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1、AR150 S the maximum interval for sending Hello packets was 9247 the local router sent 426 Hello packets and received 61 packets the type of the Hello packet was Lan Level 2 在RouterA上执行display isis route或display isis peer命令 不显示任何信息 RouterA与RouterB之间 的IS IS邻居关系已经拆除 5 配置文件配置文件 RouterA的配置文件 sysname Rout
2、erA bfd isis 1 is level level 2 network entity aa 1111 1111 1111 00 HEEX Startpagehttp localhost 7890 printtopics html time Thu Aug 27 2 第40页 共47页2015 8 27 17 30 interface GigabitEthernet1 0 0 ip address 100 1 1 1 255 255 255 0 isis enable 1 isis bfd static bfd atob bind peer ip 100 1 1 2 interface
3、GigabitEthernet1 0 0 discriminator local 1 discriminator remote 2 commit return RouterB的配置文件 sysname RouterB bfd isis 1 is level level 2 network entity aa 2222 2222 2222 00 interface GigabitEthernet1 0 0 ip address 100 1 1 2 255 255 255 0 isis enable 1 isis bfd static interface GigabitEthernet2 0 0
4、ip address 100 2 1 1 255 255 255 0 isis enable 1 bfd btoa bind peer ip 100 1 1 1 interface GigabitEthernet1 0 0 discriminator local 2 discriminator remote 1 commit return RouterC的配置文件 sysname RouterC isis 1 is level level 2 network entity aa 3333 3333 3333 00 interface GigabitEthernet1 0 0 ip addres
5、s 100 2 1 2 255 255 255 0 isis enable 1 return 父主题 配置举例 7 7 8 7 9 配置IS IS与动态BFD联动示例7 7 8 7 9 配置IS IS与动态BFD联动示例 组网需求组网需求 如图1所示 现网中有三台路由器通过IS IS协议实现路由互通 且RouterA与RouterB之间通过一台二层交换机实现互 HEEX Startpagehttp localhost 7890 printtopics html time Thu Aug 27 2 第41页 共47页2015 8 27 17 30 连 现要求当RouterA与RouterB之间经
6、交换机链路出现故障时 这两台路由器能快速对故障结果做出反应 并把流量 切换至经RouterC链路转发 图1 配置IS IS与动态BFD联动组网图 配置思路配置思路 采用如下思路配置IS IS与动态BFD联动特性 配置各路由器的接口IP地址以及IS IS路由协议 实现路由器之间路由可达 1 配置IS IS接口开销值控制路由的选路功能 使得RouterA到RouterB经交换机链路为主链路 经RouterC链 路为备份链路 2 在RouterA RouterB和RouterC上配置IS IS与动态BFD联动 实现快速感知链路故障 从而将流量切换至 备份链路转发 3 操作步骤操作步骤 配置各路由器的
7、接口IP地址 配置RouterA RouterA interface gigabitethernet 1 0 0 interface gigabitethernet 1 0 0 RouterA GigabitEthernet1 0 0 ip address 1 1 1 1 24 ip address 1 1 1 1 24 RouterA isis 1 quit quit RouterA interface gigabitethernet 2 0 0 interface gigabitethernet 2 0 0 RouterA GigabitEthernet2 0 0 ip address 3
8、 3 3 1 24 ip address 3 3 3 1 24 RouterA GigabitEthernet2 0 0 quit quit RouterB和RouterC与RouterA配置一致 略 1 配置IS IS基本功能 配置RouterA RouterA isis isis RouterA isis 1 is level level 2 is level level 2 RouterA isis 1 network entity 10 0000 0000 0001 00 network entity 10 0000 0000 0001 00 RouterA isis 1 quit q
9、uit RouterA interface gigabitethernet 1 0 0 interface gigabitethernet 1 0 0 RouterA GigabitEthernet1 0 0 isis enable 1 isis enable 1 RouterA GigabitEthernet1 0 0 quit quit RouterA interface gigabitethernet 2 0 0 interface gigabitethernet 2 0 0 RouterA GigabitEthernet2 0 0 isis enable 1 isis enable 1
10、 RouterA GigabitEthernet2 0 0 quit quit 配置RouterB RouterB isis isis RouterB isis 1 is level level 2is level level 2 RouterB isis 1 network entity 10 0000 0000 0002 00 network entity 10 0000 0000 0002 00 RouterB isis 1 quitquit RouterB interface gigabitethernet 1 0 0 interface gigabitethernet 1 0 0 R
11、outerB GigabitEthernet1 0 0 isis enable 1 isis enable 1 RouterB GigabitEthernet1 0 0 quit quit RouterB interface gigabitethernet 2 0 0 interface gigabitethernet 2 0 0 2 HEEX Startpagehttp localhost 7890 printtopics html time Thu Aug 27 2 第42页 共47页2015 8 27 17 30 RouterB GigabitEthernet1 0 0 isis ena
12、ble 1 isis enable 1 RouterB GigabitEthernet1 0 0 quit quit RouterB interface gigabitethernet 3 0 0 interface gigabitethernet 3 0 0 RouterB GigabitEthernet3 0 0 isis enable 1 isis enable 1 RouterB GigabitEthernet3 0 0 quit quit 配置RouterC RouterC isis isis RouterC isis 1 is level level 2 is level leve
13、l 2 RouterC isis 1 network entity 10 0000 0000 0003 00 network entity 10 0000 0000 0003 00 RouterC isis 1 quit quit RouterC interface gigabitEthernet 1 0 0 interface gigabitEthernet 1 0 0 RouterC GigabitEthernet1 0 0 isis enable 1 isis enable 1 RouterC GigabitEthernet1 0 0 quit quit RouterC interfac
14、e gigabitethernet 2 0 0 interface gigabitethernet 2 0 0 RouterC GigabitEthernet2 0 0 isis enable 1 isis enable 1 RouterC GigabitEthernet2 0 0 quit quit 配置完成后 使用display isis peer命令 可以查看RouterA和RouterB RouterA和RouterC建立了邻 居关系 以RouterA为例 RouterA display isis peerdisplay isis peer Peer information for I
15、SIS 1 System Id Interface Circuit Id State HoldTime Type PRI 0000 0000 0002 GE2 0 0 0000 0000 0002 01 Up 9s L2 64 0000 0000 0003 GE1 0 0 0000 0000 0001 02 Up 21s L2 64 Total Peer s 2 路由器之间已经互相学到路由 以查看RouterA的路由表为例 RouterA display ip routing table display ip routing table Route Flags R relay D downlo
16、ad to fib Routing Tables Public Destinations 8 Routes 9 Destination Mask Proto Pre Cost Flags NextHop Interface 1 1 1 0 24 Direct 0 0 D 1 1 1 1 GigabitEthernet1 0 0 1 1 1 1 32 Direct 0 0 D 127 0 0 1 InLoopBack0 1 1 1 1 32 Direct 0 0 D 127 0 0 1 GigabitEthernet1 0 0 2 2 2 0 24 ISIS L2 15 20 D 1 1 1 2 GigabitEthernet1 0 0 3 3 3 0 24 Direct 0 0 D 3 3 3 1 GigabitEthernet2 0 0 3 3 3 1 32 Direct 0 0 D 127 0 0 1 InLoopBack0 3 3 3 1 32 Direct 0 0 D 127 0 0 1 GigabitEthernet2 0 0 127 0 0 0 8 Direct 0 0 D
