Re: inverse masks

From: Jerry (phase90@comcast.net)
Date: Sun Mar 09 2003 - 22:25:38 GMT-3


Just try to commit this to memory: Zeroes in the mask means the address
must match in that bit position. The "ones" can be thought of as "don't
care" bit positions. This is why
a host of 0.0.0.0 255.255.255.255 is the long way of specifying any host in
the extended access-list.

Hope something clicked.

Jerry
----- Original Message -----
From: eric <namaste@pacbell.net>
To: Ccielab <ccielab@groupstudy.com>
Sent: Sunday, March 09, 2003 7:55 PM
Subject: inverse masks

> Hello,
>
> Does anybody have a formula or a shortcut that will help me get these.
> I dont know why I cant seem to get my mind around it. I just end up
> confusing myself with the ORed results. It cant be as hard and as
confusing
> as I am making it out to be.
>
> Regards,
>
> ~e



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