On 27/07/2015 12:53, Nick Hilliard wrote: > On 27/07/2015 12:55, Saeed Khademi wrote: >> As far as I know, having an AS number is necessary for BGP routing. >> Now my question is that, if a customer doesn't have multiple links ( at >> least 2 ) >> what is the use of having an AS number? > > they may want to become multihomed in the future.
oops, hit <send> too quickly. They may also be providing l3vpn services, or providing BGP-to-customers for connectivity requirements. There are plenty of reasons to use an ASN which don't have anything to do with IP transit. Nick
