RE: Prefix-list

From: subodh.rawat@wipro.com
Date: Tue Oct 02 2007 - 04:37:43 ART


prefix-list 0.0.0.0/0 le 32 and 0.0.0.0/0 ge 1 have same effect, i.e. To
permit or deny any routes. While 0.0.0.0/0 is exact match of default
route.

So below two configurations have same effect.

Ip prefix-list MYLIST deny 192.168.1.0/24

Ip prefix-list MYLIST permit 0.0.0.0/0 ge 1
AND
Ip prefix-list MYLIST deny 192.168.1.0/24 <http://192.168.1.0/24>
Ip prefix-list MYLIST permit 0.0.0.0/0 <http://0.0.0.0/0> le 32

Hope this helps.

Regards
Subodh

________________________________

From: Saul Arjona [mailto:saul.arjona.bueno@gmail.com]
Sent: Tuesday, October 02, 2007 11:36 AM
To: Subodh Singh Rawat (WT01 - TELECOM SERVICE PROVIDER)
Cc: sameh@bayanat.com.sa; ccielab@groupstudy.com
Subject: Re: Prefix-list

If you use:

Ip prefix-list MYLIST deny 192.168.1.0/24

Ip prefix-list MYLIST permit 0.0.0.0/0 ge 1

 You would be denying 192.168.1.0/24 network and also de default route
0.0.0.0 and permitting everything else

Since the task states that you deny 192.168.1.0/24 and permit everything
else I would use

Ip prefix-list MYLIST deny 192.168.1.0/24
Ip prefix-list MYLIST permit 0.0.0.0/0 le 32

regards
-Saul

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