ADTRAN 5000 Series - Manual (Page 1102)

Command Reference Guide BGP Neighbor Configuration Command Set
61200990L1-35E Copyright © 2005 ADTRAN 1102
In this network:
• Router A is in AS 100.
• Router B is in AS 300.
• Router A is an eBGP peer with Router B.
• Router A’s connection to Router B specifies a local-as of 200.
• Router B is configured to connect to Router A in AS 200.
Therefore:
• To Router B, all aspects of Router A appear as AS 200.
• Networks advertised from Router A to Router B will have the AS path 200 100 prepended to the AS path
attribute.
• Router A will add AS 200 to the AS path of networks learned from Router B.