ZyXEL P-2802HWL-I1 User Guide - Page 241
Configuring QoS General Screen
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Chapter 17 Quality of Service (QoS) 17.1.4 Automatical Priority Queue Assignment If you enable QoS on the ZyXEL Device, the ZyXEL Device can automatically base on the IEEE 802.1p priority level, IP precedence and/or packet length to assign priority to traffic which does not match a class. The following table shows you the internal layer-2 and layer-3 QoS mapping on the ZyXEL Device. On the ZyXEL Device, traffic assigned to higher priority queues gets through faster while traffic in lower index queues is dropped if the network is congested. Table 99 Internal Layer2 and Layer3 QoS Mapping LAYER 2 LAYER 3 PRIORITY QUEUE IEEE 802.1P USER PRIORITY (ETHERNET PRIORITY) TOS (IP PRECEDENCE) DSCP IP PACKET LENGTH (BYTE) 0 1 0 000000 1 2 2 0 0 000000 >1100 3 3 1 001110 250~1100 001100 001010 001000 4 4 2 010110 010100 010010 010000 5 5 3 011110 QoS to open the screen as shown next. Use this screen to enable or disable QoS, and select to have the ZyXEL Device automatically assign priority to traffic according to the IEEE 802.1p priority level, IP precedence and/or packet length. See Section 17.1 on page 239 for more information. P-2802H(W)(L)-I Series User's Guide 241