"Michael Graves" <mgraves at mstvp dot com> wrote:
> But how do I know what range of IP address?
> 
> My LAN is all in the 192.168.1.x range. My VOIP devices are all in
> 192.168.1.3x.

I assume that you mean that your VOIP devices are in the range from
192.168.1.30 - 192.168.1.39 (10 addresses). Which is not very smart, since
subnets are generated by binary subdivision. If you can manage to use the
subnet from 192.168.1.32 to 192.168.1.39 (8 addresses), you can define it
with the CIDR notation 192.168.1.32/29. Should you however need to retain
the *.30 and *.31 addresses, you'll need to set up two subnets: the
aforementioned one (192.168.1.32/29) plus 192.168.1.30/31.

Easy.

If you wanna play yourself, you can toy around eith the CIDR online
calculator: http://www.subnet-calculator.com/cidr.php - this might be
instrementive in bringing you up to speed.

best rgeards, Klaus

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