3Com Switch 7754, Configuration Manual

Page: 668 / 940

668 C
HAPTER
61: Q
O
S C
ONFIGURATION
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.
Configuration prerequisites
The priority to be used when a packet enter a queue is specified.
Configuration procedure
7 7
Table 535 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 536 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 534 The mapping relationship between the local precedence values and queues
Local precedence Queue
Table 537 Configure the priority to be used when a packet enters a queue
Operation Command Description
Enter system view system-view -
Configure the priority to be
used when a packet enters an
output queue priority-trust { dscp |
ip-precedence | cos |
local-precedence }
Required
By default, the local
precedence is used when a
packet enter an output queue