Huawei Quidway NetEngine80E Configuration Manual page 845

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
Pre-configuration Tasks
Before configuring a BGP confederation, complete the following tasks:
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Procedure
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Issue 02 (2014-09-30)
Configuring link layer protocol parameters for interfaces to ensure that the link layer
protocol on the interfaces is Up
Configuring Basic BGP Functions
Configure a BGP confederation.
Perform the following steps on a BGP device:
1. Run:
system-view
The system view is displayed.
2. Run:
bgp { as-number-plain | as-number-dot }
The BGP view is displayed.
3. Run:
confederation id { as-number-plain | as-number-dot }
A confederation ID is set.
4. Run:
confederation peer-as { as-number-plain | as-number-dot } &<1-32>
The number of the sub-AS where other EBGP peers connected to the local AS reside
is set.
{ as-number-plain | as-number-dot } is valid in the confederation only when the sub-
ASs of the confederation are configured.
The confederation id and confederation peer-as commands must be run on all the
EBGP peers in the same confederation, and the same confederation ID must be set for
these EBGP peers.
NOTE
An old speaker that has a 2-byte AS number cannot be in the same confederation with a new
speaker that has a 4-byte AS number. Otherwise, a routing loop may occur. This is because the
AS4_Path attribute does not support confederations.
Configure confederation compatibility.
Other routers may implement the confederation that does not comply with the RFC
standard. In such a situation, confederation compatibility must be configured. Perform the
following steps on a BGP device:
1. Run:
system-view
The system view is displayed.
2. Run:
bgp { as-number-plain | as-number-dot }
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8 BGP Configuration
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