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HP Exam HPE2-W09 Topic 1 Question 59 Discussion

Actual exam question for HP's HPE2-W09 exam
Question #: 59
Topic #: 1
[All HPE2-W09 Questions]

The architect designs a spine and leaf network for a single data center that will use multiple leaf switches as Virtual Tunnel End Points (VTEP). The architect needs to select the type of Integrated Routing & Bridging (IRB) for the solution.

Is this statement about the IRB type true?

Solution: In the Asymmetric IRB egress VTEPs bridge the traffic to the destination networks.

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 Jules at May 10, 2024, 02:51 PM

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Felicitas
1 years ago
I felt the question was tricky. I hope 'No' is the right answer.
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Sarina
1 years ago
I also went with 'Yes'. Read something similar in the study guide.
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Mauricio
1 years ago
I put 'B) No'. I think PFC can be configured without that.
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Marisha
1 years ago
I chose 'A) Yes' because configuring DCBX seems crucial for PFC.
upvoted 0 times
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Felicitas
1 years ago
Yeah, I wasn't sure if DCBX application priority was needed.
upvoted 0 times
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Sarina
1 years ago
Hey, that PFC question in the exam was tough.
upvoted 0 times
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