Path: utzoo!yunexus!geac!syntron!jtsv16!uunet!munnari!ditmela!george From: george@ditmela.oz (George michaelson) Newsgroups: comp.protocols.tcp-ip Subject: Re: what is dynamic IP address assignment Message-ID: <2652@ditmela.oz> Date: 12 Oct 88 05:30:17 GMT Article-I.D.: ditmela.2652 References: <3921@Portia.Stanford.EDU> Organization: CSIRO Division of Information Technology, Australia Lines: 38 as a TCP novice I am probably way out of line here so please forgive me. I see some problems with this area. (1) what is the scope and validity of a temporary assignment within the INTERnet at large? (2) what is the threshold above which the net cannot cope with dynamic assignment? some peoples suggestions about what dynamic IP address assignment offer seem (to me at least) to float functionality which requires propagation of the new address "binding" out into the world. -If I wanted to take a portable IP-using box around the country, and somehow get an IP address at and somehow propagate that back to and thus read my mail, I'd be doing things like that wouldn't I? -ok, one can come up with back-of-envelope schemes which support in one persons phrase "reasonably small numbers of people doing this" but the network-at-large has 2.5Million+ end-users. 0.1% of this is really quite substantial traffic and address space. yes/no? fairly simple schemes where a pool of IP addresses are reserved for new machines already exist, Appletalk-ethernet gateways being examples. does one connect, grab subaddress, propagate, free, disconnect or what? how do you adjust the life of a temporary binding to cope with variable delay across the internet as you move around from point to point? If I've mis-understood the intent, do please put me right! -george -- George Michaelson, CSIRO Division of Information Technology ACSnet: G.Michaelson@ditmela.oz Phone: +61 3 347 8644 Postal: CSIRO, 55 Barry St, Carlton, Vic 3053 Oz Fax: +61 3 347 8987