Configuring Route Reflection For Bgp Vpnv6 Routes; Establishing The Configuration Task - Huawei quidway s7700 Configuration Manual

Quidway S7700 Smart Routing Switch
Configuration Guide - VPN
Procedure
l
l
l
l
----End
Example
Run the display bgp vpnv6 all routing-table command on the ASBR. If the IPv6 routes of the
VPN are displayed, it means the configuration succeeds.
Run the display bgp vpnv6 all peer command on the PE or the ASBR. You can find that the
status of the IBGP peer relationship between PEs and ASBRs in the same AS is Established,
and the status of the EBGP peer relationship between two directly connected ASBRs in different
ASs is Established.
Run the display ipv6 routing-table vpn6-instance [ vpn6-instance-name ] command on the
PE. If the relevant IPv6 VPN routes are displayed, it means the configuration succeeds.
Run the display mpls lsp command on the ASBR. If information about the LSP and label is
displayed, it means that the configuration succeeds. If the ASBR is enabled with the next-hop-
based label allocation, only one label is allocated for the IPv6 VPN routes with the same next
hop and outgoing label.

4.9 Configuring Route Reflection for BGP VPNv6 Routes

Deploying a BGP VPNv6 Route Reflector (RR) reduces the number of MP-IBGP connections.
This lightens the burden of PEs and facilitates network maintenance and management.

4.9.1 Establishing the Configuration Task

Before configuring a BGP VPNv6 RR to optimize the IPv6 VPN backbone layer, 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
The BGP speaker does not advertise the routes learned from IBGP devices to its IBGP peers.
To make a PE advertise the routes of the VPN that the PE accesses to the BGP VPNv6 peers in
the same AS, the PE must establish IBGP connections with all peers to directly exchange VPN
routing information. That is, MP IBGP peers must establish full connections between each other.
Suppose there are n PEs (including ASBRs) in an AS, n (n-1)/2 MP IBGP connections need to
be established. A large number of IBGP peers consume a great amount of network resources.
The Route Reflector (RR) can solve this problem. In an AS, one switch severs as the RR to
reflect IPv6 VPN routes and the other PEs and ASBRs serve as the clients, which are called
Issue 01 (2011-07-15)
Run the display bgp vpnv6 all routing-table command to check the VPN-IPv6 routing
table on the PE or the ASBR.
Run the display bgp vpnv6 all peer command to check information about all the BGP
peers on the PE or the ASBR.
Run the display ipv6 routing-table vpn6-instance [ vpn6-instance-name ] command to
check the VPN routing table on the PE.
Run the display mpls lsp command to check information about the LSP and label on the
ASBR.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4 BGP MPLS IPv6 VPN Configuration
360