Defining the Encapsulation for Layer 2 TCC Switching
To begin implementation of Layer 2 TCC switching, configure TCC encapsulation on the desired interfaces of the router that is acting as the switch (Router B in Unresolved topic-ref: "35070" ).
You cannot configure standard protocol families on TCC or CCC interfaces. Only the CCC family is allowed on CCC-encapsulated interfaces. Likewise, only the TCC family is allowed on TCC-encapsulated interfaces.
For ATM connections, specify the encapsulation type when configuring ATM virtual circuits (VCs) at the [edit interfaces interface-name unit unit-number] hierarchy level. For each VC, you configure whether it is a circuit or a regular logical interface. The default interface type is point-to-point.
For Cisco HDLC and PPP circuits, specify the encapsulation in the encapsulation statement at the [edit interfaces interface-name] hierarchy level. This statement configures the entire physical device. Also, you must configure the logical interface unit 0.
You can specify the encapsulation for Frame Relay circuits at the [edit interfaces interface-name] hierarchy level and the [edit interfaces interface-name unit unit-number] hierarchy level. For TCC and CCC interfaces, the DLCI value must be configured in the range of 512 through 1022. The default interface type is point-to-point.