Alcatel-Lucent 7750 Configuration Manual page 458

PTP Commands
PTP Commands
ptp
Syntax ptp
Context config>system
Description This command enables the context to configure parameters for IEEE 1588-2008, Precision Time Protocol.
This command is only available on the control assemblies that support 1588.
shutdown
Syntax [no] shutdown
Context config>system>ptp
Description This command disables or enables the PTP protocol. If PTP is disabled, the router will not transmit any PTP
packets, and will ignore all received PTP packets. If the user attempts execute a no shutdown command on
hardware that does not support PTP, an alarm will be raised to indicate limited capabilities.
When PTP is shutdown, the PTP slave port is not operational. It shall not be considered as a source for
system timing.
On assemblies supporting a 1 PPS output interface, this command controls the presentation of a signal on
that interface. When PTP is enabled, the 1 PPS port is enabled, and it generates a pulse whose rising edge
represented the second rollover of the internal PTP time scale (that is, whenever the fractional second of the
time is exactly zero). When PTP is disabled, no signal is presented on the 1 PPS interface.
Default shutdown
anno-rx-timeout
Syntax anno-rx-timeout count
no anno-rx-timeout
Context config>system>ptp
Description This command configures the announceReceiptTimeout value for all peer associations. This defines the
number of Announce message intervals that must expire with no received Announce messages before
declaring an ANNOUNCE_RECIPT_TIMEOUT event.
The announce-rx-timeout cannot be changed unless PTP is shut down.
Default
3
Parameters
count — The announce packet interval, in log form.
Page 458 7750 SR Basic System Configuration Guide