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Re: LAN programming

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On 2013-02-20, bob <bob@coolfone.comze.com> wrote:
> Let's say you are programming on a network where hosts have IP
> addresses that are 192.168.0.x.
> Can someone help me remember what the valid values of x are for a PC?
> Is it something like 1 to 254?
> Maybe 2 to 254?
> I know some values are reserved or used for broadcasting or something,
> but I can't remember exactly what the deal is.

Assuming a subnet mask of 255.255.255.0, for the host part of the
IP address (the 'x' in your example) the values all-bits-zero (0)
and all-bits-one (255) are reserved for the network and the broadcast
address, respectively.  Also, you cannot use any value that is
already in use by other equipment on the network. If there's a
router that connects your network to other networks, and that router
has address 192.168.0.1 on your network, then you cannot use that
address for a PC.

So, valid values of x for a PC are 1..254, excluding values
that are already in use by other equipment on the network.

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Thread

LAN programming bob <bob@coolfone.comze.com> - 2013-02-20 14:05 -0800
  Re: LAN programming Ike Naar <ike@iceland.freeshell.org> - 2013-02-20 22:49 +0000
  Re: LAN programming Robert Wessel <robertwessel2@yahoo.com> - 2013-02-20 16:55 -0600
  Re: LAN programming Geoff <geoff@invalid.invalid> - 2013-02-20 16:10 -0800

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