[3443] in North American Network Operators' Group

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Re: Ping flooding

daemon@ATHENA.MIT.EDU (Jerry Anderson)
Fri Jul 12 11:49:04 1996

From: Jerry Anderson <jerry@gi.net>
To: nanog@merit.edu (North American Network Operators Group)
Date: Fri, 12 Jul 1996 10:43:34 -0500 (CDT)
In-Reply-To: <199607120258.TAA23467@lint.cisco.com> from "Paul Ferguson" at Jul 11, 96 10:57:11 pm

Jerry Anderson (jerry@gi.net) writes:
>>>> 3.  Better TCP windowing and better performance when all
>>>>     packets follow the same path.

When I wrote that I was thinking of multiple paths, rather than
asymmetric paths.  Compare the TCP performance of packet-based
load balancing to session-based load-balancing.

Vadim Antonov (avg@ncube.com) writes:
>>> 2) Don't Do Any Dynamic Routing Where Only One Path Exists.

Alan Hannan (alan@gi.net) writes:
>> Certainly I would not agree with this rule.

Nor would I.  It might make sense in a flat topology, but ours is
more hierarchical.  I find network management easier when we push
the details of tail-circuit connections out to the access
router.  The less complications in hub and core routers, the
better.

Paul Ferguson (pferguso@cisco.com) writes:
> 'Tis better to black-hole packets than to flap.

In core (EGP) routing, absolutely.  However, I haven't noticed
any ill effects of flapping in our internal network.

--
Jerry Anderson                                       jerry@gi.net
Principal Engineer                                 (402) 436-3030
Implementation & Consulting               http://www.gi.net/jerry
   Global Internet Network Services (formerly known as MIDnet)

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