GENERATE Command

[Jeff Grossman]

on 12/29/02 10:15 PM, Mark_Andrews at isc.org at Mark_Andrews at isc.org wrote:

> 
>> I was not aware that you could use wildcards like that.  Thanks for
>> that  information.  I will give it a try.  One more question.  In my
>> examples, what IP range is the 10.10.192/19 and 10.10.0/18?  I am
>> still having some trouble figuring out what the /## mean.
>> 
>> Thanks,
>> Jeff
> 
> /## indicates the number of bits in the mask
> 
> /16 255.255.0.0
> /17 255.255.128.0
> /18 255.255.192.0
> /19 255.255.224.0
> /20 255.255.240.0
> /21 255.255.248.0
> /22 255.255.252.0
> /23 255.255.254.0
> /24 255.255.255.0
> 
> 10.10.192/19 means all possible combinations of a.b.c.d where
> (a.b.c.d & 255.255.224.0) == 10.10.192.0
> 10.10.192/19 is 10.10.192.0 - 10.10.233.255
> 
> 10.10.0/18 is 10.10.0.0 - 10.10.63.255

Thank you for that information.  Makes things a bit clearer now.

Jeff
-- 
Jeff Grossman (jeff at stikman.com)