R3166-R3206-HP High-End Firewalls High Availability Configuration Guide-6PW101

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NOTE:
• The maximum number of VRRP groups on an interface is 255, and the maximum number of virtual IP
addresses in a VRRP group is 16.
• When VRRP works in standard protocol mode, the virtual IP address of a VRRP group can be either an
unused IP address on the segment where the VRRP group resides or the IP address of an interface on a
router in the VRRP group. In the latter case, the router is called the IP address owner.
• When a router is the IP address owner in a VRRP group, HP recommends you not to use the IP address
of the interface (virtual IP address of the VRRP group) to establish a neighbor relationship with the
adjacent router, that is, not to use the network command to enable OSPF on the interface. For more
information about network command, see
Network Management Command Reference.
• When VRRP works in load balancing mode, the virtual IP address of a VRRP group cannot be the same
as the IP address of any interface in the VRRP
g
roup. In other words, in load balancin
g
mode, the VRRP
group does not have an IP address owner.
• A VRRP group is removed after you remove all the virtual IP addresses configured for it. In addition,
configurations on that VRRP group do not take effect any longer.
• Removal of the VRRP group on the IP address owner causes IP address collision. To solve the collision,
modify the IP address of the interface on the IP address owner first and then remove the VRRP group
from the interface.
• The virtual IP address of a VRRP group cannot be 0.0.0.0, 255.255.255.255, loopback addresses, non
class A/B/C addresses or other illegal IP addresses such as 0.0.0.1.
• A VRRP group operates normally only when the configured virtual IP address and the interface IP
address belon
g
to the same se
g
ment and are le
g
al host addresses. If the confi
g
ured virtual IP address
and the interface IP address do not belon
g
to the same network se
g
ment, or the confi
g
ured IP address
is the network address or network broadcast address of the network segment to which the interface IP
address belongs, the state of the VRRP group is always initialize though you can perform the
configuration successfully. In this case, VRRP does not take effect.
Configuring router priority, preemptive mode and tracking
function
Configuration prerequisites
Before you configure router priority, preemptive mode and tracking function, create a VRRP group on an
interface and configure a virtual IP address for it.
Configuration procedure
By configuring router priority, preemptive mode, interface tracking, or a track entry, you can determine
which router in the VRRP group serves as the master.
Follow these steps to configure router priority, preemptive mode and the tracking function:
To do… Use the command…
Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
—
Configure router priority in the
VRRP group
vrrp vrid virtual-router-id priority
priority-value
Optional
100 by default.