commit bf6a42e9f3d1a2c398d615a941b6f9c91606ba2a Author: Stephen Wadeley swadeley@redhat.com Date: Tue Aug 27 09:32:52 2013 +0200
Adding an image in section id="Understanding_PTP" ptp_grandmaster_boundary_and_slaves.png
en-US/Configuring_PTP_using_ptp4l.xml | 13 +++++++++++++ .../images/ptp_grandmaster_boundary_and_slaves.png | Bin 0 -> 58960 bytes 2 files changed, 13 insertions(+), 0 deletions(-) --- diff --git a/en-US/Configuring_PTP_using_ptp4l.xml b/en-US/Configuring_PTP_using_ptp4l.xml index 61c9687..22b64dc 100644 --- a/en-US/Configuring_PTP_using_ptp4l.xml +++ b/en-US/Configuring_PTP_using_ptp4l.xml @@ -17,6 +17,19 @@ <para> The clocks synchronized by <systemitem class="protocol">PTP</systemitem> are organized in a master-slave hierarchy. The slaves are synchronized to their masters which may be slaves to their own masters. The hierarchy is created and updated automatically by the <firstterm>best master clock</firstterm> (<acronym>BMC</acronym>) algorithm, which runs on every clock. When a clock has only one port, it can be <firstterm>master</firstterm> or <firstterm>slave</firstterm>, such a clock is called an <firstterm>ordinary clock</firstterm> (<acronym>OC</acronym>). A clock with multiple ports can be master on one port and slave on another, such clock is called a <firstterm>boundary</firstterm> clock (<acronym>BC</acronym>). The top- level master is called the grandmaster clock, which can be synchronized by <firstterm>Global Positioning System</firstterm> (<acronym>GPS</acronym>). By using a GPS-based time source, disparate networks can be synchronized with a high-degree of accuracy . </para> + <figure id="exam-Understanding_PTP"> + <title>PTP grandmaster, boundary, and slave clocks</title> + <mediaobject + id="mediaobj-ptp_grandmaster_boundary_and_slaves.png"> + <imageobject> + <imagedata + scalefit="0" + fileref="images/ptp_grandmaster_boundary_and_slaves.png" + format="PNG" /> + </imageobject> + <textobject><para>An illustration showing PTP grandmaster, boundary, and slave clocks</para></textobject> + </mediaobject> + </figure> </section> <section id="Advantages_Of_PTP"> <title>Advantages Of PTP</title> diff --git a/en-US/images/ptp_grandmaster_boundary_and_slaves.png b/en-US/images/ptp_grandmaster_boundary_and_slaves.png new file mode 100644 index 0000000..636982b Binary files /dev/null and b/en-US/images/ptp_grandmaster_boundary_and_slaves.png differ
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