BGP Scenario Suggestion

Unanswered Question
Sep 15th, 2008
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Hello BGP gurus,


Will you please review the below and suggest on the solution..


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Location A:


Small Size Data Center with ISP-A(primary) & ISP-B (secondary).


EBGP Peering with both ISPs with customer own public AS# (11111) from ARIN & /24 public IP assigned from ISPB.



Location B :

(connected to Location A with Gig P2P fiber): Also has its own single Internet connection (50meg)


This is Main data center. Customer wants to shut down the Location A in near future, hence planning to build

Dual ISP /BGP configs at Location B. Customer got his own IP (/20) range from ARIN too.


From /20 : one of the /24 subnet being used at UK office with its own AS# (22222).


Now for Location B, customer wants to use another /24 from his own IP range.


As ARIN will not assign another AS# for Location B, we have to use AS# 11111 only to advertise customer own network to new ISPs via BGP.


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Any specific precautions need to be taken inorder to do this..? Or using Same AS# from both Locations (interconencted) advertising different networks will not play any role here..?


Please suggest


Thank you in advance

MS


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