H3C Technologies H3C S12500 Series Switches - Manual (Page 215)

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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 operates 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 specified
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 operates in the switchover mode becomes the new AVF to ensure continuous
forwarding.
To associate Track with VRRP group:
Step 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 operates in both standard
protocol mode and load balancing
mode.
To associate Track with VRRP VF:
Step 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 Track with VRRP VF.
• Associate a track entry with the
VRRP VF:
vrrp [ ipv6 ] vrid virtual-router-id
weight track track-entry-number
[ reduced weight-reduced ]
• Configure the LVF to monitor the
AVF status through the track
entry:
vrrp [ ipv6 ] vrid virtual-router-id
track track-entry-number
forwarder-switchover
member-ip ip-address
Use at least one method.
By default, no track entry is
specified for a VF.
This command is supported when
VRRP operates in standard mode
or load balancing mode.
However, this function takes effect
only when VRRP operates in load
balancing mode.
For more information about VRRP,
see "Configuring VRRP."