Alvarion BREEZEACCESS SW VERSION 5.1 - Manual (Page 232)

Chapter 4 - Operation and Administration
BreezeACCESS VL System Manual
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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
consecutive numbers: RTP port is always an even number, and the port with
the odd number following it will be assigned to RTCP.
If the administrator selects to prioritize only the RTP packets, then all the
packets with an odd numbered destination port will always have Low priority.
The packets with an even number for destination port will receive High
priority, if the port number is included in the specified ranges.
If the administrator selects to prioritize both RTP and RTCP packets, then all
packets whose destination port number is included is in the specified ranges
will receive High priority.
The available options are:
‘ RTP & RTCP
‘ RTP Only
The default is RTP & RTCP
„ Add UDP Port Ranges: This option enables adding UDP port ranges to the list
of priority port numbers. The list can include up to 64 ranges. It is possible to
add discrete port numbers and/or ranges. In ranges, a hyphen is used to
separate between start and end port numbers. A comma is used to separate
between entries.
For example: 8900,9000-9005,9010,9016-9017.
„ Delete UDP Port Ranges: This option enables deleting UDP port ranges from
the list of priority port numbers. It is possible to delete discrete port numbers
and/or ranges. In ranges, a hyphen is used to separate between start and end
port numbers. A comma is used to separate between entries.