Virtual Router Redundancy Protocol (Vrrp) - Digi IX10 User Manual

Routing
(config network ddns new_ddns_instance)> force_interval value
(config network ddns new_ddns_instance)>
where value is any number of weeks, days, hours, minutes, or seconds, and takes the format
number{w|d|h|m|s}.
For example, to set force_interval to ten minutes, enter either 10m or 600s:
(config network ddns new_ddns_instance)> force_interval 600s
(config network ddns new_ddns_instance)>
The default is 3d.
12. (Optional) Set the amount of time to wait for an IP address update to succeed before retrying
the update:
(config network ddns new_ddns_instance)> retry_interval value
(config network ddns new_ddns_instance)>
where value is any number of weeks, days, hours, minutes, or seconds, and takes the format
number{w|d|h|m|s}.
For example, to set retry_interval to ten minutes, enter either 10m or 600s:
(config network ddns new_ddns_instance)> retry_interval 600s
(config network ddns new_ddns_instance)>
The default is 60s.
13. (Optional) Set the number of times to retry a failed IP address update:
(config network ddns new_ddns_instance)> retry_count value
(config network ddns new_ddns_instance)>
where value is any interger. The default is 5.
14. Save the configuration and apply the change:
(config)> save
Configuration saved.
>
15. Type exit to exit the Admin CLI.
Depending on your device configuration, you may be presented with an Access selection
menu. Type quit to disconnect from the device.

Virtual Router Redundancy Protocol (VRRP)

Virtual Router Redundancy Protocol (VRRP) is a standard for gateway device redundancy and failover
that creates a "virtual router" with a floating IP address. Devices connected to the LAN then use this
virtual router as their default gateway. Responsibility for the virtual router is assigned to one of the
VRRP-enabled devices on a LAN (the "master router"), and this responsibility transparently fails over
to backup VRRP devices if the master router fails. This prevents the default gateway from being a
single point of failure, without requiring configuration of dynamic routing or router discovery protocols
on every host.
Multiple IX10 devices can be configured as VRRP devices and assigned a priority. The router with the
highest priority will be used as the master router. If the master router fails, then the IP address of the
IX10 User Guide
Virtual Router Redundancy Protocol (VRRP)
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