Voice-on-the-net (VON), VoIP, Internet (IP) Telephony Message Board

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Technology Stocks : Voice-on-the-net (VON), VoIP, Internet (IP) Telephony

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To: Crash who wrote (2778)	6/22/1999 10:05:00 AM
From: Scott C. Lemon	Read Replies (2) of 3178

Hello Crash, I'll see if I can answer some of these ... > Wouldn't IP addressing imply a fixed location? Not "fixed" as in a physical location ... an IP address must end up being associated with an IP "subnet" (or group of IP addresses), but through the new advances with "Virtual Local Area Networks" and a standard called Mobile IP a user can "roam" with their IP address. The new IP v6 address space is even being broken up into "standard" addressing, and "geographical" addressing. Also, the device can always be told to "release and renew" it's IP address on the fly, which would tell it to make a request to a server for a new address. > Or is there some standard for mobility that I am not aware of > today? If we are not talking about the "release and renew" of an IP address, then the only other way I can think of is the "Vitual LAN" concept, or Mobile IP concept. With Virtual LAN, the physical devices that make up the network actually put a "wrapper" on the packet of data and send it on across the network ... tagging the packet to indicate that it is part of a IP subnet that exists spread across a wide physical area. With Mobile IP, your device might change addresses, but always reports back to a "server" ... the server has a fixed address that "appears" to be your IP address ... but it really relays the packets to you where ever you are ... > If a capability exists, why would I need an IP address? Is there > some need for backward compatibility with fixed location > applications? The IP address is still the foundation for routing information through the network ... and all of the solutions have not yet been developed. For example, Mobile IP is a great idea, but could be very inefficient ... in the worst case I might have my "server" across the country from you ... but be sitting next to you on your same sub-net. But because I'm using the Mobile IP capabilities, you would always communicate with my server which would relay the traffic to me ... two trips across country when the communications could be done locally ... > Just Curious. These are good questions and good areas to explore ... Scott C. Lemon

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