Routing
Virtual Router Redundancy Protocol (VRRP)
LR54 User Guide
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interface.
d. (Optional) Click
again to add additional interfaces.
8. (Optional) For backup devices, click to enable
Monitor VRRP+ master
.
This parameter allows a backup VRRP device to monitor the master device, and increase its
priority when the master device is failing SureLink tests. This can allow a device functioning as
a backup device to promote itself to master.
9. For
Priority modifier
, type or select the amount that the device's priority should be decreased
due to SureLink connectivity failure, and increased when SureLink succeeds again.
Along with the priority settings for devices in this VRRP pool, the amount entered here should
be large enough to automatically demote a master device when SureLink connectivity fails. For
example, if the VRRP master device has a priority of
100
and the backup device has a priority
of
80
, then the
Priority modifier
should be set to an amount greater than
20
so that if
SureLink fails on the master, it will lower its priority to below
80
, and the backup device will
assume the master role.
10. Configure the VRRP interface. The VRRP interface is defined in the
Interface
parameter of the
VRRP configuration, and generally should be a LAN interface:
To configure the VRRP interface:
a. Click to expand
Network
>
Interfaces
.
b. Click to expand the appropriate VRRP interface (for example,
LAN1
).
c. For backup devices, for
Default Gateway
, type the IP address of the VRRP interface on the
master device.
d. Configure the VRRP interface's DHCP server to use a custom gateway that corresponds to
one of the VRRP virtual IP addresses:
i. Click to expand
DHCP Server
>
Advanced settings
.
ii. For
Gateway
, select
Custom
.
