Zte ZXR10 GER - BGP Confederation

Chapter 16 BGP Configuration
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BGP Confederation
The function of route confederation is the same as that of a
router reflector. The route confederation is used to reduce the
number of BGP neighbor connections in an AS. In a route
federation, an AS is divided into multiple ASs, multiple IBGP
routers in the AS belong to different sub-ASs. IBGP is set up
inside each sub-AS, and EBGP is set up among sub-ASs. The
sub-AS ID is called confederation ID. Sub-ASs are invisible
external to the AS.
Refer to below procedure for BGP confederation configuration on
ZTE ZXR10 GER router.
 Router Command Line Interface has been accessed.
 BGP is running on a network.
1. For dividing autonomous system into sub-autonomous
system, use bgp confederation identifier <value>
command in BGP route mode as shown in
Table 298.
TABLE 298 BGP CONFEDERATION IDENTIFIER COMMAND
Result: This configures confederation ID.
In the following an example will be given to describe the
application of route confederation.
As shown in
Figure 103, AS200 has five BGP routers, which
is divided into two sub-ASs. One is defined as AS65010
(containing routers R3, R5 and R6), and the other is defined
as AS65020 (consisting of routers R4 and R7).
Introduction
Purpose
Prerequisites
Steps
Command
Format
Command
Mode
Command Function
bgp
confederation
identifier
<value>
Route
This configures
confederation ID