qos statistics transmit 741

qos statistics transmit For CoreBuilder 9000: Applies to Layer 3 switching modules only.

3500

9000

9400

3900

9300

Displays QoS transmit statistics.

Valid Minimum Abbreviation

q s t

Important Considerations

The transmit statistics help you track bandwidth utilization and packet loss by physical port and queue (reserved, high, best, and low).

The RSVP and network control packets go out on the reserved queue.

When you mark any packet (conforming or excess) as loss eligible, the packet is dropped if the transmit queue for which it is destined is over its threshold. A packet that is marked loss-eligible falls into one of the two highLoss statistic categories:

If the transmit queue is not over its threshold, the packet is sent and counted as a highLossSent packet.

If the transmit queue is over its threshold, it is dropped and counted as a highLossDropped packet.

If you do not mark a packet as loss-eligible, it falls into one of the three lowLoss statistics.

If the queue is not over the threshold, it is counted as a lowLossSent.

If the queue is over its threshold, it is counted as lowLossDelayed.

If the queue is full, it is counted as lowLossDropped.

Loss-eligible packets are conforming packets that are discarded instead of queued when transmit queues back up beyond a threshold. You can specify whether conforming packets (as well as nonconforming excess packets) are loss-eligible when you define a control. Marking packets loss-eligible is useful to enable intelligent discard of traffic in a congestion situation. When the system is congested, you can decide which traffic can be discarded and mark that traffic as loss eligible.

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3Com 3500 manual Displays QoS transmit statistics