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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.