Configuring Basic Bgp Functions - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing

8.3 Configuring Basic BGP Functions

Configuring basic BGP functions is the prerequisite to building a BGP network.
8.3.1 Before You Start
Basic BGP functions must be configured first when you build up a BGP network.
Applicable Environment
BGP can be configured on a network to implement communication among ASs. This section
describes how to configure basic BGP functions.
Because BGP uses TCP connections, you need to specify the IP address of the peer when
configuring BGP. The BGP peer may not be the neighboring router. The BGP peer relationship
can also be established by using logical links. Loopback interface addresses are usually used to
establish BGP connections to enhance the stability of these connections.
Configuring basic BGP functions includes the following steps:
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Pre-configuration Tasks
Before configuring basic BGP functions, complete the following task:
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Data Preparation
To configure basic BGP functions, you need the following data.
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Start BGP processes. This step is a prerequisite for configuring basic BGP functions.
Establish BGP peer relationships: Devices can exchange BGP routing information only
after they are configured as peers and establish peer relationships.
Import routes. BGP itself cannot discover routes. Instead, it imports routes discovered by
other protocols to implement communication between ASs.
NOTE
The commands in the BGP-IPv4 unicast address family view can be run in the BGP view. These commands
are described in the BGP-IPv4 unicast address family view in configuration files.
Configuring link layer protocol parameters and IP addresses for interfaces to ensure that
the link layer protocol on the interfaces is Up
Data
Local AS number and router ID
IPv4 address and AS number of a peer
Interface originating an Update message
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