HP 6120XG HP ProCurve Series 6120 Blade Switches Advanced Traffic Management G - Page 201
qos dscp-map, No-override, Priority, show qos dscp-map
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Quality of Service (QoS): Managing Bandwidth More Effectively Using QoS Classifiers to Configure Quality of Service for Outbound Traffic 3. Configure the DSCP policy by using qos dscp-map to configure the priority for each codepoint. (For details, refer to the example later in this section and to "Differentiated Services Codepoint (DSCP) Mapping" on page 5-33.) Note A codepoint must have an 802.1p priority assignment (0 - 7) before you can configure that codepoint as a criteria for prioritizing packets by source-port. If a codepoint shows No-override in the Priority column of the DSCP Policy Table (show qos dscp-map), then you must assign a 0 - 7 priority before proceeding. 4. Configure the switch to assign the DSCP policy to packets from the specified source-port. Syntax: qos dscp-map < codepoint > priority < 0 - 7 > This command is optional if a priority has already been assigned to the < codepoint >. The command creates a DSCP policy by assigning an 802.1p priority to a specific DSCP. When the switch applies this priority to a packet, the priority determines the packet's queue in the outbound port to which it is sent. If the packet leaves the switch on a tagged port, it carries the 802.1p priority with it to the next downstream device. (Default: For most codepoints, No-override. See figure 5-9 on page 5-34 on page 5-34.) Syntax: interface < port-list > qos dscp < codepoint > Assigns a DSCP policy to packets from the specified sourceport(s), and overwrites the DSCP in these packets with the assigned < codepoint > value. This policy includes an 802.1p priority and determines the packet's queue in the outbound port to which it is sent. If the packet leaves the switch on a tagged port, it carries the 802.1p priority with it to the next downstream device. (Default: No-override) Syntax: no interface [e] < port-list > qos Removes QoS classifier for the specified source-port(s). Syntax: show qos source-port Displays a listing of all source-port QoS classifiers currently in the running-config file. 5-30