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QoS Types for Prioritizing Outbound Packets . . . . . . . . . . . . . . . . . . . 6-9
Packet Types and Evaluation Order . . . . . . . . . . . . . . . . . . . . . . . 6-10
Preparation for Configuring QoS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13
Steps for Configuring QoS on the Switch . . . . . . . . . . . . . . . . . . . 6-13
Planning a QoS Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
Prioritizing and Monitoring QoS Configuration Options . . . . . . 6-15
QoS Resource Usage and Monitoring . . . . . . . . . . . . . . . . . . . . . . 6-15
Planning and Monitoring Rule Usage . . . . . . . . . . . . . . . . . . . . . . 6-16
Managing QoS Resource Consumption . . . . . . . . . . . . . . . . . . . . . 6-16
Troubleshooting a Shortage of Resources . . . . . . . . . . . . . . . . . . 6-17
Using QoS Types To Configure QoS for Outbound Traffic . . . . . . . . . . . . 6-18
Viewing the QoS Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
No Override . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19
QoS UDP/TCP Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20
Assigning 802.1p Priority Based on TCP or UDP Port Number . 6-21
Assigning a DSCP Policy Based on TCP or UDP Port Number . 6-22
QoS IP-Device Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27
Assigning a Priority Based on IP Address . . . . . . . . . . . . . . . . . . . 6-28
Assigning a DSCP Policy Based on IP Address . . . . . . . . . . . . . . 6-29
QoS IP Type-of-Service (ToS) Policy and Priority . . . . . . . . . . . . . . . 6-33
Assigning an 802.1p Priority to IPv4 Packets on the Basis
of the ToS Precedence Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-34
Assigning an 802.1p Priority to IPv4 Packets on the Basis
of Incoming DSCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-35
Assigning a DSCP Policy on the Basis of the DSCP in IPv4
Packets Received from Upstream Devices . . . . . . . . . . . . . . . . . . 6-39
Details of QoS IP Type-of-Service . . . . . . . . . . . . . . . . . . . . . . . . . 6-43
QoS VLAN-ID (VID) Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-46
Assigning a Priority Based on VLAN-ID . . . . . . . . . . . . . . . . . . . . 6-46
Assigning a DSCP Policy Based on VLAN-ID (VID) . . . . . . . . . . . 6-48
QoS Interface (Source-Port) Priority . . . . . . . . . . . . . . . . . . . . . . . . . . 6-52
Assigning a Priority Based on Source-Port . . . . . . . . . . . . . . . . . . 6-52
Assigning a DSCP Policy Based on the Source-Port . . . . . . . . . . 6-54
Differentiated Services Codepoint (DSCP) Mapping . . . . . . . . . . . . . 6-58
Default Priority Settings for Selected Codepoints . . . . . . . . . . . . 6-59
Quickly Listing Non-Default Codepoint Settings . . . . . . . . . . . . . 6-60
Note On Changing a Priority Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-61
Example of Changing the Priority Setting on a Policy When
One or More QoS Types Are Currently Using the Policy . . . . . . 6-62
IP Multicast (IGMP) Interaction with QoS . . . . . . . . . . . . . . . . . . . . . . . . . 6-65
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