Configuring Vpn Gr; Establishing The Configuration Task - Huawei quidway s7700 Configuration Manual

Quidway S7700 Smart Routing Switch
Configuration Guide - VPN
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Routing Table : zy
Summary Count : 1
Destination: 18.0.0.0/24
RelayNextHop: 171.16.19.16
BkPETunnelID: 0x1005c
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.
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:
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Data Preparation
To configure VPN GR, you need the following data.
Issue 01 (2011-07-15)
Protocol: BGP
Preference: 255
NextHop: 171.0.0.16
State: Active Adv Relied
Tag: 0
Label: 11264
IndirectID: 0x2f
TunnelID: 0x10050
BkNextHop: 171.0.0.17
BkLabel: 11264
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.
Establishing the VPN environment and configuring the VPN
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
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Process ID: 0
Cost: 0
Neighbour: 171.0.0.16
Age: 00h00m18s
Priority: low
QoSInfo: 0x0
Interface: Vlanif69
Flags: RD
BkInterface: Unknown
SecTunnelID: 0x1005e
BkPESecTunnelID: 0x0
3 BGP MPLS IP VPN Configuration
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