Rockwell Automation Publication 1783-UM007G-EN-P - February 2017 199
Configure Switch Features Chapter 7
Figure 4 - End to End Transparent Mode
Announce Interval Type the time interval, specified as the logarithmic mean in seconds, for sending announce messages.
Valid values:
• 0—1 second
• 1—2 seconds
• 2— 4 seconds
• 3— 8 seconds
• 4—16 seconds
Default: 1 (2 seconds)
Sync Interval Type the time interval, specified as the logarithmic mean in seconds, for sending synchronization messages.
Valid values:
• -1—half second
• 0—1 second
• 1— 2 seconds
Default: 0 (1 second)
Sync Fault Limit Type the maximum clock offset before PTP attempts to reacquire synchronization.
Valid values: 50…500000000 nanoseconds
Default: 50000 nanoseconds
IMPORTANT: We recommend against setting the sync limit below the default (50000 nanoseconds). Use values below 50000 nanoseconds only in
networks with a very high-precision grandmaster clock. These networks have a critical need to keep very sensitive devices synchronized.
Vlan Id
(Not available on
Stratix 8000/8300 switches)
To configure PTP on a VLAN of a trunk port, type the VLAN ID. Only PTP packets in the VLAN you specify are processed. PTP packets from other
VLANs are dropped. You can only enable PTP on one VLAN on a trunk port.
Valid values: 1…4094
The default is the native VLAN of the trunk port.
Table 33 - Boundary Mode Fields (continued)
Field Description
Table 34 - End to End Transparent Mode Fields
Field Description
PTP Device Type Displays the PTP clock type of the switch, as determined by the Mode setting.
Number of PTP ports Displays the number of ports assigned to the PTP clock.
Local clock time Displays the time stamp of the local clock.
Device Time Source Displays the time source used by the switch.
Device Clock Time Displays the time on the switch, obtained from the time source.
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