CN101056268A - Method and Router for Realizing Fast Rerouting - Google Patents

Abstract

The invention relates to the technical field of network communication, and discloses a method for setting a local protection node, a method for realizing rapid rerouting and a router, wherein the method for realizing rapid rerouting comprises the following steps: receiving a display route object, wherein the display route object comprises a configuration item for setting a local protection node; analyzing the configuration item of the local protection node in the display routing object, and setting whether the current node is the local protection node; when the current node is set as a local protection node, the protected link passing through the current node is subjected to fast reroute protection. The invention can carry out fast rerouting to the current node when the protected tunnel or LSP path has a fault, thereby protecting the network flow.

Description

Translated fromChinese

实现快速重路由的方法和路由器Method and Router for Realizing Fast Rerouting

技术领域technical field

本发明涉及网络通信技术领域，尤其涉及设置本地保护节点方法、实现快速重路由的方法和路由器。The invention relates to the technical field of network communication, in particular to a method for setting a local protection node, a method for realizing fast rerouting and a router.

背景技术Background technique

快速重路由(FRR，Fast Reroute)是多协议标签交换流量工程(MPLS TE，Multiprotocol Label Switching Traffic Engineering)中用于形成局部保护的机制，当某一段标签交换路径(LSP，Label Switch Path)失效时，在发现失败的节点上进行保护动作，将流量重路由到保护路径上，这样可以最大程度的保护网络流量，使得数据传输不至于发生中断。由于将流量引到保护路径上的动作都是标签交换路由器(LSR，Label Switch Router)的本地动作，因此将这个形成FRR保护并且可以在故障时将流量进行切换的路由器称为本地保护节点(PLR，Point of Local Repair)，也是FRR应用里保护路径的头节点。Fast Reroute (FRR, Fast Reroute) is a mechanism used to form local protection in Multiprotocol Label Switching Traffic Engineering (MPLS TE, Multiprotocol Label Switching Traffic Engineering). When a section of Label Switching Path (LSP, Label Switch Path) fails , take a protection action on the node where the discovery fails, and reroute the traffic to the protection path, so that the network traffic can be protected to the greatest extent, so that the data transmission will not be interrupted. Since the action of directing traffic to the protection path is the local action of the Label Switch Router (LSR, Label Switch Router), this router that forms FRR protection and can switch traffic in the event of a failure is called a local protection node (PLR). , Point of Local Repair), which is also the head node of the protection path in the FRR application.

现有技术的快速重路由有两种保护方式，一种是简易备份(FacilityBackup)方式，另一种是一对一备份(One-to-one Backup)方式。简易备份方式通过创建备份隧道(backup tunnel)来对被保护的LSP进行保护，一对一备份方式通过直接创建备份LSP来对被保护的LSP进行保护。There are two protection methods in the prior art fast rerouting, one is a simple backup (Facility Backup) method, and the other is a one-to-one backup (One-to-one Backup) method. The simple backup mode protects the protected LSP by creating a backup tunnel, and the one-to-one backup mode protects the protected LSP by directly creating a backup LSP.

上述现有快速重路由保护技术，对于被保护的LSP，一旦该隧道要求快速重路由保护，在该LSP沿途经过的所有节点都可以作为PLR节点，使得被保护LSP与一条备份隧道进行相互绑定。当对被保护的链路进行FRR保护时，具体的保护策略需要在所有沿途节点上单独配置，给应用部署带来麻烦。In the above-mentioned existing fast rerouting protection technology, for the protected LSP, once the tunnel requires fast rerouting protection, all nodes passing along the LSP can be used as PLR nodes, so that the protected LSP and a backup tunnel are bound to each other . When performing FRR protection on the protected link, the specific protection strategy needs to be configured separately on all nodes along the route, which brings troubles to application deployment.

发明内容Contents of the invention

本发明实施例提供一种设置本地保护节点方法，该方法在配置具体的被保护链路时设置该链路上的本地保护节点。An embodiment of the present invention provides a method for setting a local protection node. When configuring a specific protected link, the method sets the local protection node on the link.

本发明实施例还提供一种实现快速重路由的方法与路由器，该方法与路由器能够对具体的被保护链路设置本地保护节点并实现快速重路由。The embodiment of the present invention also provides a method and a router for implementing fast rerouting. The method and the router can set a local protection node for a specific link to be protected and realize fast rerouting.

所述设置本地保护节点方法为：The method for setting the local protection node is as follows:

接收显示路由对象，所述显示路由对象包含设置本地保护节点的配置项；Receive a display routing object, the display routing object includes configuration items for setting the local protection node;

对所述显示路由对象中设置本地保护节点的配置项进行解析，设置当前节点是否为本地保护节点。Analyzing the configuration item of setting the local protection node in the display routing object, and setting whether the current node is a local protection node.

所述实现快速重路由的方法为：The method for realizing fast rerouting is as follows:

接收显示路由对象，所述显示路由对象包含设置本地保护节点的配置项；Receive a display routing object, the display routing object includes configuration items for setting the local protection node;

对所述显示路由对象中设置本地保护节点的配置项进行解析，设置当前节点是否为本地保护节点；Analyzing the configuration item for setting the local protection node in the display routing object, and setting whether the current node is a local protection node;

在当前节点设置为本地保护节点时，对经过所述当前节点的被保护链路进行快速重路由保护。When the current node is set as a local protection node, fast rerouting protection is performed on the protected links passing through the current node.

所述路由器包括：The router includes:

消息接收单元，用于接收显示路由对象，所述显示路由对象包含设置本地保护节点的配置项；A message receiving unit, configured to receive a display routing object, where the display routing object includes configuration items for setting a local protection node;

消息处理单元，用于对接收到的所述显示路由对象中设置本地保护节点的配置项进行解析，并根据解析结果设置当前节点是否为本地保护节点；A message processing unit, configured to analyze the received configuration item of setting the local protection node in the display routing object, and set whether the current node is a local protection node according to the analysis result;

路由单元，用于在当前节点设置为本地保护节点时，对经过所述当前节点的被保护链路进行快速重路由保护。A routing unit, configured to perform fast rerouting protection on the protected link passing through the current node when the current node is set as a local protection node.

以上技术方案可以看出，由于本发明实施例首先获取包含当前节点信息的显示路由对象，然后对该显示路由对象进行解析，并在当前节点是本地保护节点时，对经过所述当前节点的被保护标签交换路径快速重路由，与现有技术相比较，本发明实施例通过对显示路由对象的信息进行解析就可以确定被保护的隧道或LSP沿途所经过的节点是否可以作为PLR节点，并在该节点为PLR节点时对经过所述当前节点的被保护标签交换路径进行快速重路由，这样在被保护的隧道或LSP失效时可以将流量进行快速重路由，进而可以最大程度的保护网络流量，并使数据传输不会发生中断。It can be seen from the above technical solutions that, because the embodiment of the present invention first obtains the display routing object containing the current node information, and then analyzes the display routing object, and when the current node is a local protection node, Fast rerouting of protected label switched paths. Compared with the prior art, the embodiment of the present invention can determine whether the nodes passed by the protected tunnel or LSP along the way can be used as PLR nodes by analyzing the information showing routing objects, and then When the node is a PLR node, fast rerouting is performed on the protected label switching path passing through the current node, so that when the protected tunnel or LSP fails, the traffic can be fast rerouted, and then the network traffic can be protected to the greatest extent. And so that the data transmission will not be interrupted.

另外，本发明实施例收到的显示路由对象包含当前节点是否为本地保护节点的配置项，经过对所述显示路由对象进行解析后就可得知当前节点是否被指定为PLR节点，这样可以指明被保护的LSP或隧道的哪些下游节点可以作为PLR节点，哪些不可以作为PLR节点，可以灵活的对被保护链路进行快速重路由设置。In addition, the display routing object received in the embodiment of the present invention includes the configuration item of whether the current node is a local protection node. After analyzing the display routing object, it can be known whether the current node is designated as a PLR node, which can indicate Which downstream nodes of the protected LSP or tunnel can be used as PLR nodes and which ones cannot be used as PLR nodes can flexibly set fast rerouting for the protected link.

附图说明Description of drawings

图1是本发明实施例在入口节点或传输节点指定PLR列表的时序图；FIG. 1 is a sequence diagram of specifying a PLR list at an ingress node or a transit node according to an embodiment of the present invention;

图2是本发明实施例实现快速重路由的方法流程图；FIG. 2 is a flowchart of a method for implementing fast rerouting according to an embodiment of the present invention;

图3是本发明实施例路由器示意图。Fig. 3 is a schematic diagram of a router according to an embodiment of the present invention.

具体实施方式Detailed ways

首先，对资源预留协议(RSVP，Resource ReSerVation Protocol)的扩展进行介绍，RSVP信令携带的显示路由(ERO，Explicit Route)对象有1字节的预留，本发明实施例通过对保留字节进行扩展，使得RVSP信令到达的每个节点都能识别对应的ERO对象是否允许创建旁路隧道或旁路LSP。First, the extension of the Resource Reservation Protocol (RSVP, Resource ReServation Protocol) is introduced. The explicit routing (ERO, Explicit Route) object carried by RSVP signaling has 1 byte reserved. An extension is performed so that each node to which the RVSP signaling arrives can identify whether the corresponding ERO object allows creation of a bypass tunnel or a bypass LSP.

通常RSVP协议描述的ERO对象由一系列子对象构成，IPv4协议族和IPv6协议族对这些子对象的定义具体可见表1和表2。Usually, the ERO object described by the RSVP protocol is composed of a series of sub-objects. The definitions of these sub-objects by the IPv4 protocol family and the IPv6 protocol family can be seen in Table 1 and Table 2.

0                        7                                 15                                                          31   L   类型   长度   IPv4地址   IPv4地址   长度前缀   保留0 7 15 31 L type length IPv4 address IPv4 address length prefix reserve

                      表1 Table 1

0                        7                                 15                                                         31   L   类型   长度   IPv6地址   IPv6地址   IPv6地址   IPv6地址   IPv6地址   长度前缀   保留0 7 15 31 L type length IPv6 address IPv6 address IPv6 address IPv6 address IPv6 address length prefix reserve

                   表2 Table 2

由表1和表2可知，两种协议都有保留(Resvd)字段，本发明实施例使用该保留字段作为标志，通过设置第一预设值标记当前节点为PLR节点，设置第二预设值标记当前节点为非PLR节点。例如当Resvd字段为第一预设值0时表示设为PLR节点，当Resvd字段为第二预设值0xEE时，表示该节点作为非PLR节点，同时由于该字段默认情况是使用全0值，所以不会对不同厂商的互通带来影响。As can be seen from Table 1 and Table 2, both protocols have a reserved (Resvd) field, the embodiment of the present invention uses this reserved field as a sign, by setting the first preset value to mark the current node as a PLR node, and setting the second preset value Mark the current node as a non-PLR node. For example, when the Resvd field is the first preset value 0, it means that it is set as a PLR node. When the Resvd field is the second preset value 0xEE, it means that the node is a non-PLR node. At the same time, since this field uses all 0 values by default, Therefore, it will not affect the intercommunication of different manufacturers.

参照图1，图1是本发明一实施例在入口节点及传输节点指定PLR列表的时序图，由图1可知，本实施例在入口节点(Ingress)处对显示路由ERO进行配置，并增加显示路由的每跳是否可以作为PLR的配置项，该配置项可以确定使用该ERO的隧道所经过的节点是否可以作为PLR节点，再通过对ERO对象中的保留字段进行解析，从而可以为某个具体隧道指定需要进行FRR保护的节点。Referring to Fig. 1, Fig. 1 is a sequence diagram of specifying a PLR list at an ingress node and a transit node according to an embodiment of the present invention. As can be seen from Fig. 1, the present embodiment configures the display route ERO at the ingress node (Ingress), and adds a display Whether each hop of the route can be used as a PLR configuration item. This configuration item can determine whether the node passing through the tunnel using the ERO can be used as a PLR node. Then, by parsing the reserved fields in the ERO object, it can be used for a specific The tunnel specifies the node to be protected by FRR.

参照图2，图2是本发明一实施例实现快速重路由的方法流程图，具体包括以下步骤：Referring to FIG. 2, FIG. 2 is a flowchart of a method for realizing fast rerouting according to an embodiment of the present invention, which specifically includes the following steps:

步骤201、在入口节点配置显示路由的每一跳，并为显示路由的每一跳指定是否允许作为PLR节点。其中，显示路由标记的是源节点和目的节点之间的路径，显示路由的一跳相当于路径所经过的一个节点。Step 201, configure each hop of the display route on the entry node, and specify whether each hop of the display route is allowed to be a PLR node. Wherein, the displayed routing mark is the path between the source node and the destination node, and one hop of the displayed route is equivalent to a node passed by the path.

在设置每一跳是否允许作为PLR节点需要遵循以下原则：When setting whether each hop is allowed to be a PLR node, the following principles need to be followed:

1)显示路由经过的节点允许被设置为PLR节点，也可以不被设置为PLR节点，其中，显示路由所经过的节点通常被称为被包含(Include)节点。1) The node through which the route is displayed is allowed to be set as a PLR node, or may not be set as a PLR node, wherein the node through which the route is displayed is usually called an Include node.

不经过显示路由的节点通常被称为被排除(Exclude)节点，这些Exclude节点是不能被指定作为PLR节点。Nodes that do not go through explicit routing are usually called excluded (Exclude) nodes, and these Exclude nodes cannot be designated as PLR nodes.

2)、对于Include节点的多个IP地址，如果属于同一节点，需要保证仅使用一个IP地址来指定该节点作为PLR节点。2) For multiple IP addresses of the Include node, if they belong to the same node, it is necessary to ensure that only one IP address is used to designate the node as the PLR node.

步骤202、配置链路。所述链路可为主隧道或被保护的LSP。通过配置ERO对象指定该链路的某个节点是否作为PLR节点。其中，主隧道为需要被保护的隧道。Step 202, configure the link. The link can be a main tunnel or a protected LSP. Specify whether a node of the link is a PLR node by configuring the ERO object. Wherein, the main tunnel is a tunnel to be protected.

步骤203、对ERO对象进行扩展，将ERO对象的保留字段作为标志位，用来指明已配置显示路由的每跳是否可以作为PLR节点，例如，保留字段的值为0x0，表示该跳允许作为PLR节点，如果保留字段的值为0xEE，表示该跳不允许作为PLR节点。Step 203, expand the ERO object, and use the reserved field of the ERO object as a flag to indicate whether each hop of the configured display route can be used as a PLR node. For example, the value of the reserved field is 0x0, indicating that the hop is allowed to be used as a PLR Node, if the value of the reserved field is 0xEE, it means that the hop is not allowed to be a PLR node.

步骤204、在入口节点处由控制层面将配置的ERO对象下发给RSVP信令。RSVP信令通过路径(PATH)消息携带的ERO对象将这些信息带给隧道上的所有节点，以保证下游所有节点上都能获取这些数据。。Step 204, at the ingress node, the control plane sends the configured ERO object to RSVP signaling. RSVP signaling brings this information to all nodes on the tunnel through the ERO object carried in the path (PATH) message, so as to ensure that all downstream nodes can obtain the data. .

步骤205、下游节点对收到的ERO对象进行处理。下游节点从ERO对象中获取该节点对应的信息，所述节点可以为入口节点或传输节点。Step 205, the downstream node processes the received ERO object. The downstream node acquires information corresponding to the node from the ERO object, and the node may be an ingress node or a transmission node.

步骤206、判断入口节点或传输节点是否被指定为PLR，如果是，执行步骤207，否则，RSVP信令将通知当前节点的控制层面在该节点不需对该主隧道进行FRR保护。Step 206. Determine whether the ingress node or transit node is designated as a PLR. If yes, executestep 207. Otherwise, the RSVP signaling will notify the control plane of the current node that the node does not need to perform FRR protection on the primary tunnel.

判断的依据为，入口节点或传输节点的每一个ERO数据中，如果保留字段的值为0x0，将该节点设置为PLR节点；如果保留字段的值为0xEE，将该节点为非PLR节点；如果多个ERO数据与入口节点或传输节点是否允许作为PLR节点有冲突，则认为判断无效，即该节点允许作为PLR(缺省)，并且不向上游发送路径错误(Path Err)消息。The basis for judging is that in each ERO data of an entry node or a transmission node, if the value of the reserved field is 0x0, the node is set as a PLR node; if the value of the reserved field is 0xEE, the node is set as a non-PLR node; if If multiple ERO data conflicts with whether the entry node or transit node is allowed to be a PLR node, the judgment is considered invalid, that is, the node is allowed to be a PLR (default), and no Path Err message is sent upstream.

其中，出口(Egress)节点处通过RSVP信令处理ERO对象时，不需要判断属于本地的节点是否被设置为PLR。Wherein, when the ERO object is processed by the RSVP signaling at the egress node, it is not necessary to determine whether the local node is set as the PLR.

步骤207、当前节点设置为PLR节点后为主隧道查找或创建一条旁路隧道进行FRR保护，或者为被保护LSP查找或创建一条旁路LSP进行FRR保护。Step 207, after the current node is set as a PLR node, search for the main tunnel or create a bypass tunnel for FRR protection, or search for or create a bypass LSP for the protected LSP to perform FRR protection.

在所有隧道经过的节点上(除Egress节点外)，由当前节点的控制层面来决定是否将被保护隧道和保护隧道形成FRR保护关系，或者触发自动创建保护隧道或者保护LSP，判断的条件如下：On all the nodes that the tunnels pass through (except the egress node), the control plane of the current node decides whether to form a FRR protection relationship between the protected tunnel and the protection tunnel, or to trigger automatic creation of a protection tunnel or a protection LSP. The judgment conditions are as follows:

1)、通过信令对ERO对象的处理结果判断当前节点是否允许作为PLR节点，如果不允许，不形成FRR保护关系。1) Judging whether the current node is allowed to be a PLR node through the processing result of the ERO object through signaling, if not allowed, no FRR protection relationship is formed.

2)、保护隧道是否和被保护隧道重合，如果有重合，不允许形成FRR保护关系。2) Whether the protection tunnel overlaps with the protected tunnel, and if so, it is not allowed to form a FRR protection relationship.

3)、如果有多条保护隧道可选，根据路径和带宽情况选择最优路径。3) If there are multiple protection tunnels to choose from, select the optimal path according to the path and bandwidth conditions.

另外，本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通过程序来指示相关的硬件来完成，所述的程序可以存储于计算机可读取存储介质中，该程序在执行时，包括以下步骤：In addition, those of ordinary skill in the art can understand that all or part of the steps in the method of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. When executed, the following steps are included:

接收显示路由对象，所述显示路由对象包含设置本地保护节点的配置项；Receive a display routing object, the display routing object includes configuration items for setting the local protection node;

对所述显示路由对象中设置本地保护节点的配置项进行解析，设置当前节点是否为本地保护节点；Analyzing the configuration item for setting the local protection node in the display routing object, and setting whether the current node is a local protection node;

在当前节点设置为本地保护节点时，对经过所述当前节点的被保护链路进行快速重路由保护。When the current node is set as a local protection node, fast rerouting protection is performed on the protected links passing through the current node.

其中，所述的存储介质可以是ROM、RAM、磁碟或光盘等等。Wherein, the storage medium may be ROM, RAM, magnetic disk or optical disk and so on.

本发明实施例还提供了一种路由器，所述路由器包括：The embodiment of the present invention also provides a router, and the router includes:

消息配置单元301，用于对显示路由对象进行配置，设置链路上的每个节点是否为本地保护节点的配置项，以及通过显示路由对象的预留字段携带所述本地保护节点的配置项；The message configuration unit 301 is configured to configure the display routing object, set whether each node on the link is a configuration item of a local protection node, and carry the configuration item of the local protection node through a reserved field of the display routing object;

消息发送单元302，用于向与当前节点通过链路连接的其他节点发送消息配置单元所配置的消息，所述为Resv消息，该消息中包含显示路由对象，所述显示路由对象携带本地保护节点配置消息；The message sending unit 302 is configured to send the message configured by the message configuration unit to other nodes connected to the current node through a link, which is a Resv message, which contains a display routing object, and the display routing object carries a local protection node configuration message;

消息接收单元303，用于接收显示路由对象，所述显示路由对象包含设置本地保护节点的配置项；A message receiving unit 303, configured to receive a display routing object, where the display routing object includes configuration items for setting a local protection node;

消息处理单元304，用于对接收到的所述显示路由对象中设置本地保护节点的配置项进行解析，并根据解析结果设置当前节点是否为本地保护节点；The message processing unit 304 is configured to analyze the received configuration item of setting the local protection node in the display routing object, and set whether the current node is a local protection node according to the analysis result;

路由单元305包括：Routing unit 305 includes:

查找单元306，用于为被保护的隧道查找旁路隧道，以及为被保护的标签交换路径查找旁路标签交换路径；A search unit 306, configured to search for a bypass tunnel for the protected tunnel, and search for a bypass label switching path for the protected label switching path;

切换单元307，用于根据查找单元306的查找结果将经过当前节点的被保护隧道切换至查找得到的旁路隧道，以及根据查找结果将经过所述当前节点的被保护标签交换路径切换到旁路标签交换路径。The switching unit 307 is configured to switch the protected tunnel passing through the current node to the bypass tunnel obtained through the search according to the search result of the search unit 306, and switch the protected label switched path passing through the current node to the bypass tunnel according to the search result Label switching path.

可选地，路由单元305包括：Optionally, the routing unit 305 includes:

创建单元，用于为被保护的隧道创建旁路隧道，以及为被保护的标签交换路径创建旁路标签交换路径；A creation unit for creating a bypass tunnel for the protected tunnel and a bypass label switching path for the protected label switching path;

切换单元，用于将经过当前节点的被保护隧道切换至创建单元已建立的旁路隧道，以及将经过当前节点的被保护标签交换路径切换至创建单元已建立的旁路标签交换路径。The switching unit is configured to switch the protected tunnel passing through the current node to the bypass tunnel established by the creating unit, and switch the protected label switching path passing through the current node to the bypass label switching path established by the creating unit.

由上述可知，本发明实施例首先获取包含当前节点信息的显示路由对象，然后对该显示路由对象进行解析，并在当前节点被指定为本地保护节点时，对经过所述当前节点的被保护标签交换路径进行快速重路由，与现有技术相比较，本发明实施例通过对显示路由对象的信息进行解析就可以确定被保护的隧道或LSP沿途所经过的节点是否可以作为PLR节点，并在该节点为PLR节点时对经过所述当前节点的被保护标签交换路径进行快速重路由，这样在被保护的隧道或LSP失效时可以将流量进行快速重路由，进而可以最大程度的保护网络流量，并使数据传输不会发生中断。As can be seen from the above, the embodiment of the present invention first obtains the display routing object containing the information of the current node, and then analyzes the display routing object, and when the current node is designated as a local protection node, the protected label passing through the current node Switch paths to perform fast rerouting. Compared with the prior art, the embodiment of the present invention can determine whether the protected tunnel or the node that the LSP passes along the way can be used as a PLR node by analyzing the information displaying the routing object, and in this When the node is a PLR node, fast rerouting is performed on the protected label switching path passing through the current node, so that when the protected tunnel or LSP fails, the traffic can be fast rerouted, and then the network traffic can be protected to the greatest extent, and So that data transmission will not be interrupted.

另外，由于本发明实施例对显示路由所经过的节点以及所经过的节点是否作为本地保护节点进行配置，然后通过对RSVP信令协议携带的ERO对象进行扩展，并根据配置信息在显示路由对象指明显示路由所经过的节点是否作为本地保护节点，从而使得本发明实施例可以为具体的隧道或被保护的LSP指定需要进行FRR保护的节点。In addition, since the embodiment of the present invention configures the nodes passed by the displayed route and whether the passed nodes are used as local protection nodes, and then expands the ERO object carried by the RSVP signaling protocol, and indicates in the displayed route object according to the configuration information Displays whether the node passed by the route is a local protection node, so that the embodiment of the present invention can designate a node that needs to be protected by FRR for a specific tunnel or LSP to be protected.

以上对本发明实施例所提供的设置本地保护节点方法、实现快速重路由的方法与路由器进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。The method for setting local protection nodes, the method for realizing fast rerouting and the router provided by the embodiment of the present invention are described above in detail. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiments It is only used to help understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, The contents of this description should not be construed as limiting the present invention.

Claims (10)

1, a kind of this locality protection nodal method that is provided with is characterized in that described method is:

Receive route display object, described route display object comprises the configuration item that local protection node is set;

The configuration item that local protection node is set in the described route display object is resolved, and whether present node is set is local protection node.

2, this locality protection nodal method that is provided with as claimed in claim 1 is characterized in that, whether the described present node that is provided with is that local protection node comprises:

When the configuration item in its route display object that present node obtains was first preset value, present node was set to local protection node;

When the configuration item in its route display object that present node obtains was second preset value, present node was set to non-local protection node.

3, this locality protection nodal method that is provided with as claimed in claim 1 is characterized in that,

The configuration item of described local protection node is the reserved field of route display object.

4, this locality protection nodal method that is provided with as claimed in claim 2; it is characterized in that; a plurality of route display object that present node obtains be provided with it configuration item of local protection node when inconsistent present node be set to locally protect node and upstream nodes transmit path error message not.

5, a kind of method that realizes quick heavy-route is characterized in that, comprising:

Receive route display object, described route display object comprises the configuration item that local protection node is set;

The configuration item that local protection node is set in the described route display object is resolved, and whether present node is set is local protection node;

When present node is set to this locality protection node, the protected link through described present node is carried out quick heavy-route protection.

6, the method for the quick heavy-route of realization as claimed in claim 5 is characterized in that, the protected label switched path through described present node is carried out quick heavy-route comprise:

For protected link is searched bypass link, described bypass link and protected link are formed quick heavy-route relation.

7, a kind of router is characterized in that, comprising:

The message sink unit is used to receive route display object, and described route display object comprises the configuration item that local protection node is set;

Message processing unit, the configuration item that is used for the described route display object that receives is provided with local protection node is resolved, and whether according to analysis result present node is set be local protection node;

Routing unit is used for when present node is set to this locality protection node the protected link through described present node being carried out quick heavy-route protection.

8, router as claimed in claim 7 is characterized in that, described router further comprises:

The message arrangement unit is used for route display object is configured, and whether each node that is provided with on the link is the configuration item of local protection node, and the configuration item that carries described local protection node by the reserved field of route display object;

Message sending unit is used for comprising route display object to sending the message that the message arrangement unit is disposed with present node by link-attached other nodes in the described message.

9, as claim 7 or 8 described routers, it is characterized in that described routing unit comprises:

Search the unit, be used to protected tunnel to search bypass tunnel, and search the bypass label switched path for protected label switched path;

Switch unit is used for will switching to through the protected tunnel of present node according to lookup result and searches the bypass tunnel that obtains, and will switch to the bypass label switched path through the protected label switched path of described present node according to lookup result.

10, as claim 7 or 8 described routers, it is characterized in that described routing unit comprises:

Creating unit is used to protected tunnel to create bypass tunnel, and is that protected label switched path is created the bypass label switched path;

Switch unit is used for the protected tunnel through described present node is switched to the bypass tunnel that creating unit has been set up, and will switches to the bypass label switched path that creating unit has been set up through the protected label switched path of described present node.

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