Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!erlang.enet.dec.com!jain From: jain@erlang.enet.dec.com ("Raj Jain, DEC, 550 King St. LKG 1-2/A19, Littleton, MA 01460 01-Jan-1991 1607") Newsgroups: comp.protocols.tcp-ip Subject: New Technical Report on Congestion Available (DEC-TR-724) Message-ID: <9101012107.AA24762@decpa.pa.dec.com> Date: 1 Jan 91 21:10:59 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 27 The following DEC technical report is now available for external distribution. DEC-TR-724: Myths About Congestion Management in High-Speed Networks 10 pages. If you would like to receive a hard copy, please reply to this message with your address in a form suitable for direct application as a mailing label. Any other words or sentences in the reply will only delay the delivery. The abstract of the report is as follows: DEC-TR-724 Myths About Congestion Management in High-Speed Networks by Raj Jain Weaknesses in several recently proposed ideas about congestion control and avoidance in high-speed networks are identified. Both sides of the debate concerning prior-reservation of resources versus walk-in service, open-loop control versus feedback control, rate control versus window control, and router-based control versus source-based control are presented. The circumstances under which backpressure is useful or not useful are discussed, and it is argued that a single congestion scheme is not sufficient, but that a combination of several schemes is required for complete congestion management in a network.