To create a frame relay (FR) switch we need at least a router with two serial interfaces and IOS release 11.0 or later. These two interfaces will connect to two routers and create an FR cloud between these two routers. The FR switch will act as DCE and the other two routers will act as DTE. Therefore, we will need DTE-to-DCE cable.
Configuring Cisco Router 2522 as Frame Relay Switch
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