From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sandelman.ca (relay.cooperix.net [IPv6:2a01:7e00::f03c:91ff:feae:de77]) by huchra.bufferbloat.net (Postfix) with ESMTP id 95B0321F6F4 for ; Fri, 1 Aug 2014 06:20:58 -0700 (PDT) Received: from sandelman.ca (unknown [209.87.249.16]) by relay.sandelman.ca (Postfix) with ESMTPS id 93F76220B2; Fri, 1 Aug 2014 09:20:56 -0400 (EDT) Received: from sandelman.ca (quigon.sandelman.ca [127.0.0.1]) by sandelman.ca (Postfix) with ESMTP id A5275CA0DD; Fri, 1 Aug 2014 00:51:08 -0400 (EDT) From: Michael Richardson To: Sebastian Moeller In-reply-to: References: <598BFF8C-37B6-4F5B-9F0D-A0D69A1F32B7@gmx.de> Comments: In-reply-to Sebastian Moeller message dated "Sun, 27 Jul 2014 13:38:33 +0200." X-Mailer: MH-E 8.2; nmh 1.3; GNU Emacs 23.4.1 MIME-Version: 1.0 Content-Type: multipart/signed; boundary="==-=-="; micalg=pgp-sha1; protocol="application/pgp-signature" Date: Fri, 01 Aug 2014 00:51:08 -0400 Message-ID: <13043.1406868668@sandelman.ca> Sender: mcr@sandelman.ca Cc: Wes Felter , cerowrt-devel@lists.bufferbloat.net Subject: Re: [Cerowrt-devel] Ideas on how to simplify and popularize bufferbloat control for consideration. X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Aug 2014 13:20:58 -0000 --==-=-= Content-Type: multipart/mixed; boundary="=-=-=" --=-=-= Sebastian Moeller wrote: > No idea? How would you test this (any command line to try). The good > thingg with the ping is that often even the DSLAM responds keeping > external sources (i.e. hops further away in the network) of variability > out of the measurement... With various third-party-internet-access ("TPIA" in Canada), the DSLAM is operated by the incumbent (monopoly) telco, and the layer-3 first hop is connected via PPPoE-VLAN or PPP/L2TP. The incumbent telco has significant incentive to make the backhaul network as congested and bufferbloated as possible, and to mis-crimp cables so that the DSL resyncs at different speeds regularly... my incumbent telco's commercial LAN extension salesperson proudly told me how they never drop packets, even when their links are congested!!! The Third Party ISP has a large incentive to deploy equipment that supports whatever "bandwidth measurement" service we might cook up. --=-=-= Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Content-Description: Signature =2D-=20 Michael Richardson =2Don the road- --=-=-=-- --==-=-= Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQEcBAEBAgAGBQJT2xy5AAoJEKD0KQ7Gj3P2elkH/RIHAGc+uvF99GDa1EjtCFuI kv4X9BFibevfCyQE13ooCHCaUa0baQIYkbpPgXM6hbMbMhhEisMm9akcoyLaPP9M F5hkzOMpUNpvdZJvsIQI9xyYEBLELxg3KXC3BkZlbBK9TVkE3NzA7cEhClFwF5jO od4PiZJ7bYTpQFjKy7j22g1kxyl2g+KabUEVLpcBySb7gRHr/+CyQOK/1bXn6K8A lIdHdE10o0Pue8XRl5OaVwWqesKMWge24HYplPq2Qu5DukCo1qI6lgEA1Zqdpgqt KVhmxbkx0IoJNsioRPu2KCC2YjD+8TyVcE2ovHeCrK4R7oXEg++i71eq5CeewSU= =M8g7 -----END PGP SIGNATURE----- --==-=-=--