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Configuring Class of Service 4-27
Concurrent UDP Streams This option controls the
number of simultaneous multimedia UDP packet streams
the network driver can handle at any time. For many
applications, the number of UDP streams is the same as
the number of connections.
For example, for videoconferencing with three people,
applications use three UDP streams for the video data. The
value must be a power of 2 (2, 4, 8) but the optimal value
may vary depending on the PC and application.
A video server may support 32 connections, but a client
may only want to conference with four other people at
a time.
The default value of 16 is the recommended setting for
most applications.
Low-Priority Ratio When Class of Service support is
enabled, high-priority packets are always transmitted
before low-priority packets. If a certain high-priority
application sends out enough packets, no low-priority
packets may be sent.
To prevent this problem, the driver uses a ratio value to
periodically send out a low-priority packet (if one is waiting
to be sent).
For example, if a value of 1000 is entered, one low-priority
packet would be sent for every 1000 high-priority packets.
The default value of 25 is the recommended setting for
most applications.
Natural Packet Interval This field is not applicable. Any
value entered in this field is ignored.
Disable Switch Packet Prioritization This option is not
currently enabled. Any setting is ignored.
Disable Receive Packet Buffering This option is not
currently enabled. Any setting is ignored.
Book Page 27 Saturday, November 1, 1997 3:13 PM