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    Example: Base Configuration for a P Router

    P routers in your MPLS network must have the following entities configured before these devices are prestaged:

    • A Gigabit Ethernet interface to each router in the network
    • Loopback interface
    • MPLS protocol
    • OSPF protocol
    • LDP protocol

    Figure 1 shows a simple network with one P router connecting five N-PE routers.

    Figure 1: Connectivity in a Simple Network

    Connectivity in a Simple
Network

    The following example shows a P router configuration for the simple network shown in Figure 1.

    interfaces {
            ge-0/0/2 {
            unit 0 {
                family inet {
                    address 10.1.14.1/30;
                }
                family mpls;
            }
        }
        ge-0/0/3 {
            unit 0 {
                family inet {
                    address 10.1.15.2/30;
                }
                family mpls;
            }
        }
        ge-5/0/0 {
            unit 0 {
                family inet {
                    address 10.1.17.1/30;
                }
                family mpls;
            }
        }
        ge-5/0/1 {
            unit 0 {
                family inet {
                    address 10.1.18.1/30;
                }
                family mpls;
            }
        }
        lo0 {
            unit 0 {
                family inet {
                    address 192.168.1.1/32;
                }
            }
        }
    }
    
    }
    protocols {
        mpls {
            interface ge-0/0/2.0;
            interface ge-0/0/3.0;
            interface ge-5/0/0.0;
            interface ge-5/0/1.0;
            interface lo0.0;
        }
        ospf {
            traffic-engineering;
            area 0.0.0.0 {
                interface ge-0/0/2.0;
                interface ge-0/0/3.0;
                interface ge-5/0/0.0;
                interface ge-5/0/1.0;
                interface lo0.0 {
                    passive;
                }
            }
        }               
        ldp {
            interface ge-0/0/2.0;
            interface ge-0/0/3.0;
            interface ge-5/0/0.0;
            interface ge-5/0/1.0;
        }
    }

    Modified: 2017-02-02