Cambium Networks PMP 450 AP, Configuration Manual

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Chapter 5: Troubleshooting
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450m Reference information
A.1 Specifications
Please see the Specification sheets listed on the Cambium Networks website for the most up-to-date
450m Series AP specifications:
http://www.cambiumnetworks.com/resource/pmp-450m/
A.2 450m overload
The 450m Series AP is designed to handle high load in terms of high throughput and high PPS. In terms
of throughput, 450m is designed to achieve 3x or more throughput improvement over 450 and 450i
Series products. In terms of packets per second (PPS), 450m is designed to handle up to 100k PPS.
Overload occurs when the offered load exceeds the above limits. When overload occurs, 450m will start
discarding packets and TCP throughput will degrade due to packet loss. The 450 family of products
have a set of overload statistics that can be used to monitor overload conditions (Statistics >Overload
tab).
The above statistics shall be monitored over time for overload conditions over consecutive periods.
Refer to
Interpreting Overload statistics for description of those statistics.
It’s worth noting that Frame Utilization statistics (Statistics >Frame Utilization tab: Frame Utilization:
Downlink and Uplink) are not necessarily indicative of overload condition. They show how much the
TDD frame is utilized. High frame utilization depends on: