3750X-48T-S -> Error: Unexpected exception to CPUvector 2000, PC = 26BDE88

[ohhmillecisco]

Hello

We have a WS-3750X-48T-S V02 with IOS v. 12.2 (55) SE3 universal ! (c3750e-universalk9-mz.122-55.SE3 )

Now i have updated to version 15.0(2)SE1 and get the following error message at boot. The boot repeats continuously. Boot-Loop!

-----------SNIP-----------
*Mar  1 00:00:06.627: Read env variable - LICENSE_BOOT_LEVEL =
Mar 30 01:27:39.728: %IOS_LICENSE_IMAGE_APPLICATION-6-LICENSE_LEVEL: Module name = c3750x Next reboot level = ipbase and License = ipbase
Mar 30 01:27:40.273: %CRYPTO-0-SELF_TEST_FAILURE: Encryption self-test failed (Software self-integrity test)
Mar 30 01:27:40.692: %CRYPTO-0-SELF_TEST_FAILURE: Encryption self-test failed (RBG: unable to initialize rbg)
Mar 30 01:27:40.692: %CRYPTO-0-SELF_TEST_FAILURE: Encryption self-test failed (SP 800-90 DRBG)

: Unexpected exception to CPUvector 2000, PC = 26BDE88
-Traceback= 0x26BDE88z 0x26BDE88z 0x64CAC8z 0x1C43C0Cz 0x1C43DCCz 0x1C43EE8z 0x50BCD8z 0x50C14Cz 0x26BF144z 0x26B9898z

: Unexpected exception to CPUvector 2000, PC = 1C8338C
-Traceback= 0x1C8338Cz 0x1EA61C4z 0x26BF144z 0x26B9898z

----------------SNIP---------------------

what means the error message? What can i do?

Thanks und best regards
Mille

[Leo Laohoo]

Unless you have a specific feature found only in all the sub-train of 15.0(1)SE, I'd strongly recommend you stay as far away from this version as possible.  The most stable IOS I've used, so far, is 12.2(55)SE7.

Otherwise, if you need something in 15.0, try (at your own risk) IOS version 15.0(2)SE2. 

[InayathUlla Sharieff]

HI Sebastian,

The error messages that you are getting appear during initialization period:

Mar 30 01:27:40.273: %CRYPTO-0-SELF_TEST_FAILURE: Encryption self-test failed (Software self-integrity test)

Mar 30 01:27:40.701: %CRYPTO-0-SELF_TEST_FAILURE: Encryption self-test failed (RBG: unable to initialize rbg)

Mar 30 01:27:40.701: %CRYPTO-0-SELF_TEST_FAILURE: Encryption self-test failed (SP 800-90 DRBG)

And suggest either image corruption or hardware failure.

Hence our action plan would be first on the software.

As suggested by Leo kindly try to upload the image 12.2(55)SE7 or SE8 which are quite stable and good release on to the device and that should solve your issue.

HTH

Regards

Inayath

Please rate useful posts and remember to mark any solved questions as answered. Thank you.

[Leo Laohoo]

upload the image 12.2(55)SE7 or SE8

Inside information????   SE8????

[InayathUlla Sharieff]

OOPs sorry ....no SE8 as of now.

Please upgrade to 12.2(55) SE7  release.

Regards

Inayath.

[Leo Laohoo]

LOL!

I was going to wait for your response as to the release date. 

[ohhmillecisco]

Thanks for your answers.

This was the second switch 3750 with version 02. In both experiments, I had no chance to install a 15.x-Version. Most of the 12.x-Version run without problems.

At least our supplier changed the switch and now we have a switch with version 03, which hopefully runs without problems.

But i can´t understand, why the 15.x-Versions of IOS doesn´t run on old versions of the Switch?!? Is there an explanation for this.

best regards from hamburg, germany

[Leo Laohoo · Accepted solution]

But i can´t understand, why the 15.x-Versions of IOS doesn´t run on old versions of the Switch?!? Is there an explanation for this.

Yes.  Two, and they are:

1.  If your legacy 3750/3750G only has 24 mb flash, then the highest IOS version you can run is 12.2(55)SE-train.  You will not be able to run 12.2(58)SE nor the 15.0 because the IOS file sizes (BIN file alone) won't fit.

2.  Bugs.  Lots of bugs in the IOS versions I've mentioned. 

[ohhmillecisco]

Hi Leo

Thanks for your answer. That seems logical.

Today arrives a new 3750X in Version 03. I think, that we have no more further problems

Thanks und kind regards from Hamburg

Sebastian

[InayathUlla Sharieff]

Hi Sebastian,

You are good to go then. Can you please rate the respective posts and close this thread ,so that others in case face the same issue they may be benifited with the same.

Thanks

Inayath

*Plz rate all usefull posts.