Prefix-List

Unanswered Question
Jun 11th, 2009

Hi, I have to open 112.0.0.0/8, 113.0.0.0/8,114.0.0.0/8,115.0.0.0/8,116.0.0.0/8,117.0.0.0/8,118.0.0.0/8 & 119.0.0.0/8 in Prefix list, but in one line. Please help how can I use le & ge funda for that. I need to use only one line.

I have this problem too.
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Harold Ritter Thu, 06/11/2009 - 09:05

Rupesh,

These 8 prefixes all fit inside 112/5 as the first 5 bits are identical.

The following line should therefore do the job.

ip prefix-list test seq 5 permit 112.0.0.0/5 ge 8 le 8

Regards

Rupesh Kashyap Wed, 06/17/2009 - 08:20

what about if all subnet mask will 24 ?

Should prefix list like-

ip prefix-list test seq 5 permit 112.0.0.0/5 ge 24 le 24 ?

John Blakley Wed, 06/17/2009 - 12:40

If they're not ever going to be longer than 24, you should be able to do:

ip prefix-list test permit 112.0.0.0/5 le 24

HTH,

John

John Blakley Wed, 06/17/2009 - 12:46

Harold,

I'm just getting into the prefix-lists. Would you be able to just use the le 24 to match up to 24 bits? You wouldn't need the ge 24, right? Or am I wrong on this?

Thanks,

John

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