Quality of service (QoS) configuration for network devices with multiple queues

摘要

A network device implements automatic configuration of Quality of Service (QoS) parameters in response to operator specification of a relatively few and easily understandable “high level” parameters such as, for example, latency requirements or an acceptable rate of packet drops. In one implementation, a network device may receive user preference information that relates to a Quality of Service (QoS) for network traffic passing through the network device and may measure traffic patterns through the network device. The device further generates a configuration template based on the measured traffic patterns and on the user preference information transmit the data in an order of transmission that is prioritized according to a bandwidth allocation policy defined by the configuration template.

主权项

1. A method comprising:
setting, by a device, a first queue, of a plurality of queues, as an active queue; calculating, by the device, an average traffic rate through the first queue,
the calculating including:
setting the first queue to a first rate limit;measuring a drop rate of the first queue based on the first rate limit;lowering the first rate limit;measuring the drop rate resulting from lowering the first rate limit; andusing the drop rate resulting from lowering the first rate limit when calculating the average traffic rate; measuring, by the device and using the average traffic rate, traffic patterns through the device; configuring, by the device, one or more policies based on the measured traffic patterns and information relating to network traffic passing through the device; and routing, by the device, traffic through the device based on the configured one or more policies.