R21xx-HP FlexFabric 11900 MPLS Configuration Guide

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Figure 63 Intra-domain multi-segment PW
Inter-domain multi-segment PW
An inter-domain multi-segment PW includes concatenated PWs in different ASs. It is a method for
inter-AS option B networking.
As shown in Figure 64, y
ou can create an inter-domain multi-segment PW between PE 1 and PE 2 in
different ASs by concatenating PW 1 and PW 2 on ASBR 1 and concatenating PW 2 and PW 3 on
ASBR 2.
Figure 64 Inter-domain multi-segment PW
MPLS L2VPN configuration task list
To establish an MPLS L2VPN, you must complete the following tasks:
• Configure an IGP to achieve IP connectivity within the backbone.
• Configure basic MPLS or LDP to set up public tunnels across the backbone.
• Configure MPLS L2VPN on the PEs, including setting up PWs, and binding ACs to PWs.
This chapter only describes MPLS L2VPN configurations on the PEs.
MPLS L2VPN configurations vary with the following scenarios:
CE 1
PE 4
PE 1 PE 2
CE 2
MPLS or IP backbone
PE 3
Tunnel
Tunnel
PW 1
PW 2
PW