Newsgroups: comp.mail.uucp
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!uupsi!schoff
From: schoff@uu.psi.com (Martin Schoffstall)
Subject: Re: UUPSI's new rules
Message-ID: <1991Mar25.200324.22500@uu.psi.com>
Organization: Performance Systems International, Inc.
References: <1991Mar19.020431.28067@jpradley.jpr.com> <5060@lgnp1.ls.com> <1991Mar23.155949.20164@tygra.UUCP>
Date: Mon, 25 Mar 91 20:03:24 GMT

>One thing about PSI that is a big drawback is the fact that you cannot get
>an IP address with their HOST-DCS service. Each time you dial into one of
>their POP's, you get assigned a temporary IP address.

This is ONE of the services that we offer, other services such
as CCS and SCS do not have this "limitation".

>The result: No one can
>TELNET/FTP to your site. It seems to be a trivial problem for them to 
>reprogram their routers to know what POP each of their customers  is assigned
>to and send any queries/connection requests to that POP when a connection is
>requested to one of their customers. The worst that can happen is: NOT
>RESPONDING - TIMED OUT.

I'm not sure if cisco/proteon/wellfleet/nsc would agree that it is
trivial to reprogram their routers; however, on-demand Internet
access is not trivial either.

There are questions such as

(1) is "on-demand" address assignment a good thing?  From looking
at the PPP spec and some implementations it appears that the answer
is yes.  It is probably a good thing from the perspective of the
Internet Address space also, right now the only granularity of long
term official address assignment is 8 bits (a whole class C network
number).

(2) is "on-demand" client-only access to the Internet useful,
(HOST-DCS)?  I think
the answer is yes.  There appear to be 100,000's of Internet
hosts which are client-only today.  With Intercon/FTPSoftware/etc
support POP3 et al of the standard uses (ftp/telnet/mail) are
provided.

(3) is there going to be changes and evolution in the future?
	Absolutely, the Internet, internetworking products, etc
	are rapidly evolving.


Marty