Exam 300-630 topic 1 question 76 discussion

Actual exam question from Cisco's 300-630

Question #: 76
Topic #: 1

[All 300-630 Questions]

Which action must be taken to connect two nonsilient servers in active/standby mode to two ACI leaves?

A. Implement a virtual PortChannel on ACI leaves
B. Enable ARP flooding for the bridge domain if the MAC address of the active interface changes after NIC failover
C. Configure ARP flooding for the bridge domain if the MAC address of the active interface stays identical after a NIC failover
D. Disable dataplane learning to avoid endpoint flapping

Show Suggested Answer

Suggested Answer: C 🗳️
Reference:
https://www.cisco.com/c/en/us/td/docs/dcn/whitepapers/cisco-application-centric-infrastructure-design-guide.html

by apot at Oct. 7, 2021, 9:03 p.m.

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DC4000

10 months, 1 week ago

B / ARP Flooding : ....With clustered servers or HA pairs of firewalls and load balancers, you need to configure ACI to flood Gratuitous ARP in a bridge domain, because after a failover, the same IP address may be using a different MAC address.In these scenarios, Gratuitous ARP (GARP) is used to update host ARP caches or router ARP caches, so in this case you should select the ARP flooding option in the bridge domain. FROM https://www.cisco.com/c/en/us/td/docs/dcn/whitepapers/cisco-application-centric-infrastructure-design-guide.html

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LordAndy

2 years, 7 months ago

Correct is B

upvoted 2 times

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apot

2 years, 8 months ago

I think D

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