Symptom

A Catalyst 9k switch can reload unexpectedly, creating an IOS Daemon core file.

Conditions

The crash occurs while in the process of updating QoS configuration. For example, like adding the following config: table-map CS0 default 0 policy-map Output-Policy class Output-PRIORITY priority level 1 percent 30 class Output-CONTROL bandwidth remaining percent 10 queue-limit dscp cs6 percent 100 queue-limit dscp cs7 percent 100 queue-buffers ratio 10 class Output-REALTIME-VIDEO bandwidth remaining percent 10 queue-buffers ratio 10 class Output-CRITICAL-DATA bandwidth remaining percent 10 queue-buffers ratio 10 class Output-SCAVENGER bandwidth remaining percent 1 queue-buffers ratio 5 class Output-BULK bandwidth remaining percent 35 queue-buffers ratio 35 class class-default bandwidth remaining percent 4 queue-buffers ratio 10 policy-map Output-Shape40M-remark class Output-PRIORITY police cir 12000000 conform-action transmit exceed-action set-dscp-transmit dscp table CS0 service-policy Output-Policy class class-default shape average 40000000 service-policy Output-Policy LAB-L3-1#conf t Enter configuration commands, one per line. End with CNTL/Z. LAB-L3-1(config)#interface TwentyFiveGigE2/0/1 LAB-L3-1(config-if)#service-policy output Output-Shape40M-remark

Workaround

Aside from avoiding configuration changes, no workaround is currently identified.

Further Problem Description