帧中继拓扑连接：

router1的s0/0端口与FR的s0/0端口连接!
router2的s0/0端口与FR的s0/1端口连接!
router3的s0/0端口与FR的s0/2端口连接!
帧中继交换机的模拟配置：

1. Router>enable
2. Router# config term
3. Router(config)# hostname FR
4. FR(config)# frame-relay switching
5. FR(config)# interface s0/0
6. FR(config-if)# encapsulation frame
7. FR(config-if)# frame lmi-type cisco
8. FR(config-if)# frame intf-type dce
9. FR(config-if)# frame route 102 interface s0/1 201
10. FR(config-if)# frame route 103 interface s0/2 301
11. FR(config-if)# clock rate 128000
12. FR(config-if)# no shutdown
13. FR(config-if)# exit
14. FR(config)# interface s0/1
15. FR(config-if)# encapsulation frame
16. FR(config-if)# frame lmi-type cisco
17. FR(config-if)# frame intf-type dce
18. FR(config-if)# frame route 201 interface s0/1 102
19. FR(config-if)# frame route 203 interface s0/2 302
20. FR(config-if)# clock rate 64000
21. FR(config-if)# no shutdown
22. FR(config-if)# exit
23. FR(config)# interface s0/2
24. FR(config-if)# encapsulation frame
25. FR(config-if)# frame lmi-type cisco
26. FR(config-if)# frame intf-type dce
27. FR(config-if)# frame route 301 interface s0/1 103
28. FR(config-if)# frame route 302 interface s0/2 203
29. FR(config-if)# clock rate 64000
30. FR(config-if)# no shutdown
31. FR(config-if)# exit

验证：
这里Status为Inactive的原因是对端路由器还没有配置。

1. FR#show fram route
2. Input Intf Input Dlci Output Intf Output Dlci Status
3. Serial0/0 102 Serial0/1 201 inactive
4. Serial0/0 103 Serial0/2 301 inactive
5. Serial0/1 201 Serial0/0 102 inactive
6. Serial0/1 203 Serial0/2 302 inactive
7. Serial0/2 301 Serial0/0 103 inactive
8. Serial0/2 302 Serial0/1 203 inactive

路由器的帧中继基本配置

1. R1(config)# interface s0/0
2. R1(config-if)# encapsulation frame //封装为帧中继
3. R1(config-if)# no frame inverse-arp //关闭自动获取
4. R1(config-if)# ip address 192.168.1.1 255.255.255.0
5. R1(config-if)# frame map ip 192.168.1.2 102
6. R1(config-if)# frame map ip 192.168.1.3 103
7. R1(config-if)# no shutdown
8.  
9. R2(config)# interface s0/0
10. R2(config-if)# encapsulation frame //封装为帧中继
11. R2(config-if)# no frame inverse-arp //关闭自动获取
12. R2(config-if)# ip address 192.168.1.2 255.255.255.0
13. R2(config-if)# frame map ip 192.168.1.1 201 //手工指定DLCI 和IP 的映射
14. R2(config-if)# no shutdown
15. R2(config-if)# interface lo 0
16. R2(config-if)# ip address 10.1.0.1 255.255.255.0
17. R2(config-if)# interface lo 1
18. R2(config-if)# ip address 10.1.1.1 255.255.255.0
19. R2(config-if)# interface lo 2
20. R2(config-if)# ip address 10.1.2.1 255.255.255.0
21. R2(config-if)# interface lo 3
22. R2(config-if)# ip address 10.1.3.1 255.255.255.0
23.  
24. R3(config)# interface s0/0
25. R3(config-if)# encapsulation frame //封装为帧中继
26. R3(config-if)# no frame inverse-arp //关闭自动获取
27. R3(config-if)# ip address 192.168.1.3 255.255.255.0
28. R3(config-if)# frame map ip 192.168.1.3 301 //手工指定DLCI 和IP 的映射
29. R3(config-if)# no shutdown
30. R3(config-if)# interface lo 0
31. R3(config-if)# ip address 172.16.0.1 255.255.255.0
32. R3(config-if)# interface lo 1
33. R3(config-if)# ip address 172.16.1.1 255.255.255.0
34. R3(config-if)# interface lo 2
35. R3(config-if)# ip address 172.16.2.1 255.255.255.0
36. R3(config-if)# interface lo 3
37. R3(config-if)# ip address 172.16.3.1 255.255.255.0

注意，在作DLCI 和IP 映射时，我们没有使用broadcast 参数!
验证：

1. R1#show frame-relay map
2. Serial0/0 (up): ip 192.168.1.2 dlci 102(0×66,0×1860), static,
3. CISCO, status defined, active
4. Serial0/0 (up): ip 192.168.1.3 dlci 103(0×67,0×1870), static,
5. CISCO, status defined, active
6. R1#ping 192.168.1.2
7.  
8. Type escape sequence to abort.
9. Sending 5, 100-byte ICMP Echos to 192.168.1.2, timeout is 2 seconds:
10. !!!!!
11. Success rate is 100 percent (5/5), round-trip min/avg/max = 8/45/96 ms
12. R1#ping 192.168.1.3
13.  
14. Type escape sequence to abort.
15. Sending 5, 100-byte ICMP Echos to 192.168.1.3, timeout is 2 seconds:
16. !!!!!
17. Success rate is 100 percent (5/5), round-trip min/avg/max = 16/51/100 ms