网桥组的组信息还包括: 所述链路状态包的发送设备所属路由 网桥组的优先级信息,
所述路由网桥还包括:
第三模块, 其设置成在所述第二单元判定与所述链路状态包的发送设备 发生设备组标识符冲突之后, 根据所述链路状态包的发送设备所属路由网桥 组的优先级信息进行判断, 如判断所述路由网桥自身所属的路由网桥组的优 先级比所述链路状态包的发送设备所属路由网桥组的优先级高, 则继续使用 所述路由网桥自身所属的路由网桥组的组别名封装报文, 否则, 放弃使用所 述路由网桥自身所属的路由网桥组的组别名封装报文。
其中, 所述路由网桥通过如下方式获取其所属路由网桥组的组信息: 所述路由网桥获取其所属路由网桥组的组别名、 组员设备信息和所属路 由网桥组的优先级信息。
其中, 所述第一模块, 在获取所述路由网桥所属路由网桥组的组信息的 步骤之后还设置成, 将所述路由网桥自身产生的链路状态包泛洪到多链接透 明互连网络, 该链路状态包包括: 所述路由网桥所属的路由网桥组的组别名、 优先级信息和所述路由网桥的信息。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
以上仅为本发明的优选实施例, 当然, 本发明还可有其他多种实施例, 在不背离本发明精神及其实质的情况下, 熟悉本领域的技术人员可根据本发 明作出各种相应的改变和变形, 但这些相应的改变和变形都应属于本发明所 附的权利要求的保护范围。
工业实用性
综上所述, 本发明提供一种处理网络中设备组标识符冲突的方法及路由 网桥, 可以解决网络中设备标识符冲突的问题,本发明的应用场景在 TRILL 基本协议中没有体现, 是 TRILL协议后续应用的扩展, 本发明是基于新的应 用场景产生的问题而提出的解决方案。

Claims

权 利 要 求 书
1、 一种处理网络中设备组标识符冲突的方法,包括:
路由网桥获取其所属路由网桥组的组信息;
所述路由网桥接收到其他路由网桥的链路状态包后, 通过比较所述链路 状态包中携带的路由网桥组的组信息来检测是否发生设备组标识符冲突。
2、 如权利要求 1所述的方法, 其中: 所述通过比较所述链路状态包中携 带的路由网桥组的组信息来检测是否发生设备组标识符冲突的步骤包括: 所述路由网桥解析所述链路状态包, 获取所述链路状态包中携带的路由 网桥组的组信息, 所述路由网桥组的组信息包括: 所述链路状态包的发送设 备的别名、 系统标识和所属路由网桥组的组别名;
所述路由网桥判断所述链路状态包的发送设备所属路由网桥组的组别名 与所述路由网桥自身所属路由网桥组的组别名是否相同, 如相同, 则判断所 述链路状态包的发送设备的系统标识是否在所述路由网桥自身所属组的组员 生设备组标识符冲突。
3、 如权利要求 2所述的方法, 其中: 所述路由网桥组的组信息还包括: 所述链路状态包的发送设备所属路由网桥组的优先级信息, 突的步骤之后, 还包括:
所述路由网桥根据所述链路状态包的发送设备所属路由网桥组的优先级 信息进行判断, 如判断所述路由网桥自身所属的路由网桥组的优先级比所述 链路状态包的发送设备所属路由网桥组的优先级高, 则继续使用所述路由网 桥自身所属的路由网桥组的组别名封装报文, 否则, 放弃使用所述路由网桥 自身所属的路由网桥组的组别名封装报文。
4、 如权利要求 1所述的方法, 其中: 所述路由网桥获取其所属路由网桥 组的组信息的步骤包括:
所述路由网桥获取其所属路由网桥组的组别名、 组员设备信息和所属路 由网桥组的优先级信息。
5、 如权利要求 1-4任一项所述的方法, 其中: 在所述路由网桥获取其所 属路由网桥组的组信息的步骤之后, 还包括:
所述路由网桥将自身产生的链路状态包泛洪到多链接透明互连网络, 所 述链路状态包包括: 所述路由网桥所属的路由网桥组的组别名、 优先级信息 和所述路由网桥的信息。
6、 一种路由网桥, 包括:
第一模块, 其设置成获取所述路由网桥所属路由网桥组的组信息; 第二模块, 其设置成接收到链路状态包后, 通过比较所述链路状态包中 携带的路由网桥组的组信息来检测是否发生设备组标识符冲突。
7、 如权利要求 6所述的路由网桥, 其中: 所述第二模块包括: 第一单元, 其设置成解析所述链路状态包, 获取所述链路状态包中携带 的路由网桥组的组信息, 所述路由网桥组的组信息包括: 所述链路状态包的 发送设备的别名、 系统标识和所属路由网桥组的组别名;
第二单元, 其设置成判断所述链路状态包的发送设备所属路由网桥组的 组别名与所述路由网桥自身所属路由网桥组的组别名是否相同, 如相同, 则 判断所述链路状态包的发送设备的系统标识是否在所述路由网桥自身所属组 的组员信息列表中, 如不在, 所述第二单元则判定与所述链路状态包的发送 设备发生设备组标识符冲突。
8、 如权利要求 7所述的路由网桥, 其中: 所述路由网桥组的组信息还包 括: 所述链路状态包的发送设备所属路由网桥组的优先级信息,
所述路由网桥还包括:
第三模块, 其设置成在所述第二单元判定与所述链路状态包的发送设备 发生设备组标识符冲突之后, 根据所述链路状态包的发送设备所属路由网桥 组的优先级信息进行判断, 如判断所述路由网桥自身所属的路由网桥组的优 先级比所述链路状态包的发送设备所属路由网桥组的优先级高, 则继续使用 所述路由网桥自身所属的路由网桥组的组别名封装报文, 否则, 放弃使用所 述路由网桥自身所属的路由网桥组的组别名封装报文。
9、 如权利要求 6所述的路由网桥, 其中: 所述路由网桥通过如下方式获 取其所属路由网桥组的组信息:
所述路由网桥获取其所属路由网桥组的组别名、 组员设备信息和所属路 由网桥组的优先级信息。
10、 如权利要求 1-4任一项所述的路由网桥, 其中:
所述第一模块, 在获取所述路由网桥所属路由网桥组的组信息的步骤之 后还设置成, 将所述路由网桥自身产生的链路状态包泛洪到多链接透明互连 网络, 所述链路状态包包括: 所述路由网桥所属的路由网桥组的组别名、 优 先级信息和所述路由网桥的信息。
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