From: JamesGEF (jamesgef@sympatico.ca)
Date: Tue Dec 02 2003 - 13:27:41 GMT-3
Using ACLs for redistribution is probably the safest way, but it's not very
dynamic. If new internal routes are added to the IGP, then you will have to
modify the ACLs. Now in real life, this may be too tedious.
However, in the lab exam, is it better to be prudent and use ACLs to avoid
the loops and make your network stable? What I'm asking is, do you get
graded on how you do the redistribution, or do you get graded on simply
avoiding the loops, even if it's using ACLs?
James
----- Original Message -----
From: "David Hiers" <David_Hiers@adp.com>
To: <ccielab@groupstudy.com>
Sent: Tuesday, December 02, 2003 10:49 AM
Subject: RE: IGP Redistribution scenario
> Here's what worked for me:
>
> 1. Never redistribute without a routemap* (be a control freak)
> 2. Always write the most restrictive acl possible for the routemap (be a
bigtime control freak)
> 3. Always run "debug ip routing". It should be so quiet that you don't
even know that you're debugging anything at all (be a vigilant, bigtime
control freak)
> 4. Master admin distance, but only mess with it if someone holds a gun to
your head
>
>
> *Yes, even (and especially) for static and connected routes!
>
> David
>
>
> ********************************************
> David Hiers
> CCIE, CISSP
> ADP Dealer Services
> 2525 SW First Avenue
> Portland, OR 97201
>
> v: 503 402 3703
> email: david_hiers@adp.com
> ********************************************
>
>
> -----Original Message-----
> From: rnasr [mailto:rnasr@s2n.com.au]
> Sent: Monday, December 01, 2003 7:41 AM
> To: 'Thomas Larus'; 'Eric Cables'; 'ccielab'
> Cc: ccielab@groupstudy.com
> Subject: RE: IGP Redistribution scenario
>
>
>
http://www.cisco.com/en/US/tech/tk365/tk207/technologies_tech_note09186a0080
> 09487e.shtml
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Thomas Larus
> Sent: Wednesday, December 03, 2003 2:17 AM
> To: Eric Cables; ccielab
> Cc: ccielab@groupstudy.com
> Subject: Re: IGP Redistribution scenario
>
>
> That is a brilliant idea, since it serves as a useful reminder of the
> potential for admin distance issues. I don't know if there is ever an end
> to the learning when it comes to the very difficult subject of route
> redistribution.
>
> I love this list! You know there are people who are snobby about this
list,
> and join it and quickly leave it. They think they are too smart to
benefit
> from it, or think that it is bad that you can different answers to a
> question here, and that, heaven forbid, one of the answers might be wrong.
> Or they think that the list is somehow tainted by the presence of people
who
> don't seem to know enough at the start to be preparing for the CCIE Lab.
>
> They may be right in some sense about some of the relative newcomers, but
if
> they leave because of these newcomers, it is their loss.
>
> I could have gone a long time without ever thinking of your neat idea.
>
> Sincerely,
>
> Tom Larus, CCIE #10,014
> Author of CCIE Warm-Up: Advice and Learning Labs
> http://www.ipexpert.com/products_services/product.asp?sku=ip7777
> tlarus@ipexpert.com
>
>
> ----- Original Message -----
> From: "Eric Cables" <skatter@blackened.net>
> To: "ccielab" <ccielab@cox.net>
> Cc: <ccielab@groupstudy.com>
> Sent: Tuesday, December 02, 2003 12:17 AM
> Subject: Re: IGP Redistribution scenario
>
>
> > That's a pretty big question. IGP redistribution is probably one of the
> > harder aspects of the lab, and you can bet you'll run into problems.
> >
> > One method I like to use is redistribution with a route-map, and tag the
> > routes with an easy to remember # so that it can be identified, and
> > modified later based on that tag. Since you'd be redistributing with a
> > route-map you also have the flexibility to modify metrics, etc..
> >
> > For example, you can tag the the routes based the IGP's administrative
> > distance, which should be easy to remember...
> >
> > Hope this helps,
> >
> > --
> > Eric Cables
> >
> > On Mon, 1 Dec 2003, ccielab wrote:
> >
> > > Is there any tried and true method to the approach for redistribution
of
> IGP
> > > routing protocols in the lab.
> > > Such as when you have a two point, mutual redistribution problem.
> Should I
> > > start with distributr lists on
> > > both routing protocols, or adjusting administrative distance, I am
> looking at
> > > netmaster sample lab for example.
> > > THanks
> > >
> > >
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