Shure Incorporated
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Quality of Service (QoS) with 4 queues
Diffserv (DSCP) QoS, with strict priority
Recommended: A managed switch to provide detailed information about the operation of each network link (port speed,
error counters, bandwidth used)
QoS (Quality of Service) Settings
QoS settings assign priorities to specific data packets on the network, ensuring reliable audio delivery on larger networks with
heavy traffic. This feature is available on most managed network switches. Although not required, assigning QoS settings is
recommended.
Note: Coordinate changes with the network administrator to avoid disrupting service.
To assign QoS values, open the switch interface and use the following table to assign Dante-associated queue values.
Assign the highest possible value (shown as 4 in this example) for time-critical PTP events
Use descending priority values for each remaining packet.
Dante QoS Priority Values
Priority Usage DSCP Label Hex Decimal Binary
High (4)
Time-critical PTP
events
CS7 0x38 56 111000
Medium (3) Audio, PTP EF 0x2E 46 101110
Low (2) (reserved) CS1 0x08 8 001000
None (1) Other traffic BestEffort 0x00 0 000000
Note: Switch management may vary by manufacturer and switch type. Consult the manufacturer's product guide for specific configuration details.
For more information on Dante requirements and networking, visit www.audinate.com.
Networking Terminology
PTP (Precision Time Protocol): Used to synchronize clocks on the network
DSCP (Differentiated Services Code Point): Standardized identification method for data used in layer 3 QoS prioritization
Packet Bridge
Packet bridge enables an external controller to obtain IP information from the control interface of a Shure device. To access the
packet bridge, an external controller must send a query packet over unicast UDP* to port 2203 on the Dante interface of the
Shure device.
Send a UDP packet with a minimum 1-byte payload .
Note: The maximum accepted payload 140 bytes. Any content is allowed.
The Shure device will send a response packet over unicast UDP to the controller, using a destination UDP port identical
to the source port of the query packet. The payload of the response packet follows this format:
Bytes Content
0-3 IP address, as 32-bit unsigned integer in network order
4-7
Subnet mask, as 32bit unsigned integer in network or
der