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Application Example Configuring BGP
page 4-60 OmniSwitch 6800/6850/9000 Advanced Routing Configuration Guide December 2007
Application Example
The following simple network using EBGP and IBGP will demonstrate some of the basic BGP setup
commands discussed previously:
In the above network, Speakers 1, 2, and 3 are part of AS 100 and are fully meshed. Speaker 4 is in AS
200 and Speaker 5 is in AS 300.
AS 100
BGP Speaker 1
Assign the speaker to AS 100:
-> ip bgp autonomous-system 100
Peer with the other speakers in AS 100 (for internal BGP, and to create a fully meshed BGP network):
-> ip bgp neighbor 20.0.0.2
-> ip bgp neighbor 20.0.0.2 remote-as 100
-> ip bgp neighbor 20.0.0.2 status enable
-> ip bgp neighbor 10.0.0.2
-> ip bgp neighbor 10.0.0.2 remote-as 100
-> ip bgp neighbor 10.0.0.2 status enable
Peer with the external speaker in AS 200 (for external BGP):
-> ip bgp neighbor 40.0.0.2
-> ip bgp neighbor 40.0.0.2 remote-as 200
-> ip bgp neighbor 40.0.0.2 status enable
BGP Speaker 3
20.0.0.2/24
30.0.0.2/24
AS 100
AS 200 AS 300
EBGP EBGP
IBGP
BGP Speaker 4
40.0.0.2/24
BGP Speaker 5
50.0.0.2/24
BGP Speaker 1
40.0.0.1/24
10.0.0.1/24
20.0.0.1/24
BGP Speaker 2
50.0.0.1/24
10.0.0.2/24
30.0.0.1/24