Pre-configuration Tasks
Before configuring the IPv6 VPN-Option A, complete the following tasks:
l Configuring IGP for MPLS backbone networks in each AS to realize IP connectivity of the
backbones in one AS
l Enabling MPLS on the PEs and the ASBRs
l Setting up the tunnel (LSP or MPLS TE) between the PE and the ASBR in the same AS
l Enabling IPv6 on PEs, CEs and on the interfaces that need to be configured with IPv6
l Configuring the IPv6 address of the CE interface through which the CE accesses the PE
Data Preparation
To configure inter-AS IPv6 VPN-Option A, you need the following data.
No. Data
1 To configure the IPv6 VPN instance on the PE and the ASBR, you need the following
data:
l Name of the IPv6 VPN instance
l (Optional) Description of the IPv6 VPN instance
l RD, VPN Target
l (Optional) Routing policy that controls the receiving and sending of IPv6 VPN
routes
l (Optional) Tunnel policy
l (Optional) The maximum number of routes allowed by the IPv6 VPN instance
2
IPv6 addresses of the PE interfaces attached to the CE
3 AS number of the PE
4 IPv6 addresses of the interfaces connected the ASBRs
5 Routing protocol adopted between the PE and the CE: static route, RIPng, IS-ISv6,
or BGP4+
6 IPv4 addresses and interfaces between the PE and ASBR to establish the MP-IBGP
peers
4.7.2 Configuring Inter-AS IPv6 VPN Option A
This part describes how to configure an IPv6 VPN instance on the PE and ASBR to be
respectively associated with the CE and the peer ASBR.
Context
Inter-AS IPv6 VPN-Option A is easy to deploy. When the amount of the IPv6 VPNs and the
VPN-IPv6 routes on the PE is small, the Option A can be adopted.
The configurations of the inter-AS VPN-Option A are as follows:
Quidway S7700 Smart Routing Switch
Configuration Guide - VPN 4 BGP MPLS IPv6 VPN Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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