HP 6120XG HP ProCurve Series 6120 Blade Switches Advanced Traffic Management G - Page 184
Viewing the QoS Configuration, No Override
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Quality of Service (QoS): Managing Bandwidth More Effectively Preparation for Configuring QoS Viewing the QoS Configuration The following show commands are available on the switches covered in this guide. Examples of the show qos output are included with the example for each priority type. Syntax: show qos < priority-classifier > dscp-map Show mappings between DSCP policy and 802.1p priority. port-priority Displays the current source-port priority configuration. Refer to figure 5-11 on page 5-28. type-of-service Displays the current type-of-service priority configuration. The display output differs according to the ToS option used: ■ IP Precedence: Refer to figure 5-3 on page 5-16. ■ Diffserve: Refer to figure 5-5 on page 5-19. No Override By default, the IP ToS, Protocol, and (source) port show outputs automatically list No-override for priority options that have not been configured. This means that if you do not configure a priority for a specific option, QoS does not prioritize packets to which that option applies, resulting in the No override state. In this case, IP packets received through a VLAN-tagged port receive whatever 802.1p priority they carry in the 802.1Q tag in the packet's header. VLAN-Tagged packets received through an untagged port are handled in the switch with "normal" priority. 5-13