3com 3031 Instruccion De Instalación

C

HAPTER

 42: BGP C

ONFIGURATION

In the following figure, the AS 100 is divided into 3 sub-ASs, namely 1001, 1002 
and 1003. Configure EBGP, confederation EBGP and IBGP. 

Figure 138   Networking diagram of configuring AS confederation

1 Configure Router A:

[Router A]bgp 1001

[Router A-bgp]confederation id 100

[Router A-bgp]confederation peer-as 1002 1003

[Router A-bgp]group confed1002 external

[Router A-bgp]peer confed1002 as-number 1002

[Router A-bgp]group confed1003 external

[Router A-bgp]peer confed1003 as-number 1003

[Router A-bgp]peer 172.68.10.2 group confed1002 

[Router A-bgp]peer 172.68.10.3 group confed1003 

2 Configure Router B:

[Router B]bgp 1002

[Router B-bgp]confederation id 100

[Router B-bgp]confederation peer-as 1001 1003

[Router B-bgp]group confed1001 external

[Router B-bgp]peer confed1001 as-number 1001

[Router B-bgp]group confed1003 external

[Router B-bgp]peer confed1003 as-number 1003

[Router B-bgp]peer 172.68.10.1 group confed1001

[Router B-bgp]peer 172.68.10.3 group confed1003

3 Configure Router C:

AS200

AS100

AS1002

AS1001

AS1003

Ethernet

172.68.10.1

172.68.10.2

172.68.10.3

172.68.1.2

172.68.1.1

156.10.1.1

156.10.1.2

RouterA

RouterB

RouterC

RouterD

RouterE

AS100