ACI Multi-Site Architecture Descriptions
What are two descriptions of ACI Multi-Site? (Choose two.)
Community Votes
80% of anonymous learners picked answer DE. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
The exam tests the ability to differentiate between centralized management (Multi-Pod) and distributed site management (Multi-Site), with the common trap being confusion over which design uses a single vs. multiple APIC clusters.
This question examines the core architectural components of Cisco ACI Multi-Site, specifically distinguishing between Multi-Site and Multi-Pod designs. It establishes that Multi-Site utilizes dedicated APIC clusters per site managed by MSO.
Candidates often select Option B because they confuse Multi-Site with Multi-Pod; Multi-Pod is the solution where one APIC cluster manages multiple sites, whereas Multi-Site requires a dedicated APIC cluster per site.
Community Discussion (5 comments)
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Expert Analysis
Why the Answer Is Correct
Option D is correct because a defining characteristic of ACI Multi-Site is that each site maintains its own dedicated APIC cluster for local policy enforcement and management. Option E is correct because the Inter-Site network connects these separate sites, and while modern versions support MP-BGP, OSPF is the traditional and primary underlay protocol used to establish peering between the spines of different sites.Why the Other Options Are Wrong
Option A is incorrect because it mandates DHCP relay as a requirement for routers, which is not a standard specification for the inter-site control plane. Option B describes ACI Multi-Pod, not Multi-Site; in Multi-Pod, a single APIC cluster spans multiple pods/sites, whereas Multi-Site implies distinct clusters. Option C is incorrect because the orchestrator (MSO) is a logical entity that does not need physical attachment to a leaf switch.Community Comment Notes
Community consensus strongly supports DE, noting that Multi-Site involves 'a apic cluster per site'. Users also clarify that this architecture is distinct from Multi-Pod, reinforcing why Option B is a distractor. One comment highlights that while BGP is now supported, OSPF remains a valid description of the peering mechanism.Official Reference
Exam Strategy
When asked about ACI Multi-Site, look for keywords like 'dedicated APIC per site' or 'MSO managing multiple clusters'. If the option mentions 'one APIC cluster', it is describing Multi-Pod, which is a different technology.
Frequently Asked Questions
Why is Option B incorrect for ACI Multi-Site?
Option B describes ACI Multi-Pod, where one APIC cluster manages multiple sites. Multi-Site requires a separate APIC cluster for each site.
Does ACI Multi-Site require OSPF on routers?
OSPF is commonly used for inter-site spine peering. While newer releases may support MP-BGP, OSPF is a valid and standard description for the underlay connection.