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HSRP for First-Hop Routing (HSRP Misconfiguration (HSRP version mismatch,…
HSRP for First-Hop Routing
Router Redundancy Protocol
FHRP (First Hop Redundancy Protocol)
HSRP
Hot Standby Routing Protocol
Cisco - [Active/Standby] - Per subnet
VRRP
Virtual Router Redundancy Protocol
RFC 5798 - [Active/Standby] - Per subnet
GLBP
Gateway Load Balancing Protocol
Cisco - [Active/Active] - Per host
HSRP Load Balancing
R1 - Active Subnet 1
R2 - Standby Subnet 1
R2 - Active Subnet 2
R1 - Standby Subnet 2
HSRP Commands
show standby
show standby brief
int g0/0
shutdown
standby 1 preempt
no shutdown
HSRP Versions
v1
v2
HSRP Misconfiguration
HSRP version mismatch
HSRP group number mismatch
ACL blocks HSRP packets
Routers configure different VIPs