ed We can now create the simplest of HSRP configurations: Router A: interface fo/o ip address 192.168.100.2 255.255.255.0 standby ip 192.168.100.1 standby preempt Router B: interface fo/o ip address 192.168.100.3 255.255.255.0 standby ip 192.168.100.1 standby priority 95 standby preempt On each router, we assign the IP address to the interface as usual. We also assign the same standby IP address to both-this is the VIP. Notice that only Router B has a standby priority statement. Remember that the default priority is 100, SO by setting Router B to a priority of 95, we have made Router B the standby (since 95 is lower than 100). Lastly, both router configurations contain the command standby preempt. By default, HSRP does not reinstate the primary as the active router when it comes back online. To enable this behavior, you must configure the routers to preempt. This means that when a router with a higher priority than the active router comes online, the active router will allow the higher-priority router to become active. To view the status of HSRP on the routers, we can execute the show standby command: Router A: Router-A> sho standby FastEtherneto/o - Group o Local state is Active, priority 100, may preempt Hellotime 3 sec, holdtime 10 sec Next hello sent in 0.412 Virtual IP address is 192.168.100.1 configured Active router is local Standby router is 192.168.100.3 expires in 7.484 Virtual mac address is 0000.0c07.ac00 2 state changes, last state change 23w3d Router B: Router-B> sho standby FastEtherneto/o - Group 0 Local state is Standby, priority 95, may preempt Hellotime 3 sec, holdtime 10 sec Next hello sent in 1.398 Virtual IP address is 192.168.100.1 configured Active router is 192.168.100.2 priority 100 expires in 9.540 Standby router is local 2 state changes, last state change 23w3d Router A's output reflects that Router A is active with a priority of 100 and may pre- empt. We can also see that the VIP is 192.168.100.1, and that the standby router is 192.168.100.3. With more than two routers participating, 