R0106-HP MSR Router Series High Availability Configuration Guide(V7)
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Configuration procedure
To configure the router priority, preemptive mode, and tracking function:
Ste
p
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.
5. Associate a VRRP group with a
track entry.
vrrp ipv6 vrid virtual-router-id track
track-entry-number [ reduced
priority-reduced | switchover ]
By default, a VRRP group is not
associated with any track entry.
Configuring VF tracking
You can configure VF tracking in both standard mode and load balancing mode, but the function takes
effect only in load balancing mode.
In load balancing mode, you can configure the VFs in a VRRP group to monitor a track entry. When the
state of the track entry transits to Negative, the weights of all VFs in the VRRP group on the router
decrease by a specific value. When the state of the track entry transits to Positive or Notready, the
original weights of the VFs restore.
Configuration guidelines
• By default, the weight of a VF is 255, and its lower limit of failure is 10.
• When the weight of a VF owner is higher than or equal to the lower limit of failure, its priority is
always 255 and does not change with the weight. To guarantee that an LVF can take over the VF
owner as the AVF when the upstream link of the VF owner fails, the reduced weight for the VF owner
must be higher than 245 so the weight of the VF owner can drop below the lower limit of failure.
Configuration procedure
To configure VF tracking:
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Configure the VFs in a VRRP
group to monitor a track entry
and configure the reduced
weight.
vrrp ipv6 vrid virtual-router-id
weight track track-entry-number
[ reduced weight-reduced ]
By default, no track entry is
specified.