AS you know Frame-Relay is a well-known WAN technology that generally used for backbone routers. To understand the basic configuration of Frame-Relay, there is a configuration below with three Cisco 3600 Series Router and one Frame-Relay Switch.
First of all, we will start with Frame-Relay Switch. On GNS3 create a Frame-Relay Switch and right click the Frame-Relay Switch. Configure the DLCI – port mapping like below:
1:101 10:202
1:102 11:203 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)

It is time to configure our routers. Starting with the R1 make the below configuration. Here, the Hub Router is R1.
R1 Configuration
Now, configure the R2 for Frame-Relay. Here you can get help from “show frame-relay pvc” command.
R2 Configuration
[sc name=”ContentRMessage”] 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