Device Discovery on Linux

[Ed_]

I have an RT-AC3100 running Merlin. It's operating in media bridge mode. I'm running Linux. I need to find the IP of the router.

Asus provides a "device discovery" utility for Windows. What's the solution for Linux?

My best guess was "nmap --open -T4 -p 80 10.43.14.0/24", but that just gives me the router I'm bridging to.

 

[ColinTaylor]

Look in the DHCP log of the main router to find what IP address it was given.

 

[Ed_]

I don't have access to the main router.

 

[daviworld]

I don't have access to the main router.

I'm assuming your Linux machine is connected to the router, but you don't have access to the router for whatever reason.

What you're looking for is the "arp" command if you know the router's mac address or you know all the IP's in your network. You can cross reference the mac addresses and the the IP address.

 

[martywd]

@Ed_

From your linux machine try using 'nmap' to scan for ALL devices on your subnet, i.e., in your stated case: 10.43.14.0/24 .

nmap -sn 10.43.14.0/24

or

sudo nmap -sn 10.43.14.0/24

This should give you a complete list of devices on the subnet. From there you ought to be able to figure out the IP of your RT-AC3100 ?
.