GENERATE Command
Mark_Andrews at isc.org
Mark_Andrews at isc.org
Mon Dec 30 06:15:33 UTC 2002
> 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
Mark
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark.Andrews at isc.org
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