Rockwell Automation 1783-BMxxx Stratix 5700 Ethernet Managed Switches User Manual - Manual (Page 146)

146 Rockwell Automation Publication 1783-UM004E-EN-P - June 2014
Chapter 4 Manage the Switch via the Device Manager Web Interface
To configure PTP, from the Configure menu, choose PTP.
Once you choose a mode, you can edit the settings for each port. The parameters
depend on the selected mode. You can configure per-port PTP when the switch is
in Boundary mode or End-to-end Transparent mode.
Table 16 - PTP Fields
Field Description
Mode Choose a PTP mode:
• Boundary—Synchronizes all switch ports with the Grandmaster clock by using the IEEE 1588 V 2 Boundary clock
mechanism.
• End-to-End Transparent—Calculates and adds the switch delay into the PTP packet by using the IEEE 1588 V2 End-
to-End Transparent clock mechanism. In this mode, all switch ports are PTP-enabled. In boundary mode, one or
more switch ports can be PTP-enabled. You can enable or disable PTP on a per-port basis.
• Forward (default)—Passes PTP packets through without interference.
Priority 1 The switch used to override the default criteria, such as clock quality or clock class, for the best master clock selection.
Priority 2 The switch used as a tie-breaker between two devices that are otherwise equally matched in the default criteria. For
example, you can give a specific switch priority over other identical switches. The range is from 0…255. A lower values
take precedence. The default is 128.
Clock Identity The clock source.
Offset from Master (ns) The accuracy in nanoseconds from the Grandmaster clock.
Port Name The number of the switch port, including port type (such as Fa for Fast Ethernet and Gi for Gigabit Ethernet), the base
switch number (1), and the specific port number. For example: Fa1/1 is Fast Ethernet port 1 on the base switch.
State (Boundary mode only). The synchronization state on the switch port with the parent or Grandmaster clock:
• Listening—The switch port is waiting while a parent or Grandmaster clock is selected.
• Pre-master—The switch port is transitioning to change to Master state.
• Master—The switch is acting as a parent clock to the devices connected to that switch port.
• Passive—The switch has detected a redundant path to a parent or Grandmaster clock. For example, two different
switch ports claim the same parent or Grandmaster clock. To prevent a loop in the network, one of the ports changes
to Passive state.
• Uncalibrated—The switch port cannot synchronize with the parent or Grandmaster clock.
• Slave—The switch port is connected to and synchronizing with the parent or Grandmaster clock.
• Faulty—PTP is not operating properly on that switch port.
• Disabled—PTP is not enabled on the switch port.
Enable When at least one switch port is PTP-enabled, the Forward mode is selected by default:
You can enable or disable PTP on a per-port basis.