Netgear gsm7312 사용자 설명서

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Differentiated Services

This command changes the active queue depth management scheme from the default tail drop to 
RED. The 

and

 are the names of an existing DiffServ policy and 

class, respectively. The first two data parameters are the average queue depth minimum and 
maximum threshold values specified in bytes. The minimum threshold is an integer from 1 to 
250000. The maximum threshold is an integer from 1 to 500000, but it must be equal to or greater 
than the minimum threshold. The third data parameter is the maximum drop probability and is an 
integer from 0 to 100. It indicates the percentage likelihood that a packet will be dropped when the 
average queue depth reaches the maximum threshold value. 

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 

 for proper command interpretation. 

Out

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 

and

are the names of an existing DiffServ policy and 

class, respectively. 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 config diffserv policy randomdrop 
command can be used to change to a RED scheme.