Split-horizon Issue

From: Paul Grey (paul@greyboy.org)
Date: Mon Sep 30 2002 - 13:24:17 GMT-3

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Group

By default split-horizon is turned off on physical frame-relay i/fs.

So if I'm running a DV routing protocol, e.g. RIP between two routers, A
and B, on physical FR then there should be no problem.

If router B is mutually redistributing between RIP and say, OSPF, still
no problem as OSPFs AD is 110 compared to RIPs AD of 120. So any
reflected routes will not get fed back into OSPF.

However, should I out of good practice enable split-horizon on physical
FR in this case.

I know if RIP is replaced with IGRP then things change and you would
have to enable SH. I'm also aware of SH issues in hub-spoke
arrangements.

Any thoughts?

TIA

Paul

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