Enabling Bgp Gr - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
The following roles are involved in BGP GR:
l
l
Pre-configuration Tasks
Before configuring BGP GR, complete the following task:
l
Data Preparation
To configure BGP GR, you need the following data.
No.
1
2
3

8.22.2 Enabling BGP GR

Enabling or disabling BGP GR may delete and re-establish all BGP sessions and instances.
Context
A GR-capable device can establish GR sessions with a GR-capable neighbor. By controlling the
session negotiation mechanism of BGP, the GR restarter and the GR helper can understand each
other's GR capability. When detecting the restart of the GR restarter, the GR helper does not
delete the routing and forwarding entries related to the GR restarter, but waits to re-establish a
BGP connection with the GR restarter. After establishing a new BGP connection, the GR
restarter and the GR helper update BGP routes.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
bgp { as-number-plain | as-number-dot }
The BGP view is displayed.
Step 3 Run:
graceful-restart
Issue 02 (2014-09-30)
GR restarter: is a device that is restarted by the administrator or in the case of a failure. The
GR restarter must be a GR-capable device.
GR helper: is a neighbor of the GR restarter. The GR helper must also have the GR
capability.
Configuring Basic BGP Functions
Data
BGP AS number
Maximum period of time for reestablishing a BGP session
Period of time for waiting for End-Of-RIB messages
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