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From: paul@uxc.cso.uiuc.edu (Paul Pomes - UofIllinois CSO)
Newsgroups: comp.protocols.tcp-ip
Subject: Re: Is the Internet usable for wide-area interactive conversations?
Message-ID: <1991Jun18.173219.4496@ux1.cso.uiuc.edu>
Date: 18 Jun 91 17:32:19 GMT
References: <2039.Jun1803.33.1391@kramden.acf.nyu.edu>
Sender: usenet@ux1.cso.uiuc.edu (News)
Reply-To: Paul-Pomes@uiuc.edu
Organization: University of Illinois at Urbana
Lines: 20

brnstnd@kramden.acf.nyu.edu (Dan Bernstein) writes:

>Keep in mind that an active TCP connection---e.g., a remote login---dies
>the second that the network becomes unreachable. An objective observer
>would have to conclude that, no matter how good the IP service was while
>it was responding, the network was simply unusable for interactive work
>during this period.

You must have an older TCP.  Berkeley TCP ignores net/host unreachables
once the connection is established.

600 lines of ping data is not that informative.  traceroute data before,
during, and after the glitches would help a lot more.  There were also
power outages affecting SURAnet yesterday that may have had an affect.

/pbp
--
Paul Pomes, Computing Services Office
University of Illinois - Urbana
Email to Paul-Pomes@uiuc.edu