Saturday 21 April 2012

What is disconnect-timeout setting




This interval is measured from third sending failure on the lowest data rate. At this point 3 * (hw-retries + 1) frame transmits on the lowest data rate had failed. During disconnect-timeout packet transmission will be retried with on-fail-retry-time interval. If no frame can be transmitted successfully during disconnect-timeout, connection is closed, and this event is logged as "extensive data loss". Successful frame transmission resets this timer.
What is adaptive-noise-immunity setting?

Adaptive Noise Immunity (ANI) adjusts various receiver parameters dynamically to minimize interference and noise effect on the signal quality [1] This setting is added in the wireless driver for Atheros AR5212 and newer chipset cards
How does wireless device measure signal strength, when access-list or connect-list are used ?

Reported signal level is exponentially weighted moving average with smoothing factor 50%.
What error correction methods are supported in the RouterOS wireless?

ARQ method is supported in nstreme protocols. Regular 802.11 standard does not include ARQ - retrasmission of corrupt frames is based on acknowledgement protocol. RouterOS supports forward error correction coding (convolutional coding) with coding rates: 1/2, 2/3, or 3/4.
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