Re: LAN IP addresses

Steve wrote:

Hi,

I am not a specialist on network, but I have a network on
192.168.0.0 / 255.255.255.0

I fear not to have enough IP addresses. I know, that the solution would
be to get another router and to get a second sub-network.

I just wonder if I change my LAN ( 192.168.0.x/255.255.255.0 ) to
192.168.x.x / 255.255.0.0
- Would it be possible to do that ?
- Would it get me all IP addresses like : 192.168.0.2 and 192.168.3.4
accessible on the same network ?
( ... that could solve my problem and five me more IP addresses ..... )

Thanks for your help

This is just a side note.

As Burkhard Ott recommends you should be routing traffic between smaller
subnets, except you have many machines wanting to talk to few ones.

IANA (http://www.iana.org) says there are 256 subnets with a maximum of
256-2 (one network base and one broadcast address) addresses each in the
192.168.x.y address space. Bigger subnets should use 172.16-31.x.y which
allows 16 subnets with a maximum of (256^2)-2 = 65534 addresses each. Or,
if even larger subnets are required, use 10.x.y.z which allows one huge
subnet of (256^3)-2 = 16777214 addresses.
This is a relict of the old times when there were no netmasks, but it is
still valid...

So if you intend to widen up your netmask you should also use appropriate
address space.

Felix
.

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