Subneting subneting ....

Unanswered Question
Jun 7th, 2010

hello,

Currently studying for CCNA and have one question about subneting.

Here is example: we have an ip address 172.16.0.0/24 (255.255.255.0)

we would say this is the range 172.16.0.1 – 172.16.0.254.

But how the author of book is able to get this range: 172.16.0.1 –  172.16.255.254. ?

I have this problem too.
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Leo Laohoo Mon, 06/07/2010 - 15:21

It's a type-o.

172.16.0.0/24 means that the subnet is from 172.16.0.0 to 172.16.0.255.  The use-able IP address range is from 172.16.0.1 to 172.16.0.254.

burleyman Tue, 06/08/2010 - 04:57

Or it could be a typo this way as well...

172.16.0.0/16  (Class B) which would give you  172.16.0.0 - 172.16.255.255 with usable IP address range of 172.16.0.1 - 172.16.255.254

Mike

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