OTC Wireless WiSER2400 Manual de usuario descargar pdf (Pagina 19)

b. UDP header:

i. Source Port number = “UDP Port” in the “This Unit” portion in the

configuration panel.

ii. Destination Port number = “UDP Port” in the “Dest. Unit” portion in the

configuration panel.

iii. UDP Length = UDP header length + data length. This data length would

be =< “Max Bytes/Pkt” value.

iv. The “Max Bytes/Pkt” field is in the “Configuration Panel.” (See section II

for detail).

v. UDP Check sum = calculated over UDP header and serial data.

c. RS232 Data: this is the serial data received from serial port.

Incoming UDP/IP packet:

a. IP Header: checking on the following fields. Other fields that are not

mentioned are not checked.

i. Total length: must be greater than IP header length and UDP header

length

ii. Flags and Fragment offset: must be “Don’t fragment” and “Last fragment”

iii. Protocol: must be UDP.

iv. IP Header check sum: must be correct

v. Source IP address: must be equal “IP Addr” in the “Dest. Unit” portion in

the configuration panel.

vi. Destination IP address: must be equal “IP Addr” in the “This Unit” portion

in the configuration panel.

b. UDP header: checking on the following fields. Other fields that are not

mentioned are not checked.

i. Source Port number: must be equal “UDP Port” in the “Dest. Unit” portion

in the configuration panel.

ii. Destination Port number: must be equal “UDP Port” in the “This Unit” in

the configuration panel.

iii. UDP Length = UDP header length + data length. The data length has to

be =< 200.

iv. UDP Check sum: ignored if 0. Otherwise, a checksum calculation is

performed on UDP header and serial data.

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OTC Wireless WiSER2400 Manual de usuario Pagina 19