the switch bootet and work fine (all port are o.k. and data were transfered) - here are the LED-status: PWR-LED lits green / CPU-LED does ́nt lit / RPS-LED does ́nt lit / FAN-LED does ́nt lit
thanks a lot!
Do you use the correct cable to access the console - does it work on another 800 switch ?
It looks like you have got a switch with a defective COM port and LED. Device needs to be replaced. To generate an RMA go to https://extranet.extremenetworks.com/mysupport/ocm/pages/rma.aspx and fill out the form with shipping and product information and we will take care of it for you.
So I used Wireshark and listened on ports to see if an IP address was sent by the switch.
And that's how I got the IP address of the device.
But for that, you'll have to be sure that one of the ports is in the management VLAN.
options are limited to the suggestion by Nicolas - assuming passwords are available.
The switch should arp for a gateway soon enough. If no gateway is configured, try a link bounce to generate trap or syslog. Try a port scan/discovery security tool.
(Note the host management VLAN caveat)
If no IP management is available and console is disabled, management is not recoverable.
Investigating other options for your 800 turned out to be counterproductive.
* Management lockout is covered under neither warranty nor contract.
* I voided one of our lab warranties trying to locate a battery. (which I could then warn you not remove). No help here. I found none.
CPU led off indicates POST passed and console off. (per quickstart)
a bit vague given the problem as described.
found this to mean
* Hardware tests passed at last boot. Systems and ports OK.
* No active console management present.
When logged in with proper cred's led is green. 'console active'.