IP Manager
RLXIC-EH
♦
Intelligent Cellular
User Manual
RadioLinx Intelligent Cellular Ethernet Gateway for HSUPA (3G GSM) Networks
ProSoft Technology, Inc.
Page 63 of 111
May 29, 2009
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 www.prosoft-
technology.com. www.prosoft-technology.com is a fully qualified domain name, but the http://, the
protocol identifier, is what makes the whole thing a URL.
8.3 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 information to prevent other Internet sites or queries from using the old
information. Because 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 RLXIC-EH is configured for Dynamic IP, when it first connects to the
Internet, it sends a IP change notification to IP Manager. IP Manager 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.
After 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.
Note:
The fully qualified domain name of your RLXIC-EH will be a subdomain of the domain used
by the IP Manager server.
8.4
Using IP Manager with your RLXIC-EH
To allow your RadioLinx modem to be addressed by name, the modem needs to
have a minimum of three elements configured. You can also configure a second
dynamic server as a backup, secondary, or alternate server.
In AceManager, select
D
YNAMIC
IP
.
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