Riverstone Networks WICT1-12 - Manual (Page 274)

16-16 Riverstone Networks RS Switch Router User Guide Release 8.0
BGP Configuration Examples BGP Configuration Guide
The
gated.conf
file for router R1 is as follows:
The CLI configuration for router R2 is as follows:
The
gated.conf
file for router R2 is as follows:
16.3.2 IBGP Configuration Example
Connections between BGP speakers within the same AS are referred to as internal links. A peer in the same AS is an
internal peer. Internal BGP is commonly abbreviated IBGP; external BGP is EBGP.
An AS that has two or more EBGP peers is referred to as a multihomed AS. A multihomed AS can “transit” traffic
between two ASs by advertising to one AS routes that it learned from the other AS. To successfully provide transit
services, all EBGP speakers in the transit AS must have a consistent view of all of the routes reachable through their
AS.
autonomoussystem 1 ;
routerid 10.0.0.1 ;
bgp yes {
group type external peeras 2
{
peer 10.0.0.2
;
};
};
interface create ip et.1.1 address-netmask 10.0.0.2/16 port et.1.1
ip-router global set autonomous-system 2
ip-router global set router-id 10.0.0.2
bgp create peer-group pg2w1 type external autonomous-system 1
bgp add peer-host 10.0.0.1 group pg2w1
bgp start
autonomoussystem 2 ;
routerid 10.0.0.2 ;
bgp yes {
group type external peeras 1
{
peer 10.0.0.1
;
};
};