3Com Switch 7750 Configuration Guide

676 CHAPTER 61: QOS CONFIGURATION
Configuration Procedure
acl-rule: Applied ACL rules which can be the combination of various ACL rules.
The way of combination is described in Table 541.
n
■ Only type-A I/O Modules support the configuration above.
■ Only the rules with the permit action can be properly applied to the hardware.
Configuration Example
■ Ethernet 2/0/1 is accessed to the network segment 10.1.1.1/24.
■ Perform the RED queue scheduling algorithm for all the inbound traffic from
10.1.1.1/24
■ Set the parameters as follows: the packets are dropped at random when the
queue length exceeds 64 KB, all packets are dropped when the queue length
exceeds 128 KB, and the drop probability is 20%.
Configuration procedure:
<SW7750> system-view
[SW7750] acl number 2000
[SW7750-acl-basic-2000] rule permit source 10.1.1.1 0.0.0.255
[SW7750-acl-basic-2000] quit
[SW7750] interface Ethernet 2/0/1
[SW7750-Ethernet2/0/1] qos
[SW7750-qoss-Ethernet2/0/1] traffic-red outbound ip-group 2000 64 128 20
Configuring Traffic
Statistics
Refer to “Traffic-based Traffic Statistics” on page 665 for the introduction to traffic
statistics.
Configuration
Prerequisites
■ ACL rules used for traffic identifying are defined. Refer to “Choosing ACL
Mode for Traffic Flows” on page 639 for defining ACL rules
■ The ports that needs this configuration are specified
Table 546 Configure RED parameters
Operation Command Description
Enter system view system-view -
Enter Ethernet port view interface interface-type
interface-number
-
Enter QoS view qos -
Configure parameters for the
RED algorithm
traffic-red outbound
acl-rule [ system-index
system-index ] qstart qstop
probability
Required
The maximum available
bandwidth must be no smaller
than the minimum assured
bandwidth.
Display the parameters for the
RED configuration
display qos-interface
[ interface-type
interface-number ]
traffic-red
Optional
You can execute the display
command in any view.
Display all the QoS settings on
the port
display qos-interface
[ interface-type
interface-number ] all