From: adeolu@sympatico.ca
Date: Mon Dec 06 2004 - 16:51:33 GMT-3
Hi everyone,
I was just going over prefix lists and I wanted to be sure that I have the logic properly sorted out. Please take a look at the question and answer pair below:
Construct a prefix list that denies only supernets, and permits everything else.
ip prefix-list test17 seq 5 deny 0.0.0.0/1 le 7
ip prefix-list test17 seq 10 deny 128.0.0.0/2 le 15
ip prefix-list test17 seq 15 deny 192.0.0.0/3 le 23
ip prefix-list test17 seq 20 permit 0.0.0.0/0 le 32
Can this also be answered as follows?
ip prefix-list test17 seq 5 permit 0.0.0.0/1 ge 8
ip prefix-list test17 seq 10 permit 128.0.0.0/2 ge 16
ip prefix-list test17 seq 15 permit 192.0.0.0/3 ge 24
ip prefix-list test17 seq 20 deny 0.0.0.0/0 ge 32
Any help is much appreciated.
Ade
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