From: John Conzone (jkconzone@xxxxxxxx)
Date: Tue Jul 18 2000 - 20:28:09 GMT-3
Yes it does.
My question arose as I read Caslow's book where he states the opposite.
I am finding a few of these items in his book which don't seem to be
accurate.
I also have an issue with the statement that if one does a static map on
a physical interface and also is resolvng a dynamic mapping on that same
interface via IARP, the dynamic mapping will go away on reboot if the
dynamic mapping is referencing the DLCI and same protocol as the static. I
have a dynamic mapping to my hub, and add a static mapping to my remote
spoke referencing the same DLCI and protocol. The dynamic mapping returns
after a reboot of both ends, along with the static mapping.
This also goes against the text in Caslows book. I've done it a bunch of
times.I guess one has to really check all this stuff themselves to be sure.
----- Original Message -----
From: "Brian Stewart" <brian@andyandbrian.com>
To: "'John Conzone '" <jkconzone@home.com>; "'Brian Edwards '"
<bedwards@juniper.net>; "''Kent' '" <cciecn@yahoo.com>; "'Lawrence Dwyer '"
<dwyer@tatrc.org>
Cc: "'ccielab '" <ccielab@groupstudy.com>
Sent: Tuesday, July 18, 2000 6:37 PM
Subject: RE: Eigrp split horizon
>
> EIGRP split horizon is enabled on ALL interfaces. The default on IGRP and
> other protocols can vary based on the interface type.
>
> From the doc CD....
>
> Split horizon controls the sending of IP Enhanced IGRP update and query
> packets. When split horizon is enabled on an interface, these packets are
> not sent for destinations for which this interface is the next hop. This
> reduces the possibility of routing loops.
>
> By default, split horizon is enabled on all interfaces.
>
> Split horizon blocks route information from being advertised by a router
out
> of any interface from which that information originated. This behavior
> usually optimizes communications among multiple routing devices,
> particularly when links are broken. However, with nonbroadcast networks
> (such as Frame Relay and SMDS), situations can arise for which this
behavior
> is less than ideal. For these situations, you may want to disable split
> horizon.
>
> Hope this clears up the issue.
>
> Brian Stewart
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