To Next Page

To Previous Page

5-82

Quality of Service: Managing Bandwidth More Effectively

Advanced Classifier-Based QoS

Override of Global QoS Settings

After you apply a QoS policy to an interface, the classifier-based settings

configured by QoS actions in the policy override any 802.1p CoS or DSCP

codepoint values that were globally-configured on the switch to mark packets

using the QoS commands described in “Globally-Configured QoS” on page

5-16.

If you use a classifier-based QoS configuration along with globally-configured

QoS commands, the order of precedence in which 802.1p priority, IP prece-

dence, and DSCP settings mark selected packets is as follows, from highest

(1) to lowest (9):

Table 5-10. Order of Precedence for Classifier-Based QoS over Global QoS

Precedence

Order

QoS Feature Reference

1 Classifier-based port-specific policy Page 5-72

2 Classifier-based VLAN-specific policy Page 5-72

3 Globally-configured TCP/UDP priority Page 5-21

4 Globally-configured IP-device priority Page 5-32

5 Globally-configured IP Type-of-Service priority Page 5-40

6 Globally-configured Layer 3-Protocol priority Page 5-53

7 Globally-configured VLAN-ID priority Page 5-55

8 Globally-configured Source-Port priority Page 5-62

9 802.1p CoS in Layer 2 VLAN header

Page 5-9

In a tagged VLAN environment, the incoming 802.1p priority is used as the default QoS

classifier to determine how a packet is handled if no global or classifier-based QoS match

criterion with a higher precedence matches.

Other manuals for HP 3500 Series

Questions and Answers:

Need help?

Do you have a question about the HP 3500 Series and is the answer not in the manual?

General