
In this topology, I have two Alcatel-Lucent’s Service Router 7750 which is peering with internal BGP on local networks and both of them also peering with external BGP to the upstream router. In this case, an upstream router used for internet connection.
Assumption
UPSTREAM Router:
UPSTREAM Router AS Number: 54321
UPSTREAM Router IP Address for eBGP peering with SR1: 202.202.202.1/30
UPSTREAM Router IP Address for eBGP peering with SR1: 202.202.202.4/30
SR1-7750:
SR1-7750 AS Number: 12345
SR1-7750 IP Address for eBGP: 202.202.202.2/30
SR1-7750 IP Address for iBGP: 101.101.101.1/30
SR2-7750:
SR2-7750 AS Number: 12345
SR2-7750 IP Address for eBGP: 202.202.202.5/30
SR2-7750 IP Address for iBGP: 101.101.101.2/30
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