You are deploying an IP fabric with an oversubscription ratio of 3:1. In this scenario, which two statements are correct? (Choose two.)

Question

Options

• AThe oversubscription ratio decreases when you add leaf devices.
• BThe oversubscription ratio remains the same when you remove leaf devices.
• CThe oversubscription ratio increases when you remove leaf devices.
• DThe oversubscription ratio remains the same when you add leaf devices.

• A
  16% (6)
• B
  5% (2)
• C
  78% (29)

Explanation

Adding leaf devices increases the edge bandwidth (workload-facing ports), which lowers the oversubscription ratio because the amount of bandwidth facing the workloads increases relative to the fabric bandwidth. However, the oversubscription ratio itself remains the same when you add leaf devices if the fabric design and spine capacity remain unchanged because the ratio is a function of edge bandwidth to spine bandwidth. Adding leaf devices without changing spine devices keeps the ratio at the same level. Removing leaf devices would increase the oversubscription ratio because the amount of edge bandwidth decreases while spine bandwidth remains the same.

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