3750x Hangs on Boot

[campbell-d]

All,

Need some help please, I have a 3750x that hangs on boot.

Status LED blinks amber for 30 secs or so, turns green and then hangs at this point......

Using driver version 1 for media type 2
Base ethernet MAC Address: 2c:54:2d:9b:94:80
Xmodem file system is available.
The password-recovery mechanism is enabled.

makes no difference how long it is left, does not boot.

I have also tried holding down the mode button during boot, no difference.

I think the flash is corrupt.

Any suggestions?

Thanks

[Leo Laohoo]

What is the settings of your console?  Is Flow Control turned OFF?

[campbell-d]

Yes I have the Flow Control Off.

If I use a different switch it's perfectly ok, so it can't be the console settings.

[Leo Laohoo]

3750X, right?

Why not use the USB console port instead?

Sent from Cisco Technical Support Nintendo App

[campbell-d]

I have tried with the USB cable, same issue.

[Leo Laohoo]

Can you try a different computer/client?

[campbell-d]

I have also tried that, same problem :o(

[Leo Laohoo]

If you've tried every setting and different clients and you're not getting any results, then RMA the appliance.

Is this happening to this unit only or it's happening to every Cisco products?

[Mark Fisher]

Did you get anywhere with this? I have a 3750E-24PD-S doing the exact same thing. I can hold the button to interrupt the boot then do flash_init and boot and it will boot fine. Just need to be done every time.

[Leo Laohoo]

What IOS is your 3750E running, Mark?

[Mark Fisher]

I actually just thew 15.0.2-SE2 on it this morning in hopes that it would fix it.

[Leo Laohoo]

If it doesn't work, downgrade to 12.2(55)SE7.

[Mark Fisher]

15.0.2-SE2 and 12.2(55)SE7 both do the same thing. Any other ideas?

[warnesj]

I have a 3750-E that is doing the same thing.    When I power it up it, much like Duncan's, it only displays:

Using driver version 1 for media type 2

Base ethernet MAC Address: 00:22:90:28:ab:00

Xmodem file system is available.

The password-recovery mechanism is enabled.

And then hangs.  When I hold the mode button down during the boot sequence I'm able to boot the switch my manually initializing the flash and booting the switch.

Using driver version 1 for media type 2
Base ethernet MAC Address: 00:22:90:28:ab:00
Xmodem file system is available.
The password-recovery mechanism is enabled.

The system has been interrupted prior to initializing the
flash filesystem.  The following commands will initialize
the flash filesystem, and finish loading the operating
system software:

    flash_init
    boot

switch: flash_init
Initializing Flash...
mifs[2]: 12 files, 1 directories
mifs[2]: Total bytes     :    1835008
mifs[2]: Bytes used      :     757248
mifs[2]: Bytes available :    1077760
mifs[2]: mifs fsck took 0 seconds.
mifs[3]: 0 files, 1 directories
mifs[3]: Total bytes     :    3932160
mifs[3]: Bytes used      :       1024
mifs[3]: Bytes available :    3931136
mifs[3]: mifs fsck took 1 seconds.
mifs[4]: 5 files, 1 directories
mifs[4]: Total bytes     :     262144
mifs[4]: Bytes used      :       9216
mifs[4]: Bytes available :     252928
mifs[4]: mifs fsck took 0 seconds.
mifs[5]: 5 files, 1 directories
mifs[5]: Total bytes     :     262144
mifs[5]: Bytes used      :       9216
mifs[5]: Bytes available :     252928
mifs[5]: mifs fsck took 0 seconds.
mifs[6]: 443 files, 8 directories
mifs[6]: Total bytes     :   57409536
mifs[6]: Bytes used      :   18982400
mifs[6]: Bytes available :   38427136
mifs[6]: mifs fsck took 13 seconds.
...done Initializing Flash.

switch: boot
Loading "flash:/c3750e-ipbasek9-mz.122-55.SE4/c3750e-ipbasek9-mz.122-55.SE4.bin"...@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

And the boot sequence finishes just fine.

I'm suspecting a corrupt flash too so I performed an fsck on the flash and everythignt reported back okay.  I've even tried re-applying the software through the archive download-sw command just in case that re-writes the boot sector of the flash but it had no affect.  So I'm to the point of re-formating the flash and seeing if that does anything.  I'll report back if it helps.

[Mark Fisher]

Did anyone get anywhere with this other than RMA?