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Question 104 - HPE2-W09 discussion

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Is this a use case for disabling split-recovery mode on ArubaOS-CX switches in a Virtual Switching

Extension (VSX) fabric?

Solution: You want to prevent any possibility of a split brain situation from occurring if the keepalive link fails some time after the ISL.

A.
Yes
Answers
A.
Yes
B.
No
Answers
B.
No
Suggested answer: A

Explanation:

Split-recovery mode is a feature of ArubaOS-CX that prevents traffic loss when the ISL goes out-ofsync and keepalive subsequently fails12. This can happen if the ISL is restored after a failure but the VSX nodes are not synchronized. Split-recovery mode enables the secondary switch to restore its VSX LAGs after 10 keepalive packets are missed, approximately 10 seconds after keepalive goes down2. This avoids a split brain situation where both switches act as primary and forward traffic independently, causing loops and duplicate packets1. Therefore, disabling split-recovery mode is not a use case for preventing split brain situations, and the correct answer is yes. For more information on split-recovery mode and VSX, refer to the Aruba Data Center Network Specialist (ADCNS) certification datasheet3 and the Virtual Switching Extension (VSX) Guide for your switch model2.

asked 16/09/2024
Tsige Tessema
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