That looks like the one.
Since we can generate the discards on one AP and one SM, we aren't using that as an indication that an AP is overloaded. I assume inbound packets destined for the SM are dropped at the AP due to MIR settings, thus creating a discard.


On 1/26/2015 12:50 PM, Matt wrote:
The only existing tool built into an AP that does this would be under
Statistics > Throughput and enabling Throughput Monitoring.
This will tell you when you are tossing xx% of RF packets due to an
"overload" condition.
We graph 'RF out discards' on each AP and connection but we seem to get them
Is this what you graph?

http://support.cambiumnetworks.com/framed/onlinetools/content.WHISP-APS-MIB.html#rfOutDiscardRate

Apparently its not telling you much?


even during low utilization periods.
With 450, we can generate RF discards in the lab with a single AP and single
SM so we aren't really sure when an AP is overloaded.

Please head over to Cambium's community forum and give Kudos to these posts:
http://community.cambiumnetworks.com/t5/Your-Ideas/Utilization-per-Sector/idi-p/37968
http://community.cambiumnetworks.com/t5/Your-Ideas/450-AP-Throughput-capacity/idi-p/36808

Alternatively, you can input your AP's session info (current up and down
modulations) into the Capacity Planner available here:
https://support.cambiumnetworks.com/files/pmp450/
That should give you a theoretical max available bandwidth.


On 1/26/2015 11:57 AM, Matt wrote:
We graph all the ethernet Interfaces on our FSK Canopy AP's etc with
MRTG.  Is there a way to graph the actual utilization to see when an
AP is maxed?  I know an AP with all 2X clients should have 10mbps
downstream which most ours do.  What I cant tell is when an AP has a
mix of 1X and 2X if the AP is maxed out or not by the graph.  Same
principle for 450 AP's.

Perhaps there is a packet queue on the AP that gets congested at times
like this I can graph on five minute intervals?  Something like that?


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