《在路由器上配置Track,实现静态路由器的冗余.docx》由会员分享,可在线阅读,更多相关《在路由器上配置Track,实现静态路由器的冗余.docx(4页珍藏版)》请在三一办公上搜索。
1、在路由器上配置Track,实现静态路由器的冗余在路由器上配置Track,实现静态路由器的冗余 一、本文目的 静态路由+Track,实现路由的冗余切换 二、技术简介 静态路由:管理员手工填写,管理距离为1或0(静态路由下一跳为接口的情况下) Track:追踪技术 IP SLA:IP 服务等级,通过该技术测试网络连通性 三、实验环境 模拟器:GNS3 路由器:unzip-c3725-adventerprisek9-mz.124-15.T5.bin 四、网络拓扑 五、环境要求 .在路由器访问对端lo1接口默认走上面的链路,当上面的链路出问题时,切换到下面的链路 .在路由器访问对端lo2接口默认走下面
2、的链路,当下面的链路出问题时,切换到上面的链路 六、网络配置 R1: track 1 rtr 1 reachability /跟踪路由可靠性 track 2 rtr 2 reachability interface Loopback1 ip address 10.80.1.1 255.255.255.0 interface Loopback2 ip address 10.80.2.1 255.255.255. interface FastEthernet0/0 ip address 172.20.0.17 255.255.255.252 interface FastEthernet0/1 ip
3、 address 172.20.0.29 255.255.255.252 ip route 10.70.1.0 255.255.255.0 172.20.0.18 track 1 /在此路由后面跟track,如果trackdown了,此路由失效,因为路由器会选择备份的路由 ip route 10.70.2.0 255.255.255.0 172.20.0.30 track 2 ip route 10.70.1.0 255.255.255.0 172.20.0.30 10 /配置管理距离为10,使该路由作为备份路由,当track的主路由失败后,则选择这个路由 ip route 10.70.2.0
4、 255.255.255.0 172.20.0.18 10 ip sla 1 /配置SLA,根据icmp来判断链路是否可靠 icmp-echo 172.20.0.18 source-ip 172.20.0.17 ip sla schedule 1 life forever start-time now /配置schedule,是SLA立即生效,有效期为永远 ip sla 2 icmp-echo 172.20.0.30 source-interface FastEthernet0/1 ip sla schedule 2 life forever start-time now R2: track
5、1 rtr 1 reachability track 2 rtr 2 reachability interface Loopback1 ip address 10.70.1.1 255.255.255.0 interface Loopback2 ip address 10.70.2.1 255.255.255.0 interface FastEthernet0/0 ip address 172.20.0.18 255.255.255.252 interface FastEthernet0/1 ip address 172.20.0.30 255.255.255.252 ip route 10.
6、80.1.0 255.255.255.0 172.20.0.17 track 1 ip route 10.80.2.0 255.255.255.0 172.20.0.29 track 2 ip route 10.80.1.0 255.255.255.0 172.20.0.29 10 ip route 10.80.2.0 255.255.255.0 172.20.0.17 10 ip sla 1 icmp-echo 172.20.0.17 source-ip 172.20.0.18 ip sla schedule 1 life forever start-time now ip sla 2 ic
7、mp-echo 172.20.0.29 source-interface FastEthernet0/1 ip sla schedule 2 life forever start-time now 七、验证 R2#sho track brief Track Object Parameter Value Last Change 1 rtr 1 reachability Up 00:00:37 2 rtr 2 reachability Up 01:10:57 R2#sho track Track 1 Response Time Reporter 1 reachability Reachabilit
8、y is Up 8 changes, last change 00:01:58 Latest operation return code: OK Latest RTT (millisecs) 32 Tracked by: STATIC-IP-ROUTING 0 Track 2 Response Time Reporter 2 reachability Reachability is Up 8 changes, last change 01:12:18 Latest operation return code: OK Latest RTT (millisecs) 20 Tracked by: STATIC-IP-ROUTING 0 可以在R1在配置deny ACL测试(具体操作不在表述),测试结果如下: