Re: Friday Follies Returns - OSPF route preference

From: fwells12 (fwells12@xxxxxxxxxxx)
Date: Fri Mar 02 2001 - 05:35:14 GMT-3


   
In Tom Thomas' Cisco Press book 'OSPF Network Solutions Design Guide' is
says exactly the opposite!! IE: a type 2 route is always preferred to a
type one route to the same destination. Type 1 routes are those which have
their costs incremented as they cross the network. I would hazzard a guess
that on that basis alone they would be preferred due to the likelyhood of
them reflecting more accurate costs.

----- Original Message -----
From: Frank Jimenez <franjime@cisco.com>
To: <ccielab@groupstudy.com>; Chuck Larrieu <chuck@cl.cncdsl.com>
Sent: Thursday, March 01, 2001 10:20 PM
Subject: Re: Friday Follies Returns - OSPF route preference

> Chuck,
>
> As fate would have it, I was just pondering the same thing at a customer
site a few days ago.
>
> The answer is a), given that the routes are both for the same destination.
>
> From: http://www.cisco.com/warp/public/104/3.html under the heading 'E1
vs. E2 External Routes'
>
> "A type 1 route is always preferred over a type 2 route for the same
destination."
>
>
> Frank Jimenez, CCIE #5738
> franjime@cisco.com
>
>
>
>
> At 10:06 PM 03/01/2001 -0800, you wrote:
> >A less fun reprise of my once famous Friday Follies questions:
> >
> >Given the following information, which route will ospf prefer, and
therefore
> >place into the routing table?
> >
> >a) E1 ( external type 1 ) with a cost of 84
> >b) E2 ( external type 2 ) with a cost of 20
> >
> >For extra credit - why?
> >( I don't know either and I can't find a good explanation on the doc CD )
> >( but this time I have traces and captures to prove the point )
> >
> >Chuck
> >----------------------
> >I am Locutus, a CCIE Lab Proctor. Xx_Brain_dumps_xX are futile. Your life
as
> >it has been is over ( if you hope to pass ) From this time forward, you
will
> >study US!
> >( apologies to the folks at Star Trek TNG )
> >



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