3.8.2 Domain Number
Use this entry to set the Domain number to be included in the PTP packets. The domain number is a
method to allow multiple PTP servers on the same network, but to separate their traffic between client
devices.
3.8.3 Priority 1 & Priority 2
Allows setting the Priority 1 value in the packets
3.8.4 PTP Transmission Method
The PTP transmission method can be set to either Multicast or Unicast. Select the desired mode of
operation and click the Submit button.
3.8.5 PTP Post-Holdover Behavior
There are two options here: Update Clock Class to 52 which in the PTP protocol means: “A clock of
clock Class 52 shall not be a slave to another clock in the domain.” If set to Faulty, it will report as
Faulty and should not be synced to by a client.
Holdover time limits for the TM2000B are set in the
NTP settings page.
3.8.6 Multicast Configuration – Log Announce Interval
Set the announce message interval. The rate of sync packets is 2^(-value). The default setting of 1,
sets the interval at 2^(-1) = 0.5 packets per second, or every 2 seconds.
3.8.7 Multicast Configuration – Log Sync Interval
Sets the requested Sync Message Interval. The rate of sync packets is 2^(value). The default of -7,
therefore makes the default rate 2^-7 = 128 packets per second.
3.8.8 Multicast Configuration – Log Min Delay Request Interval
The minimum permitted mean time interval between Delay_Req messages. A shorter interval makes
the TM2000B react faster to the changes in the path delay. It's specified as a power of two in seconds.
Generally, this setting doesn't need adjustment on the TM2000B.
3.8.9 Multicast Configuration – Log min Peer Delay Request Interval
The minimum permitted mean time interval between Pdelay_Req messages. It's specified as a power of
two in seconds. Generally, this setting doesn't need adjustment on the TM2000B.
Installation and Operations Manual | Page 16
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