HP 6120XG HP ProCurve Series 6120 Blade Switches Advanced Traffic Management G - Page 249

Note Quality of Service (QoS): Managing Bandwidth More Effectively QoS Queue Configuration Before changing the traffic groups' priority mappings from the defaults, it is important to examine the current policies that act on 802.1p priorities to ensure that the policies best serve the behavior desired on the network, including DSCP, VLAN, interface, or protocol rules. ProCurve(cfg-tcgt-example)# show qos traffic-template example TRAFFIC-TEMPLATE: example Status : Valid Queue-no -------1 2 3 4 Priorities 0,1,2 3 4,5 6,7 Name background-tcg best-effort-tcg controlled-load-tcg control-tcg ProCurve(cfg-tcgt-example)# no map-traffic-group 1 priority 0 Figure 5-33. Example of Removing Priorities from a Traffic Group After removing the priority from the currently mapped queue, the template becomes invalid because priority 0 is no longer mapped to any queue. ProCurve(cfg-tcgt-example)# show qos traffic-template example TRAFFIC-TEMPLATE: example Status : Invalid Queue-no -------1 2 3 4 Priorities 1,2 3 4,5 6,7 Name background-tcg best-effort-tcg controlled-load-tcg control-tcg Figure 5-34. Example of Invalid Traffic Template Because a Priority is Unmapped Mapping the priority to a new queue results in a valid traffic template. 5-69