TP-Link TL-SG3424 User Manual page 38

Bit 0, Bit 1, Bit 2:
According to the arrangement of Bit 5 ~ Bit 7 in TOS Field of IP Header,
it can form 8 kinds of traffics, including 0 0 0, 0 0 1, 0 1 0, 0 1 1, 1 0 0,
1 0 1, 1 1 0 and 1 1 1.
Class:
8 kinds of traffic as mentioned above, user can set up High Priority or
Low Priority for each port respectively.
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User Manual
Publication date: January, 2006
Revision A2
User Manual
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> button, and
then click <Advance >>> button. 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, click
button to set up Special TCP/UDP port 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, click
button 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, click
button 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, click
button 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, click
button to set up Special TCP/UDP port for QoS.
Publication date: January, 2006
Revision A2
68
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