I currently manage a school that is growing and will run out of internal IP
addresses. We currently use 192.168.1.x and 255.255.255.0 for the network.
What would be the easiest way to allow for more available IP addresses on the
LAN?

Re: Running out of LAN IP addresses by RPK

RPK
Thu Jun 26 15:42:46 PDT 2008

If they are purely for internal use (which they must be in that range), wny
not just change the subnet mask to 255.255.0.0.

You will then have enough addresses for a lifetime.


"Aaron" <Aaron@discussions.microsoft.com> wrote in message
news:21B0836B-0D0F-477B-8FFB-AC2E05AD3746@microsoft.com...
>I currently manage a school that is growing and will run out of internal IP
> addresses. We currently use 192.168.1.x and 255.255.255.0 for the
> network.
> What would be the easiest way to allow for more available IP addresses on
> the
> LAN?
>



Re: Running out of LAN IP addresses by Phillip

Phillip
Fri Jun 27 06:54:41 PDT 2008

Because ethernet degrades after around 250-300 hosts on a single broadcast
domain (subnet). So you keep the /24 bit mask. If more hosts are needed
then you add a new IP segment.

--
Phillip Windell
www.wandtv.com

The views expressed, are my own and not those of my employer, or Microsoft,
or anyone else associated with me, including my cats.
-----------------------------------------------------



"RPK" <news@kco.co.uk> wrote in message
news:eooj3391IHA.5560@TK2MSFTNGP02.phx.gbl...
> If they are purely for internal use (which they must be in that range),
> wny not just change the subnet mask to 255.255.0.0.
>
> You will then have enough addresses for a lifetime.
>
>
> "Aaron" <Aaron@discussions.microsoft.com> wrote in message
> news:21B0836B-0D0F-477B-8FFB-AC2E05AD3746@microsoft.com...
>>I currently manage a school that is growing and will run out of internal
>>IP
>> addresses. We currently use 192.168.1.x and 255.255.255.0 for the
>> network.
>> What would be the easiest way to allow for more available IP addresses on
>> the
>> LAN?
>>
>
>



Re: Running out of LAN IP addresses by Aaron

Aaron
Fri Jun 27 08:48:02 PDT 2008

What if I change the subnet mask to 255.255.254.0? That would give me 510
hosts, correct? Usable would be 192.168.1.1 - 192.168.2.254?

"Meinolf Weber" wrote:

> Hello Phillip,
>
> Do you have some links about the degrading of the ethernet? We use /28 bit
> in our network, without any problems.
>
> Best regards
>
> Meinolf Weber
> Disclaimer: This posting is provided "AS IS" with no warranties, and confers
> no rights.
> ** Please do NOT email, only reply to Newsgroups
> ** HELP us help YOU!!! http://www.blakjak.demon.co.uk/mul_crss.htm
>
> > Because ethernet degrades after around 250-300 hosts on a single
> > broadcast domain (subnet). So you keep the /24 bit mask. If more
> > hosts are needed then you add a new IP segment.
> >
> > The views expressed, are my own and not those of my employer, or
> > Microsoft, or anyone else associated with me, including my cats.
> > -----------------------------------------------------
> >
> > "RPK" <news@kco.co.uk> wrote in message
> > news:eooj3391IHA.5560@TK2MSFTNGP02.phx.gbl...
> >
> >> If they are purely for internal use (which they must be in that
> >> range), wny not just change the subnet mask to 255.255.0.0.
> >>
> >> You will then have enough addresses for a lifetime.
> >>
> >> "Aaron" <Aaron@discussions.microsoft.com> wrote in message
> >> news:21B0836B-0D0F-477B-8FFB-AC2E05AD3746@microsoft.com...
> >>
> >>> I currently manage a school that is growing and will run out of
> >>> internal
> >>> IP
> >>> addresses. We currently use 192.168.1.x and 255.255.255.0 for the
> >>> network.
> >>> What would be the easiest way to allow for more available IP
> >>> addresses on
> >>> the
> >>> LAN?
>
>
>

Re: Running out of LAN IP addresses by Phillip

Phillip
Fri Jun 27 09:19:31 PDT 2008

"Aaron" <Aaron@discussions.microsoft.com> wrote in message
news:36881A22-EAB3-45C4-AC58-019385E6E1E5@microsoft.com...
> What if I change the subnet mask to 255.255.254.0? That would give me 510
> hosts, correct? Usable would be 192.168.1.1 - 192.168.2.254?

It would,...but I wouldn't.

You use lower bit masks in routing tables to Supernet subnets together over
backbones where there are multiple consecutive subnet furthers down the
line. That is how the whole Internet works between the differnet "levels"
of Internet Providers and also how large Private Corporations with 1000's of
machines and many subnets route their LAN/WAN/MAN traffic.

--
Phillip Windell
www.wandtv.com

The views expressed, are my own and not those of my employer, or Microsoft,
or anyone else associated with me, including my cats.
-----------------------------------------------------