Configuring a Frame Relay Switch Lab B
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Objective: In this lab, you will configure a frame relay router and network. Once your configuration is complete, you will use basic techniques to test connectivity and view your DLCI mappings.
Hardware Requirements
• One router with two serial ports
• Two routers with one serial port
• Two back to back DTE/DCE serial cables
• IOS version 12.x or later
• A PC running a terminal emulation program
• Cisco console kit
Setup
• Configure the cabling as shown in the network diagram
• If the routers have a startup-config, erase it and perform a reload of the routers.
Configuration of the Frame Relay Router
Router>enable
Router#conf t
Router(config)#hostname FR
FR(config)#enable password cisco
FR(config)#frame-relay switching
FR(config-if)#int s0
FR(config-if)# no ip address
FR(config-if)# encapsulation frame-relay
FR(config-if)# clockrate 64000
FR(config-if)# frame-relay lmi-type ansi
FR(config-if)# frame-relay intf-type dce
FR(config-if)# frame-relay route 100 interface Serial1 200
FR(config-if)# no shut
FR(config-if)#int s1
FR(config-if)# no ip address
FR(config-if)# encapsulation frame-relay
FR(config-if)# clockrate 64000
FR(config-if)# frame-relay lmi-type ansi
FR(config-if)# frame-relay intf-type dce
FR(config-if)# frame-relay route 200 interface Serial0 100
FR(config-if)# no shut
FR(config-line)#line vty 0 4
FR(config-line)# password cisco
FR(config-line)# login
FR(config-line)#end
FR#write
Configuration of Router 1
Router>enable
Router#conf t
Router(config)#hostname R1
R1(config)#enable password cisco
R1(config-line)#line vty 0 4
R1(config-line)# password cisco
R1(config-line)# login
R1(config)#int loopback 0
R1(config-if)#ip add 1.1.1.1 255.255.255.255
R1(config-if)#no shut
R1(config-if)#int s0
R1(config-if)# encapsulation frame-relay
R1(config-if)# frame-relay lmi-type ansi
R1(config-if)# no shut
R1(config)#int Serial0.1 point-to-point
R1(config-subif)# ip address 192.168.1.1 255.255.255.0
R1(config-subif)# frame-relay interface-dlci 100
R1(config)#ip route 0.0.0.0 0.0.0.0 192.168.1.2
R1#write
Configuration of Router 2
Router>enable
Router#conf t
Router(config)#hostname R2
R2(config)#enable password cisco
R2(config-line)#line vty 0 4
R2(config-line)# password cisco
R2(config-line)# login
R2(config)#int loopback 0
R2(config-if)#ip add 2.2.2.2 255.255.255.255
R2(config-if)#no shut
R2(config)#int s0
R2(config-if)# no ip address
R2(config-if)# encapsulation frame-relay
R2(config-if)# frame-relay lmi-type ansi
R2(config-if)# no shut
R2(config-if)#interface Serial0.1 point-to-point
R2(config-subif)# ip address 192.168.1.2 255.255.255.0
R2(config-subif)# frame-relay interface-dlci 200
R2(config-if)#no ip classless
R2(config)#ip route 0.0.0.0 0.0.0.0 192.168.1.1
R2#write
Testing Connectivity of the Frame Relay Router
FR#sho frame route
Input Intf Input Dlci Output Intf Output Dlci
Status
Serial0 100 Serial1 200 active
Serial1 200 Serial0 100 active
FR#
Testing Connectivity of Router 1
R1#ping 192.168.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/32/36 ms
R1#ping 192.168.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 60/61/64 ms
R1#show frame-relay map
Serial0.1 (up): point-to-point dlci, dlci 100(0x64,0x1840), broadcast status defined, active
R1#sho ip route
(Output omitted)
Gateway of last resort is 192.168.1.2 to network 0.0.0.0
1.0.0.0/32 is subnetted, 1 subnets
C 1.1.1.1 is directly connected, Loopback0
C 192.168.1.0/24 is directly connected, Serial0.1
S* 0.0.0.0/0
R1#
Testing Connectivity of Router 2
R2#ping 192.168.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/32/36 ms
R2#ping 192.168.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 60/62/68 ms
R2#sho frame map
Serial0.1 (up): point-to-point dlci, dlci 200(0xC8,0x3080), broadcast status defined, active
R2#sho ip route
(Output omitted)
Gateway of last resort is 192.168.1.1 to network 0.0.0.0
2.0.0.0/32 is subnetted, 1 subnets
C 2.2.2.2 is directly connected, Loopback0
C 192.168.1.0/24 is directly connected, Serial0.1
S* 0.0.0.0/0 [1/0] via 192.168.1.1
R2#
Frame Relay Monitoring
The show interface or show interface serial are the most common commands which show a wide variety of information including showing you the DLCI used for LMI. When monitoring Frame Relay information on the router, a number of items are typically monitored including DLCI and LMI.
Router# debug frame-relay LMI command that you would use to monitor LMI information
Frame Relay Troubleshooting Commands
If a Frame-Relay DLCI attains a state other than “active” meaning inactive or deleted, you can check the Frame-Relay configuration to make sure its configuration matches the configuration of the router acting as the Frame-Relay DTE device.
Router# show frame-relay pvc – can be used to verify that the Frame-Relay PVCs are active and operational
Router# show frame-relay route – can be used to get a listing of the status of all the PVC’s
Router# show frame-relay map – can be used to verify that inverse ARP has successfully mapped remote network layer addresses to the appropriate DLCI.