Re: [apops] using NTP/etc to measure n/w latency?

  • To: apops at lists dot apnic dot net
  • Subject: Re: [apops] using NTP/etc to measure n/w latency?
  • From: "Henk Uijterwaal (RIPE-NCC)" <henk at ripe dot net>
  • Date: Tue, 24 Oct 2000 17:04:52 +0200 (CEST)
  • Cc: Neale Banks <neale at lowendale dot com dot au>, Philip Smith <pfs at cisco dot com>
  • In-reply-to: < at lint dot cisco dot com>
  • Sender:
    • Neale,
      > At 21:28 29/09/00 +1100, Neale Banks wrote:
      > >Does anyone have any pointers to using the likes of NTP to sample network
      > >latency?
      On Mon, 2 Oct 2000, Philip Smith wrote:
      > You could check out the Test Traffic project run by the RIPE NCC. More info 
      > at It's some what more 
      > sophisticated than using NTP though...
      If you are still interested in this, then it might be good to know that
      since last Friday, we're offering our measurement devices ("Test-boxes")
      (as well as a service for operating them) to everybody, against the cost
      of the hardware,
      Please see the attached mail for details, mail me if you have any further
      Date: Fri, 20 Oct 2000 15:17:10 +0200 (CEST)
      From: "Henk Uijterwaal (RIPE-NCC)" <henk at ripe dot net>
      To: tt-host at ripe dot net, tt-wg at ripe dot net, ripe-list at ripe dot net
      Subject: RIPE NCC Test-boxes and Test Traffic Measurements Service 
      Dear colleagues,
      (Apologies for any duplicate mails).
      The New Projects group at the RIPE NCC is pleased to announce that 25 new
      test-boxes have been delivered, tested and are ready to be installed at
      your site. More test-boxes will be assemble as soon as these 25 machines
      have been shipped. These test-boxes measure delays and losses on the
      Internet by sending time-stamped packets to each other. A more detailed
      description is available in RIPE document 209 (see below).
      At this moment, we are also moving the Test Traffic Measurements from an
      experimental product to a regular membership service offered by the RIPE
      NCC.  Under this service, the RIPE NCC will operate the test-box and
      analyze the measurement data for you.  With the introduction of this
      service, 2 restrictions will be removed:
        * The TTM service will be available to everybody interested, not just
          the current LIR members,
        * Any organization can apply for more than 1 test-box, and, for example,
          install a box at every major PoP.
      Another change is that you will have to pay for the hardware of the boxes.  
      A test-box currently costs 2750 Euro.  This includes the installation
      costs, but does not include shipping, taxes and import/export duties. The
      RIPE NCC has been asked to introduce a service fee (of approximately 3000
      Euro/Year) for the operation of the boxes.  However, for tax-reasons, it
      is currently not possible to do this.  Therefore:
        * There will be NO service fee for the remainder of 2000 and 
          the first months of 2001.
      For those of you familiar with the project, it is worth noticing that the
      hardware of the boxes has been improved. The most important change is in
      the design of the antenna.  In the new machines, the HF-unit has been
      moved to the antenna, thus eliminating the need for expensive coax cable
      between the antenna and the test-box itself.  Instead, regular CAT-5 cable
      can be used and cable lengths of (at least) 200 to 300 meters are
      Also, the boxes have more CPU and memory available and this feature will
      be exploited in the future do other measurements and analyze the data on
      the box, thus reducing the time between data-taking and availability of
      the results. In short, this means:
        * Easier installation
        * More freedom in installing the antennas.
      If you are interested in hosting a test-box, please start by reading the
      following documents, all available from the test-traffic web-site at
        * RIPE-209, "Providing Test Traffic Measurements as a membership
          service". This document describes the model the RIPE-NCC will use for
          selling the test-boxes and the related service for operating them.
        * RIPE-214, "General Terms to the RIPE-NCC Test Traffic Measurements and
          Test-Box Purchase Agreement".  This document contains the contract
          used to sell the test-boxes.  It is the translation of RIPE-209 
          into "legalise".
        * RIPE-168 (Version 2.1 or later).  This is the installation guide for
          the test-boxes.  The current document is somewhat outdated, in
          particular the section on the antenna installation.  An update will
          be published early November.
      A document that is presently being written is a "2 page glossy summary" of
      RIPE-209, describing the advantages of hosting a test-box for your
      If you are interested in hosting one or more test-boxes, please fill out
      the application sheet at  
      If anything is unclear or you have questions that are not answered in the
      documents, do not hesitate to contact us.  The application procedure has
      become a little more complex than before, but still shouldn't take much
      more than a few minutes to complete.
      Sites that have already expressed interest in hosting a box will be
      contacted in a separate mail.
      As announced before, we will give the existing test-box hosts a
      possibility to upgrade your hardware.  This will announced, when we are
      ready to do this, in a separate mail.
      There is no deadline for applying.  Applications will be processed in the
      order as they come in and processed as soon as our production schedule
      If you have any questions about this project, please do not hesitate
      to contact me.
      Kind regards,
      Henk Uijterwaal
      Henk Uijterwaal                    Email: henk.uijterwaal at ripe dot net
      RIPE Network Coordination Centre     WWW:
      Singel 258                         Phone: +31.20.535-4414,  Fax -4445
      1016 AB Amsterdam                   Home: +31.20.4195305
      The Netherlands                   Mobile: +31.6.55861746  
      A man can take a train and never reach his destination.
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