Invalid IP configured in Enterasys VH-2402S

[Dale]

I have acquired an Enterasys VH-2402S switch. I am unable to communicate with it using console management port via puTTy (black screen/no response) or any other method. I had no idea of the IP configured in this switch. After some thought, since I acquired this switch from a network guy, who also did not know the IP, suggested I try a range of IPs in the 172.22.xx.xx range since it came from his company. Using AdvanceIP Scanner I was able to determine the configured IP address of the switch is 172.22.xx.255. Wow. This is an invalid IP I'm sure, and is preventing me access to it via CLI / ethernet cable. How do I gain access to this switch? I asked that network guy and just got a shrug and statement that I probably can't. It's almost like he knew it and wasn't bothering with it... Anyway, any ideas on how I can get access to this switch to change the IP to make the switch useful? Thnks!

[Dale]

Yes. I did try this baud rate. But I have tried so many things now, I think I need to start writing some stuff down... I will try again

[Ronald_Dvorak]

So it's 19200 baud instead of the 9600 that you've used before.

[Dale]

Because of the Mask setting I was told from the network guy. 255.255.254.0. I confirmed the IP range they used 172.22.34.0/172.22.35.xxx. I don't know nmap but am checking it out now. Attached is how I determined the IP of the switch. Strangely it says the manufacture of the switch is Dell!

[Ronald_Dvorak]

I'm pretty sure that that is the MAC of the notebook that was used for the test.
.255 is the broadcast address in the /24 network

[Robert_Cummins]

Why do you think a 172.22.XXX.255 address is an invalid address?
With regards to gaining access - what ports are open on the switch? Since telnet and ssh are common remote access programs, what's returned from nmap -p 22,23

?