HP ProCurve Series 6120 Blade Switches Advanced Traffic Management Guide

5-20
Quality of Service (QoS): Managing Bandwidth More Effectively
Using QoS Classifiers To Configure Quality of Service for Outbound Traffic
Steps for Creating a DSCP Policy Based on TCP/UDP Port Number
Classifiers. This procedure creates a DSCP policy for IPv4 packets carrying
the selected UDP or TCP port-number classifier.
1. Identify the TCP or UDP port-number classifier you want to use for
assigning a DSCP policy.
2. Determine the DSCP policy for packets carrying the selected TCP or UDP
port number.
a. Determine the DSCP you want to assign to the selected packets. (This
codepoint will be used to overwrite (re-mark) the DSCP carried in
packets received from upstream devices.)
b. Determine the 802.1p priority you want to assign to the DSCP.
3. Configure the DSCP policy by using qos dscp-map to configure the priority
to the codepoint you selected in step 2a. (See “Differentiated Services
Codepoint (DSCP) Mapping” on page 5-51 for more information.)
4. Configure the switch to assign the DSCP policy to packets with the
specified TCP or UDP port number.
Syntax: qos < udp-port | tcp-port > < tcp or udp port number | range <start end >>
dscp < codepoint >
Assigns a DSCP policy to outbound packets having the
specified TCP or UDP application port number and
overwrites the DSCP in these packets with the assigned
<codepoint > value. This policy includes an 802.1p pri-
ority and determines the packet’s queue in the out-
bound port to which it is sent. (The
<codepoint > must be
configured with an 802.1p setting. See step 3 on page
5-20.) If the packet leaves the switch on a tagged port,
it carries the 802.1p priority with it to the next down-
stream device. (Default:
No-override)
range <start end >specifies a range of TCP/UDP ports; see
“Operating Notes on Using TCP/UDP Port Ranges” on
page 5-18. If you specify a range, the minimum port
number must precede the maximum port number in
the range.