Compex sxp2224wm User Manual page 38

Chapter 6 Configure Compex SXP2224WM using Web Interface
QoS Mode section
This mode will affect the levels (high or low) of all priority configuration.
Static Port Ingress Priority section
By default, the setting in the Static Port Ingress Priority is "Off". At this stage, the
switch will appoint the packets to low priorities.
If a normal packet is transmitted from a "high" or "low" setting port, Compex
SXP2224WM will deliver all the packets to its designated port according to the QoS
mode ratio setting.
802.1p* Priority section
If a tagged packet is being transmitted from any port, it will directs the packet to the
global setting. A tagged packet consists up to 8 traffic classes, ranging from 0 to 7.
The traffic classes can be set using switches, routers, servers or desktop systems.
Based on the tagged traffic classes, Compex SXP2224WM will then check the
priority values from the global setting, distribute the packets according the QoS mode
ratio setting to their designated ports respectively.
By default, the setting for 802.1p Priority is 4 high priority (7 to 4) and 4 low priority
(3 to 0). Please refer to Figure 6.6a.
Kindly note that the configuration in the Static Port Ingress Priority section does not
affect the global setting, and vice versa. This means that the global setting will still
remains as it is.
*802.1p is an IEEE standard for providing quality of service (QoS) in Ethernet
networks. It uses tagged packets and allows switches to transmit packets based on the
tagged priority value.
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