3Com Switch 7750 Configuration Guide Guide

Configuring Priority to Be Used When a Packet Enters an Output Queue 623
Configuring Priority to
Be Used When a Packet
Enters an Output Queue
You can select the corresponding priority as the basis for a packet to enter an
output queue on a port as required.
7 7
Table 490 The mapping relationship between the local precedence values and queues
Local precedence Queue
0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
Table 491 The mapping relationship between IP precedence values and queues
IP precedence Queue
0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
Table 492 The mapping relationship between DSCP precedence values and queues
DSCP precedence
value
Name of type-A I/O
Module
Name of
non-type-A I/O
Module
Queue
0 to 7 be(0) be(0) 0
8 to 15 cs1(8), af1(10)
cs1(8), af11(10),
af12(12), af13(14)
1
16 to 23 cs2(16), af2(18)
cs2(16), af21(18),
af22(20), af23(22)
2
24 to 31 cs3(24), af3(26)
cs3(24), af31(26),
af32(28), af33(30)
3
32 to 39 cs4(32), af4(34)
cs4(32), af41(34) ,
af42(36) , af43(38)
4
40 to 47 cs5(40), ef(46) cs5(40), ef(46) 5
47 to 55 cs6(48) cs6(48) 6
56 to 63 cs7(56) cs7(56) 7
Table 489 The mapping relationship between the 802.1p priority values and queues
802.1p priority Queue