Configure Logical Router Interface Properties

With JUNOS software, you can partition a single physical router into multiple logical devices that perform independent routing tasks. Because logical routers perform a subset of the tasks once handled by the physical router, logical routers offer an effective way to maximize the use of a single router platform.

You can configure the following logical router statements:

[edit logical-routers logical-router-name]

interfaces interface-name {

    unit logical-unit-number {

        logical-interface-statements;

    }

}

policy-options {

    policy-options-statements;

}

protocols {

    protocols-statements;

}

routing-instances {

    routing-instances-statements;

}

routing-options {

    routing-options-statements;

}

For an overview of logical routers, see the JUNOS Internet Software Feature Guide. For detailed information about logical router configuration, see the JUNOS Internet Software Configuration Guide: Routing and Routing Protocols. For information about configuring peer relationships between logical routers, see Configure a Logical Tunnel.

To configure interface properties of a logical router, you must include the following statements at the [edit logical-routers logical-router-name] hierarchy level:

[edit logical-routers logical-router-name]

interfaces interface-name {

    unit logical-unit-number {

        logical-interface-statements;

    }

}

Example: Configure Logical Router Interface Properties

Configure a logical router's interface properties:

[edit interfaces t3-0/0/1]

description "Physical interface to be partitioned into multiple logical routers";

[edit logical-routers 1-on-t3-0/0/1]

interfaces t3-0/0/1 {

    unit 1 {

        family inet {

            address 10.0.0.1/32 {

                destination 10.0.0.2;

            }

        }

    }

}