3Com 7757 Configuration Manual page 668

668 C 61: Q S C
HAPTER O
Configuring Priority to
Be Used When a Packet
Enters an Output Queue
ONFIGURATION
Table 534 The mapping relationship between the local precedence values and queues
Local precedence
7
Table 535 The mapping relationship between IP precedence values and queues
IP precedence
0
1
2
3
4
5
6
7
Table 536 The mapping relationship between DSCP precedence values and queues
DSCP precedence
value
0 to 7
8 to 15
16 to 23
24 to 31
32 to 39
40 to 47
47 to 55
56 to 63
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
Table 537 Configure the priority to be used when a packet enters a queue
Operation
Enter system view
Configure the priority to be
used when a packet enters an
output queue
Queue
7
Queue
0
1
2
3
4
5
6
7
Name of
Name of type-A I/O non-type-A I/O
Module Module
be(0) be(0)
cs1(8), af1(10) cs1(8), af11(10),
af12(12), af13(14)
cs2(16), af2(18) cs2(16), af21(18),
af22(20), af23(22)
cs3(24), af3(26) cs3(24), af31(26),
af32(28), af33(30)
cs4(32), af4(34) cs4(32), af41(34) ,
af42(36) , af43(38)
cs5(40), ef(46) cs5(40), ef(46)
cs6(48) cs6(48)
cs7(56) cs7(56)
Command
system-view
priority-trust { dscp |
ip-precedence | cos |
local-precedence }
Queue
0
1
2
3
4
5
6
7
Description
-
Required
By default, the local
precedence is used when a
packet enter an output queue