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Chapter 10 Quality of Service (QoS)
AMG1312-T Series User’s Guide
146
10.6.3 Automatic Priority Queue Assignment
If you enable QoS on the AMG1312-T Series, the AMG1312-T Series 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 AMG1312-T
Series. On the AMG1312-T Series, traffic assigned to higher priority queues gets through faster
while traffic in lower index queues is dropped if the network is congested.
Table 50 Internal Layer2 and Layer3 QoS Mapping
PRIORITY
QUEUE
LAYER 2 LAYER 3
IEEE 802.1P USER
PRIORITY
(ETHERNET
PRIORITY)
TOS (IP
PRECEDENCE)
DSCP
IP PACKET
LENGTH (BYTE)
0 1 0 000000
12
2 0 0 000000 >1100
3 3 1 001110
001100
001010
001000
250~1100
4 4 2 010110
010100
010010
010000
5 5 3 011110
011100
011010
011000
<250
6 6 4 100110
100100
100010
100000
5 101110
101000
7 7 6 110000
111000
7