3650 switch not getting post

[Ibrahim Bhuiyan]

I have a WS-c3650-PS-E switch. The "system" and "active" LED are solid amber and switch not getting POST. I have tried several time to go to rommon mode by pressing "Mode" button after restarting but not getting rommon mode also.

Note: After starting shown the below log:

"Booting...Initializing RAM+++++++@@@@@@@@...+++++++++++++++++++++++++++@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@done.Memory Test Pass! Base ethernet MAC Address: 00:35:1a:70:07:00 Interface GE 0 link down***ERROR: PHY link is down".
But not getting POST. The switch gone hold at this position. What is the reason for it? And how can I resolve it?

[Mark Malone]

Hi can you please post the full output from the switch console as its booting up and failing , there will be information usually in the output and it may suggest what is wrong , there can be multiple reasons from softwrae to hardwrae that can prevent it booting

is this a new switch or a switch that was up and working that failed

it sounds as if the board may have failed on the switch is it under support

[Ibrahim Bhuiyan]

Only this output has shown. then system LED has gone amber and switch not getting POST. Nothing is more shown.

No this was working switch. and failed at work.

[Ibrahim Bhuiyan]

This was working switch. Failed at work.

[Mark Malone]

If thats all you got you have limited options left , you cant get into rommon to reset it or add new software or get it to boot say from usb so  there is no access to do anything if the mode button isnt working , you need to RMA the switch get it replaced unfortunately

[Ibrahim Bhuiyan]

Is it hardware issue or IOS crash? When system LED is solid amber?

[Mark Malone · Accepted solution]

If its failing POST its most likely hardware , there is bugs like below that do cause failed reboots but they always pass POST first , if this was working and it failed and now wont even get to rommon , the actual board is probably gone internally , usually when they fail POST theers no coming  back without getting it repolaced

Cisco Bug: CSCva30394 - Cat3650 may fail to boot on reload

Last Modified

Aug 07, 2017

Products (1)

• Cisco Catalyst 3650 Series Switches

Known Affected Releases

15.2(2)E

Description (partial)

Symptom:
The switch will boot loop with the following messages:

All packages are Digitally Signed
Starting System Services


Front-end Microcode IMG MGR: found 1 microcode images for 1 device.
Image for front-end 0: /tmp/microcode_update/front_end/fe_type_8_1

Front-end Microcode IMG MGR: Preparing to program device microcode...
Front-end Microcode IMG MGR: Preparing to program device[0]...83584 bytes.
% Front-end Microcode IMG MGR: address 0, Could not enable sys_poll


% Front-end Microcode IMG MGR: unable to program device: 0
% Front-end Microcode IMG MGR: malformed microcode cache
Mar 14 16:39:02 %PLATFORM_MGR-1-PLATMGR_INIT_FAIL: Platform ManaMar 14 16:39:02 %IOSXE-3-PLATFORM: process sysmgr: Service [platform_mgr] pid:[5693] terminated abnormally [6].
Mar 14 16:39:02 %STACKMGR-1-RELOAD: Reloading due to reason
Mar 14 16:39:02 %IOSXE-2-PLATFORM: process ng_dumper: Process platform_mgr: terminated abnormally.
Mar 14 16:39:03 %IOSXE-2-PLATFORM: process platform_mgr: ===================== Exception Data ====================
Mar 14 16:39:03 %IOSXE-2-PLATFORM: process platform_mgr: Exception in 'platform_mgr' with Signal=SIGABRT(6)
Mar 14 16:39:03 %IOSXE-2-PLATFORM: process platform_mgr: Frame Pointer=0x7FA52660, Program Counter=0x2BD583D0
Mar 14 16:39:03 %IOSXE-2-PLATFORM: process platform_mgr: Thread ID=5693: -Traceback= 1#8930076019abbffd5b211609e1fb1414 pthread:2BD46000+123D0
Mar 14 16:39:03 %IOSXE-2-PLATFORM: process platform_mgr:

[Ibrahim Bhuiyan]

Thank you.
But I have got only the below message, which I already shared.
"Booting...Initializing RAM+++++++@@@@@@@@...+++++++++++++++++++++++++++@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@done.Memory Test Pass! Base ethernet MAC Address: 00:35:1a:70:07:00 Interface GE 0 link down***ERROR: PHY link is down".
Only this message shows.
Not go into rommon or POST.

[Mark Malone · Accepted solution]

exatctly so the switch cannot  go through hardware POST so it needs to go to RMA through Cisco and they will replace it for you under support through your vendor you purchased it off , if its not  under support you will have to face the cost of buying/replacing with another one

POST Test is a hardware test perfomred to make sure switch is operating correctly,  if its failing that the switch needs to be checked for failed components or replaced , theres not much you can do at user level to fix this

[c.pineda]

hi,

happened to me with a 3850 of 24 ports, the device had the same error, so as the last attempt to de-energize completely and then turned it on again, the computer turned on, normally, of course it did not restart, we are expecting to have with a stock device to carry out the process again, but what I wanted to comment on is that if the equipment returned to start correctly. I left here the error that threw me when I started.

% Front-end Microcode IMG MGR: unable to program device: 0
% Front-end Microcode IMG MGR: malformed microcode cache
Mar 14 16:39:02 %PLATFORM_MGR-1-PLATMGR_INIT_FAIL: Platform ManaMar 14 16:39:02 %IOSXE-3-PLATFORM: process sysmgr: Service [platform_mgr] pid:[5693] terminated abnormally [6].
Mar 14 16:39:02 %STACKMGR-1-RELOAD: Reloading due to reason
Mar 14 16:39:02 %IOSXE-2-PLATFORM: process ng_dumper: Process platform_mgr: terminated abnormally.
Mar 14 16:39:03 %IOSXE-2-PLATFORM: process platform_mgr: ===================== Exception Data ====================
Mar 14 16:39:03 %IOSXE-2-PLATFORM: process platform_mgr: Exception in 'platform_mgr' with Signal=SIGABRT(6)
Mar 14 16:39:03 %IOSXE-2-PLATFORM: process platform_mgr: Frame Pointer=0x7FA52660, Program Counter=0x2BD583D0
Mar 14 16:39:03 %IOSXE-2-PLATFORM: process platform_mgr: Thread ID=5693: -Traceback= 1#8930076019abbffd5b211609e1fb1414 pthread:2BD46000+123D0
Mar 14 16:39:03 %IOSXE-2-PLATFORM: process platform_mgr:

[Leo Laohoo]

Create a new thread with the complete boot-up output.
This is totally different.

[Leo Laohoo]

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@Ibrahim Bhuiyan wrote:

Booting...Initializing RAM+++++++@@@@@@@@...+++++++++++++++++++++++++++@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@done.Memory Test Pass! Base ethernet MAC Address: 00:35:1a:70:07:00 Interface GE 0 link down***ERROR: PHY link is down". 

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Judging from this, I'd say the flash memory is either dislodged or faulty.  Get the appliance RMA-ed.

[clagarrigue]

Hii, for some users have the same problem, in my case are cisco 3850, the solution (maybe for you) is open the switch and see if button mode are stuck, in my case solder new button and work like a charm.