On 25 Mar 2006 09:18:59 -0800, davidjxyz@gmail.com <davidjxyz@gmail.com> wrote:
| Hi there,
|
| I want to divide a private network in to subnets (common enough). We
| are currently using 192.168.1.* for the whole network, no subnets.
|
| I want to expand the space and have three subnets with up to 2000 hosts
| on each.
|
| Can I use 192.168.[1-8].* for the first, 192.168.[9-16].* for the
| second etc, with a 255.255.248.0 netmask?
|
| I know that 192.168.*.* is a Class C which is traditionally /24 but I
| also know that classful subnets are deprecated. So is /21 okay for
| 192.168.*.* ?
|
| Also, on principles: each subnet should be the same size (netmask),
| correct?


Sorry if this turns out to be a duplicate. The previous try looks like
it failed from this end.


Using a /21 netmask is OK, but the suggested subnets you gave are all
identical.

To be in different subnets, IP addresses must be different within the
first x bits of the address, where 'x' is the number in the subnet mask.

The list of /21 subnets in 192.168.0.0 starts with:

192.168.0.0/21
192.168.8.0/21
192.168.16.0/21

and so on, with the 3rd octet increasing by 8 each time. There will be
32 of these subnets, ending with

192.168.248.0/21


I hope this s.


--
Reverend Paul Colquhoun, ULC. http://andor.dropbear.id.au/~paulcol
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