HP 6120XG HP ProCurve Series 6120 Blade Switches Advanced Traffic Management G - Page 240

Quality of Service (QoS): Managing Bandwidth More Effectively QoS Queue Configuration Mapping of Outbound Port Queues. The default mapping of 802.1p priorities to outbound port queues is shown in Table 5-10. Table 5-10. Mapping of Outbound Queues 802.1p Priority 1 (lowest) 2 0 (normal) 3 4 5 6 7 (highest) 8 Queues (default) 1 2 3 4 5 6 7 8 4 Queues 1 2 3 4 2 Queues 1 2 Impact of QoS Queue Configuration on Guaranteed Minimum Bandwidth (GMB). Changing the number of queues removes any bandwidth-min output settings in the startup configuration, and automatically re-allocates the GMB per queue as shown in Table 5-11. For the switches covered in this guide, the actual minimum guaranteed bandwidth allocated for each queue is accurate to +/- six percent of the expected value. Table 5-11. Default GMB Percentage Allocations per QoS Queue Configuration 802.1p Priority 1 (lowest) 2 0 (normal) 3 4 5 6 7 (highest) 8 Queues (default) Queue GMB 1 2% 2 3% 3 30% 4 10% 5 10% 6 10% 7 15% 8 20% 4 Queues Queue GMB 1 8% 2 17% 3 30% 4 45% 2 Queues Queue GMB 1 20% 2 80% Note For more information on configuring GMB, refer to the chapter titled "Port Traffic Controls" in the Management and Configuration Guide. 5-64