network 10.1.1.0 0.0.0.255 area 0.0.0.1
and
network 10.1.1.0 0.0.0.255 area 1
these networks have the same area id... easy enough...
what is 2^32? all 1's or f's or 255's, or...
4,294,967,295
which of course is 4,294,967,296 total numbers because of the 0...
area id 0.0.1.1 = area id 257
that's a scott morris example right there... God forbid you get hit with this kind of bullshit on d-day... and that's an easy one...
why does 0.0.1.1 = 257?
because 1 in the 3rd octet is the 24th bit place holder from the left which equals 256 and 1 in the 4th octet is the 32nd bit place holder from the left which equals 1...
as you can see below...
another easy example:
area id 271
that is 256 + 15
0.0.1.15
0.0.2.15 and it starts to suck
the last four place holders = 15 as before but in the third octet we've moved up a place holder
512 256 128 64 32 16 8 4 2 1
512 + 15 = 527
get comfortable with all the powers of 2, because that ain't nice...
it gets worse...
area id 0.0.3.0 = 768 because
512 256 128 64 32 16 8 4 2 1
you have to start adding the big place holders...
area id 1024 is
1024 512 256 128 64 32 16 8 4 2 1
or 0.0.4.0
knock yourself out...
