300-320 Question #318: Real Exam Question with Answer & Explanation

The correct answer is B: 1. In Cisco ACI's spine-and-leaf fabric architecture, there is exactly ONE link between any given spine switch and any given leaf switch. The design rule is: every leaf connects to every spine via a single link, and every spine connects to every leaf via a single link - no parallel

Question

ACI: how many links expect between Spine and Leaf?

Options

Explanation

In Cisco ACI's spine-and-leaf fabric architecture, there is exactly ONE link between any given spine switch and any given leaf switch. The design rule is: every leaf connects to every spine via a single link, and every spine connects to every leaf via a single link - no parallel (redundant) links between the same spine-leaf pair. Redundancy is achieved by having multiple spines, so a leaf has multiple uplinks in total (one per spine), but only one uplink to each individual spine node. Allowing multiple parallel links between the same spine-leaf pair would create ECMP complexity that the ACI fabric handles differently, and Cisco's validated design calls for this 1:1 per-node link topology to keep the fabric non-blocking and predictable.

Community Discussion

No community discussion yet for this question.

Full 300-320 Practice