Re: PREFIX-LIST Interpretation

From: CCIE GOAL (ccie.goal@gmail.com)
Date: Wed Jun 06 2007 - 22:23:36 ART


Ok, so if I get a question like this I will ask the proctor then...

Thanks Scott!

2007/6/6, Scott Morris <smorris@ipexpert.com>:
> I seem to remember having a similar conversation in the past... And I think
> the only answer everyone agreed with is that you should ask the proctor!
>
> If you ask the proctor in such a way that demonstrates you know the answer
> no matter which way it is interpreted, they would have no problem in
> clarifying things for you. If you go up and ask something like "what is
> this?" that may be a bit more vague and they'll think you may be fishing for
> information.
>
>
> Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE
> #153, CISSP, et al.
> CCSI/JNCI-M/JNCI-J
> VP - Technical Training - IPexpert, Inc.
> IPexpert Sr. Technical Instructor
>
> A Cisco Learning Partner - We Accept Learning Credits!
>
> smorris@ipexpert.com
>
> Telephone: +1.810.326.1444
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>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of CCIE
> GOAL
> Sent: Wednesday, June 06, 2007 9:01 PM
> To: Cisco certification
> Subject: PREFIX-LIST Interpretation
>
> Hi fellows,
>
> I have a doubt about how to interpret the following sentence about prefixes
> list:
>
> "Configure R1 only to receive "SUBNET PREFIXES BELLOW" 198.0.0.0/8.
>
> When I first saw it I understood to manipulate the prefix (mask length), so
> I would configure this:
>
> --> ip prefix-list SOLUTION permit 198.0.0.0/8 le 32
>
>
> But researching on the old posts on groupstudy I saw somebody manipulating
> the first octect:
>
> 0.0.0.0/1 le 32
> 128.0.0.0/2 le 32
> 192.0.0.0/6 le 32
> 196.0.0.0/7 le 32
>
> Which interpetation do you think that would be correct when the requirement
> states to filter the "subnet prefixes bellow"?
>
> Regards,
> Luciano
>
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