帧中继全网拓扑试验配置
公司总部和分支机构的通信除了用DDN之外，另外还可以采用帧中继。路由器A是总公司，B和C是分支机构，利用帧中继通信的具体配置可以如下：
试验环境：
首先要清楚全网示意图：
A：连接帧中继的端口：202.110.100.1 255.255.255.0
局域网端口192.168.10.1 255.255.255.0
B：连接帧中继的端口：202.110.100.2 255.255.255.0
局域网端口192.168.10.2 255.255.255.0
C：连接帧中继的端口：202.110.100.3 255.255.255.0
局域网端口192.168.10.3 255.255.255.0
通过对帧中继的配置，实现不同网段间的通信，那么试验就成功了。
在A上做：
router>en
Router#config t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#host A
A(config)#int e0
A(config-if)#ip addr 192.168.10.1 255.255.255.0
A(config-if)#no shut
%LINK-3-UPDOWN: Interface Ethernet0, changed state to up
A(config-if)#int s0
A(config-if)#ip addr 202.110.100.1 255.255.255.0
A(config-if)#encap frame-relay
A(config-if)#frame-relay int
A(config-if)#frame-relay int
A(config-if)#frame-relay interface-dlci 102
A(config-if)#frame-relay interface-dlci 103
A(config-if)#bandwidth 64
A(config-if)#no shut
%LINK-3-UPDOWN: Interface Serial0, changed state to up
A(config-if)#exit
%LINK-3-UPDOWN: Interface Serial0, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to down
21:49:39: %FR-5-DLCICHANGE: Interface Serial0
A(config)#router eigrp 100
A(config-router)#net 202.110.100.0
A(config-router)#net 192.168.10.0
A(config-router)#exit
%LINK-3-UPDOWN: Interface Serial0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to up
A(config)#^Z
%SYS-5-CONFIG_I: Configured from console by console
再B上做：
Router>en
Router#config t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#host B
B(config)#int e0
B(config-if)#ip addr 192.168.20.1 255.255.255.0
B(config-if)#no shut
%LINK-3-UPDOWN: Interface Ethernet0, changed state to up
B(config-if)#int s0
B(config-if)#ip addr 202.110.100.2 255.255.255.0
B(config-if)#encap frame-relay
B(config-if)#frame-relay interface-dlci 201
B(config-if)#frame-relay interface-dlci 203
B(config-if)#bandwidth 64
B(config-if)#no shut
%LINK-3-UPDOWN: Interface Serial0, changed state to up
B(config-if)#exit
B(config)#router eigrp 100
B(config-router)#net 192.168.20.0
B(config-router)#net 202.110.100.0
B(config-router)#exit
B(config)#^Z
%SYS-5-CONFIG_I: Configured from console by console
在C上做：
Router>
Router>en
Router#config t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#host C
C(config)#int e0
C(config-if)#ip addr 192.168.30.1 255.255.255.0
C(config-if)#no shut
%LINK-3-UPDOWN: Interface Ethernet0, changed state to up
C(config-if)#int s0
C(config-if)#ip addr 202.110.100.3 255.255.255.0
C(config-if)#encap frame-relay
C(config-if)#frame-relay int
C(config-if)#frame-relay interface-dlci 301
C(config-if)#frame-relay interface-dlci 302
C(config-if)#bandwidth 64
C(config-if)#no shut
%LINK-3-UPDOWN: Interface Serial0, changed state to up
C(config-if)#exit
C(config)#router eigrp 100
C(config-router)#net 202.110.100.0
C(config-router)#net 192.168.30.0
C(config-router)#exit
C(config)#exit
在A上测试路由：
A#
A#show ip ro
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
U - per-user static route
Gateway of last resort is not set
C 192.168.10.0 is directly connected, Ethernet0
C 202.110.100.0 is directly connected, Serial0
D 192.168.20.0 [90/3061760] via 202.110.100.2, 00:03:43, Serial0
D 192.168.30.0 [90/3061760] via 202.110.100.3, 00:00:28, Serial0
在B上测试路由：
B#
B#show ip ro
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
U - per-user static route
Gateway of last resort is not set
C 192.168.20.0 is directly connected, Ethernet0
C 202.110.100.0 is directly connected, Serial0
D 192.168.10.0 [90/3061760] via 202.110.100.1, 00:02:27, Serial0
D 192.168.30.0 [90/3061760] via 202.110.100.3, 00:00:17, Serial0
在C上测试路由：
C#
C#
C#show ip ro
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
U - per-user static route
Gateway of last resort is not set
C 192.168.30.0 is directly connected, Ethernet0
C 202.110.100.0 is directly connected, Serial0
D 192.168.10.0 [90/3061760] via 202.110.100.1, 00:11:44, Serial0
D 192.168.20.0 [90/3061760] via 202.110.100.2, 00:11:44, Serial0
互通情况测试：
C#ping 192.168.30.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.30.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
C#ping 192.168.20.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.20.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
C#ping 192.168.10.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.10.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
C#ping 202.110.100.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 202.110.100.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
C#ping 202.110.100.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 202.110.100.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
C#ping 202.110.100.3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 202.110.100.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
本文转自shenleigang 51CTO博客，原文链接：http://blog.51cto.com/shenleigang/150696，如需转载请自行联系原作者
