Users Manual

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In the diagram, the WAN ports of each Peplink Balance unit connect to the router and to the modem. Both
Peplink Balance units connect to the same LAN switch via a LAN port.
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