Routing Virtual Router Redundancy Protocol (VRRP)
IX20 User Guide
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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 IPaddressupdate 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 timesto retry a failed IPaddress update:
(config network ddns new_ddns_instance)> retry_count value
(config network ddns new_ddns_instance)>
where value is any interger. The default is5.
14. Save the configuration and apply the change
(config)> save
Configuration saved.
>
15. Typeexit 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) isa standard for gateway device redundancy and failover
that createsa "virtual router" with a floating IPaddress. 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 deviceson a LAN (the "master router"), and this responsibility transparently fails over
to backup VRRPdevicesif the master router fails. Thispreventsthe default gateway from being a
single point of failure, without requiring configuration of dynamic routing or router discovery
protocols on every host.
Multiple IX20 devicescan be configured as VRRPdevicesand assigned a priority. Therouter with the
highest priority will be used as the master router. If the master router fails, then the IPaddressof the
virtual router is mapped to the backup device with the next highest priority. Each VRRProuter is
configured with a unique LAN IPaddress, and the same shared VRRPaddress.
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