Question on scan results from Aruba AP

Ben Greear greearb at candelatech.com
Thu Feb 12 18:36:51 EST 2015


Someone was connecting our ath10k station to their AP, and it seems the
station only does '/n', even though AP is supposed to be doing /AC.

The AP is an Aruba IAT-225, and it's scan results are below.

I am guessing the problem is in the 'VHT Operation' section?

Or, does this scan actually look valid (and so problem may be on
the station?)


BSS XXXXX(on sta100)
	TSF: 60314016 usec (0d, 00:01:00)
	freq: 5200
	beacon interval: 100 TUs
	capability: ESS SpectrumMgmt (0x0101)
	signal: -26.00 dBm
	last seen: 6 ms ago
	Information elements from Probe Response frame:
	SSID: candela_test
	Supported rates: 6.0* 9.0 12.0* 18.0 24.0* 36.0 48.0 54.0
	Country: CA	Environment: Indoor/Outdoor
		Channels [36 - 48] @ 17 dBm
		Channels [52 - 64] @ 24 dBm
		Channels [149 - 165] @ 30 dBm
	Power constraint: 0 dB
	TPC report: TX power: 22 dBm
	BSS Load:
		 * station count: 0
		 * channel utilisation: 0/255
		 * available admission capacity: 31250 [*32us]
	HT capabilities:
		Capabilities: 0x9ad
			RX LDPC
			HT20
			SM Power Save disabled
			RX HT20 SGI
			TX STBC
			RX STBC 1-stream
			Max AMSDU length: 7935 bytes
			No DSSS/CCK HT40
		Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
		Minimum RX AMPDU time spacing: 4 usec (0x05)
		HT RX MCS rate indexes supported: 0-23
		HT TX MCS rate indexes are undefined
	HT operation:
		 * primary channel: 40
		 * secondary channel offset: no secondary
		 * STA channel width: 20 MHz
		 * RIFS: 1
		 * HT protection: no
		 * non-GF present: 0
		 * OBSS non-GF present: 0
		 * dual beacon: 0
		 * dual CTS protection: 0
		 * STBC beacon: 0
		 * L-SIG TXOP Prot: 0
		 * PCO active: 0
		 * PCO phase: 0
	VHT capabilities:
		VHT Capabilities (0x0f9a5992):
			Max MPDU length: 11454
			Supported Channel Width: neither 160 nor 80+80
			RX LDPC
			TX STBC
			SU Beamformer
			SU Beamformee
			MU Beamformer
			MU Beamformee
		VHT RX MCS set:
			1 streams: MCS 0-9
			2 streams: MCS 0-9
			3 streams: MCS 0-9
			4 streams: not supported
			5 streams: not supported
			6 streams: not supported
			7 streams: not supported
			8 streams: not supported
		VHT RX highest supported: 0 Mbps
		VHT TX MCS set:
			1 streams: MCS 0-9
			2 streams: MCS 0-9
			3 streams: MCS 0-9
			4 streams: not supported
			5 streams: not supported
			6 streams: not supported
			7 streams: not supported
			8 streams: not supported
		VHT TX highest supported: 0 Mbps
	VHT operation:
		 * channel width: 0 (20 or 40 MHz)
		 * center freq segment 1: 0
		 * center freq segment 2: 0
		 * VHT basic MCS set: 0x0000
	WMM:	 * Parameter version 1
		 * u-APSD
		 * BE: CW 15-1023, AIFSN 3
		 * BK: CW 15-1023, AIFSN 7
		 * VI: CW 7-15, AIFSN 2, TXOP 3008 usec
		 * VO: CW 3-7, AIFSN 2, TXOP 1504 usec


Thanks,
Ben

-- 
Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com



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