实验十四、路由器广域网Frame-Relay 封装配置

实验十四、路由器广域网Frame-Relay 封装配置
一、实验目的
1. 掌握广域网帧中继封装配置
2. 理解DLCI、LMI 等概念
3. 理解封装匹配
二、应用环境
1. 企业环境中异地的互连通常要经过第三方的网络，比如网通、电信等等，所以与局域网
的配置不同
2. 广域网通常需要付费、带宽比较有限、可靠性相比局域网要低
三、实验设备
1. DCR-1751 两台
2. CR-V35MT 一条
3. CR-V35FC 一条
四、实验拓扑



五、实验要求
Router-A Router-B
接口 IP 地址 接口 IP 地址 S1/1 DCE 192.168.1.1 S1/0 DTE 192.168.1.2
六、实验步骤
第一步 Router-A 的配置
Router>enable ！进入特权模式
Router #config ！进入全局配置模式
Router _config#hostname Router-A ！修改机器名Router-A_config#interface s1/1 ！进入接口模式
Router-A_config_s1/0#ip address 192.168.1.1 255.255.255.0 ！配置IP 地址
Router-A_config_s1/1#encapsulation frame-relay ！封装帧中继协议
Router-A_config_s1/1#frame-relay local-dlci 17 ！设置本地DLCI 号
Router-A_config_s1/1# frame-relay intf-type dce ！配置FR 的DCE
Router-A_config_s1/1# frame-relay map 192.168.1.2 pvc 17 broadcast
！配置DLCI 与对端IP 的映射
Router-A_config_s1/0#physical-layer speed 64000 ！配置DCE 时钟频率
Router-A_config_s1/0#no shutdown
Router-A_config_s1/0#^Z ！按ctrl + z 进入特权模式
第二步：查看配置
Router-A#show interface s1/1 ！查看接口状态
Serial1/1 is up, line protocol is down
Mode=Sync DCE Speed=64000
DTR=UP,DSR=UP,RTS=UP,CTS=UP,DCD=UP
Interface address is 192.168.1.1/24
MTU 1500 bytes, BW 64 kbit, DLY 2000 usec
Encapsulation Frame-relay, loopback not set ！查看封装协议
Keepalive set(10 sec)
FrameRelay DCE, LMI type is DCISCO, LMI DLCI 1023
LMI DCE Link Errors 5, Protocol Errors 0, Inactives 0
T392 15, N392 3, N393 4
Recvd Octets 242, Recvd Frames 11, Recvd Discards 0
Sent Octets 280, Sent Frames 21, Sent Discards 0
Recvd Errors 11, Sent Errors 0, Recvd Unknowns 0
60 second input rate 20 bits/sec, 0 packets/sec!
60 second output rate 19 bits/sec, 0 packets/sec!
746 packets input, 18234 bytes, 6 unused_rx, 0 no buffer
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
1167 packets output, 25752 bytes, 8 unused_tx, 0 underruns
error:
0 clock, 0 grace
PowerQUICC SCC specific errors:
0 recv allocb mblk fail 0 recv no buffer
0 transmitter queue full 0 transmitter hwqueue_full
Router-A#show frame-relay ！查看帧中继状态信息
Frame Relay/IP state
Serial1/1 DOWN
======================================================================
=======
Port DLCI State remote IP local IP Type ======================================================================
=======
Serial1/1 17 INACTIVE 192.168.1.2 M
第三步：Router-B 的配置
Router>enable ！进入特权模式
Router #config ！进入全局配置模式
Router _config#hostname Router-B ！修改机器名
Router-B_config#interface s1/0 ！进入接口模式
Router-B_config_s1/0#ip address 192.168.1.2 255.255.255.0 ！配置IP 地址
Router-B_config_s1/1#encapsulation frame-relay ！封装帧中继协议
Router-B_config_s1/1#frame-relay local-dlci 17 ！设置本地DLCI 号
Router-B_config_s1/1# frame-relay intf-type dte ！配置FR 的DTE
Router-B_config_s1/1# frame-relay map 192.168.1.1 pvc 17 broadcast
！配置DLCI 与对端IP 的映射
Router-B_config_s1/0#no shutdown
Router-B_config_s1/0#^Z ！按ctrl + z 进入特权模式
第四步：查看配置
Router-A#show interface s1/0 ！查看接口状态
Router-A#show frame-relay ！查看帧中继状态信息
第五步：测试连通性
Router-A#ping 192.168.1.2
PING 192.168.1.2 (192.168.1.2): 56 data bytes
!!!!!
--- 192.168.1.2 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max = 20/22/30 ms