Exam 300-620 topic 1 question 35 discussion

Actual exam question from Cisco's 300-620

Question #: 35
Topic #: 1

[All 300-620 Questions]

When the subnet is configured on a bridge domain, on which physical devices is the gateway IP address configured?

A. all leaf switches and all spine nodes
B. only spine switches where the bridge domain of the tenant is present
C. only leaf switches where the bridge domain of the tenant is present
D. all border leaf nodes where the bridge domain of the tenant is present

Show Suggested Answer

Suggested Answer: C 🗳️
Reference:
http://www.netdesignarena.com/index.php/2016/06/16/aci-tenant-building-blocks-forwarding-logic/

by [deleted] at Jan. 13, 2021, 11:17 p.m.

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nikomski

Highly Voted 4 years, 4 months ago

C is correct

upvoted 12 times

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[Removed]

Highly Voted 4 years, 5 months ago

Correct Answer: Gateway will be available only the leaf switch where bridge domain is present in a specific tenant .

upvoted 10 times

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designated

Most Recent 7 months, 1 week ago

Selected Answer: C

Complete answer: Also, just like a VLAN and its SVI on a normal switch, the ACI bridge domain provides a default gateway and its subnet for endpoints. ACI bridge domain and the gateway will be pervasively deployed on any leaf switches with EPGs associated to the BD. Hence, a default gateway for all endpoints will be right in front of them on the first leaf they will see without having to forward a packet to another leaf that has the default gateway for the endpoint. This gateway is called a pervasive gateway, or anycast gateway. One bridge domain can have multiple pervasive gateways just like a VLAN SVI with a secondary IP on a normal switch.

upvoted 1 times

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designated

7 months, 1 week ago

Selected Answer: C

C is correct ACI bridge domain and the gateway will be pervasively deployed on any leaf switches with EPGs associated to the BD.

upvoted 1 times

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