nanog mailing list archives

Re: multi-homing fixed


From: Iljitsch van Beijnum <iljitsch () muada com>
Date: Wed, 29 Aug 2001 20:32:07 +0200 (CEST)


On Wed, 29 Aug 2001, Randy Bush wrote:

how many providers have multiple POP's in a city that are _completely
redundant_?  That is, they can operate _fully_ with one POP out of
service?

none can operate *fully*, as a customer access line pretty much has to
terminate in a single router which can, and eventually will, fail.

but, most large providers have more than one pop in the largest cities,
bay area, nyc, dee cee, etc.  and those pops are redundantly and diversely
wired.  if not, don't buy from them.  life can be simple.

So we don't want to force networks in the default-free zone to buy bigger
routers with more memory, but it's ok to force them to essentially build a
second network by having redundant pops in every city?

I'm sure the router vendors and colo builders would love this idea, but I
don't think throwing hardware at the problem will help in the long run.

Iljitsch van Beijnum


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