From owner-freebsd-questions@FreeBSD.ORG Mon Apr 24 09:31:22 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 15A8E16A402 for ; Mon, 24 Apr 2006 09:31:22 +0000 (UTC) (envelope-from on@cs.ait.ac.th) Received: from mail.cs.ait.ac.th (mail.cs.ait.ac.th [192.41.170.16]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3FC5143D48 for ; Mon, 24 Apr 2006 09:31:20 +0000 (GMT) (envelope-from on@cs.ait.ac.th) Received: from banyan.cs.ait.ac.th (banyan.cs.ait.ac.th [192.41.170.5]) by mail.cs.ait.ac.th (8.13.1/8.12.11) with ESMTP id k3O9UtsE043412 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 24 Apr 2006 16:30:55 +0700 (ICT) Received: (from on@localhost) by banyan.cs.ait.ac.th (8.13.3/8.12.11) id k3O9Ur4r071675; Mon, 24 Apr 2006 16:30:53 +0700 (ICT) Date: Mon, 24 Apr 2006 16:30:53 +0700 (ICT) Message-Id: <200604240930.k3O9Ur4r071675@banyan.cs.ait.ac.th> From: Olivier Nicole To: kdk@daleco.biz In-reply-to: <444BF77F.805@daleco.biz> (message from Kevin Kinsey on Sun, 23 Apr 2006 16:54:07 -0500) References: <20060422223656.N82934@bravo.pjkh.com> <95793D90-82AC-4232-86D6-60B9C86762E3@dpcsys.com> <444BF77F.805@daleco.biz> X-Virus-Scanned: on CSIM by amavisd-milter (http://www.amavis.org/) Cc: freebsd-questions@freebsd.org Subject: Re: Simluating a satellite connection using dummynet? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 24 Apr 2006 09:31:22 -0000 >> I've been reading up on it and best I can tell I'm looking >> at 1000ms round trips... at *best*. Most of what I do >> I can do on servers at home, but there will be the >> occasional ssh, etc. Supposedly, the round trip should be only 500 ms: the time for the signal to go from earth to the satellite and back to earth, then the same time for the reply packet to come back. On the machine directly connected to the satellite modem, a ping to the machine at the other end, directly connected to the satellite modem (so the 2 machine as close as possible to the satellite equipment) I get a ping round trip of 800 ms. That speed is pretty workable for ssh/telnet, even for a full screen editor. Olivier