VRRP is an open standard meant to allow different vendors to be involved. RFC3768 & 2338 cover the specifics.
To enable VRRP, use the vrrp command in configuration mode. Use the no form of the command to revert to the factory defaults or to negate a command.
vrrp ipv4-vr-group-number
{address ip-address [secondary] |
advertisement-interval seconds |
authentication {md5 keyname spi index | text password} |
preempt |
priority value |
shutdown |
track interface {mgmt 0 | vsan vsan-id}
http://www.cisco.com/en/US/products/hw/vpndevc/ps2284/products_tech_note09186a0080094490.shtml covers some more info
hth