Users Manual

https://www.peplink.com
118
Copyright @ 2019 Pepwave
23 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).
23.1 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
configured LAN IP address.
● At a subsequent point when the master Pepwave router recovers, it will once again