C3750E switch Failed to send hrpc non blocking message

[mike.mike]

Hi,

I have a question about C3750E switch.

IOS image :c3750e-universalk9-mz.150-2.SE4.bin

Receive a lot of log event about" Failed to send hrpc non blocking message".

I have seen some related information.

ex.

https://community.cisco.com/t5/switching/cat-3750-failed-to-send-hrpc-non-blocking-message/m-p/1892253#M208446

https://community.cisco.com/t5/switching/3750x-failed-to-send-hrpc-non-blocking-message/td-p/2300551

But the status is different.

Does anybody have some idea what the cause for this message could be and/or how to track it down?

Thanks

Mike

[Leo Laohoo]

Reboot the switch/stack or upgrade the firmware.

[mike.mike]

Hi Leo,

Due to it's production enviroment it is not allowed reboot switch/stack

if i upgrade the firmware which verison should i choose ?

What else might cause this log and is there any solution without upgrade and reboot ?

Thanks

[balaji.bandi · Accepted solution]

i would investgate on the Physcail cables if any issue with fibres ? or any other patches.

still not solved, then  as suggested upgrade and test ( i know given the situation you can not reboot) - if you like to be pro-active then explian management before it becocme disaster and service interuption, go with Maintenance window and upgrade.

Cisco Star image  - Release 15.2.4E10 MD

Read the realse notes

backup the config out of the box.

make backup plan in case of any issue arrises due to upgrade.

[mike.mike]

Hi BB

Thanks a lot for reply.

But I should find the cause of log without changing any settings, including the fiber.

Have any official information for that explains the problem caused by the version or fiber?
How do I know which fiber is the problem?

Thanks.

[balaji.bandi]

At this stage, we can only recommend based on the information and our experience in the field.

[Leo Laohoo]

The latest 15.0(2)SE train is not bad. 

Agree with @balaji.bandi and the latest 15.2(4)E is also good.