You must use the authentication type configured within the standby command. Preemption should work on both devices and you must monitor the serial 1/0 link on the opposite router. R1 __ key chain HSRP key 1 key-string cisco accept-lifetime 00:00:00 Jan 1 1993 infinite send-lifetime 00:00:00 Jan 1 2010 infinite interface FastEthernet0/0 ip address 192.168.1.1 255.255.255.0 duplex auto speed auto no keepalive standby 1 ip 192.168.1.11 standby 1 priority 255 standby 1 preempt standby 1 authentication md5 key-string HSRP standby 1 name HSRP1 standby 2 ip 192.168.1.12 standby 2 priority 50 standby 2 authentication secur3 standby 2 name HSRP2 R2 __ key chain HSRP key 1 key-string cisco accept-lifetime 00:00:00 Jan 1 1993 infinite send-lifetime 00:00:00 Jan 1 1993 infinite interface FastEthernet0/0 ip address 192.168.1.2 255.255.255.0 duplex auto speed auto no keepalive standby 1 ip 192.168.1.111 standby 1 priority 50 standby 1 authentication md5 key-string HSRP standby 1 name HSRP1 standby 2 ip 192.168.1.12 standby 2 priority 255 standby 2 authentication s3cur3 standby 2 name HSPR2 standby 2 preempt https://blogger.googleusercontent.com/tracker/798422581969112174-66452885185 79354784?l=packetsanalyzed.blogspot.com <http://feedads.g.doubleclick.net/~a/iVk9ZawyROWQ_XP8jAekNTTJv78/0/da> http://feedads.g.doubleclick.net/~a/iVk9ZawyROWQ_XP8jAekNTTJv78/0/di <http://feedads.g.doubleclick.net/~a/iVk9ZawyROWQ_XP8jAekNTTJv78/1/da> http://feedads.g.doubleclick.net/~a/iVk9ZawyROWQ_XP8jAekNTTJv78/1/di http://feeds.feedburner.com/~r/PacketsAnalyzed/~4/xE5gywBVHJI
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