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HP Exam HPE2-W09 Topic 5 Question 42 Discussion

Actual exam question for HP's HPE2-W09 exam
Question #: 42
Topic #: 5
[All HPE2-W09 Questions]

Is this a requirement for implementing Priority Flow Control (PFC) on an ArubaOS-CX switch interface?

Solution: configuring a DCBX application priority on the interface

Show Suggested Answer Hide Answer
Suggested Answer: A

Priority Flow Control (PFC) is a feature of ArubaOS-CX that eliminates packet loss due to congestion on a network link1.PFC uses IEEE 802.1Qbb standard to pause traffic on a per-priority basis1.PFC can be configured to operate in symmetric or asymmetric mode1.Symmetric mode applies PFC to both the receiving and sending of pause frames1.Asymmetric mode applies PFC to either the receiving or sending of pause frames1.To configure PFC on an interface, you need to enable flow control with a priority value and configure a DCBX application priority on the interface1.A DCBX application priority maps a traffic class to a priority group and enables the switch to negotiate PFC parameters with the peer device1. Therefore, this is a requirement for implementing PFC on an ArubaOS-CX switch interface, and the correct answer is yes.For more information on PFC and DCBX, refer to the Aruba Data Center Network Specialist (ADCNS) certification datasheet2and the QoS Guide for your switch model1.


by Ozell at May 24, 2023, 03:14 PM

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