Assigning A Dscp Policy Based On The Source-Port; Steps For Creating A Policy Based On Source-Port Classifiers - HP PROCURVE 2610 Advanced Traffic Management Manual

Quality of Service (QoS): Managing Bandwidth More Effectively
Using QoS Classifiers To Configure QoS for Outbound Traffic

Assigning a DSCP Policy Based on the Source-Port

This option assigns a previously configured DSCP policy (codepoint and
802.1p priority) to outbound IP packets (received from the specified source-
ports). That is, the switch:
1. Selects an incoming IP packet on the basis of its source-port on the switch.
2. Overwrites the packet's DSCP with the DSCP configured in the switch for
3. Assigns the 802.1p priority configured in the switch for the new DSCP.
4. Forwards the packet through the appropriate outbound port queue.
N o t e
On switches covered in this guide, "mixing" ToS DSCP policies and 802.1p
priorities is not recommended. Refer to the Note on page 6-10.
For more on DSCP, refer to "Terminology" on page 6-6.

Steps for Creating a Policy Based on Source-Port Classifiers

N o t e
You can select one DSCP per source-port. Also, configuring a new DSCP for
a source-port automatically overwrites (replaces) any previous DSCP or
802.1p priority configuration for that port.)
1. Identify the source-port classifier to which you want to assign a DSCP
2. Determine the DSCP policy for packets having the selected source-port:
3. Configure the DSCP policy by using qos dscp-map to configure the priority
6-54
such packets.
(Refer to "Differentiated Services Codepoint (DSCP) Mapping" on page
6-58.)
policy.
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 through the source-port from upstream devices.)
b. Determine the 802.1p priority you want to assign to the DSCP.
for each codepoint. (For details, refer to the example later in this section
and to "Differentiated Services Codepoint (DSCP) Mapping" on page
6-58.)