What is the difference between HSRP & VRRP?

HSRP

* Cisco proprietary

* 1 Active & 1 standby router & 1 or more listening routers

* use virtual ip address as gateway

* hello 3 sec & holddown timer 10 sec

* we can enable preempt manually (standby 1 preempt)

6) multicast at:224.0.0.2 (ver1), multicast at:224.0.0.102 (ver2). Both versions use udp port 1985

VRRP

* open standard (ietf)

* 1 master & 1 or more backup routers

* real ip address can be used (highest ip address of interface)

* 1 sec & hold-down timer 3 sec

* By default preempt is enabled

* multicast at:224.0.0.18 – IP 112