实验07 IGRP非等值带宽的负载平衡.doc

实验七 通过IGRP路由协议实现非等值带宽的负载平衡实验要求: 通过在两台路由器上配置IGRP路由协议实现路由器之间非等值带宽的负载平衡。 路由器R1配置如下：Router en 进入特权模式Router # conf t 进入全局配置模式Router # host R1 更改路由器名R1 (config)# int lo1 进入了loopback1口R1 (config-if)# ip add 1.1.1.1 255.255.255.0 R1 (config-if)# Z 直接退之特权模式R1 #config tR1 (config)# int s0 配置S0口R1 (config-if)# ip add 2.2.2.1 255.255.255.0 配置IPR1 (config-if)# clock rate 56000 配置DCE端时钟R1 (config-if)# no shut 启用端口R1 (config-if)# exitR1 (config)# router igrp 100 启用IGRP路由协议R1 (config-router)# net 1.0.0.0.0 加入直连的网络号R1 (config-router)# net 4.0.0.0R1 (config-router)# net 2.0.0.0R1 (config-router)#variance 6 设置variance值，可以在路径间启用负载平衡，把值设成6的依据是用低速带宽的METRIC值除高速带宽的METRIC值，如何看到低速带宽的METRIC值呢（因路由表缺省只显示最优路由）？把高速带宽的端口禁用，就可看到低速带宽的METRIC值了R1 (config)# debug ip icmp路由器R2配置如下：Router enRouter# config tRouter (config)# host R2R2 (config-if)# int s0R2 (config-if)# ip add 2.2.2.2 255.255.255.0R2 (config-if)# no shutR2 (config-if)# exitR2 (config)# int lo1R2 (config-if)# ip add 4.4.4.2 255.255.255.0R2 (config-if)# exitR2 (config)# router igrp 100R2 (config-router)# net 3.0.0.0R2 (config-router)# net 4.0.0.0R2 (config-router)# net 2.0.0.0R2 (config-router)# variance 6Router (config)# debug ip icmp三实验结果：r1#pingProtocol ip:Target IP address: 3.3.3.1Repeat count 5: 14Datagram size 100:Timeout in seconds 2:Extended commands n:Sweep range of sizes n:Type escape sequence to abort.Sending 14, 100-byte ICMP Echos to 3.3.3.1, timeout is 2 seconds:!Success rate is 100 percent (14/14), round-trip min/avg/max = 8/14/40 msr1#00:21:18: ICMP: echo reply rcvd, src 3.3.3.1, dst 4.4.4.1#00:21:18: ICMP: echo reply rcvd, src 3.3.3.1, dst 2.2.2.100:21:18: ICMP: echo reply rcvd, src 3.3.3.1, dst 4.4.4.1#00:21:18: ICMP: echo reply rcvd, src 3.3.3.1, dst 2.2.2.1R2#pingProtocol ip:Target IP address: 1.1.1.1Repeat count 5: 14Datagram size 100:Timeout in seconds 2:Extended commands n:Sweep range of sizes n:Type escape sequence to abort.Sending 14, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:!Success rate is 100 percent (14/14), round-trip min/avg/max = 8/15/44 msR2#00:30:26: ICMP: echo reply rcvd, src 1.1.1.1, dst 4.4.4.2#00:30:26: ICMP: echo reply rcvd, src 1.1.1.1, dst 2.2.2.200