DCT e-track, User Manual, Page: 192 / 212

4.23. UNIT’S TAIP REFERENCE
4.23.51 (XAUP) UDP Server Port
Qualifiers :
S
,
Q
,
R
This command is used to configure a listening UDP port on the unit.
If the special value
00000
is used the unit won’t listen for UDP mes-
sages on a fixed port, instead it will only use the dynamic port created
when it sends reports to a UDP destination.
When set, the unit listens for UDP messages on this port originated
from any IP-type
Destination configured to work on UDP. This val-
idation can only be done when the Destination is defined as an IP
number, i.e. a host name can not be validated when trying to com-
municate trough the unit’s UDP server port.
Another type of IP-address validation can be done by configuring
on the unit an UDP-Network which is allowed to interact with the
UDP-Server port. This is achieved with the
XAUN
message. When
an UDP network is set, the unit uses it first to validate an incom-
ing query on the UDP-Server port, if the peer’s IP address matches
the UDP-Network, a response is sent too the peer
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. If it does not
match with the UDP-Network, it tries to find a match on any of the
IP-type, UDP-defined
Destinations , if a match is found, a response
is generated to the IP/UDP-Port defined on the matching Destina-
tion
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. Finally, if no match is found, the query is silently discarded.
Regardless of this parameter being set or not, the unit always listens
on the dynamic UDP port generated when a report is transmitted to
a UDP destination.
The message has the following format:
AAAAA
Chars Item Format Value Meaning
5 Server Port AAAAA 0-65535 Server Port: ’A’ sets the listening UDP port
for the unit. Using
00000
makes the unit
not to listen on a fixed listening port, it will
continue listening on the dynamic UDP port
created when UDP reports are transmitted.
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The response is sent by interchanging Source Port with Destination Port
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Source and Destination ports are not interchanged: An UDP datagram is gen-
erated having Source Port randomly-set and Destination Port set to the value
configured with the
XADP message corresponding to the matching Destination
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