4RF Aprisa SR+ User Manual - page 102
Managing the Radio | 99
Aprisa SR User Manual
Ethernet Data Priority
The Ethernet Data Priority controls the priority of the Ethernet traffic relative to the serial traffic. If
equal priority is required to serial traffic, this setting must be the same as the Serial Data Priority setting
The Ethernet Data Priority can be set to Very High, High, Medium and Low. The default setting is Very
High.
A queuing system is used to prioritize traffic from the serial and Ethernet interfaces for over the air
transmission. A weighting may be given to each data type and this is used to schedule the next
transmission over the air e.g. if there are pending data packets in multiple buffers but serial data has a
higher weighting it will be transmitted first. The Ethernet buffer is 10 Ethernet packets (1 packet can be
up to Ethernet MTU, 1500 bytes).
There are four priority queues in the Aprisa SR: Very High, High, Medium and Low. Data is added to one of
these queues depending on the priority setting. Data leaves the queues from highest priority to lowest:
the Very High queue is emptied first, followed by High then Medium and finally Low.
L2 Filter
This parameter enables / disables L2 Filtering. The default setting is disabled.
If L2 Filtering is enabled, the filters defined in Ethernet > L2 Filtering become active.
If L2 Filtering is disabled, the filters defined in Ethernet > L2 Filtering have no effect.