Controller Based WLANs

How do I verify that the VoIP device is sending the correct QOS value?

Aruba Employee

Product and Software: This article applies to ArubaOS 3.1.1.x and 3.3.2.x.

 

If your device supports WMM, you can verify the WMM counters with the 'show ap debug client-stats [MAC Address]' command. A sample output is shown here. Please note the WMM receive counters. Depending on the WMM receive value, the TSO DSCP value will be set.

 

show ap debug client-stats [MAC Address] Station Stats ------------- Parameter Value --------- ----- ---------------- General Per-radio Statistics ---------------- Transmit Specific Statistics Frames Rcvd For TX 7068 Tx Frames Dropped 63 Frames Transmitted 7005 Success With Retry 52 Tx Mgmt Frames 2 Tx Probe Responses 0 Tx Data Frames 7066 Tx CTS Frames 0 Dropped After Retry 63 Dropped No Buffer 0 Missed ACKs 178 Long Preamble 7068 Short Preamble 0 Tx EAPOL Frames 4 Tx 6 Mbps 6 Tx 9 Mbps 2 Tx 12 Mbps 1 Tx 18 Mbps 21 Tx 24 Mbps 61 Tx 36 Mbps 645 Tx 48 Mbps 1911 Tx 54 Mbps 4421 Tx WMM [BE] 20 Tx WMM [VO] 7048 UAPSD OverflowDrop 0 ---------------- Receive Specific Statistics Last SNR 20 Last ACK SNR 21 Frames Received 7097 Rx Data Frames 6939 Null Data Frames 0 Rx Mgmt Frames 1 PS Poll Frames 157 Rx 12 Mbps 135 Rx 18 Mbps 320 Rx 24 Mbps 929 Rx 36 Mbps 1461 Rx 48 Mbps 1022 Rx 54 Mbps 3230 Rx WMM [BE] 1077 <<<<<<<<< Rx WMM [VO] 5862 <<<<<<<<

*********************************************

 

In release 3.1.1.x, you can map the WMM/AC values to the following DSCP value. You must verify that the correct COS is configured on the core switches for the assigned DSCP value.

 

UP WMM AC DSCP

 

7 AC_VO 0x38

 

6 AC_VO 0x30

 

5 AC_VI 0x28

 

4 AC_VI 0x20

 

3 AC_BE 0x18

 

2 AC_BK 0x10

 

1 AC_BK 0x08

 

0 AC_BE 0x00

 

*********************************************

 

In release 3.3.1.x, you can assign the WMM/AC value to the DSCP value that is configured on the core switches. Here is a sample profile:

 

(Aruba5000) #show wlan ssid-profile test

 

SSID Profile "test"

 

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

 

Parameter Value

 

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

 

SSID enable Enabled

 

ESSID aruba-ap

 

Encryption opensystem

 

DTIM Interval 1 beacon periods

 

802.11a Basic Rates 6 12 24

 

802.11a Transmit Rates 6 9 12 18 24 36 48 54

 

802.11g Basic Rates 1 2

 

802.11g Transmit Rates 1 2 5 6 9 11 12 18 24 36 48 54

 

Station Ageout Time 1000 sec

 

Max Transmit Attempts 4

 

RTS Threshold 2333 bytes

 

Short Preamble Enabled

 

Max Associations 64

 

Wireless Multimedia (WMM) Disabled

 

WMM TSPEC Min Inactivity Interval 0 msec

 

DSCP mapping for WMM voice AC 46 <<<<<<<<<<<

 

DSCP mapping for WMM video AC N/A

 

DSCP mapping for WMM best-effort AC N/A

 

DSCP mapping for WMM background AC N/A

 

902il Compatibility Mode Disabled

 

Hide SSID Disabled

 

Deny_Broadcast Probes Disabled

 

Local Probe Response Enabled

 

Battery Boost Disabled

 

Drop Broadcast and Multicast Disabled

 

WEP Key 1 N/A

 

WEP Key 2 N/A

 

WEP Key 3 N/A

 

WEP Key 4 N/A

 

WEP Transmit Key Index 1

 

WPA Hexkey N/A

 

WPA Passphrase N/A

 

Maximum Transmit Failures 0

 

EDCA Parameters Station profile N/A

 

EDCA Parameters AP profile N/A

 

BC/MC Rate Optimization Disabled

 

High-throughput SSID Profile default

 

(Aruba5000) #

 

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Last update:
‎07-01-2014 04:25 PM
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