From: Gary Duncanson (gary.duncanson@googlemail.com)
Date: Thu Jul 05 2007 - 11:46:19 ART
I suppose what you have to work with may steer you one way or another.
Mostly I see OSPF on the large networks.
IS-IS is still around in some ISPs AS last time I looked into it. UUNET for
example.
Caslow talks about it, apparently the use of IS-IS was driven by the
mandatory support of CLNP by the US Federal Government in the early 1990's.
Then they adopted TCP/IP as the primary protocol abandoning support of GOSIP
and CLNP. Something of a choice between OSPF and IS-IS for some companies
in the mid-late 90's although some were 'entrenched' in using IS-IS by this
time.
I'm sorry it's off the lab because I never got to play with it on live
networks :)
Mixed environments make EIGRP difficult.
----- Original Message -----
From: "Jvrg Buesink" <jorgbuesink@gmail.com>
To: "john matijevic" <john.matijevic@gmail.com>
Cc: "Cisco certification" <ccielab@groupstudy.com>
Sent: Thursday, July 05, 2007 3:15 PM
Subject: Re: OT routing protocol for internal network
> Hi John,
>
> In my opinion you made the right choice..
> OSPF and Integrated ISIS are both IGP's that support large networks, since
> they have capabilties such as: Area's, Different Levels, etc..to optimize
> routing and reduce routing complexity.
> Some people prefer OSPF and some prefer ISIS...both both will do the job!
>
> EIGRP is also a great protocol, but please remember it is a Cisco
> propriatary protocol, so this really ties you down to use Cisco gear...
>
> RIP is NOT a good option for large networks..
>
> Regards,
>
> Jorg Buesink
> CCIE#15032 [SP, R&S]
> http://www.jorgbuesink.nl
>
> _______________________________________________________________________
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