From: Jason Guy \(jguy\) (jguy@cisco.com)
Date: Sun Jun 10 2007 - 20:41:39 ART
Thanks! I will be reading tonight...
Jason
> -----Original Message-----
> From: Sean C. [mailto:Upp_and_Upp@hotmail.com]
> Sent: Sunday, June 10, 2007 8:01 PM
> To: Jason Guy (jguy); ccielab@groupstudy.com
> Subject: Re: Multiple Redistribution points
>
> Hi Jason,
>
> You might want to check the archives of the various vendors. They may
> have
> something in their tech library available for free download. I know
NMC's
> pdf helped me when I was studying. Check out their "A scenario with
> multiple redistribution points" at the link below (from the sounds of
your
> e-mail's subject line, I almost suspect you already have discovered
this
> gem):
> http://www.netmasterclass.net/site/libpdf.php
>
> As you've stated, there's so many different ways to redistribute and
> manipulate routes (redistribution between protocols, connected
interfaces,
> changing Admin Distance, distro lists, metrics, PBR, passive-ints,
> etc....),
> it's hard to offer one all inclusive document. While on the theme of
NMC,
> I
> can vouch that their workbook really explained different
redistribution
> patterns. The ins and outs of each solution. Also, IE's CoD was a
good
> resource at demonstrating the effects of various techniques. But, of
> course, these cost some $$...
>
> HTH,
> Sean C #17085
> ----- Original Message -----
> From: "Jason Guy (jguy)" <jguy@cisco.com>
> To: <ccielab@groupstudy.com>
> Sent: Sunday, June 10, 2007 11:35 AM
> Subject: Multiple Redistribution points
>
>
> Hi group,
>
> I am sitting here trying to determine what the subtle differences are
> between the various methods of configuring redistribution when there
are
> multiple redistribution points, in this case it is EIGRP<->OSPF.
>
> I like to typically use the route tags to do my filtering, but I find
> that this does not work if there is a backup scenario, and the
protocol
> domain becomes partitioned. It seems easy and straight forward.
>
> The alternate method I have read about (probably on the list) is
> altering Admin Distance for the routes redistributing at the protocol
> boundary. I found this works for the partitioned domain problem. I
> believe by adding an external distance to OSPF higher than EIGRP
> external, it can ignore routes that would cause a route loop. I am
> still pondering this however. :)
>
> Is there any good doc to read to understand the subtle art of
> redistribution and other methods of doing it, and perhaps situations
> when to apply one versus another?
>
> Just when I thought I had a concept down...it scurries away. :)
>
> Jason
>
>
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