ProCurve 2610-PWR Technical Information download pdf (Page 233)

Quality of Service (QoS): Managing Bandwidth More Effectively

Using QoS Classifiers To Configure QoS for Outbound Traffic

The specified DSCP policies

overwrite the original DSCPs

on the selected packets, and

use the 802.1p priorities

previously configured in the

DSCP policies in step 2.

Figure 6-20. Example of Policy Assignment to Outbound Packets on the Basis of the DSCP in the Packets

Received from Upstream Devices

Details of QoS IP Type-of-Service

IP packets include a Type of Service (ToS) byte. The ToS byte includes:

■ A Differentiated Services Codepoint (DSCP): This element is com-

prised of the upper six bits of the ToS byte). There are 64 possible

codepoints. In the switches covered by this manual, the default qos

configuration includes the codepoint having the 802.1p priority setting for

Expedited Forwarding, while all others, including the Assured-Forward-

ing codepoints, are unused (and listed with No-override for a Priority).

Refer to figure 6-11 on page 6-59 for an illustration of the default DSCP

policy table.

Using the qos dscp map command, you can configure the switch to assign

different prioritization policies to IPv4 packets having different code-

points. As an alternative, you can configure the switch to assign a new

codepoint to an IPv4 packet, along with a corresponding 802.1p priority

(0-7). To use this option in the simplest case, you would:

a. Configure a specific DSCP with a specific priority in an edge switch.

6-43

1 2 ... 228 229 230 231 232 233 234 235 236 237 238 ... 363 364

No comments

ProCurve 2610-PWR Technical Information Page 233