Users Manual

24 Miscellaneous Settings

The miscellaneous settings include configuration for High Availability, Certificate Manager,

service forwarding, service passthrough, GPS forwarding, GPIO, Groupe Networks and SIM

Toolkit (depending the feature is supported on the model of Peplin router that is being used).

24.1 High Availability

Many Pepwave routers support high availability (HA) configurations via an open standard virtual

router redundancy protocol (VRRP, RFC 3768). In an HA configuration, two Pepwave routers

provide redundancy and failover in a master-slave arrangement. In the event that the master

unit is down, the slave unit becomes active. High availability will be disabled automatically

where there is a drop-in connection configured on a LAN bypass port.

In the diagram, the WAN ports of each Pepwave router connect to the router and to the modem.

Both Pepwave routers connect to the same LAN switch via a LAN port.

An elaboration on the technical details of the implementation of the virtual router redundancy

protocol (VRRP, RFC 3768) by Pepwave routers follows:

● In an HA configuration, the two Pepwave routers communicate with each other using

VRRP over the LAN.

● The two Pepwave routers 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 Pepwave router is received in 3

seconds (or longer) since the last heartbeat signal, the slave Pepwave router becomes

active.

● The slave Pepwave router initiates the WAN connections and binds to a previously

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