2012/3/15 Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>:
William Herrin wrote:
I know non-IP mobile environment is heavily encumbered. So, I can understand why you insist on using DNS for mobility only to make IP mobility as encumbered as non-IP ones.
I don't understand your statement. None of the technologies I work with use the word "encumbered" in a comparable context. Perhaps you could rephrase?
OK. You are bell headed.
If you want to be snippy in English, you should first gain a better command of the language. Neither of your previous statements has a meaning recognized beyond the confines of your own brain.
Your set and his set are both in motion so there _will_ be times when your address set changes before he can tell you the changes for his set. Hence #1 alone is an _incomplete_ solution.
A difficulty to understand the end to end principle is to properly recognize ends.
Here, you failed to recognize home agents as the essential ends to support reliable communication to mobile hosts.
A device which relays IP packets is not an endpoint, it's a router. It may or may not be a worthy part of a network architecture but it is unambiguously not an endpoint. If that isn't clear to you then don't presume to lecture me about the end to end principle. Regards, Bill Herrin -- William D. Herrin ................ herrin@dirtside.com bill@herrin.us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004