asw-c-eqiad have rebooted on its own 4 times so far:
```
May 16 16:40:35 FPC 8 removed
May 16 19:05:43 FPC 8 removed
May 16 20:27:16 FPC 8 removed
May 16 21:37:02 FPC 8 removed
```
this happen after logs indicating PEM1 flapping:
`send: red alarm set, device Power Supply 41, reason FPC 8 PEM 1 is not powered`
Current theory is that PEM0 is reporting as healthy but is not, and as PEM1 started flapping, is causing the switch member to reboot.
Production hosts on the switch stack:
```
cp1099
cp1055
cp1054
cp1053
cp1052
cp1051
cp1050
cp1049
cp1048
cp1047
cp1046
cp1045
```
> paravoid> 2/4 of misc, 4/8 of text and 4/11 of upload are there.
The reboot also caused the following alarm:
```
Class Description
Major Upgrade bank is empty or corrupted for FPC 8, please do standard upgrade sequence
```
Fix would mean re-applying Junos 11.4R6.5 and restarting the switch member. I don't believe the alarm currently causes production issue (I saw switches running fine for a long time with that error), but the fix would cause ~10-20min downtime.
Suggested 1st step fix for the reboot issue is to replace PEM1 and PEM0.