verio arrogance

Sat Jul 27 13:14:35 UTC 2002

> You aren't the biggest offender, but how should anyone draw an arbitrary
> line for "you are polluting too much" and "you are polluting, but to a
> reasonable extent".

The most reasonable and quantitative means I can see is technical; if
there is no network engineering benefit to announcing more specifics it
should not be done.  There's lots of swamp space where you'll see 2
contiguous /24's announced with the same AS path, metrics, etc.  Those are
the prefixes you should be pushing to get aggregated, not mine.

> You could do a deaggregate+no-export method as well, even with your two
> different transit providers.  You would just need to run ebgp-multihop
> to each of them from the opposite network, and announce your
> more-specifics there.  Not a perfectly clean method, but at least it
> keeps your pollution local.

Then there is no ability for remote networks to choose the best path to my
Toronto vs Ottawa networks (since the different transit providers would
announce only the /20).  Instead of using more router CPU/mem, this uses
more network bandwidth than necessary (statistically speaking traffic has
a 50% chance of going to the "wrong" transit provider).  As well, for the
ebgp-multihop to work wouldn't that require some extra static routes to be
setup by my transit providers?

-Ralph