User guide

5-150
CHAPTER 5: COMMAND LINE INTERFACE
Example
wmmparam
This command configures detailed WMM parameters that apply to the access
point (AP) or the wireless clients (BSS).
Syntax
wmmparam <AP | BSS> <ac_number> <LogCwMin> <LogCwMax>
<AIFS> <TxOpLimit> <admission_control>
• AP - Access Point
• BSS - Wireless client
• ac_number - Access categories (ACs) – voice, video, best effort, and
background. These categories correspond to traffic priority levels and are
mapped to IEEE 802.1D priority tags as shown in Table . (Range: 0-3)
• LogCwMin - Minimum log value of the contention window. This is the
initial upper limit of the random backoff wait time before wireless medium
access can be attempted. The initial wait time is a random value between
zero and the LogCwMin value. Specify the LogCwMin value. Note that the
LogCwMin value must be equal or less than the LogCwMax value.
(Range: 1-15 microseconds)
• LogCwMax - Maximum log value of the contention window. This is the
maximum upper limit of the random backoff wait time before wireless
medium access can be attempted. The contention window is doubled
after each detected collision up to the LogCwMax value. Note that the
CWMax value must be greater or equal to the LogCwMin value.
(Range: 1-15 microseconds)
• AIFS - Arbitrary InterFrame Space specifies the minimum amount of wait
time before the next data transmission attempt.
(Range: 1-15 microseconds)
• TXOPLimit - Transmission Opportunity Limit specifies the maximum time
an AC transmit queue has access to the wireless medium. When an AC
queue is granted a transmit opportunity, it can transmit data for a time up
to the TxOpLimit. This data bursting greatly improves the efficiency for
high data-rate traffic. (Range: 0-65535 microseconds)
• admission_control - The admission control mode for the access category.
When enabled, clients are blocked from using the access category.
(Options: 0 to disable, 1 to enable)
Enterprise AP(if-wireless a)#wmm-acknowledge-policy 0 noack
Enterprise AP(if-wireless a)#