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GS-2124C User Manual
Publication date: June, 2005
Revision A1
63
Function name:
IP TCP/UDP Port Classification
Function description:
In L4 QoS Configuration, you can enter one of these special network
transmission events, for example we use” Down prioritize web browsing,
e-mail, FTP and news “L4 QoS Configuration and click apply, and then click
Custom L4. We can find Special TCP/UDP port 80, 280, 443, 25, 110, 20, 21,
69, 119, 2009 have already existed and defined for your using but it is fine that
you modify this pre-defined TCP/UDP port with other port number you prefer.
In ” Down prioritize web browsing, e-mail, FTP and news “ L4 QoS
Configuration with default setting, special defined TCP/UDP port possesses
lower QoS traffic than Default class ( all other TCP/UDP ports such as port
81,82,83,84,85, etc.). Giving an example, when we transmit TCP packets with
port number 80 at each of port 2 and port number 81 at port 3 to port 1 until
the congestion happens. The packets from port 3 will be dropped by port 1
because the TCP packets have port number 80 is high priority and will have
higher precedence to be sent out from port 1.
Parameter description:
Disable IP TCP/UDP Port Classification:
Belong to the QoS in L4. Just tick the option button and press <Apply>
button to have this function taken affect. Then, enter Custom L4 to
disable IP TCP/UDP port Classification for QoS.
Down prioritize web browsing, e-mail, FTP and news:
Belong to the QoS in L4. Just tick the option button and press <Apply>
button to have this function taken affect. Then, enter Custom L4 to set up
Special TCP/UDP port for QoS.
Prioritize IP Telephony (VoIP):
Belong to the QoS in L4. Just tick the option button and press <Apply>
button to have this function taken affect. Then, enter Custom L4 to set
up Special TCP/UDP port for QoS.
Prioritize iSCSI:
Belong to the QoS in L4. Just tick the option button and press <Apply>
button to have this function taken affect. Then, enter Custom L4 to set
up Special TCP/UDP port for QoS.
Prioritize web browsing, e-mail, FTP transfers and news:
Belong to the QoS in L4. Just tick the option button and press <Apply>
button to have this function taken affect. Then, enter Custom L4 to set
up Special TCP/UDP port for QoS.
Prioritize Streaming Audio/Video:
Belong to the QoS in L4. Just tick the option button and press <Apply>
button to have this function taken affect. Then, enter Custom L4 to set
up Special TCP/UDP port for QoS.