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Select Departure Path Using Output Switch

5-5

Select Departure Path Using Output Switch

In this section...

“Role of the Output Switch” on page 5-5

“Sample Use Cases” on page 5-5

“Select the First Available Server” on page 5-6

“Use an Attribute to Select an Output Port” on page 5-8

Role of the Output Switch

The block in the Routing library selects one among a number of entity output ports. The

selected port can change during the simulation. You have several options for criteria that

the block uses to select an entity output port.

When the selected port is not blocked, an arriving entity departs through this port.

Sample Use Cases

Here are some scenarios in which you might use an output switch:

• Entities advance to one of several queues based on efficiency or fairness concerns. For

example, airplanes advance to one of several runways depending on queue length, or

customers advance to the first available cashier out of several cashiers.

Comparing different approaches to efficiency or fairness, by testing different rules to

determine the selected output port of the output switch, might be part of your goal in

simulating the system.

• Entities advance to a specific destination based on their characteristics. For example,

parcels advance to one of several delivery vehicles based on the locations of the

specified recipients.

• Entities use an alternate route in case the preferred route is blocked. For example, a

communications network drops a packet if the route to the transmitter is blocked and

the simulation gathers statistics about dropped packets.

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MATLAB SIMEVENTS RELEASE NOTES Betriebsanweisung Seite 95