Cambium Networks PTP 450 Series, Configuration Manual

Page: 179 / 649

Chapter 1: Configuration Configuring radio parameters
Page
1-151
Multicast VC This pull-down menu of the Multicast VC screen helps in configuring
multicast packets to be transmitted over a dedicated channel at a
configurable rate of 2X, 4X or 6X. The default value is “Disable”. If set to the
default value, all multicast packets are transmitted over the Broadcast VC
data path. This feature is available only for the PMP 450 Series and is not
backward compatible with PMP 430 series of radios.
Multicast Repeat
Count This value is the number of packets that are repeated for every multicast VC
packet received on the AP (located under Radio tab of Configuration).
Multicast (like Broadcast) packets go over a VC that is shared by all SMs, so
there is no guaranteed delivery. The repeat count is an attempt to improve
the odds of the packets getting over the link. If the user has issues with
packets getting dropped, they can use this parameter to improve the
performance at the cost of the overall throughput possible on that channel.
The default value is
0 .
Multicast Downlink
CIR This value is the committed information rate for the multicast downlink VC
(located under the Radio tab of Configuration). The default value is
0 kbps.
The range of this parameter is based on the number of repeat counts. The
higher the repeat count, the lower the range for the multicast downlink CIR.
Near Field Operation This parameter is enabled by the Near Field Operation control. This is only
available when the EIRP is set to 22 dBm or below.
When Near Field Operation is enabled, the Near Field Range is used to apply
compensation to the unit’s calibration to support operation in the near field.
SM Registration Limit
This parameter allows to configure the limit for maximum number of SMs
that can register to a PMP AP. The configurable range is from 1 to 238.
Note
SM trying to register after the maximum configured limit
has been reached is locked out for 15 minutes and a
message is displayed at the SM.
Receive Quality
Debug To aid in link performance monitoring, the AP and SM now report the
number of fragments received per modulation (i.e. QPSK, 16-QAM, 64-QAM)
and per channel (polarization).
Note
Due to CPU load, this will slightly degrade packet per second
processing.