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Cisco Bug: CSCvu57682 - ASR1001-X 16GB: Kernel crashes repeatedly after upgrading from 16.12.2 to 17.2.1

Last Modified

Oct 07, 2020

Products (1)

  • Cisco ASR 1000 Series Aggregation Services Routers

Known Affected Releases

17.2.1r

Description (partial)

Symptom:
This bug only impact ASR1001-X, ASR1001-HX, ASR1002-HX routers.  Router may crashed after a couple hours after upgraded from 16.12.2 to 17.2.1. It has multiple kernel crash files, routers were in booting loop and were recovered by cold start.

device#dir bootflash:core
Directory of bootflash:/core/

753666  -rw-                1   Jun 5 2020 15:11:06 +02:00  .callhome
196612  -rw-              945   Jun 4 2020 11:41:52 +02:00  kernel.rp_1NG_0_inv_log_20200604094108.txt
20 13:17:49 +02:00  kernel.rp_1NG_0.core.TEMP_IN_PROGRESS.txt

6605541376 bytes total (0 bytes free)

device#show platform 
Chassis type: ASR1001-X           

Slot      Type                State                 Insert time (ago) 
--------- ------------------- --------------------- ----------------- 
0         ASR1001-X           ok                    01:34:36      
 0/0      BUILT-IN-2T+6X1GE   ok                    01:33:06      
R0        ASR1001-X           ok, active            01:34:36      
F0        ASR1001-X           ok, active            01:34:36      
P0        ASR1001-X-PWR-AC    ok                    01:33:59      
P1        ASR1001-X-PWR-AC    ok                    01:33:58      
P2        ASR1001-X-FANTRAY   ok                    01:34:01      

Slot      CPLD Version        Firmware Version                        
--------- ------------------- --------------------------------------- 
0         14041015            16.9(4r)                            
R0        14041015            16.9(4r)                            
F0        14041015            16.9(4r)                            


device#sh version 
Cisco IOS XE Software, Version 17.02.01r

Conditions:
The issue occurred on ASR1K routers after upgraded from 16.12.2 to 17.2.1. The reboots started a couple of hours after the upgrade was completed. 

Several routers displayed the same behavior. There are some lab routers that were upgraded with the same image, and these don't show any behavior. The only difference between these and the ones that crashed is that the first ones had 16Gb of memory, while the ones from the lab had 32Gb.
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