A smart-city edge DC proposes running the Clos with only a single spine to save cost. What is the main architectural risk?
Select an answer to reveal the explanation.
Short Explanation
One spine is one light bulb for the whole closet—when it pops, the edge DC goes dark. Clos expects at least a pair so a failure still leaves a path. Saving the second spine is how you buy an outage.
Full Explanation
Redundant spines provide alternate underlay paths so a spine failure does not partition the fabric. A single spine is a single point of failure for leaf-to-leaf transit. ECMP and loopback advertisement work with multiple spines; they are not reasons to run only one. Adding spines does not require abandoning IP routing for STP.