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Cisco Bug: CSCvh77308 - Sometimes 11r roam fails with iphone 10

Last Modified

Sep 19, 2019

Products (1)

  • Cisco 5500 Series Wireless Controllers

Known Affected Releases

8.3(134.60)

Description (partial)

Symptom:
Sometimes 11r roam fails with iphone 10

Conditions:
1) Have a wlan with FT enable, with over the ds disabled and PMF set to optional .
2) Now connected iphone 10 client  and seen client got connected fine in FT mode .
3) Have 2 AP3800s configured in local Mode .
4) Now Roam the client to target AP and seen client fails to roam and seen the following messages :

*apfMsConnTask_6: Jan 30 16:53:54.461: [PA] 54:33:cb:b2:c0:ae MIC mismatch
*apfMsConnTask_6: Jan 30 16:53:54.461: [PA] 54:33:cb:b2:c0:ae Setting client ReasonCode from (122) to (236)
*apfMsConnTask_6: Jan 30 16:53:54.461: [PA] 54:33:cb:b2:c0:ae Dropping (Re) Association Request frame as FTIE MIC validation failed for the client.
*apfMsConnTask_6: Jan 30 16:53:54.461: [PA] 54:33:cb:b2:c0:ae 11r FT MDIE verification failed on WLAN

Also sometime roaming fails without this reason ,Please see the attached capture case1 (above is case1) and case2 .

Seen in both the cases when roaming fails we see directly messages : Updating 11r vendor IE ,though in success case we get mostly :
Doing preauth for this client over the Air .
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