Layer 2 Circuit Configuration Guidelines

To configure a Layer 2 circuit, include the l2circuit statement:

l2circuit {

    local-switching {

        interface interface-name {

            description text;

            end-interface {

                interface interface-name;

                protect-interface interface-name;

            }

            protect-interface interface-name;

        }

    }

    neighbor address {

        interface interface-name {

            community community-name;

            (control-word | no-control-word);

            description text;

            mtu mtu-number;

            protect-interface interface-name;

            psn-tunnel-endpoint address;

            virtual-circuit-id identifier;

        }

    }

    traceoptions {

        file filename <replace> <size size> <files number> <nostamp>;

        flag flag <flag-modifier> <disable>;

    }

}

You can include the l2circuit statement at the following hierarchy levels:

• [edit protocols]
• [edit logical-routers logical-router-name protocols]

This chapter describes how to configure Layer 2 circuits, discussing the following topics:

• Configuring Interfaces for Layer 2 Circuits
• Configuring Local Interface Switching
• Configuring LDP for Layer 2 Circuits
• Configuring Layer 2 Circuit Policies
• Configuring ATM Trunking on Layer 2 Circuits
• Configuring Bandwidth Allocation and Call Admission Control
• Tracing Layer 2 Circuit Creation and Changes