atcomsystems.ca/forum Forums VOIP Phones & IP PBX Networking Determining the IP address of a switch?

I suppose I can default the switch but this thing has got me wondering if there's a way to determine IP addresses of a particular device on a network

You might try this: advanced ip scanner

https://www.radmin.com/products/utilities/ipscanner.php

What model switch?

The low end Linksys switches are unmanaged, don't speak IP, and don't have an IP address.

The managed switches generally have a serial port that you can connect to, assuming this it isn't password protected, which would allow you to find the IP address, if one is configured.

Thanks TDS. That's exactly what I was looking for. :thumb:

I'll have to get the model number of the switch tantivity. I'll try to go by today and get it.

Edit: I went by today and I was wrong about the brand of the switch. It's a Netgear Prosafe FS116. Which according to my research is a low end product so I don't think there is any kind of IP control in it.

that switch is a dumb one. completely unmanaged.

The IP scanner is nice, but it wont let you find all of the devices on a network, just the ones responding to PING. All the scanner does is ping every IP in a range that you provide. It won't let you find devices configured for an IP outside the range you specify. The best way to find all types of devices using all protocol types (provided they are sending out something) is with a sniffer or packet capture device. The better ones are hardware based and will show all packets. The linix ones for the most part wont catch the error/runt/collision packets that will indicate a problem with the network unless the card it is working with can be set not to filter them at the hardware level prior to passing them up the stack to the application. You may get a flag that it saw an error or runt, but not the content which lets you find the problem.

edit was to change a wrong word.

Oh and if you turn on DHCP, make it for a range that doesn't have static addresses. the router may not know they are there if it is rebooted and hasn't yet seen traffic for them if they are off at the time. This can lead to IP conflicts.

Thanks for the info. I've used sniffers on my wireless network when I thought someone was hacking into it but I never thought of one on a wired network.