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White Rabbit Switch - Software
Commit 64d6206e authored by Grzegorz Daniluk's avatar Grzegorz Daniluk
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doc/wrs_failures: use BC instead of Slave for the timing mode

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doc/wrs_failures/fail.tex
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...@@ -26,7 +26,7 @@ fail. The structure of each error description is the following: ...@@ -26,7 +26,7 @@ fail. The structure of each error description is the following:
\item [] \underline{Mode}: for timing failures, it describes which modes are \item [] \underline{Mode}: for timing failures, it describes which modes are
affected. Possible values are: affected. Possible values are:
\begin{packed_items} \begin{packed_items}
\item \emph{Slave} - the WR Switch has at least one Slave port \item \emph{Boundary Clock} - the WR Switch has at least one Slave port
synchronized to another WR device higher in the timing hierarchy (though synchronized to another WR device higher in the timing hierarchy (though
it may be also Master to other WR/PTP devices lower in the timing it may be also Master to other WR/PTP devices lower in the timing
hierarchy). hierarchy).
...@@ -64,7 +64,7 @@ WR network. ...@@ -64,7 +64,7 @@ WR network.
\begin{pck_descr} \begin{pck_descr}
\item [] \underline{Status}: DONE \item [] \underline{Status}: DONE
\item [] \underline{Severity}: ERROR \item [] \underline{Severity}: ERROR
\item [] \underline{Mode}: \emph{Slave} \item [] \underline{Mode}: \emph{Boundary Clock}
\item [] \underline{Description}:\\ \item [] \underline{Description}:\\
If the \emph{PTP/PPSi} WR servo goes out of the \texttt{TRACK\_PHASE} If the \emph{PTP/PPSi} WR servo goes out of the \texttt{TRACK\_PHASE}
state, this means something bad has happened and the switch lost the state, this means something bad has happened and the switch lost the
...@@ -86,11 +86,11 @@ WR network. ...@@ -86,11 +86,11 @@ WR network.
\begin{pck_descr} \begin{pck_descr}
\item [] \underline{Status}: DONE \item [] \underline{Status}: DONE
\item [] \underline{Severity}: ERROR \item [] \underline{Severity}: ERROR
\item [] \underline{Mode}: \emph{Slave} \item [] \underline{Mode}: \emph{Boundary Clock}
\item [] \underline{Description}:\\ \item [] \underline{Description}:\\
This may happen if the Master resets its WR time counters (e.g. because This may happen if the Master resets its WR time counters (e.g. because
it lost the link to its Master higher in the hierarchy or to external it lost the link to its Master higher in the hierarchy or to external
clock), but the Slave switch does not follow the jump. clock), but the WR Slave does not follow the jump.
\item [] \underline{SNMP objects}:\\ \item [] \underline{SNMP objects}:\\
{\footnotesize {\footnotesize
\snmpadd{WR-SWITCH-MIB::wrsPtpClockOffsetPs.<n>} -- value of the offset in ps\\ \snmpadd{WR-SWITCH-MIB::wrsPtpClockOffsetPs.<n>} -- value of the offset in ps\\
...@@ -106,7 +106,7 @@ WR network. ...@@ -106,7 +106,7 @@ WR network.
\begin{pck_descr} \begin{pck_descr}
\item [] \underline{Status}: DONE \item [] \underline{Status}: DONE
\item [] \underline{Severity}: ERROR \item [] \underline{Severity}: ERROR
\item [] \underline{Mode}: \emph{Slave} \item [] \underline{Mode}: \emph{Boundary Clock}
\item [] \underline{Description}:\\ \item [] \underline{Description}:\\
Once a WR link is established the round-trip delay (RTT) can change Once a WR link is established the round-trip delay (RTT) can change
smoothly due to the temperature variations. However, if a sudden jump is smoothly due to the temperature variations. However, if a sudden jump is
...@@ -152,10 +152,10 @@ WR network. ...@@ -152,10 +152,10 @@ WR network.
\item [] \underline{Severity}: ERROR \item [] \underline{Severity}: ERROR
\item [] \underline{Mode}: \emph{all} \item [] \underline{Mode}: \emph{all}
\item [] \underline{Description}:\\ \item [] \underline{Description}:\\
If the \emph{SoftPLL} loses lock, for any reason, Slave or Grand Master If the \emph{SoftPLL} loses lock, for any reason, Boundary Clock or
switch can no longer be syntonized and phase aligned with its time Grand Master switch can no longer be syntonized and phase aligned with
source. WRS in Free-running mode without properly locked Helper PLL is its time source. WRS in Free-running mode without properly locked Helper
not able to perform reliable phase measurements for enhancing Rx PLL is not able to perform reliable phase measurements for enhancing Rx
timestamps resolution. For a Grand Master the reason of \emph{SoftPLL} timestamps resolution. For a Grand Master the reason of \emph{SoftPLL}
going out of lock might be disconnected 1-PPS/10MHz signals or that the going out of lock might be disconnected 1-PPS/10MHz signals or that the
external clock is down. In that case, the switch goes into Free-running external clock is down. In that case, the switch goes into Free-running
...@@ -203,7 +203,7 @@ WR network. ...@@ -203,7 +203,7 @@ WR network.
\item [] \underline{Status}: DONE \item [] \underline{Status}: DONE
\item [] \underline{Severity}: ERROR (will become WARNING with the \item [] \underline{Severity}: ERROR (will become WARNING with the
switch-over) switch-over)
\item [] \underline{Mode}: \emph{Slave} \item [] \underline{Mode}: \emph{Boundary Clock}
\item [] \underline{Description}:\\ \item [] \underline{Description}:\\
If a Boundary Clock switch loses the link on its Slave port, the timing If a Boundary Clock switch loses the link on its Slave port, the timing
reference is lost. The switch resets counters responsible for keeping reference is lost. The switch resets counters responsible for keeping
...@@ -373,11 +373,11 @@ WR network. ...@@ -373,11 +373,11 @@ WR network.
\begin{pck_descr} \begin{pck_descr}
\item [] \underline{Status}: for later \item [] \underline{Status}: for later
\item [] \underline{Severity}: ERROR \item [] \underline{Severity}: ERROR
\item [] \underline{Mode}: \emph{Slave}, \emph{Grand Master} \item [] \underline{Mode}: \emph{Boundary Clock}, \emph{Grand Master}
\item [] \underline{Description}: \emph{(not yet implemented)}\\ \item [] \underline{Description}: \emph{(not yet implemented)}\\
In case the primary timing link breaks, switchover is responsible for In case the primary timing link breaks, switchover is responsible for
seamless switching to the backup one to keep the device in sync. If WRS seamless switching to the backup one to keep the device in sync. If WRS
operates in a \emph{Slave} mode, switchover is about switching operates in a \emph{Boundary Clock} mode, switchover is about switching
between two (or more) WR links to one or multiple WR Masters. If it between two (or more) WR links to one or multiple WR Masters. If it
operates in a \emph{Grand Master} mode, it is about broken/lost operates in a \emph{Grand Master} mode, it is about broken/lost
connection to an external reference and switching to a backup WR link connection to an external reference and switching to a backup WR link
......
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