R2#show ip eigrp topology EIGRP-IPv4 Topology Table for AS(100)/ID(2.2.2.2) Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply, r - reply Status, s - sia Status
P 192.168.23.0/24, 1 successors, FD is 281600 via Connected, Ethernet0/1 P 192.168.34.0/24, 1 successors, FD is 307200 via 192.168.23.3 (307200/281600), Ethernet0/1 P 192.168.12.0/24, 1 successors, FD is 281600 via Connected, Ethernet0/0 P 2.2.2.0/24, 1 successors, FD is 128256 via Connected, Loopback0 P 3.3.3.0/24, 1 successors, FD is 409600 via 192.168.23.3 (409600/128256), Ethernet0/1 P 1.1.1.0/24, 1 successors, FD is 409600 via 192.168.12.1 (409600/128256), Ethernet0/0 P 4.4.4.0/24, 1 successors, FD is 435200 via 192.168.23.3 (435200/409600), Ethernet0/1
R2#show ip route eigrp 1.0.0.0/24 is subnetted, 1 subnets D 1.1.1.0 [90/409600] via 192.168.12.1, 00:02:16, Ethernet0/0 3.0.0.0/24 is subnetted, 1 subnets D 3.3.3.0 [90/409600] via 192.168.23.3, 00:02:16, Ethernet0/1 4.0.0.0/24 is subnetted, 1 subnets D 4.4.4.0 [90/435200] via 192.168.23.3, 00:02:14, Ethernet0/1 D 192.168.34.0/24 [90/307200] via 192.168.23.3, 00:02:16, Ethernet0/1
R2#show ip protocols Routing Protocol is "eigrp 100" Outgoing update filter list for all interfaces is not set Incoming update filter list for all interfaces is not set Default networks flagged in outgoing updates Default networks accepted from incoming updates EIGRP-IPv4 Protocol for AS(100) Metric weight K1=1, K2=0, K3=1, K4=0, K5=0 Soft SIA disabled NSF-aware route hold timer is 240 Router-ID: 2.2.2.2 Topology : 0 (base) Active Timer: 3 min Distance: internal 90 external 170 Maximum path: 4 Maximum hopcount 100 Maximum metric variance 1
Automatic Summarization: disabled Maximum path: 4 Routing for Networks: 2.0.0.0 192.168.12.0 192.168.23.0 Routing Information Sources: Gateway Distance Last Update 192.168.12.1 90 00:05:09 192.168.23.3 90 00:05:09 Distance: internal 90 external 170
R1 int lo1 ip add 172.16.1.1 255.255.255.0 int lo2 ip add 172.16.2.1 255.255.255.0 int lo3 ip add 172.16.3.1 255.255.255.0 router eigrp 100 network 172.16.0.0
我们在R2的路由更新出口上进行汇总
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interface Ethernet0/1 ip summary-address eigrp 100 172.16.0.0 255.255.0.0
在R4上进行查看
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R4#show ip route 172.16.0.0/16 is subnetted, 1 subnets D 172.16.0.0 [90/460800] via 192.168.34.3, 00:00:34, Ethernet0/0
默认路由
可以在接口上汇总出一个默认路由
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interface Ethernet0/0 ip summary-address eigrp 100 0.0.0.0 0.0.0.0
路由认证
EIGRP只支持MD5认证
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interface Ethernet0/0 ip authentication mode eigrp 100 md5 ip authentication key-chain eigrp 100 cisco
负载均衡
实验拓扑
现在R1去往R3就有两条路线可以去
配置EIGRP
1
略
查看R1的路由表
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R1#sh ip route eigrp 3.0.0.0/24 is subnetted, 1 subnets D 3.3.3.0 [90/435200] via 192.168.14.4, 00:00:08, Ethernet0/1 [90/435200] via 192.168.12.2, 00:00:08, Ethernet0/0
R1#sh ip route eigrp 3.0.0.0/24 is subnetted, 1 subnets D 3.3.3.0 [90/432640] via 192.168.12.2, 00:00:22, Ethernet0/0
查看R1的拓扑表,发现另外另外一条线路变成了备用线路
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R1#show ip eigrp topology P 3.3.3.0/24, 1 successors, FD is 432640 via 192.168.12.2 (432640/176640), Ethernet0/0 via 192.168.14.4 (435200/409600), Ethernet0/1
R1#sh ip route eigrp 3.0.0.0/24 is subnetted, 1 subnets D 3.3.3.0 [90/435200] via 192.168.14.4, 00:00:23, Ethernet0/1 [90/432640] via 192.168.12.2, 00:00:23, Ethernet0/0
查看负载均衡的比例
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R1#show ip route 3.3.3.0 Routing entry for 3.3.3.0/24 Known via "eigrp 100", distance 90, metric 432640, type internal Redistributing via eigrp 100 Last update from 192.168.14.4 on Ethernet0/1, 00:00:53 ago Routing Descriptor Blocks: 192.168.14.4, from 192.168.14.4, 00:00:53 ago, via Ethernet0/1 Route metric is 435200, traffic share count is 239 Total delay is 7000 microseconds, minimum bandwidth is 10000 Kbit Reliability 255/255, minimum MTU 1500 bytes Loading 1/255, Hops 2 * 192.168.12.2, from 192.168.12.2, 00:00:53 ago, via Ethernet0/0 Route metric is 432640, traffic share count is 240 Total delay is 6900 microseconds, minimum bandwidth is 10000 Kbit Reliability 255/255, minimum MTU 1500 bytes Loading 1/255, Hops 2