A financial services company runs HSRP at the edge of its network to allow for redundancy for the default gateway for its servers. The CTO of the company is concerned that the failover time for HSRP i

Limiting the Layer 2 broadcast domain reduces unnecessary traffic but does not directly affect how quickly HSRP detects a gateway failure or initiates a failover.

Decreasing HSRP timers can reduce failover time but has a practical lower bound and places additional CPU load on the routers, whereas BFD offloads detection to a more efficient dedicated mechanism.

BFD is a dedicated, lightweight protocol designed specifically for fast failure detection, capable of detecting link failures in milliseconds at the hardware or software forwarding plane. When integrated with HSRP, BFD notifies HSRP immediately upon detecting a neighbor failure, triggering a failover far faster than any HSRP hello and hold timer adjustment alone can achieve.

Migrating from 802.1D STP to 802.1w RSTP improves spanning tree convergence time but does not accelerate HSRP's ability to detect a failed active router.

HSRP preemption enables a higher-priority router to reclaim the active role after it recovers but does not speed up the initial detection of a failed active gateway.