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cidr [2016/05/09 16:22]
steve
cidr [2016/05/09 16:24]
steve
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 That is, if you have ''​192.168.1.0/​21'',​ which gives you ''​8'',​ then if you go down one # -- from ''​192.168.1.0/​21''​ to ''​192.168.1.0/​20''​ -- 20 being the next possible range size, then your number ''​8''​ is going to double to ''​16''​. That is, if you have ''​192.168.1.0/​21'',​ which gives you ''​8'',​ then if you go down one # -- from ''​192.168.1.0/​21''​ to ''​192.168.1.0/​20''​ -- 20 being the next possible range size, then your number ''​8''​ is going to double to ''​16''​.
 +
 +The opposite is also true, going from ''​192.168.1.0/​21''​ to ''​192.168.1.0/​22''​ is going to give you less addresess -- 4.