3850 switch giving bus error while trying to upgrade boot loader.

[richgupt]

I was trying to upgrade boot loader for switch 3850, Looks like some parameter is not set properly and after reset it started giving below error and its not booting and not moving beyond this point.

Mainboard hardware authentication failed. Abort init ... 

?

Booting...

*** Bus Error (Load) Exception ***

PC = 0x00000000 00000000

SP = 0xffffffff bfc0dab4

Cause Reg = 0x00000000 4000801c, Status Reg = 0x00000000 504000e7

Is there a way to recover from this error or reset to factory default? It is a new box and was working fine with default image.

Would appreciate any help regarding this.

[Leo Laohoo]

That looks like a hardware issue.

[rosaho]

This discussion has been reposted from Additional Communities to the LAN, Switching and Routing community.

[richgupt]

Thanks for reposting.

[InayathUlla Sharieff]

this could be caused by a time sync issue on the switch. We can try
and manually reset this time in the boot loader and see if it clears this issue.

To do so:



1. Power off your switch. Connect to the console port of the switch. Hold the "Mode"
button and power on the switch. Continue to hold onto the button until all the amber
system LEDs turn on and remain solid. You should then see a "switch: " prompt. See the
following link:

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3650/software/release/3se/system
_management/configuration_guide/b_sm_3se_3650_cg/b_sm_3se_3650_cg_chapter_011.html#con_107
2041





2. Write the time using the following command in switch: mode, writertc <year(0-99)>
<month(1-12)> <date(1-31) <hour(0-23)> <min(0-59) <sec(0-59)>
<dayofweek(1-7)>

For example:

switch: writertc 15 1 30 <h> <m> <s> 5

If the above procedure doest work for you then please raise the RMA for the same. 

REgards

Inayath

[richgupt]

I tried the same, its not going to switch: prompt. It stuck to 

Booting...

*** Bus Error (Load) Exception ***

PC = 0x00000000 00000000

SP = 0xffffffff bfc0dab4

[huybx8401]

Dear InayathUlla Sharieff
I tried the same, its not going to switch: prompt. It stuck to
Do you have any solutions?
thanks