Cisco Bug: CSCup03142 - 5508 WLC crash due to mmListen when in same mobility group as of 8510
Feb 26, 2018
- Cisco 5500 Series Wireless Controllers
Known Affected Releases
Symptom: mmListen task goes high (Up to 98%). dtlArpTask is also high in certain cases . Mobility flap messages seen in the crash logs. No members in Mobility group 13 (Four 5508's and rest are 8510's ). Common mobility logs seen in the crash file ? *mmMobility: May 08 17:35:41.124: #OSAPI-4-MUTEX_LOCK_FAILED: osapi_sem.c:1150 Failed to acquire a mutual exclusion object. invalid(NULL) pointer passed. *mmMobility: May 08 17:35:41.124: #MM-4-MEMBER_DOWN: mm_heartbeat.c:445 Control path to mobility member 220.127.116.11 is DOWN. *mmMobility: May 08 17:49:11.039: #OSAPI-5-MUTEX_UNLOCK_FAILED: osapi_sem.c:1031 Failed to release a mutual exclusion object. invalid(NULL) pointer passed. *mmListen: May 08 17:32:31.404: #MM-6-MEMBER_UP: mm_heartbeat.c:2182 Control path to mobility member 18.104.22.168 is UP/DOWN . *mmMobility: May 08 17:32:10.800: #ETHOIP-4-PING_TRANSMIT_FAILED: ethoip_ping.c:240 send_eoip_ping: Failed to tx Ethernet over IP ping to 22.214.171.124, rc=5. *mmMobility: May 08 17:32:10.800: #ETHOIP-6-ARP_TO_RESOLVE_GW: ethoip_ping.c:107 Cannot reach 126.96.36.199, no ARP entry for next-hop gw 188.8.131.52 so tx ARP req Common ARP messages seen in the crash file - dtlDataLowTask: May 08 17:26:03.878: #DTL-6-ARPDATA_QUEUE_OVERLOAD: dtl_arp.c:2819 ARP input q exceeds limit. Current val = 50 *dtlDataLowTask: May 08 17:26:03.878: #LOG-6-Q_IND: dtl_arp.c:2819 ARP input q exceeds limit. Current val = 51 [...It occurred 172 times.!] Conditions: SP Wifi Customers . 5508 WLC's are present in same mobility group as of 8510 . Mobility messaging is Unicast .
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