What is the meaning of the Intended and Offered Load, Forwarding Rate?


I provide explanation of difference between Intended and Offered load and Forwarding Rates:


I note that the Intended load is what is being asked of the test, versus Offered load which is what the actual physical layer can do. Offered load is what should actual be transmitted.

 

The Intended Load is the number of frames per second in which an external source attempts to send to a DUT/SUT for forwarding to a specified output interface(s)."

 

The Offered Load is the number of frames per second that an external source can send to a DUT/SUT for forwarding to a specified output interface(s).

 

Note: 'There may occur an issue where -> Offered Load appears far too much lower than Intended Load.

  

I explain this may be causes when choosing -> Test Parameters -> Improve Time to Test -> Skip to next load when iteration fails.

  

When there is packet loss and because the iteration is configured due to this configuration to abruptly end, the configured rate is not caught by the analyzer.

 

If this is a concern, I recommend to deselect -> Test Parameters -> Improve Time to Test -> Skip to next load when iteration fails and retest in the same manner.'

 

The Forwarding Rate is the number of frames per second that a device can successfully send to the correct destination interface in response to a specified offered load.

 

The throughput is the fastest rate (Offered Load) at which the count of test frames transmitted by the DUT is equal to the number of test frames sent to it by the test equipment.



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