| Figure 1. Illustrates a typical setup
of a customer
connected to the
internet via a
router. If
the primary link
fails, the
customer is
down.
VRRP offers an
inexpensive DR
(disaster
recovery) option
to automatically
re-route traffic
via the 3G
network to the
Internet while
the primary link
is down.
Figure 2. Illustrates internet traffic
being routed via
the EasyRoute
because the
primary internet
link has failed.
Once the primary
link has been
restored,
internet traffic
will
automatically be
re-routed back
through the
primary link.
This feature can
be used in
conjunction with
the GSM gateway
doing it’s
normal voice
calling
functions as 2N
devices are
capable of
simultaneously
sending voice
and data at the
same time.
A technical
explanation of
this protocol
can be found at http://en.wikipedia.org/wiki/Virtual_Router_Redundancy_Protocol
Figure 2 |
