R3303-HP HSR6800 Routers High Availability Configuration Guide

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• Monitor the master on a backup. If a fault occurs on the master, the backup working in switchover
mode will switch to the master immediately to maintain normal communication.
When VRRP is operating in load balancing mode, associate the Track module with the VRRP Virtual
Forwarder (VF) to implement the following functions:
• Change the priority of the active VF (AVF) according to its uplink state. When the uplink of the AVF
fails, the track entry changes to Negative state and the weight of the AVF decreases by a specific
value so that the VF with a higher priority becomes the new AVF to forward packets.
• Monitor the AVF status from the listening VF (LVF), which refers to the VF in listening state. When the
AVF fails, the LVF that is operating in switchover mode becomes the new AVF to ensure continuous
forwarding.
Follow these guidelines when you associate Track with VRRP group:
• VRRP tracking is not valid on an IP address owner. An IP address owner refers to a router when the
IP address of the virtual router is the IP address of an interface on the router in the VRRP group.
• When the status of the track entry changes from Negative to Positive or Invalid, the associated
router or VF restores its priority automatically.
• You can associate a nonexistent track entry with a VRRP group or VF. The association takes effect
only after you use the track command to create the track entry. For more information about VRRP,
see "Configuring VRRP."
To associate Track with VRRP group:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Create a VRRP group and
configure its virtual IP
address.
vrrp vrid virtual-router-id virtual-ip
virtual-address
No VRRP group is created by
default.
4. Associate a track entry with a
VRRP group.
vrrp [ ipv6 ] vrid virtual-router-id
track track-entry-number [ reduced
priority-reduced | switchover ]
No track entry is specified for a
VRRP group by default.
This command is supported when
VRRP is operating in both standard
protocol mode and load balancing
mode.
To associate Track with VRRP VF:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Create a VRRP group and
configure its virtual IP
address.
vrrp vrid virtual-router-id virtual-ip
virtual-address
No VRRP group is created by
default.