From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ot1-x32c.google.com (mail-ot1-x32c.google.com [IPv6:2607:f8b0:4864:20::32c]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 86CFE3B29D for ; Tue, 18 Apr 2023 09:01:29 -0400 (EDT) Received: by mail-ot1-x32c.google.com with SMTP id 46e09a7af769-6a5f8e1f6d1so237235a34.0 for ; Tue, 18 Apr 2023 06:01:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1681822888; x=1684414888; h=content-transfer-encoding:to:subject:message-id:date:from :references:in-reply-to:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=89Qb8c7mAAgk+oLi3bkibyneSS94GVgUU4AFMKULLcI=; b=hBskHxlgK/k+7xZAJp2K5Bkq3NzcGX2H3MaOVwMNMALWdwHGabenIdJ7WgQesII2Kh Tv8rBhkSurbBc36wfQApj80L9Q2CP8FOUQSz5dubIVNrV41W3eagoyRCjHzSZStPC/xx xJYerHIM1PUxrP8cFqJTwuzXxvb1pYRP8gpFwRv3scUs7BvcCUQIV42X6O0RoOomQhmB i9Fbyx6iE+VBRd52IkLmDf8bE1ZkZBhyMbtLcS5SA0bR/44nKZ+gbV5v93TC6DSFhWbB jve3nNY7wr6GCHg0DRk4OPKS6cZikJrT6Kecw2N0gVSzUFf0ZJtEXC+fUSckWBWIoxig 3Fhw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681822888; x=1684414888; h=content-transfer-encoding:to:subject:message-id:date:from :references:in-reply-to:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=89Qb8c7mAAgk+oLi3bkibyneSS94GVgUU4AFMKULLcI=; b=BeIMMt1wIN2zSN9RLgK4imZ2UAEMze+Fft01OhBxN76gRGU+RxFjZoPYOoN0MeBbD7 aNxQxE4D+/xnSmpDAClRoLNvKUhyMUG/CY34TPz6yLPKeWm1qA0GNDelopL2H3jkGr7I uKpiMl8Uq8vJRka2NgAH0o5oyI03VeWUpOSodbufozr4sA1yH2hw17qegPgO8B3YMdXN IFvbjf05K2G0Bp/Jk2G6fzFnD2DAqN+8XHNxTP89oH1oy6eONYd4Fja1MBMJd7bE+WE4 7D5iTixNFTMJ4Js4+m4J0xqD2GEEaSAwtNY7MfB5B3CNa+19mqmQ49l96hUVPO980pcP fX9g== X-Gm-Message-State: AAQBX9czZ67ScQE5VyR9eJbRhuTcgJxeACfHFiDka/dgBVdsXJ9KjkxG GNAbWMaxua6Zf4/YbVHcgA5KyNPDi0VbegXT6m1AeeNoi8Nozw== X-Google-Smtp-Source: AKy350YKm41zc4v1dnd54vtUpTxA/KKH0J9raQj8KXYq5mbhHpTtUG/3AvDtBVufe+QWzY2pM4x+sowFrNjPYwhpbvs= X-Received: by 2002:a05:6830:168f:b0:6a4:16ad:bf70 with SMTP id k15-20020a056830168f00b006a416adbf70mr658814otr.0.1681822888451; Tue, 18 Apr 2023 06:01:28 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:a05:6358:10a:b0:118:4a30:b981 with HTTP; Tue, 18 Apr 2023 06:01:27 -0700 (PDT) In-Reply-To: References: From: =?UTF-8?Q?David_Fern=C3=A1ndez?= Date: Tue, 18 Apr 2023 15:01:27 +0200 Message-ID: To: "starlink@lists.bufferbloat.net" Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: Re: [Starlink] fiber IXPs in space 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, 18 Apr 2023 13:01:29 -0000 AFAIK, Starlink satellites are Linux machines, so they could be acting as routers, but they are not routing user data. I bet they have IP addresses for management purposes in a separate set of links for satellite platform control. The decision to make them transparent to user networking is independent on whether or not the satellites are capable of doing routing. Clearly, SpaceX does not see any advantage on making the satellites routers, so they are just link layer data relays. The fact that they will start having ISLs may not change that, most likely. Regards, David 2023-04-18 7:59 GMT+02:00, Chris J. Ruschmann : > What makes you think each Starlink satellite doesn't have a router on boa= rd? > Just Curious... > > I think they are more complex than most people or you think. > > -----Original Message----- > From: Starlink On Behalf Of Davi= d > Fern=C3=A1ndez via Starlink > Sent: Sunday, April 16, 2023 9:54 AM > To: starlink@lists.bufferbloat.net > Subject: Re: [Starlink] fiber IXPs in space > > CAUTION: This email originated from outside of the organization. Do not > click links or open attachments unless you recognize the sender and know = the > content is safe. > > > > In case you put a DNS server in the satellite, so that it replies instead= of > a DNS server on ground, the RTT is reduced by half. > > The idea would be that the satellite inspects IP packets and when it dete= cts > a DNS query, instead of forwarding the packet to ground station, it just > answers back to the sender of the query. > > Nowadays, satellites (starlink included) are still transparent and are > signal repeaters, not routers processing IP packets, so doing this is not > immediate at all, but it could bring some benefits. > > CDNs or even datacenters (Cloud) in GEO or LEO is even more complex. > > Regards, > > David > _______________________________________________ > Starlink mailing list > Starlink@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/starlink >