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How Do I Confirm Wireless Parameters of a STA After the STA Associates with an AP?
To provide good wireless experience for STAs, APs and STAs must both have excellent wireless performance.
If the configurations on the AC or AP are correct and the AP performance indicators are clear but a STA does not reach the expected status, you can check the wireless parameters of the STA on the AC based on the MAC address of the STA after the STA goes online.
The commands for querying the wireless parameters of STAs on the AC vary according to the AC version.
- In versions earlier than V200R006: Run the display station assoc-info sta mac-address command in any view.
<AC> display station assoc-info sta 4016-9f14-f25d ------------------------------------------------------------------------------ ...... Station's radio mode : 11b ...... Station's Channel Band-width : 20MHz Station's asso BSSID : dcd2-fc9a-2110 Station's state : Asso with auth Station's Qos Mode : NULL Station's HT Mode : - Station's MCS value : 0 Station's NSS value : 0 Station's Short GI : support ...... ------------------------------------------------------------------------------
- In V200R006 and later versions: Run the display station sta-mac sta-mac-address command in any view.
<AC> display station sta-mac b878-2eb4-2689 ------------------------------------------------------------------------------ ...... Station's radio mode : 11n ...... Station's Channel Band-width : 20MHz Station's asso BSSID : dcd2-fc04-b513 Station's state : Asso with auth Station's QoS Mode : WMM Station's HT Mode : HT20 Station's MCS value : 9 Station's NSS value : 2 Station's Short GI : nonsupport ...... ------------------------------------------------------------------------------
The command output is described as follows:
- Station's radio mode: radio type supported by the STA. This parameter is related to the radio type supported by the AP. For example, if the STA supports 802.11ac but the AP supports only 802.11n, the actual radio type displayed on the STA is also 802.11n. If the STA and AP both support 802.11ac, the actual radio type displayed on the STA is 802.11ac.
- Station's Channel Band-width: channel bandwidth supported by the STA. If channel bonding is configured on the AC, for example, two adjacent 20 MHz channels are bonded into a 40 MHz channel, the bandwidth displayed on the STA that supports the 40 MHz frequency band is 40 MHz after channel bonding.
- Station's HT Mode: HT mode of the STA.
- Station's MCS value: negotiated rate level corresponding to the spatial stream. A higher level indicates a higher negotiated rate. For 802.11n, the MCS value ranges from 0 to 7 for a single spatial stream, from 8 to 15 for dual spatial streams, and from 16 to 23 for three spatial streams. For 802.11ac, the MCS value ranges from 0 to 9.
- Station's NSS value: number of spatial streams supported by the STA The NSS value is displayed for STAs working only in 802.11ac mode or STAs working in 802.11n mode and supporting 256-QAM.
- Station's Short GI: indicates whether the STA supports the short GI mode. This parameter is related to the GI mode configured on the AC. If the GI mode is not set to short on the AC, nonsupport is displayed on the STA.