Exam 300-430 topic 1 question 246 discussion

Actual exam question from Cisco's 300-430

Question #: 246
Topic #: 1

An engineer configures Cisco CMX. which uses Layer 2 high availability on primary and secondary CMX instances, according to these specifications:

• Primary CMX IP address: 192.168.1.4/24
• Secondary CMX IP address: 192.168.4.4/24
• Virtual IP address: 192.168.4.1/24

During testing, the engineer discovers that the failover fails. Which action resolves the issue?

A. Place the primary CMX IP address and the virtual IP address in the same subnet.
B. Place the secondary CMX IP address and the virtual IP address in different subnets.
C. Use a virtual IP address with CMX Layer 3 high availability.
D. Place the primary CMX IP address and the secondary CMX IP address in the same subnet.

Show Suggested Answer

Suggested Answer: D 🗳️

by hirendra at March 11, 2024, 10:51 a.m.

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rrahim

4 months, 1 week ago

Selected Answer: D

D. Place the primary CMX IP address and the secondary CMX IP address in the same subnet. For Layer 2 high availability (HA) to work correctly in Cisco CMX, the primary CMX IP address and the secondary CMX IP address must be in the same subnet. The virtual IP address (VIP) must also be in the same subnet as both the primary and secondary IP addresses. In the given scenario, the primary and secondary CMX IP addresses are in different subnets, which is causing the failover to fail.

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casterJR

8 months ago

Correct answer is D

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learn4team

9 months ago

Selected Answer: D

The primary and secondary must be reachable between each system. Both primary and secondary must be on the same subnet. This is required so the virtual IP address used can be switched to either system. https://www.cisco.com/c/en/us/support/docs/availability/high-availability/213664-configure-cmx-high-availability.html#anc5

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largestyle

9 months, 2 weeks ago

If the primary and secondary need to be in the same subnet the answer must be "Place the primary CMX IP address and the secondary CMX IP address in the same subnet." https://www.cisco.com/c/en/us/td/docs/wireless/mse/10-6/cmx_config/b_cg_cmx106/managin g_cisco_cmx_system_settings.html#concept_88FD92666F8140A980280E009C45152F

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hirendra

9 months, 3 weeks ago

answer should be A

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hirendra

9 months, 3 weeks ago

its Layer 2 HA, all devices should be in same subnet

upvoted 1 times

Soulmate

9 months, 1 week ago

I think the question is incorrect. There should be another option /choice - all nodes will be in same subnet - as it is layer 2.

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