Dell PowerConnect B-RX4 BigIron RX Configuration Guide (Supporting Multi-Servi - Page 563

QoS for the oversubscribed 16 x 10GE modules 18 To determine the weight of w3. 5 Weight of w3 1 + 5 + 1 + 5 +1 + 5 + 1 + 5 The weight of w3 is 20.8%. Consequently, w3 (Port 2 High Priority) will get 20.83% of the group port's total bandwidth if equal amounts of traffic are received from all eight weights. The values of the remaining weights are calculated to be the following: w0 = 4.17%, w1 = 20.83%, w2 = 4.17%, w4 = 4.17%, w5 = 20.83%, w6 = 4.17%, and w7 = 20.83% Egress port shaping The 16x10GE module is designed to provide port fairness, but the cost is a smaller number of usable queues per input port (on egress). Traffic received on a network port will be assigned to one of 2 egress queues with a specific drop precedence value. Table 95 identifies the profile used for network control traffic which is identified using an independent flag. TABLE 95 Qos profile QOS profile index QOS profile index (depending on Comments network port) Low priority DP1 Low priority DP1 Low priority DP1 Low priority DP0 Low priority DP0 High priority DP1 High priority DP1 High priority DP1 High priority DP0 0,1,2,3 0,1,2,3 0,1,2,3 4,5,6,7 4,5,6,7 8,9,10,11 8,9,10,11 8,9,10,11 12,13,14,15 Only used for control traffic Mirroring ports The 16x 10GE module supports mirroring, but with the following limitations: • A 16X10GE port cannot be configured as mirror port. • Only one port can be monitored at any time from ports 1 - 8, and one port can also be monitored at any time from ports 9 - 16. • The mirror port for ingress or egress should be the same port, they cannot be monitored on multiple separate mirror ports. • Mirror(analyzer) ports cannot be assigned to the 16x10GE module. You can monitor traffic on 16x10 ports. BigIron RX Series Configuration Guide 491 53-1001810-01