How To Configure Frame Relay in GNS3 – Step By Step

Consider a scenario where XYZ WAN Solutions has a central office that uses a high-end Cisco router to connect branch office routers using the point-to-point frame relay circuits. The organization wants that each branch office’s router should treat the circuit as a point-to-point circuit. However, all the branch office routers should also be able to communicate to other branch offices’ routers through the router placed in the central office. You have been hired to provide the solution for the same. You decide to configure frame relay using the Hub and Spoke topology. Before implementing frame relay configuration on the production network, first, you plan to configure and test frame relay in GNS3.

If you want to configure frame relay on Cisco Packet Tracer, visit the following link.

Configure Frame Relay in Cisco Packet Tracer

Steps to Configure Frame Relay in GNs3

In this post, we will explain how to configure Frame relay in Gns3. However, we will not cover the concept of frame relay in this post. We assume that you have already familiar with the frame relay features and components. We will use the following GNS3 topology to configure Frame Relay.

Creating Frame Relay Topology in GNS3

Add three routers and a Frame Relay Switch in the GNS3 console and connect them as per the preceding topology. Now, open the Frame Relay Switch properties and specify the source and destination ports and DLCI numbers. Please refer the following figure to set the desired ports and DLCI numbers on the node properties.

Configure Frame Relay in GNS3

Once you have specified the ports and DLCI numbers for all the routers, let’s begin the frame relay configuration in GNS3.

Step by Step Frame Relay Configuration in GNS3

To configure Fame Relay in GNS3, you need to perform the following steps:

  1. On R1, execute the following commands.
    R1#config t 
    R1(config)#interface se0/0
    R1(config-if)#ip add
    R1(config-if)#encapsulation frame-relay
    R1(config-if)#frame-relay map ip 105 broadcast
    R1(config-if)#frame-relay map ip 106 broadcast
    R1(config-if)#no shutdown
  2. The following figure shows the frame relay configuration of R1.Frmae Relay Configuration in GNS3
  3. On R2, execute the following commands.
    R2#config t 
    R2(config)#interface se0/0 
    R2(config-if)#ip add 
    R2(config-if)#encapsulation frame-relay 
    R2(config-if)#frame-relay map ip 501 broadcast 
    R2(config-if)#frame-relay map ip 501 broadcast 
    R2(config-if)#no shutdown 
  4. The following figure shows the frame relay configuration on R2.Configure Hub and Spoke Faame Relay in GNS3
  5. On R3, execute the following commands.
R3#config t
R3(config)#interface se0/0
R3(config-if)#ip add
R3(config-if)#encapsulation frame-relay
R3(config-if)#frame-relay map ip 601 broadcast
R3(config-if)#frame-relay map ip 601 broadcast
R3(config-if)#no shutdown

Verifying Frame Relay Configuration

To verify your frame relay configuration, execute the following command on R3 and examine the output.

R1#show frame-relay

Verify Frame Relay Configuration in GNS3

In the preceding figure, you can see that the frame relay encapsulation is configured. Notice the frame relay MAP, status, and DLCI numbers.

In this post, we have explained how to configure frame relay in GNS3. Hope, you enjoyed it. Please do share and subscribe us.

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