A customer has a 3-stage Clos architecture with three spine devices as shown in the exhibit. If a single spine device fails, what percentage of the remaining bandwidth will be available from leaf…

The correct answer is D. approximately 66%. Leaf-to-leaf communication has 3 paths via each Spine node; lose 1 Spine, lose 1 path, i.e. 33%

Data center routing and switching technologies

Question

A customer has a 3-stage Clos architecture with three spine devices as shown in the exhibit. If a single spine device fails, what percentage of the remaining bandwidth will be available from leaf node to leaf node?

Exhibit

Options

Aapproximately 25%
Bapproximately 75%
Capproximately 33%
Dapproximately 66%

How the community answered

(38 responses)

A
13% (5)
B
11% (4)
C
5% (2)
D
71% (27)

Explanation

Leaf-to-leaf communication has 3 paths via each Spine node; lose 1 Spine, lose 1 path, i.e. 33%

Topics

#Clos architecture#spine-leaf#bandwidth#fault tolerance

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