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Configuring FIFO queuing on Cisco routers

For configuring FIFO queuing strategy the Cisco IOS does not provide any explicit commands. The main configuration of FIFO on specific interface is done when you will turn off any other queuing method. For example, default queuing method on serial interfaces running at E1 speed and slower is WFQ. To enable FIFO you must first disable WFQ using following command:

router(config-if)#no fair-queue

If other queuing tools is used, you should also disable these too.

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