Configuring VRRP for IPv4 1083
■ The virtual IP address of the standby group cannot be 0.0.0.0,
255.255.255.255, loopback address, non A/B/C address and other illegal IP
addresses such as 0.0.0.1.
■ Only when the configured virtual IP address and the interface IP address belong
to the same segment and are legal host addresses can the standby group
operate normally. If the configured virtual IP address and the interface IP
address do not belong to the same network segment, or the configured IP
address is the network address or network broadcast address of the network
segment that the interface IP address belongs to, the state of the standby
group is always initialize though you can perform the configuration
successfully, that is, VRRP does not take effect in this case.
Configuring Standby
Group Priority,
Preemption Mode and
Interface Tracking
Configuration prerequisites
Before you configure these features, you should first create a standby group on
the interface and configure virtual IP address for it.
Configuration procedure
By configuring switch priority, preemption mode and interface tracking, you can
decide which switch in the standby group serves as the Master.
c
CAUTION:
■ The priority of an IP address owner is always 255 and not configurable.
■ Interface tracking is not configurable to an IP address owner.
■ The priority of a device is restored if the state of the interface under tracking
changes from down to up.
Configuring VRRP Packet
Attributes
Configuration prerequisites
Before configuring the relevant attributes of VRRP packets, you should first create
the standby group and configure the virtual IP address.
Configuration procedure
Follow these steps to configure VRRP packet attributes:
To do… Use the command… Remarks
Enter system view system-view -
Enter interface view interface interface-type
interface-number
-
Configure switch priority in
the standby group
vrrp vrid virtual-router-id
priority priority-value
Optional
100 by default.
Configure the switch in the
standby group to work in
preemption mode and
configure preemption delay
vrrp vrid virtual-router-id
preempt-mode [ timer
delay delay-value ]
Optional
The switch in the standby
group works in preemption
mode and the preemption
delay is 0 seconds by default.
Configure the interface to be
tracked
vrrp vrid virtual-router-id
track interface interface-type
interface-number [ reduced
priority-reduced ]
Optional
No interface is being tracked
by default.
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