On Fri, Jun 6, 2008 at 10:51 AM, Karl Cunningham <[EMAIL PROTECTED]> wrote:
> On 6/6/2008 9:07 AM, Todd Walton wrote:
>>
>> 167.190.45.0 (address) and 255.255.255.0 (mask)
>>
>> which yields an IP range of 167.190.45.1 up to 167.190.45.254. That's
>> fine. But then some of them are of the type:
>>
>> 167.190.1.24 (address) and 255.255.255.248 (mask)
>>
>> which yields an IP range of... ?
>
> If you think of the IP address and subnet mask as dotted-quad
> representations of binary numbers it might make more sense.
>
>> Sometimes the mask is like 255.255.240.0 or 255.255.255.192. Aagh!
>> What the heck is going on? Is there a calculator for this stuff?
>
> ipcalc is a Linux calculator for this stuff.
>
> $ ipcalc 167.190.1.24 255.255.255.248
> Address: 167.190.1.24 10100111.10111110.00000001.00011 000
> Netmask: 255.255.255.248 = 29 11111111.11111111.11111111.11111 000
> Wildcard: 0.0.0.7 00000000.00000000.00000000.00000 111
> =>
> Network: 167.190.1.24/29 10100111.10111110.00000001.00011 000
> HostMin: 167.190.1.25 10100111.10111110.00000001.00011 001
> HostMax: 167.190.1.30 10100111.10111110.00000001.00011 110
> Broadcast: 167.190.1.31 10100111.10111110.00000001.00011 111
> Hosts/Net: 6 Class B
>
There are 10 types of people in the world. Those who understand
binary and those who don't.
carl
--
carl lowenstein marine physical lab u.c. san diego
[EMAIL PROTECTED]
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