Quality of Service (QoS): Managing Bandwidth More Effectively
Contents
QoS IP Type-of-Service (ToS) Policy and Priority . . . . . . . . . . . . . . . 6-34
Assigning an 802.1p Priority to IPv4 Packets on the Basis of the ToS
Assigning an 802.1p Priority to IPv4 Packets on the Basis of Incoming
Assigning a DSCP Policy on the Basis of the DSCP in IPv4 Packets
Precedence Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-35
DSCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-36
Received from Upstream Devices . . . . . . . . . . . . . . . . . . . . . . . . . 6-40
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 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
Steps for Creating a Policy Based on Source-Port Classifiers . . 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
Effect of “No-override” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-61
Note On Changing a Priority Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-62
Example of Changing the Priority Setting on a Policy When One or
More Classifiers Are Currently Using the Policy . . . . . . . . . . . . . 6-62
IP Multicast (IGMP) Interaction with QoS . . . . . . . . . . . . . . . . . . . . . . . . . 6-65
QoS Messages in the CLI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-65
QoS Operating Notes and Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-66
6-2
To Next Page
Loading...
Need help?
General