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Introduction to CoS on Ethernet IQ2 Interfaces

Gigabit Ethernet Intelligent Queuing 2 (IQ2) 4-port and 8-port Type 2 PICs are oversubscribed, which means the amount of traffic coming to the PIC can be more than the maximum bandwidth from the PIC to the Flexible PIC Concentrator (FPC).

By default, the T-series, MX-series, and M320 routing platforms are restricted to a maximum of four egress queues per interface. Some PICs, such as the IQ2 and Enhanced IQ2 (IQ2E) PICs, have eight egress queues enabled by default on platforms that support eight queues. You configure the number of egress queues as four or eight by including the max-queues-per-interface statement at the [edit chassis fpc slot-number pic pic-slot-number] hierarchy level:



[edit chassis fpc slot-number pic pic-slot-number]

max-queues-per-interface (4 | 8);

The numerical value can be 4 or 8.

For more information about configuring egress queues, see Enabling Eight Queues on Interfaces.

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