Rev 3.0B Feb.08
65
7
7: IP Manager
•
Understanding Domain
Names
•
Using IP Manager with
your Raven
•
Understanding DNS
If
you
have
a
fleet
of
Sierra
Wireless
AirLink
modems
or
even
if
you
only
have
one,
it
can
be
difficult
to
keep
track
of
the
current
IP
addresses,
especially
if
the
addresses
aren’t
static
but
change
every
time
the
modems
connect
to
Provider.
If
you
need
to
connect
to
a
modem,
or
the
device
behind
it,
it
is
so
much
easier
when
you
have
a
domain
name
(car54.mydomain.com,
where
are
you?).
Reasons to contact the modem and/or the connected
device:
•
Requesting
a
location
update
from
a
delivery
truck.
•
Contacting
a
surveillance
camera
to
download
logs
or
survey
a
specific
area.
•
An
oil
derek
that
needs
to
be
triggered
to
begin
pumping.
•
Sending
text
to
be
displayed
by
a
road
sign.
•
Updating
the
songs
to
be
played
on
a
juke
box.
•
Updating
advertisements
to
be
displayed
in
a
cab.
•
Remote
access
to
a
computer,
a
PLC,
an
RTU,
or
other
system.
•
Monitoring
and
troubleshooting
the
status
of
the
modem
itself
without
needing
to
bring
it
in
or
go
out
to
it.
A
dynamic
IP
address
is
suitable
for
many
Internet
activities
such
as
web
browsing,
looking
up
data
on
another
computer
system,
data
only
being
sent
out,
or
data
only
being
received
after
an
initial
request
(also
called
Mobile
Originated).
However,
if
you
need
to
contact
Raven
directly,
a
device
connected
to
the
modem,
or
a
host
system
using
your
Raven
(also
called
Mobile
Terminated),
a
dynamic
IP
won’t
give
you
a
reliable
address
to
contact
(since
it
may
have
changed
since
the
last
time
it
was
assigned).
Domain
names
are
often
only
connected
to
static
IP
addresses
because
of
the
way
most
domain
name
(DNS)
servers
are
set
‐
up.
Dynamic
DNS
servers
require
notification
of
IP
Address
changes
so
they
can
update
their
DNS
records
and
link
a
dynamic
IP
address
to
the
correct
name.
