User's Manual

Chapter 4 - Operation and Administration
BreezeACCESS VL System Manual
184
4.2.6.6.3.2.3 DSCP Threshold
The DSCP Threshold parameter is applicable when the ToS Prioritization Option
is set to Enable DSCP (RFC2474) Prioritization. If the value of the 6 DSCP bits in
the IP header is higher than this threshold, the packet is routed to the High
queue. If the value is lower than or equal to this threshold, the packet will be
routed to the Low queue (unless it is assigned a High priority by another
classifier).
Valid values range from 0 to 63.
The default value is 32.
4.2.6.6.3.3 UDP/TCP Port Ranges Traffic Prioritization
The UDP/TCP Port Ranges Traffic Prioritization parameters enable defining
prioritization in accordance with the UDP and/or TCP destination port ranges.
The UDP/TCP Port Ranges Traffic Prioritization menu includes the following
parameters:
4.2.6.6.3.3.1 UDP/TCP Port Ranges Prioritization Option
The UDP/TCP Port Ranges Prioritization Option defines whether port ranges
based prioritization is enabled or disabled. The following options are available:
 Disable
 Enable Only for UDP
 Enable Only for TCP
 Enable for both UDP and TCP
The default is Disable.
4.2.6.6.3.3.2 UDP Port Ranges
The UDP Port Ranges menu enables defining port ranges to be used as priority
classifiers when the UDP/TCP Port Ranges Prioritization Option is set to either
Enable Only for UDP or Enable for both UDP and TCP. All packets whose
destination is included in the list will be routed to the High queue. All other
packets will be routed to the Low queue (unless they were assigned a High
priority by another classifier).
The UDP Port Ranges menu includes the following options:
 UDP RTP/RTCP Prioritization: Voice over IP is transported using Real Time
Protocol (RTP). The Real Time Control Protocol (RTCP) is used to control the
RTP. When an application uses RTP/RTCP, it chooses for destination ports