Re: Narbik's Gap WB, BGP route dampening, reg exp doubt!?

From: Narbik Kocharians (narbikk@gmail.com)
Date: Thu Dec 18 2008 - 14:06:01 ARST

Could you please tell me which lab you are referencing, is it in the GAP or
Soup-to-Nuts?

On Thu, Dec 18, 2008 at 1:06 AM, Andy Hogard <andyhogard@gmail.com> wrote:

> Hi again,
>
> Well now this is the question ya " All the existing and future prefixes,
> from as 300 should have the following parameters applied: and then the
> question goes on to specify certain dampening parameter values."
>
> In the solution a regexp of ^300$ is used to match the routes, this reg exp
> is used for routes that originate from 300 or have only 300 in the as-path.
> But if you read the question again its says that *"routes from as
> 300"*which includes all the routes that pass from the as 300 as well,
> yeah they
> dont originate ya.. But then the question is not exclusively saying
> anything
> about it. As a result I would rather go with more generic reg exp of ^300_
> ..init !?
>
> This to me looks like a proctor question, can Narbik Sir please answer this
> ..as he would be the best proctor for this lab he has set. :D
>
>
> Btw, this is the routing table on R2 on which dampening has to be done,
>
> R2#sh ip bgp
> BGP table version is 8, local router ID is 2.2.2.2
> Status codes: s suppressed, d damped, h history, * valid, > best, i -
> internal,
> r RIB-failure, S Stale
> Origin codes: i - IGP, e - EGP, ? - incomplete
>
> Network Next Hop Metric LocPrf Weight Path
> *> 1.0.0.0 131.1.12.1 0 0 100 i
> *> 2.0.0.0 0.0.0.0 0 32768 i
> *> 3.0.0.0 131.1.23.3 0 0 300
> i
> *> 4.0.0.0 131.1.23.3 0 300
> 400 i
> *> 5.0.0.0 131.1.23.3 0 300
> 400 500 i
> *> 40.4.4.0/24 131.1.23.3 0 300
> 400 i
> *> 44.4.4.0/24 131.1.23.3 0 300
> 400 i
> R2#
>
>
> Btw, I am kicking some butt hard as far as bgp dampening is concerned.
>
>
> Regards,
> Andy.
>
>
>
>
> --
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-- 
Narbik Kocharians
CCSI#30832, CCIE# 12410 (R&S, SP, Security)
www.MicronicsTraining.com
www.Net-Workbooks.com
Sr. Technical Instructor

Blogs and organic groups at http://www.ccie.net

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