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Configuring MPLS LSP Tunnels Between the PE Routers

In this configuration example, Resource Reservation Protocol (RSVP) is used for Multiprotocol Label Switching (MPLS) signaling. Therefore, in addition to configuring RSVP, you must create an MPLS label-switched path (LSP) to tunnel the VPN traffic.

On Router A, enable RSVP and configure one end of the MPLS LSP tunnel to Router B. When configuring the MPLS LSP, include all interfaces using the interface all statement.



[edit]
protocols {


rsvp {
interface all;
}




mpls {


label-switched-path RouterA-to-RouterB {
to 192.168.37.5;
primary Path-to-RouterB;
}




label-switched-path RouterA-to-RouterC {
to 192.168.37.10;
primary Path-to-RouterC;
}


interface all;
}


}

On Router B, enable RSVP and configure the other end of the MPLS LSP tunnel. Again, configure the interfaces by using the interface all statement.



[edit]
protocols {


rsvp {
interface all;
}




mpls {


label-switched-path RouterB-to-RouterA {
to 192.168.37.1;
primary Path-to-RouterA;
}




label-switched-path RouterB-to-RouterC {
to 192.168.37.10;
primary Path-to-RouterC;
}


interface all;
}


}

On Router C, enable RSVP and configure the other end of the MPLS LSP tunnel. Again, configure all interfaces using the interface all statement.



[edit]
protocols {


rsvp {
interface all;
}




mpls {


label-switched-path RouterC-to-RouterA {
to 192.168.37.1;
primary Path-to-RouterA;
}




label-switched-path RouterC-to-RouterB {
to 192.168.37.5;
primary Path-to-RouterB;
}


interface all;
}


}

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