[c-nsp] ISP Dual AS

[William Jackson]

Maybe a historic reason, merger that has not been fully integrated?
Maybe not worth the hassle/interruption of doing the migration to a single AS.
Separate realms of control/policy?

William Jackson
NGN Engineering

Gibtelecom 
Email: william.jackson at gibtele.com 


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of mert ozkul
Sent: 06 December 2012 12:55
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] ISP Dual AS

Hi All,
I have query about ISP Design.
Why some ISP`s (Ex: BT) using dual AS`es on their network?  
What are the advantages of using more than one AS in the ISP network?What can be achieved if you use more than one AS?
Thanks,Best Regards,
-Mert 		 	   		  
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