3Com Switch 7750 Configuration Guide

Configuring Priority to Be Used When a Packet Enters an Output Queue 667
Configuration example
■ Set the port priority of Ethernet 2/0/1 to 7.
Configuration procedure:
<SW7750> system-view
[SW7750] interface Ethernet 2/0/1
[SW7750-Ethernet2/0/1] priority 7
Configuring Priority to
Be Used When a
Packet Enters an
Output Queue
When congestion occurs in the network, queue scheduling is generally adopted to
solve the problem that multiple packets compete for resources.
A port of the switch supports eight output queues. The priority of each queue is
different, and packets in the queue with higher priority are sent preferentially. The
switch puts a packet into the corresponding queue according to the DSCP
precedence, IP precedence, 802.1p priority or local precedence of the packet. The
mapping relationship between precedence values and queues are shown in
Table 533, Table 534, Table 535, and Table 536.
Enter Ethernet port view interface interface-type
interface-number
-
Set the port priority priority priority-level Optional
By default, the port priority is
0
Table 532 Set to use the port priority
Operation Command Description
Table 533 The mapping relationship between the 802.1p priority values and queues
802.1p priority Queue
0 2
1 0
2 1
3 3
4 4
5 5
6 6
7 7
Table 534 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