Optimizing HSRP презентация

Implementing High Availability in a Campus Environment Optimizing HSRP

HSRP Optimization Options These options can be configured to optimize HSRP: HSRP standby priority HSRP standby preempt Hello message timers HSRP interface tracking

Configuring HSRP Standby Priority

Configuring HSRP Standby Preempt

Configuring the Hello Message Timers

HSRP Interface Tracking

HSRP Interface Tracking (Cont.)

Configuring HSRP Tracking

Tuning HSRP Configure hellotime and holdtime to millisecond values. Configure preempt delay timer so that preempt occurs only after the distribution switch has fully rebooted and established full connectivity to the rest of the network.

Multiple HSRP Groups

Addressing HSRP Groups Across Trunk Links To load balance routers and links: Per VLAN, configure the HSRP active router and the spanning tree root to be the same multilayer switch.

About the HSRP Debug Command debug standby events debug standby terse

Debugging HSRP

Summary Preempt, timers, and interface tracking are options that can be configured to optimize HSRP. HSRP preempt can be tuned by adjusting timers that can thereby reduce failover time. To facilitate load sharing, a single interface on a router can be a member of multiple HSRP groups. Specific debug commands are used to view HSRP state changes. Debug can be used to discover the virtual IP address and the priority of the active and standby routers.