实验十五、帧中继交换机的配置
一、 实验目的
1. 掌握FRAM-RELAY SWITCH 的配置
2. 理解DLCI、LMI 等概念
二、 应用环境
假设在银行系统里，总行和各分理处需要进行通讯，而分理处之间不需要通讯，帧中继是最
好的选择
三、 实验设备
1. DCR-1751 三台
2. DCR-2630 （安装相应模块满足三个serial 接口） 一台
3. CR-V35FC 三条
4. CR-V35MT 三条
四、 实验拓扑
五、 实验要求
配置表：
ROUTER-A ROUTER-B ROUTER-CS1/1 192.168.1.1/24 S1/0 192.168.1.2/24 S0/3 192.168.1.3/24
PVC DLCI 如图所示
六、 实验步骤
第一步：配置帧中继交换机（配置前请恢复原厂设置）
Router#conf
Router_config#hostname frswitch
frswitch_config# interface Serial2/0 ！进入接口配置模式
frswitch_config_s2/0# encapsulation frame-relay ！封装帧中继
frswitch_config_s2/0#frame-relay intf-type dce ！配置接口类型
frswitch_config_s2/0# physical-layer speed 64000 ！配置时钟频率
frswitch_config# interface Serial2/1
frswitch_config_s2/1# encapsulation frame-relay
frswitch_config_s2/1#frame-relay intf-type dce
frswitch_config_s2/1# physical-layer speed 64000
frswitch_config# interface Serial2/3
frswitch_config_s2/3# encapsulation frame-relay
frswitch_config_s2/3#frame-relay intf-type dce
frswitch_config_s2/3# physical-layer speed 64000
frswitch_config_s2/3#exit
frswitch_config# frswitch Serial2/0 100 Serial2/1 200 ！配置PVC 转发表
frswitch_config#frswitch Serial2/0 110 Serial2/3 300
第二步：配置路由器A、B、C
Router-A#conf
Router-A_config# interface Serial1/1
Router-A_config_s1/1# 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
Router-B#conf
Router-B_config# interface Serial1/0
Router-B_config_s1/0# ip address 192.168.1.2 255.255.255.0
Router-B_config_s1/0#encapsulation frame-relay
_config#int s0/3
Router-C_config_s0/3#
Router-C #conf
Router-C _config#int s0/3
Router-C _config_s0/3#ip address 192.168.1.3 255.255.255.0
Router-C _config_s0/3# encapsulation frame-relay
第三步：查看各路由器接口状态
Router-A#sh int s1/1Serial1/1 is up, line protocol is up
Mode=Sync DTE
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
Keepalive set(10 sec)
FrameRelay DTE, LMI type Autosense
LMI DTE Link Errors 1, Protocol Errors 0, Inactives 0
T391 10, N391 6, N392 3, N393 4
Recvd Octets 15177, Recvd Frames 913, Recvd Discards 2
Sent Octets 12767, Sent Frames 912, Sent Discards 0
Recvd Errors 0, Sent Errors 0, Recvd Unknowns 0
60 second input rate 15 bits/sec, 0 packets/sec!
60 second output rate 12 bits/sec, 0 packets/sec!
987 packets input, 18264 bytes, 5 unused_rx, 0 no buffer
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
1043 packets output, 17759 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-B#sh int s1/0
Serial1/0 is up, line protocol is up
Mode=Sync DTE
DTR=UP,DSR=UP,RTS=UP,CTS=UP,DCD=UP
Interface address is 192.168.1.2/24
MTU 1500 bytes, BW 64 kbit, DLY 2000 usec
Encapsulation Frame-relay, loopback not set
Keepalive set(10 sec)
FrameRelay DTE, LMI type Autosense
LMI DTE Link Errors 1, Protocol Errors 0, Inactives 0
T391 10, N391 6, N392 3, N393 4
Recvd Octets 12867, Recvd Frames 834, Recvd Discards 0
Sent Octets 11779, Sent Frames 836, Sent Discards 3
Recvd Errors 0, Sent Errors 0, Recvd Unknowns 0
60 second input rate 14 bits/sec, 0 packets/sec!
60 second output rate 12 bits/sec, 0 packets/sec!
905 packets input, 15828 bytes, 3 unused_rx, 0 no buffer
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
1036 packets output, 18275 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-C#sh int s0/3
Serial0/3 is up, line protocol is up
Mode=Sync DTE
DTR=UP,DSR=UP,RTS=UP,CTS=UP,DCD=UP
Interface address is 192.168.1.3/24
MTU 1500 bytes, BW 64 kbit, DLY 2000 usec
Encapsulation Frame-relay, loopback not set
Keepalive set(10 sec)
FrameRelay DTE, LMI type Autosense
LMI DTE Link Errors 1, Protocol Errors 0, Inactives 0
T391 10, N391 6, N392 3, N393 4
Recvd Octets 472, Recvd Frames 31, Recvd Discards 0
Sent Octets 464, Sent Frames 33, Sent Discards 0
Recvd Errors 0, Sent Errors 0, Recvd Unknowns 0
60 second input rate 14 bits/sec, 0 packets/sec!
60 second output rate 12 bits/sec, 0 packets/sec!
31 packets input, 534 bytes, 7 unused_rx, 0 no buffer
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
41 packets output, 722 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
第四步：查看帧中继状态
Router-A#sh frame-relay
Frame Relay/IP state
Serial1/1 UP
======================================================================
Port DLCI State remote IP local IP Type
======================================================================
Serial1/1 100 ACTIVE 192.168.1.2 192.168.1.1 I
Serial1/1 110 ACTIVE 192.168.1.3 192.168.1.1 I
Router-B#sh frame-relay
Frame Relay/IP state
Serial1/0 UP
====================================================================== Port DLCI State remote IP local IP Type
======================================================================
Serial1/0 200 ACTIVE 192.168.1.1 192.168.1.2 I
Router-C#sh frame-relay
Frame Relay/IP state
Serial0/3 UP
======================================================================
Port DLCI State remote IP local IP Type
======================================================================
Serial0/3 300 ACTIVE 192.168.1.1 192.168.1.3 I
