ACL Discontiguous Network Matching Question

From: Lab Rat #109385382 (techlist01@gmail.com)
Date: Mon Nov 27 2006 - 03:27:40 ART


I know how to derive the inverse mask for matching an ACL to discontiguous
subnets, but how does one derive the network address again? I must have
forgotten this part of the procedure.

For example, if I'm supposed to match the following networks using a single
ACL:

199.1.101.0/24
199.1.109.0/24
199.1.197.0/24
199.1.204.0/24

What is the network statement to use in the ACL? More importantly, why? If
there is a Doc CD location that explains this logic in detail, that would be
great.

Thanks,

Ed



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