EIGRP特性-Variance参数与不等价负载均衡配置实例参考模板

1、1 / 5配置过程如下：-PC1的配置-PC1(config)#no ip routingPC1(config)#ip default-gateway 10.1.1.1PC1(config)#interface e0/0PC1(config-if)#ip address 10.1.1.100 255.255.255.0PC1(config-if)#no shutdownPC1(config-if)#endPC1#-PC2的配置-PC2#configure terminalPC2(config)#no ip routingPC2(config)#ip default-gateway 192.16

2、8.1.2PC2(config)#interface e0/0PC2(config-if)#ip address 192.168.1.100 255.255.255.0PC2(config-if)#no shutdownPC2(config-if)#end-R1的配置-R1#configure terminalR1(config)#interface f0/0R1(config-if)#ip address 10.1.1.1 255.255.255.0R1(config-if)#no shutdown R1(config-if)#interface s1/0R1(config-if)#ip a

3、ddress 12.12.12.1 255.255.255.0R1(config-if)#no shutdown R1(config-if)#interface s1/1R1(config-if)#ip address 21.21.21.1 255.255.255.0R1(config-if)#no shutdown R1(config-if)#exitR1(config)#router eigrp 100R1(config-router)#network 10.1.1.0   0.0.0.255R1(config-router)#network 12.12.12.0 0.

4、0.0.255R1(config-router)#network 21.21.21.0 0.0.0.255R1(config-router)#no auto-summaryR1(config-router)#endR1#-R2的配置-R2#configure terminalR2(config)#interface s1/0R2(config-if)#bandwidth 64R2(config-if)#ip address 12.12.12.2 255.255.255.0R2(config-if)#no shutdown R2(config-if)#interface s1/1R2(confi

5、g-if)#bandwidth 128R2(config-if)#ip address 21.21.21.2 255.255.255.0R2(config-if)#no shutdown R2(config-if)#interface f0/0R2(config-if)#ip address 192.168.1.2 255.255.255.0R2(config-if)#no shutdown R2(config-if)#exitR2(config)#router eigrp 100R2(config-router)#network 192.168.1.0 0.0.0.255R2(config-

6、router)#network 12.12.12.0  0.0.0.255R2(config-router)#network 21.21.21.0  0.0.0.255R2(config-router)#!variance 2R2(config-router)#no auto-summaryR2(config-router)#endR2#快捷配置方式，直接在SecurCRT标签中粘贴即可，SecurCRT的使用参考-PC1的配置-configure terminalno ip routingip default-gateway 10.1.1.1inter

7、face e0/0ip address 10.1.1.100 255.255.255.0no shutdownend-PC2的配置-configure terminalno ip routingip default-gateway 192.168.1.2interface e0/0ip address 192.168.1.100 255.255.255.0no shutdownend-R1的配置-configure terminalinterface f0/0ip address 10.1.1.1 255.255.255.0no shutdown interface s1/0ip addres

8、s 12.12.12.1 255.255.255.0no shutdown interface s1/1ip address 21.21.21.1 255.255.255.0no shutdown exitrouter eigrp 100network 10.1.1.0   0.0.0.255network 12.12.12.0 0.0.0.255network 21.21.21.0 0.0.0.255no auto-summaryend-R2的配置-configure terminalinterface s1/0bandwidth 64ip address 12.12.1

9、2.2 255.255.255.0no shutdown interface s1/1bandwidth 128ip address 21.21.21.2 255.255.255.0no shutdown interface f0/0ip address 192.168.1.2 255.255.255.0no shutdown exitrouter eigrp 100network 192.168.1.0 0.0.0.255network 12.12.12.0  0.0.0.255network 21.21.21.0  0.0.0.255no auto-

10、summaryend验证:在没有修改variance的值之前,在R2上显示路由表R2#show ip route          Gateway of last resort is not set     21.0.0.0/24 is subnetted, 1 subnetsC       21.21.21.0 is directly connected, Serial1/1     10.0.0.0/24 is

11、subnetted, 1 subnetsD       10.1.1.0 90/20514560 via 21.21.21.1, 00:04:53, Serial1/1     12.0.0.0/24 is subnetted, 1 subnetsC       12.12.12.0 is directly connected, Serial1/0C    192.168.1.0/24 is directly connected, FastEthernet

12、0/0可以看到只有一条到达10.1.1.0 的路径。配置variance 2命令：R2#configure terminalR2(config)#router eigrp 100R2(config-router)#variance 2R2#endR2#show ip route  Gateway of last resort is not set     21.0.0.0/24 is subnetted, 1 subnetsC       21.21.21.0 is directly conne

13、cted, Serial1/1     10.0.0.0/24 is subnetted, 1 subnetsD       10.1.1.0 90/20514560 via 21.21.21.1, 00:00:52, Serial1/1                 90/40514560 via 12.12.12.1, 00:00:52, Serial1/0     12.0.0.0/24 is subnetted, 1 subnetsC       12.12.12.0 is directly connected, Serial1/0C    192.168.1.0/24 is directly connected, FastEthernet0/0现在可以看到，到达10.1.1.0 有两条路径。说明：variance 的值默认是1,代表等价链路的均衡负载，它的取值范围1128，这个乘数代表了可以接受的不等价链路的度量值的倍数，在这个范围内的链路都将被接受，并