CCDE: Cisco Certified Design Expert (Practical) — Question 163

Company XYZ has a hub-and-spoke topology over an SP-managed infrastructure. To measure traffic performance metrics, they implemented IP SLA senders on all spoke CE routers and an IP SLA responder on the hub CE router. What must they monitor to have visibility on the potential performance impact due to the constantly increasing number of spoke sites?

Answer options

• A. CPU and memory usage on the spoke routers
• B. memory usage on the hub router
• C. CPU usage on the hub router
• D. interface buffers on the hub and spoke routers

Correct answer: C

Explanation

Monitoring the CPU usage on the hub router is crucial because as the number of spoke sites increases, the hub's processing demands will rise, potentially leading to performance degradation. The CPU and memory usage on spoke routers (Option A), memory usage on the hub (Option B), and interface buffers (Option D) are important, but they do not directly reflect the central processing capacity which is vital for handling more traffic from additional spokes.