Re: [TCLUG:12953] IP/netmask pair

[Dave Sherohman <esper@usinternet.com>]

Timothy Wilson said:
> What would be the IP/netmask pair for the following (I can't remember how
> to figure it out).
> 
> 209.98.170.0/24
  ^^^^^^^^^^^^ ^^
  |             |
  IP address    Number of 1s in netmask

So you've already got the IP (209.98.170.0) and the netmask starts with 24
bits on and the rest are off.  24 = 3 * 8 and 3 bytes of all 1s followed by a
byte of all 0s gives a netmask of 255.255.255.0.

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