Automatic Priority Queue Assignment; Table 30 Internal Layer2 And Layer3 Qos Mapping - ZyXEL Communications P-660RU-T1 v3 User Manual

11.3.3 Automatic 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 30 Internal Layer2 and Layer3 QoS Mapping

PRIORITY
QUEUE
0
1
2
3
4
5
6
7
P-660RU-Tx v3 User's Guide
LAYER 2 LAYER 3
IEEE 802.1P USER
PRIORITY TOS (IP
(ETHERNET PRECEDENCE)
PRIORITY)
1 0
2
0 0
3 1
4 2
5 3
6 4
5
7 6
7
Chapter 11 Quality of Service (QoS)
IP PACKET
DSCP
LENGTH (BYTE)
000000
000000 >1100
001110 250~1100
001100
001010
001000
010110
010100
010010
010000
011110 <250
011100
011010
011000
100110
100100
100010
100000
101110
101000
110000
111000
105