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Cisco Bug: CSCvv11509 - Command "debug dot11 client rate" shows legacy Tx/Rx data rates for 11ax clients

Last Modified

Aug 24, 2020

Products (1)

  • Cisco Aironet 1850 Series Access Points

Known Affected Releases

8.10(128.162) 8.10(138.63)

Description (partial)

Pre-FCS

Symptom:
Recently, the debug was implemented to 9130 APs. However, both 9120 and 9130 APs show the same behaviour of the debug working fine for 11ac clients displaying proper rate details but if clients are connected at 11ax, only legacy data rates are displayed. Example:

11ac client
AP-9130AXI-RIDUARTE
#Jul 17 05:04:50 kernel: [*07/17/2020 05:04:50.9504] D4:38:9C:05:FA:BE          0          0 VHT-80,2SS,MCS5,SGI,BF(520)      VHT-80,2SS,MCS6(526)   -53    54          0
Jul 17 05:04:51 kernel: [*07/17/2020 05:04:51.9513] D4:38:9C:05:FA:BE          0          0 VHT-80,2SS,MCS5,SGI,BF(520)      VHT-80,2SS,MCS6(526)   -53    54          0
Jul 17 05:04:52 kernel: [*07/17/2020 05:04:52.9563] D4:38:9C:05:FA:BE          0          0 VHT-80,2SS,MCS5,SGI,BF(520)      VHT-80,2SS,MCS6(526)   -53    54          0

11ax client
AP-9130AXI-RIDUARTE#
Jul 17 05:05:30 kernel: [*07/17/2020 05:05:30.9645]                MAC    Tx-Pkts    Rx-Pkts             Tx-Rate(Mbps)             Rx-Rate(Mbps)  RSSI   SNR Tx-Retries
Jul 17 05:05:30 kernel: [*07/17/2020 05:05:30.9645] F6:F7:36:07:83:0F          0          0                        10                        11   -55    52          0
Jul 17 05:05:31 kernel: [*07/17/2020 05:05:31.9661] F6:F7:36:07:83:0F          0          0                        10                        11   -55    52          0
Jul 17 05:05:32 kernel: [*07/17/2020 05:05:32.9664] F6:F7:36:07:83:0F          0          0                        10                        11   -55    52          0

Conditions:
9115/9117/9120/9130 APs
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