RE: PREFIX-LIST Interpretation

From: Scott Morris (smorris@ipexpert.com)
Date: Wed Jun 06 2007 - 22:06:12 ART


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
Fax: +1.810.454.0130
http://www.ipexpert.com
 

-----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



This archive was generated by hypermail 2.1.4 : Sun Jul 01 2007 - 17:24:47 ART