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Basic Multipoint Frame Relay


Here, in multipoint Frame-Relay configuration, we will use the same Cisco 3600 series routers and a frame relay switch. But here, our configuration will not be point-to-point only. Routers will be connecting to the routers as multipoint.

We will start with Frame-Relay Switch again.Create a Frame-Relay Switch and right click the Frame-Relay Switch. Adjuct the DLCI – port mapping like below:

1:102 10:201
1:103 11:301
1:104 12:401

After mapping, connect the routers to the Frame-Relay Switch port mentioned in the mapping via serial connection. ( R1 to port 1, R2 to port 10, R3 to port 11, R4 to port 12)

It is time to configure our routers. The Hub Router is R1 again. Make the below configurations on all routers.

R1 Configuration

R1(config)# no logging console
R1 (config)# int s 0/0
R1 (config-if)# no shut
R1 (config-if)# encapsulation frame-relay
R1 (config-if)# ip address
R1 (config-if)# frame-relay map ip 102 broadcast
R1 (config-if)# frame-relay map ip 103 broadcast
R1 (config-if)# frame-relay map ip 104 broadcast
R1 (config-if)# end
R1 # write

R2 Configuration

R2 (config)# no logging console
R2 (config)# int s 0/0
R2 (config-if)# no shut
R2 (config-if)# encapsulation frame-relay
R2 (config-if)# ip address
R2 (config-if)# frame-relay map ip 201 broadcast
R2 (config-if)# frame-relay map ip 201 broadcast
R2 (config-if)# frame-relay map ip 201 broadcast
R2 (config-if)# end
R2 # write

R3 Configuration

R3 (config)# no logging console
R3 (config)# int s 0/0
R3 (config-if)# no shut
R3 (config-if)# encapsulation frame-relay
R3 (config-if)# ip address
R3 (config-if)# frame-relay map ip 301 broadcast
R3 (config-if)# frame-relay map ip 301 broadcast
R3 (config-if)# frame-relay map ip 301 broadcast
R3 (config-if)# end
R3 # write

R4 Configuration

R4 (config)# no logging console
R4 (config)# int s 0/0
R4 (config-if)# no shut
R4 (config-if)# encapsulation frame-relay
R4 (config-if)# ip address
R4 (config-if)# frame-relay map ip 401 broadcast
R4 (config-if)# frame-relay map ip 401 broadcast
R4 (config-if)# frame-relay map ip 401 broadcast
R4 (config-if)# end
R4 # write

After all the configurations done, you can check the connection between routers with the below ping commands. And you also check the frame-relay pvc on routers.

R1 # show frame-relay pvc
R1 # ping
R1 # ping
R1 # ping

R2 # show frame-relay pvc
R2 # ping
R2 # ping
R2 # ping

R3 # show frame-relay pvc
R3 # ping
R3 # ping
R3 # ping

R4 # show frame-relay pvc
R4 # ping
R4 # ping
R4 # ping

Download GNS3 Basic Multipoint Frame Relay Configuration Lab.

You can reach the other Frame-Relay articles below:

Basic Frame-Relay Configuration with both Inverse-ARP and Frame-Relay Map Command
Basic Point-to-Point Frame-Relay Configuration
Basic Multipoint Frame-Relay Configuration

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About the Author
Gokhan Kosem is a telecommunation and network engineer. His ambition to IP networks and end-to-end system installation made him to prepare this web-site. By sharing his experiences about various networking protocols beside different system installation experiences and Cisco, Juniper, Alcatel-Lucent devices configurations, he is aimed to be helpful for his collegues in all over the world. He is currently lives in Istanbul, Turkey.

4 comments for “Basic Multipoint Frame Relay Configuration”


ok i finally found a config that is done the way i did mine but i did it withi three routers and a cisco switch using static maping , the problem is when i add loopbacks on routers and used eigrp no routes are shown in the routing table and i cnt ping loopbacks ,i have seen many examples where they do it with subinterfaces but y cnt we do it withoug subinerfaces , hope if sm1 cn help

March 18th, 2012 at 13:44

this configuration help me shortout my Trouble shooting

May 21st, 2012 at 22:50

Hi Verma..this is a very good news for me:) There will be more benefitial articles, keep on ;)

May 23rd, 2012 at 20:29

I hope it will be helpful for me,
thanks bro.

October 28th, 2015 at 19:00

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