EIGRP特性-Variance參數(shù)與不等價(jià)負(fù)載均衡配置實(shí)例

1、配置過程如下：-PC1的配置-PC1(config)#no ip routingPC1(config)#ip default-gateway PC1(config)#interface e0/0PC1(config-if)#ip address 00 PC1(config-if)#no shutdownPC1(config-if)#endPC1#-PC2的配置-PC2#configure terminalPC2(config)#no ip routingPC2(config)#ip default-gateway

2、PC2(config)#interface e0/0PC2(config-if)#ip address 00 PC2(config-if)#no shutdownPC2(config-if)#end-R1的配置-R1#configure terminalR1(config)#interface f0/0R1(config-if)#ip address R1(config-if)#no shutdown R1(config-if)#interface s1/0R1(config-if)#ip addres

3、s R1(config-if)#no shutdown R1(config-if)#interface s1/1R1(config-if)#ip address R1(config-if)#no shutdown R1(config-if)#exitR1(config)#router eigrp 100R1(config-router)#network 55R1(config-router)#network 55R1(config-

4、router)#network 55R1(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 R2(config-if)#no shutdown R2(config-if)#interface s1/1R2(config-if)#bandwidth 1

5、28R2(config-if)#ip address R2(config-if)#no shutdown R2(config-if)#interface f0/0R2(config-if)#ip address R2(config-if)#no shutdown R2(config-if)#exitR2(config)#router eigrp 100R2(config-router)#network 55R2(config-router)#network 1

6、55R2(config-router)#network 55R2(config-router)#!variance 2R2(config-router)#no auto-summaryR2(config-router)#endR2#快捷配置方式，直接在SecurCRT標(biāo)簽中粘貼即可，SecurCRT的使用參考/bbs/viewthread.php?tid=186-PC1的配置-configure terminalno ip routingip default-gateway

7、interface e0/0ip address 00 no shutdownend-PC2的配置-configure terminalno ip routingip default-gateway interface e0/0ip address 00 no shutdownend-R1的配置-configure terminalinterface f0/0ip address no shutdown interface s1/0ip a

8、ddress no shutdown interface s1/1ip address no shutdown exitrouter eigrp 100network 55network 55network 55no auto-summaryend-R2的配置-configure terminalinterface s1/0bandwidth 64ip address 255

9、.255.255.0no shutdown interface s1/1bandwidth 128ip address no shutdown interface f0/0ip address no shutdown exitrouter eigrp 100network 55network 55network 55no auto-summaryend驗(yàn)證:在沒有修改variance的值之前,

10、在R2上顯示路由表R2#show ip route Gateway of last resort is not set /24 is subnetted, 1 subnetsC is directly connected, Serial1/1 /24 is subnetted, 1 subnetsD 90/20514560 via , 00:04:53, Serial1/1 /24 is subnetted, 1 subnetsC is directly conne

11、cted, Serial1/0C /24 is directly connected, FastEthernet0/0可以看到只有一條到達(dá) 的路徑。配置variance 2命令：R2#configure terminalR2(config)#router eigrp 100R2(config-router)#variance 2R2#endR2#show ip routeGateway of last resort is not set /24 is subnetted, 1 subnetsC is directly

12、connected, Serial1/1 /24 is subnetted, 1 subnetsD 90/20514560 via , 00:00:52, Serial1/1 90/40514560 via , 00:00:52, Serial1/0 /24 is subnetted, 1 subnetsC is directly connected, Serial1/0C /24 is directly connected, FastEthernet0/0現(xiàn)在可以看到，到達(dá) 有兩條路徑。說明：variance 的值默認(rèn)是1,代表等價(jià)鏈路的均衡負(fù)載，它的取值范圍1128，這個(gè)乘數(shù)代表了可以接受的不等價(jià)鏈路的度量值的倍數(shù)，在這個(gè)范圍內(nèi)的鏈路都將被接受，并且被加入到路由表中。比如說有兩條鏈路，一條度量值