Re: custom subnet mask

From: Herb Martin (news_at_LearnQuick.com)
Date: 01/31/05 

Date: Sun, 30 Jan 2005 21:25:22 -0600

"Steve" <traygo@hotmail.com> wrote in message
news:boiqv0pemkhqsmfpi1pn8gootqqmmdktth@4ax.com...
>
> Ok, then a 192.168.1.x machine can't communicate with a 192.168.2.x
machine.
> I just tried that, and indeed, it didn't work.
> Thanks

Not without a router.

A 2.x can communitcate with 3.x without the router though.

If these machines use the network heavily you may have
a bandwidth problem and introducing a router and more
subnets might be a useful consideration. 

-- 
Herb Martin
>
> >no, the range is set by combining the machine's ip address  with the
mask.
> >so with your 255.255.254.0 mask the groups you can use are:
> >
> >192.168.0.0-192.168.1.255
> >192.168.2.0-192.168.3.255
> >192.168.4.0-192.168.5.255
> >192.168.6.0-192.168.7.255
> >
> >all machines that need to talk to each other must be in the same range of
> >addresses above.
> >
> >
> >"Steve" <traygo@hotmail.com> wrote in message
> >news:oecqv0t129rs81dsv43or5pr6i8ko42c8j@4ax.com...
> >> We're going to be implementing a subnet mask of 255.255.254.0 using IP
> >range
> >> 192.168.0.1 -  192.168.1.254   (we need approx 280 IPs)  -  I've done a
> >simple
> >> test with a few PCs  and all seems to be ok.
> >>
> >> I've got a general question, just out of curiousity:
> >> Let's assume no DHCP for the sake of this question.
> >>
> >> Now, using 255.255.254.0 gives me approx 512 IPs, so two "ranges" of
IPs.
> >>
> >> I was setting up a couple of PCs with 192.168.1.x IPs, and it struck
me,
> >why
> >> does that work with 192.168.0.x ?   I mean, as far as the PC with a
> >192.168.1.x
> >> is concerned, it could work with either 192.168.0.x or 192.168.2.x.  Is
it
> >> because it is "set" as soon as any PC shows up on the LAN with either a
> >> 192.168.0.x or a 192.168.2.x ?
> >>
> >> Or is like this:
> >> A PC with a 192.168.1.x  IP could communicate with both a PC with a
> >192.168.0.x
> >> and with a PC with a 192.168.2.x  IP, but the 192.168.0.x could
> >communicate with
> >> only with the 192.168.1.x  PC.  Is that correct?
> >>
> >> Like I said, just curious.
> >>
> >> Thanks
> >
>

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