Router_Switchboard Configuration<15>
帧中继交换机配置
Target:
帧中继交换机配置
实验准备：
配置知识、帧中继知识。
实验设备：
路由器（带串口） 4台
V.35线缆（DTE/DCE） 3条
实验原理:
帧中继的标准可以为帧中继网络中可配置和管理的永久虚电路（PVC）进行编址，帧中继永久虚电路由数据链路连接标识符（DLCI）来标识。
当帧中继为多个逻辑数据会话提供多路复用时，ISP的交换设备首先要建立一个表，该表用来将不同的DLCI值映射到出站端口，其次，当接收到一个数据帧时，交换设备分析其连接标识符，并将该数据帧发送到相应的端口。最后，在第一个数据帧发送之前，将建立一条通往目的地的完全路径。
实验拓扑图：
Step:
步骤1 配置帧中继交换机。
FR(config)# frame-relay switching
FR(config)# interface Serial0/0
FR(config-if)#no ip address
FR(config-if)#encapsulation frame-relay IETF
FR(config-if)#frame-relay lmi-type ansi
FR(config-if)#frame-relay intf-type dce
FR(config-if)#frame-relay route 16 interface Serial0/2 37
FR(config-if)#frame-relay route 17 interface Serial0/1 26
FR(config)#interface Serial0/1
FR(config-if)#no ip address
FR(config-if)#encapsulation frame-relay IETF
FR(config-if)#frame-relay lmi-type ansi
FR(config-if)#frame-relay intf-type dce
FR(config-if)#frame-relay route 26 interface Serial0/0 17
FR(config-if)#frame-relay route 27 interface Serial0/2 36
FR(config)#interface Serial0/2
FR(config-if)#no ip address
FR(config-if)#encapsulation frame-relay IETF
FR(config-if)#frame-relay lmi-type ansi
FR(config-if)#frame-relay intf-type dce
FR(config-if)#frame-relay route 36 interface Serial0/1 27
FR(config-if)#frame-relay route 37 interface Serial0/0 16
步骤2 配置路由器。
Router A(config)# interface Serial0/0
Router A(config-if)#ip address 10.1.1.1 255.255.255.0
Router A(config-if)#encapsulation frame-relay IETF
Router A(config-if)#frame-relay interface-dlci 16
Router A(config-if)#frame-relay interface-dlci 17
实验 36 帧中继交换机配置 ・63・
Router A(config-if)#frame-relay lmi-type ansi
Router B(config)# interface Serial0/0
Router B(config-if)#ip address 10.1.1.2 255.255.255.0
Router B(config-if)#encapsulation frame-relay IETF
Router B(config-if)#frame-relay interface-dlci 26
Router B(config-if)#frame-relay interface-dlci 27
Router B(config-if)#frame-relay lmi-type ansi
Router C(config)# interface Serial0/0
Router C(config-if)# interface Serial0/0
Router C(config-if)#ip address 10.1.1.3 255.255.255.0
Router C(config-if)#encapsulation frame-relay IETF
Router C(config-if)#frame-relay interface-dlci 36
Router C(config-if)#frame-relay interface-dlci 37
Router C(config-if)#frame-relay lmi-type ansi
步骤3 验证帧中继交换机配置。
FR#show frame-relay route
Input Intf Input Dlci Output Intf Output Dlci Status
Serial0/0 16 Serial0/2 37 active
Serial0/0 17 Serial0/1 26 active
Serial0/1 26 Serial0/0 17 active
Serial0/1 27 Serial0/2 36 active
Serial0/2 36 Serial0/1 27 active
Serial0/2 37 Serial0/0 16 active
FR#show frame-relay pvc
PVC Statistics for interface Serial0/0 (Frame Relay DCE)
Active Inactive Deleted Static
Local 0 0 0 0
Switched 2 0 0 0
Unused 0 0 0 0
DLCI = 16, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE = Serial0/0
input pkts 23 output pkts 22 in bytes 2170
out bytes 2140 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 23
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 00:21:46, last time pvc status changed 00:15:05
DLCI = 17, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE = Serial0/0
input pkts 13 output pkts 12 in bytes 1130
out bytes 1100 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 13
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 00:21:33, last time pvc status changed 00:09:06
PVC Statistics for interface Serial0/1 (Frame Relay DCE)
Active Inactive Deleted Static
Local 0 0 0 0
Switched 2 0 0 0
Unused 0 0 0 0
DLCI = 26, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE = Serial0/1
input pkts 12 output pkts 13 in bytes 1100
out bytes 1130 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 12
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 00:20:25, last time pvc status changed 00:10:06
DLCI = 27, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE = Serial0/1
input pkts 12 output pkts 13 in bytes 1100
out bytes 1130 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 12
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 00:20:03, last time pvc status changed 00:10:06
PVC Statistics for interface Serial0/2 (Frame Relay DCE)
Active Inactive Deleted Static
Local 0 0 0 0
Switched 2 0 0 0
Unused 0 0 0 0
DLCI = 36, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE = Serial0/2
input pkts 13 output pkts 12 in bytes 1130
out bytes 1100 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 13
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 00:19:19, last time pvc status changed 00:09:09
DLCI = 37, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE = Serial0/2
input pkts 22 output pkts 23 in bytes 2140
out bytes 2170 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 22
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 00:19:04, last time pvc status changed 00:15:22
FR#show frame-relay lmi
LMI Statistics for interface Serial0/0 (Frame Relay DCE) LMI TYPE = ANSI
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Rcvd 114 Num Status msgs Sent 114
Num Update Status Sent 0 Num St Enq. Timeouts 18
LMI Statistics for interface Serial0/1 (Frame Relay DCE) LMI TYPE = ANSI
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Rcvd 67 Num Status msgs Sent 67
Num Update Status Sent 0 Num St Enq. Timeouts 1
LMI Statistics for interface Serial0/2 (Frame Relay DCE) LMI TYPE = ANSI
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Rcvd 100 Num Status msgs Sent 100
Num Update Status Sent 0 Num St Enq. Timeouts 14
Router A#show frame-relay map
Serial0/0 (up): ip 10.1.1.2 dlci 17(0x11,0x410), dynamic,
broadcast,
IETF, status defined, active
Serial0/0 (up): ip 10.1.1.3 dlci 16(0x10,0x400), dynamic,
broadcast,
IETF, status defined, active
【注意事项】
封装广域网协议时，要求V.35线缆的两个端口封装协议一致，否则无法建立链路。
【参考配置】
FR#show running-config
Building configuration...
Current configuration : 574 bytes
!
version RGNOS 10.1.00(4), Release(18443)(Tue Jul 17 21:16:17 CST 2007 -ubu1server)
hostname FR
!
interface Serial0/0
no ip address
encapsulation frame-relay IETF
serial restart-delay 0
frame-relay lmi-type ansi
frame-relay intf-type dce
frame-relay route 16 interface Serial0/2 37
frame-relay route 17 interface Serial0/1 26
!
interface Serial0/1
no ip address
encapsulation frame-relay IETF
serial restart-delay 0
frame-relay lmi-type ansi
frame-relay intf-type dce
frame-relay route 26 interface Serial0/0 17
frame-relay route 27 interface Serial0/2 36
!
interface Serial0/2
no ip address
encapsulation frame-relay IETF
serial restart-delay 0
frame-relay lmi-type ansi
frame-relay intf-type dce
frame-relay route 36 interface Serial0/1 27
frame-relay route 37 interface Serial0/0 16!
!
line con 0
line aux 0
line vty 0 4
login
!
end
Router A#show running-config
Building configuration...
Current configuration : 581 bytes
!
version RGNOS 10.1.00(4), Release(18443)(Tue Jul 17 21:16:17 CST 2007 -ubu1server)
hostname Router A
!
interface Serial0/0
ip address 10.1.1.1 255.255.255.0
encapsulation frame-relay IETF
serial restart-delay 0
frame-relay interface-dlci 16
frame-relay interface-dlci 17
frame-relay lmi-type ansi!
interface GigabitEthernet 0/0
duplex auto
speed auto
!
interface FastEthernet 1/0
ip address 192.168.2.1 255.255.255.0
duplex auto
speed auto
!
line con 0
line aux 0
line vty 0 4
login
!
end
Router B#show running-config
Building configuration...
Current configuration : 581 bytes
!
version RGNOS 10.1.00(4), Release(18443)(Tue Jul 17 21:16:17 CST 2007 -ubu1server)
hostname Router B
!
interface Serial0/0
ip address 10.1.1.2 255.255.255.0
encapsulation frame-relay IETF
serial restart-delay 0
frame-relay interface-dlci 26
frame-relay interface-dlci 27
frame-relay lmi-type ansi
!
line con 0
line aux 0
line vty 0 4
login
!
end
Router C#show running-config
Building configuration...
Current configuration : 581 bytes
!
version RGNOS 10.1.00(4), Release(18443)(Tue Jul 17 21:16:17 CST 2007 -ubu1server)
hostname Router C
!
interface Serial0/0
ip address 10.1.1.3 255.255.255.0
encapsulation frame-relay IETF
serial restart-delay 0
frame-relay interface-dlci 36
frame-relay interface-dlci 37
frame-relay lmi-type ansi!
!
line con 0
line aux 0
line vty 0 4
login
!
end