Radio Wireless Interface Diagnostics

Provide an AP ID and Interface ID, then click Start Diagnostics.

Tips on interpreting the graphs appear when you click Graph Help, such as descriptions for each chart and a numeric version of the chart information. To modify a graph setup, click Advanced.

Throughput

This chart represents the distribution of each individual wireless radio’s throughput over the range of the radio with the lowest throughput and the radio with the highest throughput. Throughput is defined as the sum of the transmitted and received bits-per-second for that radio measured over the last two minutes. 

Noise Level

Noise is defined as either random noise with no coherence or coherent noise introduced by the devices mechanism or processing. Noise level is calculated in each wireless radio and represents the noise floor. No averaging method is used here and the noise level and noise floor are the same. The noise floor is represented in dbm which is a negative value.

Associated Stations

This chart shows the distribution of wireless stations across the radios in your network. The leftmost bars represent radios supporting the fewest wireless stations and the right-most bars represent radios supporting the most wireless stations.  

Trend %, Loss %, Channel Utilization %

Loss is defined as the percentage of 802.11 unicast packets transmitted for which no 802.11 Ack is received. This chart represents the distribution of packet loss across all wireless radios on this controller over the last two minutes. Similarly to the Throughput chart, each bar represents a range of loss and how many radios fall within that range. The network is performing best when most radios are in the leftmost columns. There is a variable called AckFailCount kept for each wireless radio and so the transmit loss percentage for all unicast data frames is calculated for each radio using the formula  Loss Percentage = AckFailCount / (successful frames + AckFailCount) * 100 (%)

The colors in the chart are a clue to the relative health of the traffic, darkest green being the best result (low loss).

.