1、将一台路由器模拟成帧中继交换机
FR(config)#frame-relay ?
de-list Build a classification list to be used in setting the DE bit
switching enable frame relay pvc switching
输入:
FR(config)#frame-relay switching
FR(config)#frame-relay ?
de-list Build a classification list to be used in setting the DE bit
switching enable frame relay pvc switching
输入:
FR(config)#frame-relay switching
2、在帧中继交换机上配置
1)在接口上封装帧中继协议
FR(config-if)#encapsulation frame-relay ?
ietf Use RFC1490 encapsulation
<cr>
帧中继有两种封装协议:cisco和ietf,cisco产品默认为cisco。
cisco产品和非cisco产品连接要使用ietf
1)在接口上封装帧中继协议
FR(config-if)#encapsulation frame-relay ?
ietf Use RFC1490 encapsulation
<cr>
帧中继有两种封装协议:cisco和ietf,cisco产品默认为cisco。
cisco产品和非cisco产品连接要使用ietf
2)查看接口是否为DCE,若是,则配置时钟。
FR#show controllers serial 0
HD unit 0, idb = 0x94C7C, driver structure at 0x99A00
buffer size 1524 HD unit 0, V.35 DCE cable
显示为DCE,使用要配时钟:
FR(config-if)#clock rate 64000
有时候物理层没有UP起来,都可以使用该命令查看,如果是没有接线,则提示:
FR#show controllers serial 0
HD unit 0, idb = 0x94C7C, driver structure at 0x99A00
buffer size 1524 HD unit 0, no cable
FR#show controllers serial 0
HD unit 0, idb = 0x94C7C, driver structure at 0x99A00
buffer size 1524 HD unit 0, V.35 DCE cable
显示为DCE,使用要配时钟:
FR(config-if)#clock rate 64000
有时候物理层没有UP起来,都可以使用该命令查看,如果是没有接线,则提示:
FR#show controllers serial 0
HD unit 0, idb = 0x94C7C, driver structure at 0x99A00
buffer size 1524 HD unit 0, no cable
3)配置帧中继交换机的LMI类型
FR(config-if)#frame-relay lmi-type ?
cisco
ansi
q933a
总共有三种,常用cisco和ansi
可以通过show查看
FR#show frame-relay lmi
LMI Statistics for interface Serial0 (Frame Relay DTE) LMI TYPE = CISCO
在11.2以上版本的IOS中不需要设置,路由器可以自动感知。
4)强制将该端口设置为DCE.因为帧中继交换机一般为ISP端设备,为用户端设备提供时钟。
FR(config-if)#frame-relay intf-type ?
dce Configure a FR DCE
dte Configure a FR DTE
nni Configure a FR NNI
FR(config-if)#frame-relay intf-type dce
FR(config-if)#frame-relay intf-type ?
dce Configure a FR DCE
dte Configure a FR DTE
nni Configure a FR NNI
FR(config-if)#frame-relay intf-type dce
5)用DLCI标示网络中路由器的身份,配置DLCI的映射。
R1(config-if)#frame-relay ?
route frame relay route for pvc switching
FR(config-if)#frame-relay route ?
<16-1007> input dlci to be switched
DLCI值用10位表示,共有1024个值,但是只使用16-1007,其他为保留值。
FR(config-if)#frame-relay route ?
<16-1007> input dlci to be switched
FR(config-if)#frame-relay route 101 interface serial 1 ?
<16-1007> output dlci to use when switching
FR(config-if)#frame-relay route 101 interface serial 1 202
R1(config-if)#frame-relay ?
route frame relay route for pvc switching
FR(config-if)#frame-relay route ?
<16-1007> input dlci to be switched
DLCI值用10位表示,共有1024个值,但是只使用16-1007,其他为保留值。
FR(config-if)#frame-relay route ?
<16-1007> input dlci to be switched
FR(config-if)#frame-relay route 101 interface serial 1 ?
<16-1007> output dlci to use when switching
FR(config-if)#frame-relay route 101 interface serial 1 202
6)重复1-5步骤,对serial 1 进行配置
7)验证配置
FR#show frame-relay pvc
FR#show frame-relay pvc
PVC Statistics for interface Serial0 (Frame Relay DCE)
DLCI = 101, DLCI USAGE = SWITCHED, PVC STATUS = INACTIVE, INTERFACE = Serial0
input pkts 0 output pkts 0 in bytes 0
out bytes 0 dropped pkts 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
pvc create time 00:02:08, last time pvc status changed 00:02:08
Num Pkts Switched 0
PVC Statistics for interface Serial1 (Frame Relay DCE)
out bytes 0 dropped pkts 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
pvc create time 00:02:08, last time pvc status changed 00:02:08
Num Pkts Switched 0
PVC Statistics for interface Serial1 (Frame Relay DCE)
DLCI = 202, DLCI USAGE = SWITCHED, PVC STATUS = INACTIVE, INTERFACE = Serial1
input pkts 0 output pkts 0 in bytes 0
out bytes 0 dropped pkts 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
pvc create time 00:01:41, last time pvc status changed 00:01:41
Num Pkts Switched 0
out bytes 0 dropped pkts 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
pvc create time 00:01:41, last time pvc status changed 00:01:41
Num Pkts Switched 0
FR#show frame-relay route
Input Intf Input Dlci Output Intf Output Dlci Status
Serial0 101 Serial1 202 inactive
Serial1 202 Serial0 101 inactive
Input Intf Input Dlci Output Intf Output Dlci Status
Serial0 101 Serial1 202 inactive
Serial1 202 Serial0 101 inactive
3、在客户端进行配置
客户端配置相对简单
1)在该接口上封装帧中继协议
R1(config-if)#encapsulation frame-relay
2)配置LMI的类型
R1(config-if)#frame-relay lmi-type cisco
3)为该接口配置IP地址
R1(config-if)#ip address 192.168.1.101 255.255.255.0
4)为该接口配置DLCI值
R1(config-if)#frame-relay interface-dlci 101
默认情况下,IARP是开启的,只要在帧中继交换机为客户机指定了DLCI(步骤2中的第5)小步),则客户机会通过IARP自动获取DLCI值。使用这条命名不是必须的。
6)登陆另外一台作为客户端的路由器R2,重复步骤1-4.
7)查看配置
R2#show frame-relay pvc
客户端配置相对简单
1)在该接口上封装帧中继协议
R1(config-if)#encapsulation frame-relay
2)配置LMI的类型
R1(config-if)#frame-relay lmi-type cisco
3)为该接口配置IP地址
R1(config-if)#ip address 192.168.1.101 255.255.255.0
4)为该接口配置DLCI值
R1(config-if)#frame-relay interface-dlci 101
默认情况下,IARP是开启的,只要在帧中继交换机为客户机指定了DLCI(步骤2中的第5)小步),则客户机会通过IARP自动获取DLCI值。使用这条命名不是必须的。
6)登陆另外一台作为客户端的路由器R2,重复步骤1-4.
7)查看配置
R2#show frame-relay pvc
PVC Statistics for interface Serial0 (Frame Relay DTE)
DLCI = 202, DLCI USAGE = UNUSED, PVC STATUS = ACTIVE, INTERFACE = Serial0
input pkts 0 output pkts 1 in bytes 0
out bytes 30 dropped pkts 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 1 out bcast bytes 30 Num Pkts Switched 0
out bytes 30 dropped pkts 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 1 out bcast bytes 30 Num Pkts Switched 0
pvc create time 00:00:06, last time pvc status changed 00:00:06
R2#show frame-relay map
Serial0 (up): ip 192.168.1.101 dlci 202(0xCA,0x30A0), dynamic,
broadcast,, status defined, active
显示dlci值为动态分配。
Serial0 (up): ip 192.168.1.101 dlci 202(0xCA,0x30A0), dynamic,
broadcast,, status defined, active
显示dlci值为动态分配。
4、测试实验连通性。
在R2上ping R1
R2#ping 192.168.1.101
在R2上ping R1
R2#ping 192.168.1.101
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.101, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 60/60/60 ms
Sending 5, 100-byte ICMP Echos to 192.168.1.101, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 60/60/60 ms
转载于:https://blog.51cto.com/debug/71480