nanog mailing list archives

Re: oh k can you see


From: "Stephen J. Wilcox" <steve () telecomplete co uk>
Date: Tue, 1 Nov 2005 19:19:14 +0000 (GMT)


On Tue, 1 Nov 2005, Randy Bush wrote:

my naive view of your current deployment means that k can not
be seen from any multi-homed sites unless one or more of their
upstreams (recurse for tier-n) is even more clever and
implements "t0 is our customer and we ignore NO_EXPORT toward
customers," thus piling on yet another bit of cleverness, the
implications of which we can discover in the next level of
purgatory.

assuming we are talking about the well known community no-export, then i 
understand the problem.

a better solution would be to peer only the anycast node, such that transit
providers continue to propagate to the global internet (minus the peers seeing
the shorter path).

for wider distribution within the region, possibly using a transit provider for
the anycast and use communities supported by the upstream to restrict 
announcement to its peers or upstreams

or am i naive too?

Steve


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