Configuring Inter-As Martini Vpls; Establishing The Configuration Task; Configuring Inter-As Martini Vpls Option A - Huawei quidway s7700 Configuration Manual

Quidway S7700 Smart Routing Switch
Configuration Guide - VPN
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7.8 Configuring Inter-AS Martini VPLS

When deploying VPLS in a larger scope, PEs or CEs may belong to different ASs. In such a
situation, you cannot directly establish PWs between PEs based on LDP. To address the problem,
you can configure inter-AS LDP VPLS.

7.8.1 Establishing the Configuration Task

Before configuring the inter-AS Martini VPLS, familiarize yourself with the applicable
environment, complete the pre-configuration tasks, and obtain the required data. This can help
you complete the configuration task quickly and accurately.
Applicable Environment
If the MPLS backbone network bearing the Martini VPLS spans multiple ASs, you must
configure the inter-AS Martini VPLS.
S7700 supports Inter-AS Option A. This solution can be easily implemented. When the number
of inter-AS Martini VPLS routes on ASBRs is small, Option A is recommended.
Pre-configuration Tasks
Before configuring inter-AS Martini VPLS, complete the following tasks:
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Data Preparation
To configure the inter-AS Martini L2VPN, you need the following data.
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7.8.2 Configuring Inter-AS Martini VPLS Option A

In inter-AS Martini VPLS OptionA, each ASBR must reserve a sub-interface for each inter-AS
VC. If the number of inter-AS VCs is small, this solution can be used. Compared with L3VPN,
this inter-AS L2VPN solution consumes more resources and requires heavier configuration
workload, which is not recommended.
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Configuring static routes or the IGP protocol on the PE or P devices in the MPLS backbone
network of ASs to implement the IP connectivity of the backbone network devices in the
same AS
Configuring the basic MPLS capability on the MPLS backbone network of each AS
Configuring MPLS LDP and establishing LDP LSP for the MPLS backbone of each AS
Data
Mode of the inter-AS VPN
Number of each AS
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