Cisco IOS Cookbook 中文精简版第二十二章第一跳冗余协议

Enter configuration commands, one per line. End with CNTL/Z.

Router2(config)#interface FastEthernet 1/0

Router2(config-if)#standby 1 ip 172.22.1.1

Router2(config-if)#standby 1 priority 110

Router2(config-if)#standby 1 preempt

Router2(config-if)#exit

Router2(config)#end

Router2#

注释 正常情况下当LAN端口up后就会发生强占，而此时可能网络还没有收敛，所以建议配置强占延迟时间，让路由器启动后过一段时间再发起强占standby 1 preempt delay 60

22.3. 配置HSRP对接口问题追踪的支持

提问 当主用路由器的上联端口出现问题后主动切换到备用路由器

回答

Router1#configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Router1(config)#interface FastEthernet0/1

Router1(config-if)#standby 1 ip 172.22.1.1

Router1(config-if)#standby 1 priority 120

Router1(config-if)#standby 1 preempt

Router1(config-if)#standby 1 track Serial0/0 20

Router1(config-if)#exit

Router1(config)#end

Router1#

从12.2(15)T后引入更多可追踪实例

Router1#configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Router1(config)#track 11 interface Serial1/1 ip routing

Router1(config-track)#exit

Router1(config)#interface FastEthernet0/0

Router1(config-if)#standby 1 ip 172.22.1.1

Router1(config-if)#standby 1 priority 120

Router1(config-if)#standby 1 preempt

Router1(config-if)#standby 1 track 11 decrement 50

Router1(config-if)#end

Router1#

注释 Router1#show track

Track 11

Interface Serial1/1 ip routing

IP routing is Down (hw admin-down, ip disabled)

1 change, last change 00:12:48

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