From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Sat Dec 31 2005 - 02:48:44 GMT-3
Unless the lab specifically asks for redundancy or states to not have
suboptimal routing, then just do not about those issues. Many people
spend unnecessary time on solving redundancy and/or suboptimal routing
issues when the proctors are not going to even check for them.
The only time you normally would even consider redundancy without the
lab specifically asking for it, is when you have an interface backing up
another interface (i.e. ISDN).
HTH,
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
________________________________
From: nenad pudar [mailto:nenad.pudar@gmail.com]
Sent: Friday, December 30, 2005 8:28 PM
To: Brian Dennis
Cc: Nawaz, Ajaz; ccielab@groupstudy.com
Subject: Re: mutual redistribution
Hi Brian
Actually I have the question related to this
In the Internetork book and many other documents for this scenario and
similar ones (where the other routing protocol is RIP or EIGRP with
existing external routes)
preferred solution seems to be filtering using tags.
However this doe not provide the redundancy .
My question is if redundancy was not mentioned anywhere in lab
requirements is it safe do filtering (match easier) and not to provide
any redundancy ?
thanks
Nenad
On 12/30/05, Brian Dennis <bdennis@internetworkexpert.com> wrote:
If you know what problem could occur with this topology, if there even
is one to begin with, you will quickly be able to determine the
appropriate solution. I'll give you two hints on how you can answer
your own question:
1) EIGRP has a higher administrative distance for external routes by
default for a reason. What is that reason?
2) If there are not any external EIGRP routes in EIGRP before
redistribution is done between EIGRP and OSPF, you will not need to do
anything (tags, AD, distribute-list, etc). If you do have external
EIGRP routes before doing redistribution or switched EIGRP with RIP, you
would then have an issue to resolve.
Remember that it's just as important to understand why you are doing a
certain configuration as much as it is to know how to do the
configuration ;-)
HTH,
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
-----Original Message-----
From: nobody@groupstudy.com [mailto: nobody@groupstudy.com
<mailto:nobody@groupstudy.com> ] On Behalf Of
Nawaz, Ajaz
Sent: Friday, December 30, 2005 5:40 PM
To: ccielab@groupstudy.com
Subject: mutual redistribution
When mutually redistributing between eigrp and ospf at two separate
points
in the network, what the cleanest & simplest way for preventing imminent
route feedback?,
Having read the archives there's mixed opinions between the use of AD
and
Tags
Many thanks
Ajaz Nawaz
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