From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gatekeeper1-relay.space.net (gatekeeper1-relay.space.net [IPv6:2001:608:3:85::38]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id C214B3CB37 for ; Tue, 25 Jun 2024 02:54:27 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=space.net; i=@space.net; q=dns/txt; s=esa; t=1719298468; x=1750834468; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=gkZPbWHubVWyqnZ2NfxAtfhLqmvUVrpmq8Bysftqo9Y=; b=hFhPLNJ1eVY76XPImnKi70WFeB+Sh4T8orN3uRa9u3ezm63peT/5RIHO huwIY7hACROsvCAFSWx07Z4+CnwnmyXcXyp6mDOJ4tQmjjkXBFHXb2865 PUUjCOv2K8Gu3GKOAiutu/jq3tiKRwYEr5TTdsesLtd8FwtnKWQuAeeKQ gab1XpIgeyjIDo7pz6SXNjdC3xyq8pReHwuA3aMnTOVReVwthiPcUqHOo OoBeLq6XaMjZMIjeiJubOISUyn1fl32o0pTwamjEVvchV5nuqj54kQf29 VVNzfIcywZG08KA6cL80OLmHTVIWX4B9+3b0ulnVaOtE9l5op8DaVK2sK A==; X-CSE-ConnectionGUID: 0qzWqgjCTB22zQk8tJqkGQ== X-CSE-MsgGUID: QMXfmQOJRSaBHwkdwwgtzQ== X-SpaceNet-SBRS: None Received: from mobil.space.net ([195.30.115.67]) by gatekeeper1-relay.space.net with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jun 2024 08:54:26 +0200 Received: from mobil.space.net (localhost [IPv6:::1]) by mobil.space.net (Postfix) with ESMTP id 2263942CA8 for ; Tue, 25 Jun 2024 08:54:26 +0200 (CEST) X-SpaceNet-Relay: true Received: from moebius4.space.net (moebius4.space.net [IPv6:2001:608:2:2::251]) by mobil.space.net (Postfix) with ESMTP id 109CD42C92; Tue, 25 Jun 2024 08:54:26 +0200 (CEST) Received: by moebius4.space.net (Postfix, from userid 1007) id 0E6052FB71; Tue, 25 Jun 2024 08:54:26 +0200 (CEST) Date: Tue, 25 Jun 2024 08:54:26 +0200 From: Gert Doering To: Sebastian Moeller Cc: David Lang , David Lang via Starlink , Ulrich Speidel Message-ID: References: <29b64dbf-34c4-4616-9724-9c79bdcc1bb4@auckland.ac.nz> <1p491rss-599n-n211-op44-1npn41p68005@ynat.uz> <974AF92C-907B-43A3-AC41-449FBAA5EFAE@gmx.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <974AF92C-907B-43A3-AC41-449FBAA5EFAE@gmx.de> Subject: Re: [Starlink] Jamaican Starlink Outages and a hint of shared infrastructure X-BeenThere: starlink@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Starlink has bufferbloat. Bad." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 25 Jun 2024 06:54:28 -0000 Hi, On Tue, Jun 25, 2024 at 07:37:40AM +0200, Sebastian Moeller via Starlink wrote: > My understanding is routing mostly follows the path of least cost... and is more complex then BGP makes it look, if two ASs have multiple handover points one still needs to pick one for each flow... and even for a simple route between two AS the forward and reverse path might use different hand-over points... think hot-potato routing. This is true, but BGP offers sufficient knobs to help in situations where the "naive" algorithms would fail to find the actual best path (for some definition of "best" - bandwidth, latency, monetary cost, ...). It gets more problematic when money or politics get in the way of "build good networks" - like, two major transit ISPs refusing to peer with each other, because both assert the other one should buy from them... and customers of both suffer. Gert Doering -- NetMaster -- have you enabled IPv6 on something today...? SpaceNet AG Vorstand: Sebastian v. Bomhard, Ingo Lalla, Karin Schuler, Sebastian Cler Joseph-Dollinger-Bogen 14 Aufsichtsratsvors.: A. Grundner-Culemann D-80807 Muenchen HRB: 136055 (AG Muenchen) Tel: +49 (0)89/32356-444 USt-IdNr.: DE813185279