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步骤一:配置各路由器的IP地址,并使用ping命令确认直连接口相互可以ping通。
步骤二:在R1上配置到R2的回环接口的静态路由.
R1(config)#ip route 192.168.3.0 255.255.255.0 192.168.1.2
R1(config)#ip route 192.168.3.0 255.255.255.0 192.168.2.2[s1]
步骤三:分析:查看R1的路由表
R1#show ip route
Codes:C-connected,S-static,I-IGRP,R-RIP,M-mobile,B-BGP
D-EIGRP,EX-EIGRP external,O-OSPF,IA-OSPF inter area
N1-OSPF NSSA external type 1,N2-OSPF NSSA external type 2
E1-OSPF external type 1,E2-OSPF external type 2,E-EGP
i-IS-IS,su-IS-IS summary,L1-IS-IS level-1,L2-IS-IS level-2
ia-IS-IS inter area,*-candidate default,U-per-user static route
o-ODR,P-periodic downloaded static route
Gateway of last resort is not set
C 192.168.1.0/24 is directly connected,FastEthernet0/0
C 192.168.2.0/24 is directly connected,Serial1/1
S 192.168.3.0/24[1/0]via 192.168.1.2
[1/0]via 192.168.2.2
[s2]R1#
步骤三:先删除原先路由,调整静态路由
R1(config)#no ip route 192.168.3.0 255.255.255.0 192.168.2.2[s3]
R1(config)#ip route 192.168.3.0 255.255.255.0 192.168.2.2 100[s4]
步骤四:再次检查路由表,发现路由器没有做均分负载
R1#show ip route
Codes:C-connected,S-static,I-IGRP,R-RIP,M-mobile,B-BGP
D-EIGRP,EX-EIGRP external,O-OSPF,IA-OSPF inter area
N1-OSPF NSSA external type 1,N2-OSPF NSSA external type 2
E1-OSPF external type 1,E2-OSPF external type 2,E-EGP
i-IS-IS,su-IS-IS summary,L1-IS-IS level-1,L2-IS-IS level-2
ia-IS-IS inter area,*-candidate default,U-per-user static route
o-ODR,P-periodic downloaded static route
Gateway of last resort is not set
C 192.168.1.0/24 is directly connected,FastEthernet0/0
C 192.168.2.0/24 is directly connected,Serial1/1
S 192.168.3.0/24[1/0]via 192.168.1.2[s5]
步骤五:将R1的fa0/0的接口shutdown掉.再观察路由表
R1#show ip route
Codes:C-connected,S-static,I-IGRP,R-RIP,M-mobile,B-BGP
D-EIGRP,EX-EIGRP external,O-OSPF,IA-OSPF inter area
N1-OSPF NSSA external type 1,N2-OSPF NSSA external type 2
E1-OSPF external type 1,E2-OSPF external type 2,E-EGP
i-IS-IS,su-IS-IS summary,L1-IS-IS level-1,L2-IS-IS level-2
ia-IS-IS inter area,*-candidate default,U-per-user static route
o-ODR,P-periodic downloaded static route
Gateway of last resort is not set
C 192.168.2.0/24 is directly connected,Serial1/1
S 192.168.3.0/24[100/0]via 192.168.2.2[s6]
[s1]因为R1有两条路径到达R2的192.168.3.0/24的网络
[s2]在此发现R1在做均分负载.但是注意:R1与R2的广域网连接的速度与以太网连接网速度并不匹配.在此做法是不智的.
[s3]删除目的,是避免做均分负载
[s4]指出此条路由管理距离为100.需要注意的是默认的管理离是1.而且路由器永远会选择管理距离小的路由.
[s5]到达192.168.3.0/24目前下一跳为192.168.1.2/24
[s6]到达192.168.3.0/24现在使用192.168.2.2/24作为下一跳.
来自 “ ITPUB博客 ” ,链接:https://blog.itpub.net/69976869/viewspace-2761336/ ,如需转载,请注明出处,否则将追究法律责任。