I'm having an issue trying to get 2 WLC 8500 to boot which have the same issue. After initially configuring the management ip, service port, etc. via serial console, saving and restarting - the boot up session hangs at the "Broadcom NetXtreme II Ethernet Boot Agent v5.2.7". I've tried power cycling both units a couple times via the front panel power button, reconfiguring the BIOS to not boot to network and select the hard drive as the first boot device, but I can't seem to get past this.
Configuration correct? If yes, system will save it and reset. [yes][NO]: yes
Please wait, initializing legacy usb devices...Done Broadcom NetXtreme II Ethernet Boot Agent v5.2.7 Copyright (C) 2000-2009 Broadcom Corporation All rights reserved.
I'm stuck at this point on both units. Seems like an issue someone must have come accross before.
Thanks for any suggestions you may have.
Update: Console is currently connected via Cyclade terminal at an off-site location. An RMA has been ordered and both old and new units will be tested onsite with a laptop serial connection and Putty next week.
As soon as I changed the USB-Serial cable converter and connect a PROLIFIC instead of the TRENDNet that I had, I could access right away the WLC 8500. I have been using the TRENDNet for a long period of time with no issues connecting to Cisco Devices so I would have to take a look on this.
I reboot completely the WLC and now I can see everything on the console connection. I am attaching to this case a brief procedure with screenshots that I made just in case that somebody else face the same problem.
Abraham is on the right track. The serial interface on these systems seems really sensitive. Once we removed the Cyclade serial connection, the 8500 had no issues booting up. I had no issues with a couple different standard USB->Serial adapters on a laptop but haven't tested any other out of band console server type appliances.