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Chapter 11 Quality of Service (QoS)
through faster while traffic in lower index queues is dropped if the network is
congested.
Table 43 Internal Layer2 and Layer3 QoS Mapping
PRIORITY
QUEUE
0
1
2
3
4
5
6
7
138
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
NVG2053 User's Guide
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