------------------------------------------------------------------------------
Routing Table : zy
Summary Count : 1
Destination: 18.0.0.0/24
Protocol: BGP Process ID: 0
Preference: 255 Cost: 0
NextHop: 171.0.0.16 Neighbour: 171.0.0.16
State: Active Adv Relied Age: 00h00m18s
Tag: 0 Priority: low
Label: 11264 QoSInfo: 0x0
IndirectID: 0x2f
RelayNextHop: 171.16.19.16 Interface: Vlanif69
TunnelID: 0x10050 Flags: RD
BkNextHop: 171.0.0.17 BkInterface: Unknown
BkLabel: 11264 SecTunnelID: 0x1005e
BkPETunnelID: 0x1005c BkPESecTunnelID: 0x0
BkIndirectID: 0x2c
3.13 Configuring VPN GR
In the process of master/slave control board switchover or the system upgrade, you can configure
VPN GR to ensure that VPN traffic is not interrupted on the PE, CE, or P.
3.13.1 Establishing the Configuration Task
Before configuring VPN GR, familiarize yourself with the applicable environment, complete
the pre-configuration tasks, and obtain the data required for the configuration. This will help
you complete the configuration task quickly and accurately.
Applicable Environment
The VPN GR is enabled for the BGP/MPLS IP VPN that needs the GR capability. Configuring
VPN GR on the switch that undertakes the VPN service can ensure that switch keeps forwarding
when the switch performs the AMB/SMB switchover and the VPN traffic is not broken.
NOTE
The GR capability cannot ensure that the traffic is not broken if the neighboring switch performs the AMB/
SMB switchover at the same time.
When configuring VPN GR, you must configure the IGP GR, BGP GR and MPLS LDP GR on
the PE, configure the IGP GR and the MPLS LDP GR on the P, and configure the IGP GR or
the BGP GR on the CE. If more than one domain is traversed, you must configure the IGP GR,
BGP GR and MPLS LDP GR on the ASBR.
Pre-configuration Tasks
Before configuring VPN GR, complete the following tasks:
l Establishing the VPN environment and configuring the VPN
l Configuring the common IGP GR (such as the IS-IS GR and the OSPF GR), BGP GR and
MPLS LDP GR on PEs and Ps in all related backbone networks to ensure that the backbone
network has the GR capability
Data Preparation
To configure VPN GR, you need the following data.
Quidway S7700 Smart Routing Switch
Configuration Guide - VPN 3 BGP MPLS IP VPN Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
151
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