使用帧中继搭建的广域网案例
Frame-relay
实验环境
使用sisco 3640的四台.模拟实验。R6 与 R2 作为帧中继的节点。 R1 与 R3是帧中继网络的边缘路由设备。
在 R6 上的配置
R6(config)#frame-relay switching
在接口模式下封装帧中继
R6(config)#int ser 0/1
R6(config-if)#encapsulation frame-relay
R6(config-if)#frame-relay intf-type dce
R6(config-if)#clock rate 64000
选择信令格式
R6(config-if)#frame-relay lmi-type cisco
设置转发表
R6(config-if)#frame-relay route 100 interface serial 0/2 101
#从 100 管道过来的数据 转发到 0/2 口中的 101 管道
在帧中继网络节点的接口上的配置
R6(config)#int ser 0/2
因为此处使用的是 serial 线连接的路由器。
所以将线路类型设置成 dce 帧中继交换机之间使用非串口线连接。应该使用nni 这种连接类型
R6(config-if)#frame-relay intf-type dce
R6(config-if)#clock rate 64000
R6(config-if)#frame-relay lmi-type cisco #信令类型为cisco
R6(config-if)#frame-relay route 101 interface serial 0/1 100
#转发表只写针对于进口数据的转发规则。出口在对端已经指定完成。
R2上的配置
R2(config)#frame-relay switching
R2(config)#interface serial 0/1
R2(config-if)#encapsulation frame-relay
R2(config-if)#frame-relay intf-type dce
R2(config-if)#frame-relay lmi-type cisco
frame-relay route 102 interface serial 0/2 101
R2(config)#int ser 0/2
R2(config-if)#encapsulation frame-relay
R2(config-if)#frame-relay intf-type dte
R2(config-if)#frame-relay lmi-type cisco
R2(config-if)#frame-relay route 101 int ser 0/1 102
#查看管道状态
R2#show frame-relay pvc
PVC Statistics for interface Serial0/0 (Frame Relay DTE)
PVC Statistics for interface Serial0/1 (Frame Relay DCE)
Active Inactive Deleted Static
Local 0 0 0 0
Switched 0 1 0 0
Unused 0 0 0 0
DLCI = 102, DLCI USAGE = SWITCHED, PVC STATUS = INACTIVE, INTERFACE = Serial0/1
input pkts 0 output pkts 0 in bytes 0
out bytes 0 dropped pkts 0 in pkts dropped 0
out pkts dropped 0 out bytes dropped 0
in FECN pkts 0 in BECN pkts 0 out FECN pkts 0
out BECN pkts 0 in DE pkts 0 out DE pkts 0
out bcast pkts 0 out bcast bytes 0
30 second input rate 0 bits/sec, 0 packets/sec
30 second output rate 0 bits/sec, 0 packets/sec
switched pkts 0
Detailed packet drop counters:
no out intf 0 out intf down 0 no out PVC 0
in PVC down 0 out PVC down 0 pkt too big 0
shaping Q full 0 pkt above DE 0 policing drop 0
pvc create time 00:10:49, last time pvc status changed 00:10:49
PVC Statistics for interface Serial0/2 (Frame Relay DTE)
Active Inactive Deleted Static
Local 0 0 0 0
Switched 0 1 0 0
Unused 0 0 0 0
DLCI = 101, DLCI USAGE = SWITCHED, PVC STATUS = INACTIVE, INTERFACE = Serial0/2
input pkts 0 output pkts 0 in bytes 0
out bytes 0 dropped pkts 0 in pkts dropped 0
out pkts dropped 0 out bytes dropped 0
in FECN pkts 0 in BECN pkts 0 out FECN pkts 0
out BECN pkts 0 in DE pkts 0 out DE pkts 0
out bcast pkts 0 out bcast bytes 0
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
switched pkts 0
Detailed packet drop counters:
no out intf 0 out intf down 0 no out PVC 0
in PVC down 0 out PVC down 0 pkt too big 0
shaping Q full 0 pkt above DE 0 policing drop 0
pvc create time 00:10:04, last time pvc status changed 00:10:04
在边界的路由器上的配置
R1的配置
R1(config)#interface serial 0/1
R1(config-if)#frame-relay lmi-type cisco
R1(config-if)#frame-relay intf-type dte
R1(config-if)#frame-relay map ip 192.168.1.2 100
R1(config)#ip route 0.0.0.0 0.0.0.0 192.168.1.2
R3 的配置
R3(config)#interface serial 0/1
R3(config-if)#frame-relay lmi-type cisco
R3(config-if)#frame-relay intf-type dte
R3(config-if)#frame-relay map ip 192.168.1.1 102
R3(config)#ip route 0.0.0.0 0.0.0.0 192.168.1.1
使用如下命令：
show frame-relay pvc #查看vc的状态
show running #查看网络设备的配置
保证 vc的状态为active状态
将Serial端口 执行激活命令
查看管道的状态
R1
R1#show frame-relay pvc
PVC Statistics for interface Serial0/1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 100, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/1
input pkts 10 output pkts 18 in bytes 1040
out bytes 1662 dropped pkts 0 in pkts dropped 0
out pkts dropped 0 out bytes dropped 0
in FECN pkts 0 in BECN pkts 0 out FECN pkts 0
out BECN pkts 0 in DE pkts 0 out DE pkts 0
out bcast pkts 3 out bcast bytes 102
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
pvc create time 00:58:08, last time pvc status changed 00:58:08
R6
R6# show frame-relay pvc
PVC Statistics for interface Serial0/0 (Frame Relay DTE)
PVC Statistics for interface Serial0/1 (Frame Relay DCE)
Active Inactive Deleted Static
Local 0 0 0 0
Switched 1 0 0 0
Unused 0 0 0 0
DLCI = 100, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE = Serial0/1
input pkts 8 output pkts 0 in bytes 622
out bytes 0 dropped pkts 2 in pkts dropped 2
out pkts dropped 0 out bytes dropped 0
in FECN pkts 0 in BECN pkts 0 out FECN pkts 0
out BECN pkts 0 in DE pkts 0 out DE pkts 0
out bcast pkts 0 out bcast bytes 0
30 second input rate 0 bits/sec, 0 packets/sec
30 second output rate 0 bits/sec, 0 packets/sec
switched pkts 7
Detailed packet drop counters:
no out intf 0 out intf down 0 no out PVC 0
in PVC down 0 out PVC down 2 pkt too big 0
shaping Q full 0 pkt above DE 0 policing drop 0
pvc create time 01:45:07, last time pvc status changed 00:41:50
PVC Statistics for interface Serial0/2 (Frame Relay DCE)
Active Inactive Deleted Static
Local 0 0 0 0
Switched 1 0 0 0
Unused 0 0 0 0
DLCI = 101, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE = Serial0/2
input pkts 0 output pkts 7 in bytes 0
out bytes 588 dropped pkts 0 in pkts dropped 0
out pkts dropped 0 out bytes dropped 0
in FECN pkts 0 in BECN pkts 0 out FECN pkts 0
out BECN pkts 0 in DE pkts 0 out DE pkts 0
out bcast pkts 0 out bcast bytes 0
30 second input rate 0 bits/sec, 0 packets/sec
30 second output rate 0 bits/sec, 0 packets/sec
switched pkts 0
Detailed packet drop counters:
no out intf 0 out intf down 0 no out PVC 0
in PVC down 0 out PVC down 0 pkt too big 0
shaping Q full 0 pkt above DE 0 policing drop 0
pvc create time 01:29:51, last time pvc status changed 00:41:34
R2
R2#show frame-relay pvc
PVC Statistics for interface Serial0/0 (Frame Relay DTE)
PVC Statistics for interface Serial0/1 (Frame Relay DCE)
Active Inactive Deleted Static
Local 0 0 0 0
Switched 1 0 0 0
Unused 0 0 0 0
DLCI = 102, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE = Serial0/1
input pkts 0 output pkts 0 in bytes 0
out bytes 0 dropped pkts 0 in pkts dropped 0
out pkts dropped 0 out bytes dropped 0
in FECN pkts 0 in BECN pkts 0 out FECN pkts 0
out BECN pkts 0 in DE pkts 0 out DE pkts 0
out bcast pkts 0 out bcast bytes 0
30 second input rate 0 bits/sec, 0 packets/sec
30 second output rate 0 bits/sec, 0 packets/sec
switched pkts 0
Detailed packet drop counters:
no out intf 0 out intf down 0 no out PVC 0
in PVC down 0 out PVC down 0 pkt too big 0
shaping Q full 0 pkt above DE 0 policing drop 0
pvc create time 01:26:40, last time pvc status changed 00:00:11
PVC Statistics for interface Serial0/2 (Frame Relay DTE)
Active Inactive Deleted Static
Local 0 0 0 0
Switched 1 0 0 0
Unused 0 0 0 0
DLCI = 101, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE = Serial0/2
input pkts 7 output pkts 0 in bytes 588
out bytes 0 dropped pkts 14 in pkts dropped 14
out pkts dropped 0 out bytes dropped 0
in FECN pkts 0 in BECN pkts 0 out FECN pkts 0
out BECN pkts 0 in DE pkts 0 out DE pkts 0
out bcast pkts 0 out bcast bytes 0
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
switched pkts 0
Detailed packet drop counters:
no out intf 0 out intf down 7 no out PVC 0
in PVC down 0 out PVC down 7 pkt too big 0
shaping Q full 0 pkt above DE 0 policing drop 0
pvc create time 01:25:57, last time pvc status changed 00:47:37
R3
R3#show frame-relay pvc
PVC Statistics for interface Serial0/0 (Frame Relay DTE)
PVC Statistics for interface Serial0/1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 102, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/1
input pkts 10 output pkts 10 in bytes 1040
out bytes 1040 dropped pkts 0 in pkts dropped 0
out pkts dropped 0 out bytes dropped 0
in FECN pkts 0 in BECN pkts 0 out FECN pkts 0
out BECN pkts 0 in DE pkts 0 out DE pkts 0
out bcast pkts 0 out bcast bytes 0
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
pvc create time 00:37:29, last time pvc status changed 00:09:09
测试：
R1#ping 192.168.3.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.3.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 24/57/96 ms
R3#ping 192.168.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/76/124 ms