H3C Technologies H3C S6800 Series Switches - Manual (Page 39)

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Step Command Remarks
3. Create a VRRP group and
assign a virtual IPv6 address,
which is a link-local address.
vrrp ipv6 vrid virtual-router-id
virtual-ip virtual-address link-local
By default, no VRRP group exists.
The first virtual IPv6 address that
you assign to an IPv6 VRRP group
must be a link-local address, and it
must be the last address you
remove. Only one link local
address is allowed in a VRRP
group.
4. (Optional.) Assign a virtual
IPv6 address, which is a
global unicast address.
vrrp ipv6 vrid virtual-router-id
virtual-ip virtual-address
By default, no global unicast
address is assigned for an IPv6
VRRP group.
Configuring the router priority and preemptive mode
Configuration guidelines
The running priority of an IP address owner is always 255, and you do not need to configure it. An IP
address owner always operates in preemptive mode.
Configuration procedure
To configure the router priority and preemptive mode:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Configure the priority of the
router in the VRRP group. vrrp ipv6 vrid virtual-router-id
priority priority-value
The default setting is 100.
4. Enable the preemptive mode
for the router in a VRRP group
and configure the preemption
delay time.
vrrp ipv6 vrid virtual-router-id
preempt-mode [ delay
delay-value ]
By default, the router in a VRRP
group operates in preemptive
mode and the preemption delay
time is 0 seconds, which means an
immediate preemption.
Configuring IPv6 VRRP packet attributes
This section describes how to configure IPv6 VRRP packet attributes.
Configuration guidelines
• The routers in an IPv6 VRRP group can have different intervals for sending VRRP advertisements. The
master in the VRRP group sends VRRP advertisements at the specified interval and carries the
interval attribute in the advertisements. After a backup receives the advertisement, it records the
interval in the advertisement. If the backup does not receive a new VRRP advertisement from the
master when the timer (3 x recorded interval + Skew_Time) expires, it regards the master as failed
and takes over as the new master.