Sierra Raven EDGE - Manual (Page 18)

Introduction to the Raven
Rev 3.0B Feb.08 14
Figure 1-8: Connecting to the Internet
The Raven will perform a one‐to‐one routing for all internet
traffic to and from the computer or other end device. One‐to‐
one means that your Raven will provide a connection for one
device to the Internet at a time. In Private Mode, the Raven will
provide NAT (Network Address Translation) for the computer
or other end device.
Note: The Raven does not provide advanced routing required by one-
to-many (several devices connected to one port). If you need to have
more than one device connected to the Internet through your Raven,
you will need to have a router connected to the modem. The modem
would provide the one-to-one connection to the router with the router
configured to provide a broader NAT service to the other devices
connected to it.
Dynamic vs. Static IP Addresses
There are two types of addresses on networks: dynamic and
static.
• Dynamic addresses are assigned on a “need to have” basis.
Your Raven might not always receive the same address
each time it connects with your cellular provider.
• Static addresses are permanently assigned to a particular
account and will always be used whenever your Raven
connects to the Internet. The IP address will not be given
to anyone else.
Most ISPs (cellular included) use dynamic IP addresses rather
than static IP addresses since it allows them to reuse a smaller
number of IP addresses for a large number of customers. A
dynamic IP address is suitable for many common Internet
uses, such as web browsing, looking up data on another
computer system, or other client functions (such as data only
being sent out or only being received after an initial request).
Tip: If your account with your cellular provider includes a dynamic IP
address and you need a static IP, please consult your your cellular
provider Representative for more information about changing your
account for static IP support.
If you need to contact your Raven, a device connected to the
Raven, or a host system using the Raven from the Internet, you
need to have a known IP (such as one which is static) or
domain name (an IP address which is converted by a DNS
server into a word based name). If you have a dynamic IP