IP Manager
Rev 3.0B Feb.08
53
need
to
be
registered
with
ICANN
or
any
other
registry.
It
is
the
responsibility
of
a
domain
to
keep
track
of
its
own
subs.
car54.mydomain.com
•
.com
is
the
TLD
•
mydomain
is
the
domain
(usually
noted
as
mydomain.com
since
the
domain
is
specific
to
the
TLD)
•
car54
is
the
subdomain
or
server
name
associated
with
the
device,
computer,
or
modem
registered
with
mydomain.com
car54.mydomain.com.ca
This
would
be
the
same
as
above,
but
with
the
addition
of
the
country
code.
In
this
example,
the
country
code
(.ca)
is
for
Canada.
Tip: A URL (Universal Resource Locator) is different from a domain
name in that it also indicates information on the protocol used by a
web browser to contact that address, such as
http://
www.sierrawireless.com
.
www.sierrawireless.com
is a fully qualified
domain name, but the http://, the protocol identifier, is what makes the
whole thing a URL.
Dynamic Names
When
an
IP
address
is
not
expected
to
change,
the
DNS
server
can
indicate
to
all
queries
that
the
address
can
be
cached
and
not
looked
up
for
a
long
period
of
time.
Dynamic
DNS
servers,
conversely,
have
a
short
caching
period
for
the
domain
infor
‐
mation
to
prevent
other
Internet
sites
or
queries
from
using
the
old
information.
Since
the
IP
address
of
a
modem
with
a
dynamic
account
can
change
frequently,
if
the
old
information
was
used
(such
as
with
a
DNS
server
which
indicates
the
address
can
be
cached
for
a
long
period
of
time)
when
the
IP
address
changed,
the
domain
would
no
longer
point
to
the
new
and
correct
IP
address
of
the
modem.
If
your
Raven
‐
E
is
configured
for
Dynamic
IP,
when
it
first
connects
to
the
Internet,
it
sends
a
IP
change
notification
to
IP
Manager.
IP
Manger
will
acknowledge
the
change
and
update
the
Dynamic
DNS
server.
The
new
IP
address
will
then
be
the
address
for
your
modem’s
configured
name.
Once
your
modem’s
IP
address
has
been
updated
in
IP
Manager,
it
can
be
contacted
via
name.
If
the
IP
address
is
needed,
you
can
use
the
domain
name
to
determine
the
IP
address.
