Worldly Thoughts - Regionalizing Peering

Alec H. Peterson chuckie at
Tue May 14 00:13:04 UTC 1996

Justin W. Newton writes:
>Another drawback to this model is that if you peer with people at one
>exchange and one exchange only you would only give them routes that are
>within the local region, and not all of your routes.  This may be a problem.
>It may not.  

It would be.  What happens if one of your connections to a peering
point goes down?  You can't fall back to go through another peering
point because they are not sending you the routes there.  The way to
do it is probably with either AS padding or BGP communities.  I've
never played with them, but Enke Chen from MCI wrote a draft on the
subject which he spoke about at the last NANOG.


|Alec Peterson - chuckie at   | Panix Public Access Internet and UNIX|
|Network Administrator               | New York City, NY                    |

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