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Jeff:

You are correct. The subnet mask 255.255.255.0 limits your access to only those addresses in the last octet. You can change your workstation IP subnet to 255.255.0.0 without a reboot and immediately reach devices anywhere within the 192.168.0.0 - 192.168.254.254 IP ranges.

Rick Byrd

Sent from my iPhone

On Mar 30, 2023, at 10:55 AM, Jeff Crosby <jlcrosby@xxxxxxxxxxxxxxxx> wrote:

I tried that, Scott. Nothing shows up. There are 18 wireless access
points (16 warehouse, 2 office) and 2 switches (1 office, 1 warehouse) in
that range.

I'm checking now with the installer to see if they have some offsite router
"interfering" with this.

This installer no longer will support this for us. They installed it 4
years ago and have decided if they do not control a customer's entire
infrastructure, they will support none of it, so we were summarily dropped.

They have already pledged to help the new support company (of which we
already signed a contract with) to get everything moved over. There are 3
SSIDs involved, 2 still working and 1 not working because their router has
it "isolated." I was just trying to learn what I could in the meantime.


On Thu, Mar 30, 2023 at 10:34 AM Scott Klement <pctech@xxxxxxxxxxxxxxxx>
wrote:

You can tell Advanced IP Scanner which addresses to check... there's a
blank at the top of the window (below the "scan" button, to the left of
the "search" box) and you can just type 192.168.190.1 - 254

That tells it to scan IP addresses in the range of 192.168.190.1 -
192.168.190.254

I wouldn't change your netmask -- that changes the way packets are
routed from your PC. If you did that, most likely you would no longer be
able to reach 192.168.x.x computers unless they were on your LAN.

On 3/30/2023 7:46 AM, Jeff Crosby wrote:
Don't laugh at the ignorance on display with these questions. :)

My Windows 10 PC has an IP address of 192.168.0.x and a subnet mask of
255.255.255.0.

Does this mean I cannot "see" devices on the network with IP addresses in
the 192.168.190.x range with Advanced IP Scanner?

If I change the subnet mask to 255.255.0.0 would I then "see" these
devices? A reboot required?

What is the danger of doing so?

Thanks.

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--


*Jeff Crosby*
Senior Vice President
UniPro FoodService/Dilgard
P.O. Box 13369
Ft. Wayne, IN 46868-3369
260-422-7531
direct.dilgardfoods.com

The opinions expressed are my own and not necessarily the opinion of my
company. Unless I say so.
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