From: Brian (briane@surewest.net)
Date: Fri Jul 28 2006 - 12:32:10 ART
I have been looking at the following example on how to calculate an
appropriate mask.
http://www.internetworkexpert.com/resources/01700370.htm. While I
understand the process that was use (and it works well) I cannot figure
out how the mask was calculated using XOR in example 2. If I understand
XOR correctly anytime there are an even number of 1's in a computation
the result of XOR will be 0. When there are an odd number of 1's the
result will be 1. This does not seem to hold true in the example.
Can someone please help me understand how XOR was applied to come up
with the mask in example 2. Specifically the second octet is where the
confusion comes in. The only conclusions I can draw are that this is
not truly an XOR or I do not understand XOR.
By the way I tried to XOR 0011 in the MS calculator and the result is 0.
Thanks!
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