Data Communication and Host Modes
Rev 3.0B Feb.08
57
Data Communication
Note: The Raven forwards
messages to and from the
cellular network for only ONE
device per port. The Raven is a
one-to-one gateway and does
not have advanced routing
features required to do one-to-
many routing.
The
primary
purpose
of
the
Raven
is
to
forward
data
from
a
single
device
connected
to
one
of
the
ports
to
the
cellular
network
and,
ultimately,
under
most
circumstances,
to
the
Internet
in
a
one
‐
to
‐
one
gateway
configuration.
When
the
Raven
obtains
its
IP
address
from
TELUS,
it
also
obtains
the
network
routing
information
necessary
to
forward
messages
to
their
routers
which
can
then
forward
on
from
there.
The
Raven
then
acts
as
a
router
for
the
device
connected
to
it,
forwarding
to
or
from
the
cellular
network.
Public and Private Mode
In
Public
Mode,
the
Raven
will
pass
the
IP
address
assigned
by
the
cellular
network
to
the
device
connected
to
its
port.
Public
Mode
is
the
default
mode
for
the
Raven.
If
you
need
more
control
over
which
gateway
address,
device
address,
and
netmask
that
is
given
out
by
the
internal
DHCP
server,
you
can
use
the
private
host
mode,
*HOSTPRIVMODE,
and
set
the
internal
network
IP
addresses.
The
Raven
will
use
NAT
to
forward
packets
to
the
end
device.
Tip: When using Public mode, Sierra Wireless recommends
connecting the modem directly to the computer or other end device.
Using a hub or switch may prevent the Raven from updating the IP
address of the end device when an IP address is received from the
cellular network.
In
AceManager,
the
Private
mode
settings
are
part
of
the
PPP/
Ethernet
group.
