Netgear 7300S User Manual download pdf (Page 292)

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

11-28 Quality of Service (QoS) Commands

202-10088-01, March 2005

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.

Format

randomdrop <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.

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Netgear 7300S User Manual Page 292