Access to sub network unreachable.
Dave Ihnat
dihnat at dminet.com
Sat Jan 10 12:59:21 UTC 2009
Ok, I'm not quite shut up. I just wanted to mentio that a useful tool
on every Linux/Unix system for doing netmask calculation is 'dc', if you
have trouble doing binary conversions in your head. Just
set the input or output base to binary, e.g.:
dc
2
o
248
p
11111000
and you have the netmask pattern for 255.255.248.0. (Well, everyone
knows 255 = 11111111). The other way:
dc
2
i
11100000
p
224
So you know that a 19-bit netmask would be 255.255.224.0.
(Yeah, there are all SORTS of IP calculators out there--software and
hardware. But 'dc' is, as I said, ubiquitous ...)
Cheers,
--
Dave Ihnat
dihnat at dminet.com
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