Automatic Priority Queue Assignment - ZyXEL Communications AMG1001-T Series User Manual

Chapter 11 Quality of Service (QoS)

11.3.3 Automatic Priority Queue Assignment

If you enable QoS on the AMG1001-T/AMG1011-T, the AMG1001-T/AMG1011-T 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 AMG1001-T/
AMG1011-T. On the AMG1001-T/AMG1011-T, 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
80
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
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
AMG1001-T/AMG1011-T Series User's Guide