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In preparation of your CCNA exam, we want to make sure we cover the various concepts that we could see on your Cisco CCNA exam. So to assist you, below we will discuss one of the more difficult CCNA concepts; Three Router Frame-Relay Lab. As you progress through your CCNA exam studies, I am sure with repetition you will find this topic becomes easier. So even though it may be a difficult concept and confusing at first, keep at it as no one said getting your Cisco certification would be easy!

3 ROUTER SETUP WITH FRAME RELAY

Hardware Requirement:

• 1 Router with 2 Serials
• 2 Router with 1 Serial
• 2 DTE/DCE Serial Cables
• IOS Version 11.x or later

CONFIGURATION OF 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

TEST CONNECTIVITY OF FRAME RELAY ROUTER

FR#sho frame route

TESTING CONNECTIVITY 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 [1/0] via 192.168.1.2
R1#

TESTING CONNECTIVITY 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

Router# 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
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.

End of Lab

I hope you found this article to be of use and it helps you prepare for your Cisco CCNA certification. Achieving your CCNA certification is much more than just memorizing Cisco exam material. It is having the real world knowledge to configure your Cisco equipment and be able to methodically troubleshoot Cisco issues. So I encourage you to continue in your studies for your CCNA exam certification.