Option: Selecting an MTU for a Layer 2 Circuit

To configure the MTU for each individual Layer 2 circuit, include the mtu statement at the [edit protocols l2circuit neighbor ip-address interface interface-name] hierarchy level. If the MTU setting between Layer 2 circuit neighbors does not match, the Layer 2 circuit is torn down.

Note: If you configure an MTU value for an ATM cell relay interface on an ATM2 PIC and simultaneously configure an MTU value for a Layer 2 circuit that uses the same ATM2 PIC, the MTU value for the Layer 2 circuit takes precedence when calculating the cell bundle size and is advertised to Layer 2 circuit neighbors.