XLi IEEE 1588 Clock 121
997-01510-03, Rev. C, 12/12/2006
2
5
1
SSSSSSSSSSSS SSSSSSSSSS SSSSSSS S SSS S SSSSS S
PTP burst mode enabled/disabled
With Burst mode enabled, the PTP slave initiates a rapid exchange or PTP messages with the PTP
master in order to synchronize rapidly. To work, Burst mode must be enabled on both PTP master and
slave. This corresponds to the PTP_BURST_SYNC = TRUE in a standard ptpd implementation. Burst
mode is recommended for rapid synchronization of timing networks upon startup and also with longer
sync message intervals (e.g., 64 seconds). PTP burst mode consumes network bandwidth and places
additional demand on PTP masters and slaves on the same timing network. It may saturate PTP
masters and timing networks operating near capacity, particularly if the slaves are all reinitialized at the
same time (e.g., a system wide power-cycle). The default factory setting is “disabled”.
PTP network port enabled/disabled
Enables or disables the PTP/1588 network port. This feature can be used to put specific PTP nodes
offline without shutting them down. The default factory setting is “Enabled”.
PTP subdomain same
Makes it possible to establish up to four separate timing networks on the same physical subnet. PTP
nodes only synchronize with PTP nodes of the same subdomain; they disregard PTP nodes that are part
of a different subdomain. Configure the PTP masters and PTP slaves with the same subdomain in order
for them to synchronize. The following four subdomain name settings are available: _DFLT, _ALT1,
_ALT2, and _ALT3. The default factory setting is “_DFLT”.
Reset PTP settings to factory defaults
Re-initializes the PTP node and returns the following settings to their factory defaults:
• PTP SYNC INTERVAL - 2
• PTP BURST MODE - DISABLE
• PTP PORT STATE - ENABLE
• PTP SUBDOMAIN NAME - _DFLT
• PTP CLOCK CONFIG, BAY 2 - MASTER
• SLAVE SYNC THRESHOLD - 5 microsec
• PTP PREFERRED MASTER - DISABLE
The other settings remain unchanged.
The default setting is “No”.
PTP initialize to user entered values
Re-initializes the PTP node and keeps the current parameter settings:
The default factory setting is “No”.