R3102-R3103-HP 6600/HSR6600 Routers High Availability Configuration Guide

157
Step
Command
Remarks
6. Configure VRRP to track a
specified track entry.
vrrp vrid virtual-router-id track
track-entry-number [ reduced
priority-reduced | switchover ]
Optional.
By default, VRRP is not configured
to track a specified track entry.
Configuring VF tracking
Configuration prerequisites
Before you configure the VF tracking function, create a VRRP group and configure a virtual IP address
for it.
Configuration procedure
VRRP operates in load balancing mode. Assume that you have configured the VF tracking function to
monitor the track entry and specified the value by which the weight decreases. When the status of the
track entry becomes negative, the weight values of all VFs on the router decrease by the specified
value. When the status of the track entry becomes positive or invalid, the weight values of all VFs on
the router restore their original values.
If you configure the VF tracking function on an LVF to monitor its corresponding AVF on a specified
router, the LVF can take over the AVF immediately when the status of the track entry becomes negative,
to ensure uninterrupted network communications.
You can configure the VF tracking function when VRRP operates in either standard mode or load
balancing mode. However, the VF tracking function is effective only when VRRP operates in load
balancing mode.
By default, the weight of a VF is 255, and its lower limit of failure is 10.
If the weight of a VF owner is higher than or equal to the lower limit of failure, the priority of the VF
owner is always 255 and does not change with the weight value. Therefore, in case of an uplink
failure, another VF takes over the VF owner's work and becomes the AVF only when the weight of the
VF owner decreases by a correctly specified value and becomes lower than the lower limit of failure.
In other words, the weight of the VF owner decreases by more than 245.
To configure VF tracking:
Step
Command
Remarks
1. Enter system view.
system-view
N/A
2. Enter the specified interface
view.
interface interface-type
interface-number
N/A