Exam 300-620 topic 1 question 49 discussion

Actual exam question from Cisco's 300-620

Question #: 49
Topic #: 1

Refer to the exhibit. An engineer must configure an L3Out peering with the backbone network. The L3Out must forward unicast and multicast traffic over the link.
Which two methods should be used to configure L3Out to meet these requirements? (Choose two.)

A. Layer 3 routed port
B. VPC with SVI
C. port channel with SVI
D. Layer 3 routed subinterface
E. Layer 3 floating SVI

Show Suggested Answer

Suggested Answer: AD 🗳️

by nikomski at Jan. 25, 2021, 5:17 p.m.

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Orlando1

Highly Voted 4 years, 3 months ago

Should be A and D. "PIM is supported on Layer 3 Out routed interfaces and routed subinterfaces including Layer 3 port-channel interfaces. PIM is not supported on Layer 3 Out SVI interfaces." https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/2-x/L3_config/b_Cisco_APIC_Layer_3_Configuration_Guide/b_Cisco_APIC_Layer_3_Configuration_Guide_chapter_01111.html#id_21570

upvoted 12 times

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2 years, 9 months ago

A, D Layer 3 Out ports and sub-interfaces are supported while external SVIs are not supported. Since external SVIs are not supported, PIM cannot be enabled in L3-VPC. https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/4-x/L3-configuration/Cisco-APIC-Layer-3-Networking-Configuration-Guide-401/Cisco-APIC-Layer-3-Networking-Configuration-Guide-401_chapter_010010.html

upvoted 1 times

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danhvu

4 years, 4 months ago

I think A is used Routed port instead of the Routed interface

upvoted 1 times

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nikomski

4 years, 4 months ago

Why A is not correct?

upvoted 1 times

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