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C3750G-24T [12.2(35)SE5] reboot loop

After a powerfailure 1 of our 2 stacked switches is in an endless loop of rebooting. I attached a part of the boot messages,

also I attached the last logfiles.

I am not an experienced user, but I found 2 entries which are not good and probably cause the problem.

Initializing flashfs...
flashfs[1]: 787 files, 9 directories
flashfs[1]: 0 orphaned files, 0 orphaned directories
flashfs[1]: Total bytes: 15998976
flashfs[1]: Bytes used: 15998976
flashfs[1]: Bytes available: 0
flashfs[1]: flashfs fsck took 4 seconds.
flashfs[1]: Initialization complete....done Initializing flashfs.
Checking for Bootloader upgrade.. not needed

%Crashinfo not stored: cannot open "flash:/crashinfo/crashinfo_262".

POST: CPU MIC register Tests : Begin
POST: CPU MIC register Tests : End, Status Passed
POST: PortASIC Memory Tests : Begin
POST: PortASIC Memory Tests : End, Status Passed
POST: CPU MIC interface Loopback Tests : Begin
POST: CPU MIC interface Loopback Tests : End, Status Passed
POST: PortASIC RingLoopback Tests : Begin
POST: Failed Packet Receive asic 4 queue 0
POST: PortASIC RingLoopback Tests : End, Status Failed
POST: port-asic ring loopback test failed
driver class subsystem initialization failed

The first issue is probably solved by deleting a lot of crashinfo files, probably the second issue causes the

crashinfo files.

Is there anything I can do to solve this or is this a hardware problem?

Thanks for the replies. Indeed the hardware was defective and replaced.

Message was edited by: Stefan Tangenberg

Hall of Fame Super Silver

Re: C3750G-24T [12.2(35)SE5] reboot loop


It looks like a hardware problem to me (especially the error messages dealing with asics). I would suggest that you open a case with Cisco TAC about this.



Cisco Employee

Re: C3750G-24T [12.2(35)SE5] reboot loop


You have a POST failure. Most likely this is an indication that the hardware

is faulty. If you have support contract or if the device is under warranty,

please contact Cisco TAC and open a case to get the hardware replaced.

Hope this helps.