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Cisco Bug: CSCuw31820 - WLC CP crash due to System Crash for apfMsConnTask_6

Last Modified

May 29, 2018

Products (1)

  • Cisco 5500 Series Wireless Controllers

Known Affected Releases

7.6(130.214) 8.0(110.18)

Description (partial)

Symptom:
WLC CP crash due to System Crash for apfMsConnTask_6, and from the crashfile CPU task summary, this the only task that was definitely consuming the entire CPU until it crashed it:

apfMsConnTask_6    (175/ 32)    RR        896308         1395      98 (  0/ 98)%  98   7   T 290

Summary:   total task CPU Usage 98%  (total CPUs 8)
   CPU load 12%/1%
   Individual CPU Usage 0%/1%, 0%/0%, 0%/0%, 0%/0%, 20%/1%, 0%/1%, 0%/1%, 78%/2%

Conditions:
- 8500 in HA AP SSO for Service-Provider setup managing mainly Mesh APs.
- Number of APs: 3360
- Number of WLANs: 4 (one for PMIPv6)
- Number of Active Clients: More than 15100
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