On Saturday, August 31, 2013 01:11:21 AM Robert Blayzor wrote: > Congestion management and congestion avoidance are moot > points if there is no congestion in the network.
In general, I'd say that QoS in over-engineered networks is helpful during transient spikes. I suspect that buffers will continue to get smaller as line cards get bigger (think 100Gbps, 400Gbps, 1Tbps, e.t.c. interfaces), as queueing delay should not be as big an issue on those line cards as it is on, say 2.5Gbps, 1Gbps, 622Mbps, 155Mbps, 100Mbps, E3/DS3 or E1/T1 ports. Otherwise, if your network is over-supplied, QoS will just help with other things like packet marking, packet matching and actions that can be taken from those results which don't necessarily relate to congestion management. Mark.
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