transit across the ixs

Randy Bush randy at
Wed Feb 17 13:42:06 UTC 1999

>> you might be amused to write a bit of code to see if your ix peers are
>> giving you next-hops of other provider(s).  it is clear that a number of
>> providers are selling transit across the ixs.  not at all cool.
> Note that CIX does this by default at PAIX and on PB-SMDS.  Not that those
> are major exchanges by Randy's likely definition.  The only time we force
> next-hop-self is if the peer deliberately asks the exchange operator for
> port filtering, or if we're otherwise explicitly requested by a BGP peer
> send routes with next-hop-self.

cool beans.  employment security for level-3s at the noc.  makes it really
fun to debug when packets come from places different where routes go.  good


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