How to Use the standby preempt and standby track Commands - Cisco
cisco - hsrp on both side of router - Network Engineering Stack Exchange
HSRP – Hot Stand By Router Protocol – Das Blinken Lichten
Cisco Training Online - Basic Information of Configuring HSRP on a Cisco Router: Hot Standby Routing Protocol or HSRP, is a Cisco proprietary protocol that allows two or more routers to work