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Cisco Bug: CSCur38253 - Flexconnect mode session timeout with CCKM seeing traffic black holing

Last Modified

May 06, 2016

Products (1)

  • Cisco 5500 Series Wireless Controllers

Known Affected Releases

7.6(110.0)

Description (partial)

Symptom:
WLC/LWAP Flexconnect mode with WGB as clients under the occurrence of session timeout with authentication type EAP-TLS with CCKM enabled seeing traffic black-holing when multiple WGBs trying to renew CCKM session key at the same moment. When multiple WGB clients are trying to renew the CCKM session key at the same time one or more WGB's might experience traffic holing until the other WGB finishes its 3-way hand-shaking for CCKM session.

Conditions:
This symptom is observed on LWAP running in Flexconnect mode for the unified setup with WLC
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