User Guide

http://www.peplink.com
133
Copyright @ 2017 Peplink
An elaboration on the technical details of the implementation of virtual router redundancy
protocol (VRRP, RFC 3768) by the Balance follows:
● In an HA configuration, the two Peplink Balance units communicate with each other
using VRRP over the LAN.
● The two Peplink Balance units broadcast heartbeat signals to the LAN at a frequency of
one heartbeat signal per second.
● In the event that no heartbeat signal from the master Peplink Balance unit is received in
3 seconds (or longer) since the last heartbeat signal, the slave Peplink Balance unit
becomes active.
● The slave Peplink Balance unit initiates the WAN connections and binds to a previously
configured LAN IP address.
● At a subsequent point when the master Peplink Balance unit recovers, it will once again
become active.
You can configure high availability at Network>Misc. Settings>High Availability.
Interface for Master Router
Interface for Slave Router
High Availability
Enable
Checking this box specifies that the Peplink Balance unit is part of a high availability
configuration.
Group Number
This number identifies a pair of Peplink Balance units operating in a high availability
configuration. The two Peplink Balance units in the pair must have the same Group Number
value.
Preferred Role
This setting specifies whether the Peplink Balance unit operates in master or slave mode.
Click the corresponding radio button to set the role of the unit. One of the units in the pair
must be configured as the master, and the other unit must be configured as the slave.
Resume
Master Role
Upon
Recovery
This option is displayed when Master mode is selected in Preferred Role. If this option is
enabled, once the device has recovered from an outage, it will take over and resume its
Master role from the slave unit.
Configuration
Sync.
This option is displayed when Slave mode is selected in Preferred Role. If this option is
enabled and the Master Serial Number entered matches with the actual master unit's, the
master unit will automatically transfer the configuration to this unit. Please make sure