NETGEAR NETGEAR user manual Shape average, Shape peak

User Manual for the NETGEAR 7300S Series Layer 3 Managed Switch Software

The remaining parameters are all optional. The fourth data parameter is the sampling rate, indicating the period at which the queue is sampled for computing the average depth. Expressed in microseconds, the sampling rate is an integer from 0 to 1000000, with a default of 0 (meaning per- packet sampling). The last parameter is the decay exponent, which determines how quickly the average queue length calculation decays over time, with a higher number producing a faster rate of decay. This value is an integer from 0 to 16, with a default of 9.

Note: The last two parameters, namely sampling rate and decay exponent, are hierarchically specified in this command. That is, in order to provide a value for the decay exponent <0-16>, the user is required to also specify a sampling rate <0-1000000>for proper command interpretation.

Formatrandomdrop <1-250000> <1-500000> <0-100> [<0-1000000> [<0-16>]]

Mode	Policy-classmap Config
Policy Type	Out
shape average

This command is used to establish average rate traffic shaping for the specified class, which limits transmissions for the class to the committed information rate, with excess traffic delayed via queueing. The committed information rate is specified in kilobits-per-second (Kbps) and is an integer from 1 to 4294967295.

Note: Queue depth management defaults to tail drop, but the randomdrop command can be used to change to a RED scheme.

Format	shape average <1-4294967295>
Mode	Policy-classmap Config
Restrictions	This shaping rate must not exceed the maximum link data rate of
	the interface to which the policy is applied.
Policy Type	Out
shape peak

This command is used to establish peak rate traffic shaping for the specified class, which allows transmissions for the class to exceed the committed information rate by sending excess traffic with the understanding that it could be dropped by a downstream network element. Two rate parameters are used, a committed information rate and a peak information rate. Each of these rates is specified in kilobits-per-second (Kbps) and is an integer from 1 to 4294967295. The peak rate must be specified as equal to or greater than the committed rate.

11-28 Quality of Service (QoS) Commands

202-10088-01, March 2005