HP ProCurve Series 6120 Blade Switches Advanced Traffic Management Guide

5-44
Quality of Service (QoS): Managing Bandwidth More Effectively
Using QoS Classifiers To Configure Quality of Service for Outbound Traffic
Steps for Creating a Policy Based on VLAN-ID Classifier.
1. Determine the VLAN-ID classifier to which you want to assign a DSCP
policy.
2. Determine the DSCP policy for packets carrying the selected VLAN-ID:
a. Determine the DSCP you want to assign to the selected packets. (This
codepoint will be used to overwrite 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
for each codepoint. (See “Differentiated Services Codepoint (DSCP) Map-
ping” on page 5-51 for more information.)
4. Configure the switch to assign the DSCP policy to packets with the
specified VLAN-ID.
For example, suppose you wanted to assign this set of priorities:
Syntax: vlan < vid > qos dscp < codepoint >
Assigns a DSCP policy to packets carrying the specified
VLAN-ID, and overwrites the DSCP in these packets with the
assigned < codepoint > value. This policy includes an 802.1p
priority and determines the packet’s queue in the outbound
port to which it is sent. If the packet leaves the switch on a
tagged port, it carries the 802.1p priority with it to the next
downstream device. (Default: No-override)
Syntax: no vlan < vid > qos
Removes QoS classifier for the specified VLAN.
Syntax: show qos vlan-priority
Displays a listing of all QoS VLAN-ID classifiers currently
in the running-config file.
VLAN-ID DSCP Priority
40 15 7
30 16 5
20 17 1
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