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Question 177 - NCS-Core discussion

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After installation, network ports are properly configured with the default active-backup bonding.

One 10GbE port goes to switch 1. Another 10GbE port goes to switch 2. A consultant tests failover by manually pulling one of the cables and notices it is taking too much time to failover, which is causing excessive packet loss.

What should the consultant enable to resolve this issue?

A.
LACP on switch
Answers
A.
LACP on switch
B.
PAgP
Answers
B.
PAgP
C.
Portfast
Answers
C.
Portfast
D.
Jumbo frames
Answers
D.
Jumbo frames
Suggested answer: C

Explanation:

In this scenario, the delay and packet loss during failover when one of the network cables is disconnected can be addressed by enabling 'Portfast' on the switch ports connected to the Nutanix nodes. Portfast is a Cisco network switch feature that allows network switches to immediately bring ports into the forwarding state during connectivity changes, bypassing the usual listening and learning states of Spanning Tree Protocol (STP). This significantly reduces the time to re-establish network connectivity, thereby minimizing the packet loss during such failover events. Enabling Portfast is crucial for endpoints like servers where quick recovery from disconnections is necessary.

Reference: Cisco Networking Academy materials on STP and Portfast, Nutanix Bible.

asked 23/09/2024
Martinho Hinterholz
34 questions
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