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Re: Enterprise Multihoming

  • From: Marshall Eubanks
  • Date: Thu Mar 11 13:11:42 2004

There is another thing - if you are multi-homed, and want to switch providers, it is pretty seamless and painless - no renumbering, no
loss of connection, etc., as you always have a redundant path.

On Thursday, March 11, 2004, at 12:34 PM, Pekka Savola wrote:

<On Thu, 11 Mar 2004, Gregory Taylor wrote:
Mutli-homing a non-ISP network or system on multiple carriers is a good
way to maintain independent links to the internet by means of different
peering, uplinks, over-all routing and reliability. My network on NAIS
is currently multi-homed through AT&T. I use a single provider as both
of my redundant links via 100% Fiber network. Even though this is
cheaper for me, all it takes is for AT&T to have some major outage and I
will be screwed. If I have a backup fiber line from say, Global
Crossing, then it doesn't matter if AT&T takes a nose dive, I still have
my redundancy there.
Well, I think this, in many cases, boils down to being able to pick
the right provider.

I mean, some providers go belly-up from time to time.  Others are
designed/run better.

For a major provider, complete outage of all of its customers is such
a big thing they'll want to avoid it always.  If it happens, for a
brief moment, once in five years (for example), for most companies
that's an acceptable level of risk.

Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings

                                 Marshall Eubanks

T.M. Eubanks
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