EIGRP专题实验3：EIGRP多AS号问题研究

1：配置地址（略），并配置EIGRP多个AS

R1(config)#routereigrp 100

R1(config-router)#noauto-summary

R1(config-router)#net192.168.12.0

R1(config-router)#net10.0.0.0

R2(config)#routereigrp 100

R2(config-router)#noauto-summary

R2(config-router)#net192.168.12.0

R2(config)#routereigrp 200

R2(config-router)#noauto-summary

R2(config-router)#net192.168.23.0

R3(config)#routereigrp 200

R3(config-router)#noauto-summary

R3(config-router)#net192.168.23.0

R3(config-router)#net192.168.0.0

R3(config-router)#net192.168.1.0

R2#show ip eigrp neighbors

IP-EIGRPneighbors for process 100

H Address Interface Hold Uptime SRTT RTO Q Seq

(sec) (ms) Cnt Num

0 192.168.12.1 Fa0/0 10 00:00:50 123 738 0 101

IP-EIGRPneighbors for process 200

H Address Interface Hold Uptime SRTT RTO Q Seq

(sec) (ms) Cnt Num

0 192.168.23.2 Se1/1 14 00:00:18 191 1146 0 5

以上显示说明：在一台路由器上可以启用多个EIGRP进程（最多允许启动30个）。

R1#show ip ro ei

R2#show ip ro ei

10.0.0.0/24 is subnetted, 2 subnets

D 10.1.1.0 [90/156160] via 192.168.12.1, 00:01:40,FastEthernet0/0

D 10.1.0.0 [90/156160] via 192.168.12.1,00:01:40, FastEthernet0/0

D 192.168.0.0/24 [90/2297856] via192.168.23.2, 00:01:01, Serial1/1

D 192.168.1.0/24 [90/2297856] via192.168.23.2, 00:00:58, Serial1/1

R3#show ip ro ei

以上显示说明：不同AS的EIGRP不能直接通信。

解决不同EIGRP AS间通信的方法：路由重分发

R2(config)#routereigrp 100

R2(config-router)#redistributeeigrp 200

R2(config-router)#routereigrp 200

R2(config-router)#redistributeeigrp 100

R1#show ip ro ei

D EX 192.168.23.0/24[170/2172416] via 192.168.12.2, 00:01:11, FastEthernet0/0

D EX 192.168.0.0/24 [170/2300416]via 192.168.12.2, 00:01:11, FastEthernet0/0

D EX 192.168.1.0/24 [170/2300416]via 192.168.12.2, 00:01:11, FastEthernet0/0

R3#show ip ro ei

192.168.12.0/30 is subnetted, 1 subnets

D EX 192.168.12.0 [170/2172416] via192.168.23.1, 00:01:10, Serial1/0

10.0.0.0/24 is subnetted, 2 subnets

D EX 10.1.1.0 [170/2300416] via 192.168.23.1,00:01:10, Serial1/0

D EX 10.1.0.0 [170/2300416] via 192.168.23.1,00:01:10, Serial1/0

2：把接口宣告到多个AS进程中

R2(config)#routereigrp 300

R2(config-router)#noauto-summary

R2(config-router)#net192.168.23.0

R3(config)#routereigrp 300

R3(config-router)#noauto-summary

R3(config-router)#net192.168.23.0

R3(config-router)#net192.168.1.0

R3#show ip protocols

RoutingProtocol is "eigrp 200"

Outgoing update filter list for allinterfaces is not set

Incoming update filter list for allinterfaces is not set

Default networks flagged in outgoing updates

Default networks accepted from incomingupdates

EIGRP metric weight K1=1, K2=0, K3=1, K4=0,K5=0

EIGRP maximum hopcount 100

EIGRP maximum metric variance 1

Redistributing: eigrp 200

EIGRP NSF-aware route hold timer is 240s

Automatic network summarization is not ineffect

Maximum path: 4

Routing for Networks:

192.168.0.0

192.168.1.0

192.168.23.0

Routing Information Sources:

Gateway Distance Last Update

192.168.23.1 90 00:08:53

Distance: internal 90 external 170

RoutingProtocol is "eigrp 300"

Outgoing update filter list for allinterfaces is not set

Incoming update filter list for allinterfaces is not set

Default networks flagged in outgoing updates

Default networks accepted from incomingupdates

EIGRP metric weight K1=1, K2=0, K3=1, K4=0,K5=0

EIGRP maximum hopcount 100

EIGRP maximum metric variance 1

Redistributing: eigrp 300

EIGRP NSF-aware route hold timer is 240s

Automatic network summarization is not ineffect

Maximum path: 4

Routing for Networks:

192.168.1.0

192.168.23.0

Routing Information Sources:

Gateway Distance Last Update

Distance: internal 90 external 170

R3#show ip eigrp neighbors

IP-EIGRPneighbors for process 200

H Address Interface Hold Uptime SRTT RTO Q Seq

(sec) (ms) Cnt Num

0 192.168.23.1 Se1/0 13 00:13:34 172 1032 0 6

IP-EIGRPneighbors for process 300

H Address Interface Hold Uptime SRTT RTO Q Seq

(sec) (ms) Cnt Num

0 192.168.23.1 Se1/0 13 00:05:08 143 858 0 3

R2#show ip ro ei

10.0.0.0/24 is subnetted, 2 subnets

D 10.1.1.0 [90/156160] via 192.168.12.1,00:14:20, FastEthernet0/0

D 10.1.0.0 [90/156160] via 192.168.12.1,00:14:20, FastEthernet0/0

D 192.168.0.0/24 [90/2297856] via192.168.23.2, 00:13:41, Serial1/1

D 192.168.1.0/24 [90/2297856] via192.168.23.2, 00:13:38, Serial1/1

R2#show ip route 192.168.1.0255.255.255.0

Routingentry for 192.168.1.0/24

Known via "eigrp 200", distance 90,metric 2297856, type internal

Redistributing via eigrp 100, eigrp 200

Advertised by eigrp 100

Last update from 192.168.23.2 on Serial1/1,00:14:17 ago

Routing Descriptor Blocks:

* 192.168.23.2, from 192.168.23.2, 00:14:17ago, via Serial1/1

Route metric is 2297856, traffic sharecount is 1

Total delay is 25000 microseconds,minimum bandwidth is 1544 Kbit

Reliability 255/255, minimum MTU 1500bytes

Loading 1/255, Hops 1

R2#show ip ro ei

10.0.0.0/24 is subnetted, 2 subnets

D 10.1.1.0 [90/156160] via 192.168.12.1,00:15:07, FastEthernet0/0

D 10.1.0.0 [90/156160] via 192.168.12.1,00:15:07, FastEthernet0/0

D 192.168.0.0/24 [90/2297856] via192.168.23.2, 00:14:28, Serial1/1

D 192.168.1.0/24 [90/2297856] via 192.168.23.2,00:00:07, Serial1/1

R2#show ip ro192.168.1.0

Routingentry for 192.168.1.0/24

Known via "eigrp 300", distance 90,metric 2297856, type internal

Redistributing via eigrp 300

Last update from 192.168.23.2 on Serial1/1,00:01:43 ago

Routing Descriptor Blocks:

* 192.168.23.2, from 192.168.23.2, 00:01:43ago, via Serial1/1

Route metric is 2297856, traffic sharecount is 1

Total delay is 25000 microseconds, minimumbandwidth is 1544 Kbit

Reliability 255/255, minimum MTU 1500bytes

Loading 1/255, Hops 1

以上显示说明：EIGRP可以同时在多个AS中建立邻居关系，路由条目使用第一次AS系统更新的条目。

时间： 2024-10-14 09:49:30

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