Hello,
I have run into an issue with a Nexus 5000. When trying to upgrade to the newest NX-OS (upgrading the system and kickstarters from 4.2.1.N1.1 to 5.2.1.N1.8b, in order to work with some Nexus 2232TMs), we lost power during the upgrade...the worst luck, I know.
Anyway, as of now our 5000 will not seem to boot or even POST. When power is applied, the fans spin up before returning to a low RPM, and no lights appear other than on the bottom two cross-connect and management ports, where a solid green light will turn on. No console output is given, either. My feeling is that the BIOS was corrupted when the power was lost during the upgrade, and I've tried to force it to boot to the golden BIOS with ctrl+shift+6 during boot to a console connection, but no luck there.
My understanding is that the BIOS along with the OS is kept on the flash card installed in the Nexus 5000, correct? In that case, I've located the card inside the system, but I haven't tried pulling anything apart.
As such, I'm wondering if there's a way to force or flash the BIOS chip on the Nexus 5000. Since the management port still seems to be alive (if I plug in an ethernet cable to it from my laptop, it recognizes it as being plugged in to something), but I don't know the IP of that port, is there any way to access that port and TFTP firmware onto the chip? We have another flash card in a good Nexus 5000 as well, is there a way to copy from that good card to the bad one, and fix it that way? Or will I need to figure out how to JTAG into the port on the 5000 and clear out the NVRAM to see if I can force something that way?
I know it's a tough problem, but any help will be appreciated. Thank you.
