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show ap debug client-table

show ap debug client-table [ap-name <ap-name>|bssid <bssid>|ip-addr <ip-addr>|ip6-addr <ip6-addr>]

Description

Show clients associated to an AP.

Syntax

Parameter

Description

ap-name <ap-name>

Filter the client table by AP name.

bssid <bssid>

Filter the client table by BSSIDBasic Service Set Identifier. The BSSID identifies a particular BSS within an area. In infrastructure BSS networks, the BSSID is the MAC address of the AP. In independent BSS or ad hoc networks, the BSSID is generated randomly.. This will print clients on top from given BSSIDBasic Service Set Identifier. The BSSID identifies a particular BSS within an area. In infrastructure BSS networks, the BSSID is the MAC address of the AP. In independent BSS or ad hoc networks, the BSSID is generated randomly..

ip-addr <ip-addr>

Filter the client table by AP IP address.

ip6-addr <ip-addr>

Filter the client table by AP IPv6 address.

Usage Guidelines

The Tx_Rate, Rx_Rate, Last_ACK_SNR, and Last_Rx_SNR columns shown in the output of this command display valuable troubleshooting information for clients trying to connect to a specific AP. Use this command to verify that the transmit (Tx_Rate) and receive (Rx_Rate) rates are not too low, and that the signal-to-noise (SNRSignal-to-Noise Ratio. SNR is used for comparing the level of a desired signal with the level of background noise.) ratio is acceptable.

Examples

The example below the AP configuration table for a specific BSSIDBasic Service Set Identifier. The BSSID identifies a particular BSS within an area. In infrastructure BSS networks, the BSSID is the MAC address of the AP. In independent BSS or ad hoc networks, the BSSID is generated randomly.. In this example, the output is divided into multiple sections to better fit on the pages of this document. In the actual CLICommand-Line Interface. A console interface with a command line shell that allows users to execute text input as commands and convert these commands to appropriate functions., it appears in a single, long table.

(host) #show ap debug client-table ap-name apname1

Client Table

------------

MAC ESSID BSSID Assoc_State HT_State AID

--- ----- ----- ----------- -------- ---

00:10:18:a9:7c:48 essidname1 6c:f3:7f:e7:5c:90 Associated cAWvSseM 0x1

 

PS_State UAPSD Tx_Pkts Rx_Pkts PS_Qlen Tx_Retries Tx_Rate Rx_Rate

-------- ----- ------- ------- ------- ---------- ------- -------

Awake (0,0,0,0,N/A,0) 799 1377 0 48 1300 1053

 

Last_ACK_SNR Last_Rx_SNR TX_Chains Tx_Timestamp

------------ ----------- --------- ------------

32 47 3[0x7] Sun Jul 21 11:05:50 2013

 

Rx_Timestamp MFP Status (C,R) Idle time Client health (C/R)

------------ ---------------- --------- -------------------

Sun Jul 21 11:05:50 2013 (0,0) 119 90/90

 

UAPSD:(VO,VI,BK,BE,Max SP,Q Len)

HT Flags: A - LDPC Coding; W - 40MHz; S - Short GI 40; s - Short GI 20

D - Delayed BA; G - Greenfield; R - Dynamic SM PS

Q - Static SM PS; N - A-MPDU disabled; B - TX STBC

b - RX STBC; M - Max A-MSDU; I - HT40 Intolerant

VHT Flags: C - 160MHz; c - 80MHz; V - Short GI 160; v - Short GI 80

E - Beamformee; e - Beamformer

HT_State shows client's original capabilities (not operational capabilities)

The output of this command includes the following information:

Parameter

Description

MAC

MACMedia Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network. address of a client.

ESSID

Extended Service Set identifier (ESSIDExtended Service Set Identifier. ESSID refers to the ID used for identifying an extended service set.) used by the client. An ESSIDExtended Service Set Identifier. ESSID refers to the ID used for identifying an extended service set. is a user-defined name for a wireless network.

BSSID

Basic Service Set identifier for the client.

Assoc_State

The associated state column shows whether or not the client is currently authorized and/or associated with the AP.

HT_State

Shows information about the client’s high-throughput or very-high throughput transmission type. The description for each of the flags that can appear in this column follows the output of the command.

A - LDPCLow-Density Parity-Check. LDPC is a method of transmitting a message over a noisy transmission channel using a linear error correcting code. An LDPC is constructed using a sparse bipartite graph. Coding

W - 40MHz

S - Short GI 40

s - Short GI 20

D - Delayed BA

G - Greenfield

R - Dynamic SM PS

Q - Static SM PS

N - A-MPDUMAC Protocol Data Unit. MPDU is a message exchanged between MAC entities in a communication system based on the layered OSI model. disabled

B - TX STBCSpace-Time Block Coding. STBC is a technique used in wireless communications to transmit multiple copies of a data stream across a number of antennas and to exploit the various received versions of the data to improve the reliability of data transfer.

b - RX STBCSpace-Time Block Coding. STBC is a technique used in wireless communications to transmit multiple copies of a data stream across a number of antennas and to exploit the various received versions of the data to improve the reliability of data transfer.

M - Max A-MSDU

I - HT40 Intolerant

C - 160MHz

c - 80MHz

V - Short GI 16

v - Short GI 80

E - Beamformee

e - Beamformer

AID

802.11802.11 is an evolving family of specifications for wireless LANs developed by a working group of the Institute of Electrical and Electronics Engineers (IEEE). 802.11 standards use the Ethernet protocol and Carrier Sense Multiple Access with collision avoidance (CSMA/CA) for path sharing. association ID. A client receives a unique 802.11802.11 is an evolving family of specifications for wireless LANs developed by a working group of the Institute of Electrical and Electronics Engineers (IEEE). 802.11 standards use the Ethernet protocol and Carrier Sense Multiple Access with collision avoidance (CSMA/CA) for path sharing. association ID when it associates to an AP.

PS_State

Powersave state, showing if the AP is in the awake or power-save state.

UAPSD

This parameter shows the Unscheduled Automatic Power Save Delivery (UAPSD) queue statuses in the following comma-separated format: (<VO>,< VI>,< BK>, <BE>,< Max SP>,<Q Len>).

VO: If 1, UAPSD is enabled for the VoIPVoice over IP. VoIP allows transmission of voice and multimedia content over an IP network. access category. If UAPSD is disabled for this access category, this value is 0.

VI: If 1, UAPSD is enabled for the Video access category. If UAPSD is disabled for this access category, this value is 0.

BK: If 1, UAPSD is enabled for the Background access category. If UAPSD is disabled for this access category, this value is 0.

BE: If 1, UAPSD is enabled for the Best Effort access category. If UAPSD is disabled for this access category, this value is 0.

Max SP: The maximum service period is the number of frame sent per trigger packet. This value is value can be 0, 2, 4 or 8.

Q Len: The number of frames currently queued for the client, from 0 to 16 frames.

Tx_Pkts

Number of packets transmitted from the AP to the client.

Rx_Pkts

Number of packets the AP received from the client.

PS_Qlen

Number of packets in the power save queue length.

Tx_Retries

Number of packets that the AP had to resend to the client due to an initial transmission failure.

Tx_rate

Rate at which last packet was sent to client (in MbpsMegabits per second)

Rx_rate

Rate at which last packet was received from client (in MbpsMegabits per second)

Last_ACK_SNR

Signal-to-Noise ratio of the last acknowledge packet sent by client.

Last_Rx_SNR

Signal-to-Noise ratio of the last data packet received from the client.

TX_Chains

The first digit in this value indicates the number of transmission chains on the radio currently in use, and the number in brackets shows which of the chains are active.

The current status of each chain is indicated by a single-digit binary number; 1 if the chain is active, and 0 if it is inactive. In the example output above (2 [0x5]), two chain are active; chain one and chain three.

chain one:    1 (active)

chain two:     0 (inactive)

chain three: 1 (active

In the example above, the chain would generate the value 101, which translates to the hexadecimal number 5. If all three chain were active, it would generate the value 111, (the hexadecimal number 7), and would appear in the CLICommand-Line Interface. A console interface with a command line shell that allows users to execute text input as commands and convert these commands to appropriate functions. output as 3 [0x7].

Tx_timestamp

Date and time the last packet was sent to the client.

Rx_timestamp

Date and time the last packet was received from the client.

MFP status

Client is 802.11W capable/802.11W is enabled on Radio

Idle Time

Number of seconds elapsed since a packet was received from the client.

Client Health

This column shows the client health of the client and the AP radio, in the format <client_health>/<AP-health>. These values report the quality of link between the client and radio,

An AP’s client health is the efficiency at which that AP transmits downstream traffic to a particular client. This value is determined by comparing the amount of time the AP spends transmitting data to a client to the amount of time that would be required under ideal conditions, that is, at the maximum Rx rate supported by client, with no data retries.

A client health metric of 100% means the actual airtime the AP spends transmitting data is equal to the ideal amount of time required to send data to the client. A client health metric of 50% means the AP is taking twice as long as is ideal, or is sending one extra transmission to that client for every packet. A metric of 25% means the AP is taking four times longer than the ideal transmission time, or sending 3 extra transmissions to that client for every packet.

Command History

Command

Description

ArubaOS 8.0.0.0

Command introduced.

Command Information

Platforms

Licensing

Command Mode

All platforms

Base operating system.

Enable or Config mode on Mobility Master.

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