H3C Technologies H3C SR8800 - Manual (Page 73)

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Step Command Remarks
3. Configure the priority of the
router in the VRRP group. vrrp ipv6 vrid virtual-router-id
priority priority-value Optional.
100 by default.
4. Configure the router in the
VRRP group to work in
preemptive mode and
configure preemption delay of
the VRRP group.
vrrp ipv6 vrid virtual-router-id
preempt-mode [ timer delay
delay-value ]
Optional.
The router in the VRRP group works
in preemptive mode and the
preemption delay is zero seconds
by default.
5. Configure the interface to be
tracked.
vrrp ipv6 vrid virtual-router-id track
interface interface-type
interface-number [ reduced
priority-reduced ]
Optional.
No interface is being tracked by
default.
6. Configure VRRP to track a
specified track entry.
vrrp ipv6 vrid virtual-router-id track
track-entry-number [ reduced
priority-reduced | switchover ]
Optional.
Not configured by default.
NOTE:
•
The running priority of an IP address owner is always 255 and you do not need to configure it. An IP
address owner always works in preemptive mode.
• Interface tracking is not configurable on an IP address owner.
• If you configure an interface to be tracked or a track entry to be monitored on a router that is the IP
address owner in a VRRP group, the configuration does not take effect. If the router is not the IP address
owner in the VRRP group later, the configuration takes effect.
• The tracked interface can be a Layer 3 Ethernet interface, a VLAN interfaces, a Layer 3 aggregate
interface, a POS interface, an MP-group interface, an HDLC link bundle interface, or an RPR logical
interfaces.
• If the state of a tracked interface changes from down or removed to up, the priority of the router that
owns the interface is automatically restored.
• If the state of a track entry changes from negative or invalid to positive, the priority of the router where
the track entry is configured is automatically restored.
Configuring VF tracking
Configuration prerequisites
Before you configure the VF tracking function, create a VRRP group and configure a virtual IPv6 address
for it.
Configuration procedure
VRRP works in load balancing mode. Suppose that the VF is configured to monitor a track entry. When
the state of the track entry becomes negative or invalid, the weight values of all VFs on the routers
decrease by a specified value; when the state of the track entry becomes positive, the weight values of
all VFs on the routers restore their original values.
To configure VF tracking: