电脑
GNS3软件
路由器IOS
通过gns3搭建拓扑图，如下
根据拓扑图配置各台路由的IP地址，并且使用ping命令确认个路由器的直连接口互通R1#conf tEnter configuration commands, one per line. End with CNTL/Z.R1(config)#int lo 0R1(config-if)#ip*Aug 15 01:27:06.272: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed state to upR1(config-if)#ip add 10.1.1.1 255.255.255.0R1(config-if)#no shR1(config-if)#int lo 1R1(config-if)#ip add*Aug 15 01:27:39.663: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback1, changed state to upR1(config-if)#ip add 10.1.2.1 255.255.255.0R1(config-if)#no shR1(config-if)#int lo 2R1(config-if)#ip a*Aug 15 01:28:01.977: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback2, changed state to upR1(config-if)#ip add 10.1.3.1 255.255.255.0R1(config-if)#no shR1(config-if)#int lo 3R1(config-if)#ip add *Aug 15 01:28:22.046: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback3, changed state to upR1(config-if)#ip add 10.1.4.1 255.255.255.0 R1(config-if)#no shR1(config)#int s2/1R1(config-if)#ip add 172.16.1.1 255.255.255.252R1(config-if)#no sh配置R1后通过show命令查看端口状态，
同样将R2 ,R3 的端口配置好IP地址R2#conf tEnter configuration commands, one per line. End with CNTL/Z.R2(config)#int s2/0R2(config-if)#ip add 172.16.1.2 255.255.255.252R2(config-if)#no shR2(config-if)#*Aug 15 01:34:30.307: %LINK-3-UPDOWN: Interface Serial2/0, changed state to up*Aug 15 01:34:31.311: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/0, changed state to upR2(config-if)#int s2/1R2(config-if)#ip add 172.16.1.5 255.255.255.252R2(config-if)#no shR2(config-if)#int lo *Aug 15 01:35:02.865: %LINK-3-UPDOWN: Interface Serial2/1, changed state to up*Aug 15 01:35:03.867: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/1, changed state to upR2(config-if)#int lo 0R2(config-if)#ipadd*Aug 15 01:35:05.343: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed state to upR2(config-if)#ip add 131.131.1.1 255.255.0.0R2(config-if)#no shR2(config-if)#*Aug 15 01:35:26.237: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/1, changed state to downR3的端口请自行配置！配置完成后通过show ip int bri ，查看端口信息
通过ping命令来确保直连端口的的连通性
在3台路由器上配置EIGRP协议，自制系统号为50,R1配置如下
R2配置如下,从图上可以看到，当配置了network 172.16.0.0 ，R1和R2的邻居起来了！
R3请自行配置，配置完成后通过命令show ip route查看各个路由器的路由表。R1路由表如下，可以看到R2和R3的路由条目
R2路由表如下
R3路由表如下
最后通过ping命令来查看连通性R1#ping 192.168.0.1Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 192.168.0.1, timeout is 2 seconds:!!!!!Success rate is 100 percent (5/5), round-trip min/avg/max = 19/19/20 msR1#ping 172.16.1.6Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 172.16.1.6, timeout is 2 seconds:!!!!!Success rate is 100 percent (5/5), round-trip min/avg/max = 20/20/20 msR1#
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