The LED indicators show what they should show normally. For the system LED blinking green in the POST process and solid green is operating normally. For the stack green means the stack ports are operating. If you are on the console does anything show during post? Did these all fail at the same time?
Console (either via direct physical terminal or via CMC console (connect switch-x) shows no activity at all -- ie no terminal output before, during or after boot seems to complete.
Testing against known working switches modules with the same connection method work fine, full boot cycle shown on the terminal)
Since I "inherited" these servers, uncertain whether they all failed at the same time.
In that case there isn’t a way for us to push new firmware onto the switches if we can’t even get to the boot menu to use xmodem.
We experienced the same problem running CMC Version 5.22 upgrading to 6.00. Our CBS3130G redundant switches via stack cable became unresponsive.
We had to manually run Firmware update via. RACADM FWUPDATE utility.
The CMC shows the correction version of firmware (6.0). The switches show a status of healthy. However, both switches are now completely unresponsive with a console cable, during POST boot process, and everywhere in between.
All our servers are hard down because the chassis and switch blades are not communicating. This has become an expensive nightmare which has cost us customers!