Cisco Bug: CSCuq33844 - WLC does not respond to data channel keep alive
Sep 12, 2019
- Cisco 5500 Series Wireless Controllers
Known Affected Releases
Symptom: Data channel with other WLC will intermittently flap. Conditions: IPv6 enabled on WLC or the WLC has unnecessary vlans allowed on the trunk links to it. Both of the above can cause unnecessary huge traffic to WLC. Following message might come up in message logs/syslogs of the affected WLC:- *ipv6SocketTask: Aug 01 20:17:15.238: #IPV6-3-PKT_SEND_ERR: ipv6_net.c:860 Failed to send packet to SISF Switcher.
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Bug Details Include
- Full Description (including symptoms, conditions and workarounds)
- Known Fixed Releases
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