User Guide

Configuring Switching
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GS716Tv3, GS724Tv4, and GS748Tv5 Smart Switches
7. In the Pdelay Interval field, specify the desired transmission rate of PDELAY_REQ
messages.
This value is the logarithm to the base 2 of the mean time interval between successive
PDELAY_REQ messages sent on this interface. The configured initial interval becomes
the current interval only after the port is initialized or re-initialized for 802.1AS operation.
8. In the Announce Interval field, specify the desired transmission rate of ANNOUNCE
messages.
This value is the logarithm to the base 2 of the mean time interval between successive
ANNOUNCE messages sent on this interface. The configured initial interval becomes the
current interval only after the port is initialized or re-initialized for 802.1AS operation.
9. Configure the SyncRx Timeout.
This value sets the number of SYNC intervals that have to pass without receipt of SYNC
information before considering that the master is no longer transmitting..
10. Configure the AnnounceRx Timeout.
This value sets the number of ANNOUNCE intervals that have to pass without receipt of
ANNOUNCE PDU before considering that the master is no longer transmitting.
11. Click the Apply button.
The following table describes the non-configurable information on the 802.1AS Port Settings
screen.
Table 48. 802.1AS port settings
Field Description
Port Role The 802.1AS role of the interface. The possible roles are as follows:
• Disabled (default)
•Master
•Slave
• Passive
Propagation Delay The mean propagation delay on the interface
Measuring Pdelay Indicates whether the interface is receiving PDELAY response
messages from other end of the link.
802.1AS Capable Indicates whether the interface is 802.1AS capable. By default, the
interface is not 802.1AS capable.
Neighbor Rate Ratio An estimated ratio of the frequency of the local clock entity of the
time-aware system at the other end of the link attached to this port, to
the frequency of the local clock entity of this time-aware system.
Current Sync Interval The current mean time interval between successive SYNC messages
sent over a link, in logarithm to base 2 format.