Signamax
™
065-7921PoE 12-Port 10/100/1000BaseT/TX Web Smart PoE Switch
68
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.
Fig. 4-15
Parameter description:
Quality of Service (QoS) Vlan Tag Configuration:
Used for setting up the QoS belongs to Vlan operation.
Port:
User can set up the port (1~12) respectively to let Vlan Tag QoS function work on
them. If you would like to set up all ports at a time, user is also allowed to choose
“All” in the selection list to simplify the procedure of configuration.
