Cambium Networks cnReach N500, User Manual

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cnReach N500 User Guide System Configuration
phn-4673_003v000 (November 2018)
2-25
Network Radius
Network Radius is the physical line-of-sight distance between two radios. It can be configured in Miles
(miles) or Kilometers (km) and has an effect on transmission timing.
• Setting the Network Radius larger than the actual link is acceptable.
• Setting the Network Radius smaller than the actual link may cause the radios to stop operating.
•
Network Radius must be identical in ALL radios within a network;
o PTP network; set the Network Radius in both radios as the link distance.
o
PMP network; set the Network Radius in ALL radios to the longest link in the network.
o MMS network; set the Network Radius in ALL radios to longest link within the entire
network.
Beacon Interval
Beacon Rate sets the number of transmission slots the Access Point radio may skip if it has nothing to
transmit/acknowledge. The setting can range from 1 to 15. When set to 1, if there is no data to send
after a successful transmit and if there is no End Point remote data to acknowledge, the Access Point
will not transmit for that time slot and will resume transmitting the second time slot. This feature helps
to reduce the amount of RF noise in an environment when there is no benefit of the transmission.
As the Beacon Rate is increased, several things happen…
– The XMIT LED on the Access Point and the RCV LED on the End Point start to blink.
The higher the Beacon Rate the slower the blinking.
–
Traffic on the link slows down; a basic ping test at various settings shows increased
turnaround time as the Beacon Rate is increased.
–
With slower modulations, if the Beacon Rate is increased too much the link will go
down.
AP Repeat
Access Point Repeat sets the maximum number of times the Access Point will repeat a transmit packet
in the absence of an acknowledgement from the remote unit. This is only applicable for a Point-to-
Multi-Point network.
If set to 3 the Access Point will repeat a packet up to three times unless the remote unit acknowledges
receipt at which time the Access Point will move to the next packet.
The default setting is 0.
Broadcast
Broadcast defines the AP Repeat for Broadcast traffic.
Addressed
Addressed defines the AP Repeat for Addressed traffic.