Lab - 浮动静态路由 & IP SLA

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Topology

Objective

• 理解浮动路由的配置
• 理解IP SLA 的原理
• 配置 IP SLAs ICMP Path Echo Operation

Step 1： 配置基本路由器接口

R1(config)#interface loopback0

R1(config-if)#ip address 1.1.1.1 255.255.255.0

R1(config)#interface f0/0

R1(config-if)#ip address 12.1.1.1 255.255.255.0

R1(config-if)#no shutdown

R1(config)#interface s1/0

R1(config-if)#ip address 21.1.1.1 255.255.255.0

R1(config-if)#no shutdown

R2(config)#interface loopback0

R2(config-if)#ip address 2.2.2.2 255.255.255.0

R2(config)#interface f0/0

R2(config-if)#ip address 12.1.1.2 255.255.255.0

R2(config-if)#no shutdown

R2(config)#interface s1/0

R2(config-if)#ip address 21.1.1.2 255.255.255.0

R2(config-if)#no shutdown

R1#show ip int brief
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            12.1.1.1        YES manual up                    up     
Serial1/0                  21.1.1.1             YES manual up                    up     
Loopback0                  1.1.1.1            YES manual up                    up     

R2#show ip int br
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0        2.1.1.2           YES manual up                    up         
Serial1/0                  21.1.1.2          YES manual up                    up     
Loopback0               2.2.2.2            YES manual up                    up     

step 2: 在R2上配置静态路由与浮动静态路由

R2(config)#ip route 1.1.1.0 255.255.255.0 12.1.1.1

R2(config)#ip route 1.1.1.0 255.255.255.0 21.1.1.1 20

step 3: 在R1上配置IP SLAs ICMP Path Echo Operation

R1(config)#ip sla monitor 10     // specifies an ID number for the operation beign configured and enters IP SLA Monitor configuration mode

R1(config-rtr)#type pathEcho protocol ipIcmpEcho 12.1.1.2 source-ip 12.1.1.1

R1(config-rtr)#exit

R1(config)#track 10 rtr 10 reachability

R1(config)#ip sla monitor schedule 10 life forever start-time now

R1#show ip sla statistics
Round Trip Time (RTT) for       Index 10
        Latest RTT: 12 milliseconds
Latest operation start time: *14:10:52.791 UTC Fri Jul 10 2015
Latest operation return code: OK
Number of successes: 468
Number of failures: 415
Operation time to live: Forever

Step 4: 指定ip静态路由，并在主路由上调用track跟踪工程

R1(config)#ip route 2.2.2.0 255.255.255.0 12.1.1.2 track 10

R1(config)#ip route 2.2.2.0 255.255.255.0 21.1.1.2 20

R1#show ip route | b Ga
Gateway of last resort is not set
     1.0.0.0/24 is subnetted, 1 subnets
C       1.1.1.0 is directly connected, Loopback0
     2.0.0.0/24 is subnetted, 1 subnets
S       2.2.2.0 [1/0] via 12.1.1.2
     21.0.0.0/24 is subnetted, 1 subnets
C       21.1.1.0 is directly connected, Serial1/0
     12.0.0.0/24 is subnetted, 1 subnets
C       12.1.1.0 is directly connected, FastEthernet0/0

R2#show ip route  static
     1.0.0.0/24 is subnetted, 1 subnets
S       1.1.1.0 [1/0] via 12.1.1.1

step 5: 在R2上关闭以太网接口f0/0

R2(config)#interface f0/0

R2(config-if)#shutdown

R1#show ip route static
     2.0.0.0/24 is subnetted, 1 subnets
S       2.2.2.0 [20/0] via 21.1.1.2

R1#show ip route 2.2.2.0
Routing entry for 2.2.2.0/24
  Known via "static", distance 20, metric 0
  Routing Descriptor Blocks:
  * 21.1.1.2
      Route metric is 0, traffic share count is 1

R2#show ip route sta
     1.0.0.0/24 is subnetted, 1 subnets
S       1.1.1.0 [20/0] via 21.1.1.1

R2#show ip route 1.1.1.0
Routing entry for 1.1.1.0/24
  Known via "static", distance 20, metric 0
  Routing Descriptor Blocks:
  * 21.1.1.1
      Route metric is 0, traffic share count is 1

Step 6: 将R2上f0/0接口开了

R1#show ip route static
     2.0.0.0/24 is subnetted, 1 subnets
S       2.2.2.0 [1/0] via 12.1.1.2

R2#show ip route sta
     1.0.0.0/24 is subnetted, 1 subnets
S       1.1.1.0 [1/0] via 12.1.1.1

Lab - 浮动静态路由 & IP SLA

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原文地址：http://www.cnblogs.com/elewei/p/4635624.html