Cambium Networks PTP 450 Series, Configuration Manual

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Chapter 1: Configuration Configuring quality of service
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1-252
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Configuration Source on page 1-74
Max Burst Downlink
Data Rate These parameters allow operators to specify the data rate at which an SM is
allowed to transmit (until burst allocation limit is reached) before being
recharged at the Sustained Downlink Data Rate with credits to transit
more. When set to 0 (default), the burst rate is unlimited.
Max Burst Uplink Data
Rate These parameters allow operators to specify the data rate at which an SM is
allowed to transmit (until burst allocation limit is reached) before being
recharged at the Sustained Uplink Data Rate with credits to transit more.
When set to 0 (default), the burst rate is unlimited.
Broadcast Downlink
CIR Broadcast Downlink CIR (Committed Information Rate, a minimum) supports
system designs where downlink broadcast is desired to have higher priority
than other traffic. For many other system designs, especially typical internet
access networks, leave the Broadcast Downlink CIR at the default.
Broadcast Downlink CIR is closely related to the Broadcast Repeat Count
parameter, which is settable in the Radio tab of the Configuration page in
the AP: when the Broadcast Repeat Count is changed, the total of available
bandwidth is also changed, since packets are being sent one, two, or three
times, according to the setting in the Broadcast Repeat Count parameter.
Scheduler This parameter allows the operator to either select the Proportional
scheduler or the Legacy scheduler.
Default Downlink Plan This parameter allows the operator to configure the default downlink plan.
The value range for this parameter is 1 – 310000 kbps.
Note: Configure this parameter when an SM is not configured with a plan or
an SM is still running software older than system release 16.1.
Default Uplink Plan This parameter allows the operator to configure the default uplink plan. The
value range for this parameter is 1 – 310000 kbps.
Note: Configure this parameter when an SM is not configured with a plan or
an SM is still running software older than system release 16.1.
Priority Precedence Allows operator to decide if 802.1p or DiffServ priority bits must be used
first when making priority decisions.
PPPoE Control
Message Priority Operators may configure the SM to utilize the high priority channel for
PPPoE control messages. Configuring the SM in this fashion can benefit the
continuity of PPPoE connections when there are issues with PPPoE sessions
being dropped in the network. This prioritization may be configured in the
DiffServ tab in the Configuration menu of the SM.
Prioritize TCP ACK To reduce the likelihood of TCP acknowledgement packets being dropped,
set this parameter to Enabled. This can improve throughput that the end
user perceives during transient periods of congestion on the link that is
carrying acknowledgements.
Management Data
Priority Level This parameter allows to set the priority level of the VC used by
Management data.