HP 6120XG HP ProCurve Series 6120 Blade Switches Advanced Traffic Management G - Page 206

Quality of Service (QoS): Managing Bandwidth More Effectively Differentiated Services Codepoint (DSCP) Mapping For example, in the default configuration, the following codepoint settings are true: Codepoint 001100 001101 001110 Default Priority 1 No-override 2 If you change all three settings to a priority of 3, and then execute write memory, the switch will reflect these changes in the show config listing: ProCurve (config)# qos dscp-map 001100 priority 3 ProCurve (config)# qos dscp-map 001101 priority 3 ProCurve (config)# qos dscp-map 001110 priority 3 ProCurve (config)# write memory ProCurve (config)# show config Configure these three codepoints with non-default priorities. Startup configuration: ; 498358-B21 Configuration Editor; Created on release #Z.14.XX hostname "ProCurve 6120G/XG Blade Switch" qos dscp-map 001100 priority 3 qos dscp-map 001101 priority 3 qos dscp-map 001110 priority 3 interface D1 Show config lists the non default codepoint settings. . . . Figure 5-16. Example of Show Config Listing with Non-Default Priority Settings in the DSCP Table Effect of "No-override". In the QoS Type-of-Service differentiated services mode, a No-override assignment for the codepoint of an outbound packet means that QoS is effectively disabled for such packets. That is, QoS does not affect the packet priority or VLAN tagging. In this case, the packets are handled as follows (as long as no other QoS feature creates priority assignments for them): 802.1Q Status Received and Forwarded on a tagged port member of a VLAN. Received on an Untagged port member of a VLAN; Forwarded on a tagged port member of a VLAN. Forwarded on an Untagged port member of a VLAN. Outbound 802.1p Priority Unchanged 0 (zero)-"normal" None 5-35