nanog mailing list archives

Re: Alternative to BGP-4 for multihoming?


From: "Peter A. van Oene" <vantech () sympatico ca>
Date: Wed, 15 Mar 2000 00:19:15 -0500


a DNS oriented approach can be feasible in many situations.

yup.  unfortunately the hack is not a good net citizen (some folk don't
appreciate packets thrown at their servers), and some versions are not
very accurate (as the server for foo.bar may be quite net.far from the
host foo.bar).

but then most bgp hacks, though better net citizens, are not brilliantly
accurate either.  the anycast hack really being the only one that scales
and performs at all well.


Help me our here.  Can we not agree that exponentially more websites will
require the ability to multihome to different AS's to achieve proper
redundancy / disaster recovery?

Instead of simply saying "if it ain't BGP its crap" like the above, or the
E Gavron's telling me that these customers should simple advertise their
little netblocks out of two or more AS's, can someone suggest some viable
solutions?

The hard reality is that there isn't enough AS space.  This is unbelievably
obvious. With that in mind, how do I multihome?  

I am currently engaged in a great number of projects that face this exact
challenge.  In liue of more stategic solutions or co-location into proper
facilities, I personally don't see a better mechanism than load
distribution techniques similar to the 3DNS.

  



-------
Peter Van Oene
Senior Systems Engineer
UNIS LUMIN Inc.
www.unislumin.com




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