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Cisco Bug: CSCuq48043 - IPv6 forwarding halts; broadcast queue full

Last Modified

Jul 01, 2016

Products (1)

  • Cisco 5500 Series Wireless Controllers

Known Affected Releases

7.4(100.0) 8.0(100.0) 8.1(1.57)

Description (partial)

Symptom:
1. A WLC may stop forwarding all IPv6 traffic.  At that time, messages similar to the following may appear in the msglog:

*broffu_SocketReceive: Nov 09 22:07:18.829: #DATAPLANE-3-DP_MSG: broffu_fp_dapi_cmd.c:3613 FP0.00:(754330)[cmdAddIpv6:3658]failed to find ipv6  2001:0630:0301:9116:a0c8:7d44:717d:020d  vlan 123

*SISF BT Process: Nov 07 04:46:19.174: #SISF-3-INTERNAL: sisf_shim_utils.c:316 Internal error, Bogus queue ref count

At that time, the "show queue-info" command (7.5 and above) will show that the BCAST-Q is full.

2. A WLC may emit messages similar to the following, when authenticating/deauthing a client:

IPv6_Msg_Task: Dec 11 18:35:24.984: #APF-1-MOBILE_IPv6_ADD_TO_CLIENT_FAILE: apf_ms.c:5353 Could not add IPv6 address to Client Entry. Could not add IPv6 address to Client. Mobile:00:11:22:33:44:55 w/ IP fedc:a098:7654:3210:1234:5678:90ab:cdef.

3.

Conditions:
IPv6 is enabled.
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