IGRP协议的高级配置(1)

　　1.实验目的

　　通过本实验，读者可以掌握以下技能

　　使用有关IGRP的Debug命令;

　　配置最大路径数。

　　配置不等度量值的负载均衡;

　　配置负载均衡方式，

　　监测IGRP相关信息。

　　2.设备需求和拓扑结构

　　本实验是在实验3的基础上进行的，其设备需求和网络拓扑结构与实验3完全相同。网络拓扑结构如图5-5所示。

　　3. 实验配置及监测结果

　　在实验3配置成功的基础上开始本实验的操作，监测清单5-3记录了EGRP协议高级配置项目及监测信息。

　　监测清单5-3 IGRP协议的高级配置

　　第1段:监测IGRP路由更新

　　R3#conft

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

　　R3(config)#logg con

　　R3(config)#^Z

　　R3#

　　00:56:43: %SYS-5-CONFIG_1: Configured from console by console

　　R3#debug ip igrp ?

　　events　　IGRP protocol events

　　transactions IGRP protocol transactions

　　R3#debug ip igrp events

　　IGRP event debugging is on

　　R3#

　　00:57:01: IGRP: received updatefrom 172.16.23.2 on Serial1

　　00:57:01: IGRP: Update contains 5 interior,0 system, and 0 exterior routes.

　　00:57:01: IGRP: Total routes in. update:5

　　R3#

　　00:57:28: IGRP: received update from 172.16.13.1 on SerialO

　　00:57:28: IGRP: Update contains 3 interior, 0 system, and 0 exterior routes.

　　00:57:28: IGRP: Total routes in update: 3

　　R3#

　　00:58:01: IORP: sending update to 255.255.255.255 via Ethernet0(172.16.3.3)

　　00:58:01: IGRP: Update contains 5 interior,0 system,and 0 exterior routes.

　　00:58:01: IGRP: Total routes inupdate:5

　　00:58:01: IGRP: sending update to 255.255.255.255 via Serial0 (172.16.13.3)

　　00:58:02: IGRP: Update contains 2 interior, 0 system, and 0 exterior routes.

　　00:58:02: IGRP: Total routes in update: 2

　　00:58:02: IGRP: sending update to 255.255.255.255 via Seriall (172.16.23.3)

　　00:58:02: IGRP: Update contains 5 interior, 0 system, and 0 exterior routes.

　　00:58:02: IGRP: Total routes in update: 5

　　R3#undebug all

　　All possible debugging has been turned off

　　R3#debug ip lgrp transactions

　　IGRP protocol debugging is on

　　00:58:44: IGRP: received update from 172.16,13.1 on

　　00:58:44:　　subnet 172.16.12.0,　　24000 (neighbor 22000)

　　00:58:44:　　subnet 172.16.1.0, metric 22100 (neighbor 1100)

　　00:58:44:　　subnet 172,16.2.0. metric 24100 (neighbor 22100)

　　R3#

　　00:59:31: IGRP: sending update to 255.255.255.255 viaBtliemetO(172.16.3.3)

　　00:59:31:　　　subnet 172.16,23.0, metric=158250

　　00:59:31:　　　subnet 172.16.12.0, metric=24000

　　00:59:31:　　　subnet 172.16.13.0 metric=22000

　　00:59:31:　　　subnet 172.16.1A metric=22100

　　00:59:31:　　　subnet 172.16.2.0, metric=24100

　　00:59:32: IGRP: sending update to 255.255.255.255 via　　(172.16.13.3)

　　00:59:32:　　　subnet 172.16.23.0, metric==158250

　　00:59:32:　　　subnet 172.16.3.0, metrical 100

　　00:59:32: IGRP: sending update to 255.255.255.255 via Serial1 (172,16.23.3)

　　00:59:32:　　　subnet 172.16.12.0. metric=24000

　　00:59:32:　　　subnet 172.16.13.0,

　　R3#

　　00:59:32:　　　subnet 172.16.1.0, metric=22100

　　00:59:32:　　　subnet 172.16.2.0, metric=24100

　　00:59:32:　　　subnet 172.16.3.0, metric=1100

　　R3#

　　00:59:34: IGRP: received update from 172.16.23.2 on Serial1

　　00:59:34:　　　subnet 172.16.12.0, metric 160250 (neighbor 22000)

　　00:59:34:　　　subnet 172.16.13.0, metric 162250 (neighbor 24000)

　　00:59:34:　　　subnet 172,16.1.0, metric 160350 (neighbor 22100)

　　00:59:34:　　　subnet 172.16.2.0, metric 158350 (neighbor 1100)

　　00:59:34:　　　subnet 172.16.3.0, metric 162350 (neighbor 24100)

　　R3#undebug all

　　All possible debugging has been turned off

　　R3#

　　第2段:设置最大路径数

　　R1#sh ip route igrp

　　172.16.0.0/24 is subnetted, 6 subnets

　　I　　　172.16.23.0 [100/160250] via S72.16.12.2, 00:00:05, Serial0

　　[100/160250] via 172.16.13.3,00:00:04,

　　I　　　172.16.2.0 [100/22100] via 172.16.12.2, 00:00:05, Serial0

　　I　　　172.16.3.0 [100/22100] via 172.16.13.3, 00:00:04, Serial1

　　R1#conft

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

　　R1(config)#router igrp 100

　　R1(config-router)#maximum-paths 1

　　R1(config-router)#^Z

　　R1#sh ip route igrp

　　172.16.0.0/24 is subnetted, 6 subnets

　　I　　　172.16.23.0 [100/160250] via 172.16.12.2, 00:00:06, Serial0

　　I　　　172.16.2.0 [100/22100] via 172.16.12.2, 00:00:06, Serial0

　　I　　　172.16.3.0 [100/22100] via 172.16.13.3, 00:00:05, Serial1

　　第3段:设置非等值Metric负载均衡

　　Term_Server>2

　　[Resuming connection 2 to R2 ... ]

　　R2#conft

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

　　R2(config)#router igrp 100

　　R2(config-router)#variance 128

　　R2(config-router)#^Z

　　R2#de ip route *

　　R2#sh ip route igrp

　　I　　　172.16.13.0[100/24000]via 172.16.12.1,00:00:02,Serial0

　　[100/160250] via 172,16.23.3. 00:00:01, Serial1

　　I　　　172.16.1.0 [100/22100] via 172.16.12.1, 00:00:02, Serial0

　　I　　　172.16.3.0 [100/24100] via 172.16.12.1, 00:00:02, Serial0

　　[100/158350] via 172.16.23.3, 00:00:01, Serial1

　　R2#

　　R2#tracel72.16.3.3