[Ilugc] tataindicom usb modem with mandriva2008.1
- From: knura@xxxxxxxxx (Arun Khan)
- Date: Mon Aug 25 10:24:58 2008
On Monday 25 Aug 2008, Kenneth Gonsalves wrote:
....snip...
Today it is CIDR.
You could have an IP 192.168.0.1 but not an IP that ends in .0
like 192.168.1.0 since both 192.168.1.255 and 192.168.1.0 are used
for broadcast.
is this a convention or a rule?
It is a rule. In general, the IPv4_number/no_of_bits defines the
network id. The remainder bits define the "no of hosts" possible in
that network. All 0s in "host field" reserved for the network and all
1s in "host field" reserved for broadcast.
For example a.b.c.d/24 defines a 24 bit mask, a.b.c.0 is the network id
and a.b.c.255 is the broadcast.
<
http://www.tcpipguide.com/free/t_IPBasicAddressStructureandMainComponentsNetworkIDa.htm>
--
Arun Khan
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