HVPLS with MPLS in the Access Layer

Look at Figure 11-9 to see H-VPLS with MPLS in the access layer. Figure 11-9 H-VPLS with MPLS in the Access Layer

U-PE

Pseudowires

U-PE

MPLS

N-PE

MPLS

VPLS

Pseudowires m

N-PE

MPLS

U-PE

With MPLS in the access layer, point-to-point virtual circuits will exist between the N-PEs and U-PEs. You need to disable the default split-horizon behavior on the N-PEs because an N-PE must forward Layer 2 frames received on the pseudowires from another N-PE onto the pseudowires toward the U-PEs and vice versa. You can achieve this with the following command:

neighbor remote router id encapsulation mpls no-split-horizon

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