Designing Cisco Data Center Infrastructure (DCID) — Question 113

A network engineer must select a high availability feature for their data center. The solution must ensure network resilience, reduce network instability for Layer 3 routing protocols, and meet these requirements:

• The device must notify its neighbors when the control plane is undergoing a restart.
• The solution must suppress routing flaps in case of stateful switchovers.

Which solution must be implemented?

Answer options

Correct answer: C

Explanation

The correct answer is NSF (Non-Stop Forwarding) because it allows routers to continue forwarding packets during a control plane restart and suppresses routing flaps, which is essential for maintaining high availability. BFD (Bidirectional Forwarding Detection) is used for detecting faults in the path between two forwarding engines but does not address the specific requirements outlined. HSRP (Hot Standby Router Protocol) provides redundancy for IP traffic but does not provide control plane restart notifications. ISSU (In-Service Software Upgrade) is related to software upgrades without downtime but does not directly address the requirements for control plane notifications or routing flap suppression.