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

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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