D-Link DGS-3630 User Manual 1 - Page 48
PTP P2P Transparent Port Settings
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DGS-3630 Series Layer 3 Stackable Managed Switch Web UI Reference Guide Parameter Description • E2E - This indicates that the port is configured to use the delay requestresponse mechanism. • P2P - This indicates that the port is configured to use the peer delay mechanism. Delay Request Interval Pdelay Request Interval Synchronization Interval Enter the delay request interval value here. This specifies the permitted mean time interval between successive delay request messages which are sent by a slave to a specific port on the master. This value is determined and advertised by the master. In line with the IEEE 1588 protocol, the value of delay request interval shall be an exponent of 2. In addition, this interval must be an integer with the minimum value being the sync-interval, and the maximum value being 32 times the sync-interval value. If the sync-interval is half a second and the delay request interval is 0, then the permitted time interval between successive delay request messages will be automatically adjusted to one second. The range is from 0 to 5. Enter the peer delay request interval value here. This specifies the permitted mean-time interval between successive peer delay request messages. In line with the IEEE 1588 protocol, this value must be represented as the logarithm to the base of 2 of this time, measured in seconds. The range is from 1 to 32 seconds. Enter the synchronization interval value here. This specifies the mean-time interval between successive synchronization messages. In line with the IEEE 1588 protocol, this value must be represented as the logarithm to the base of 2 of this time, measured in seconds. The range is from 1 to 2 seconds. Select the Half Second option to set 0.5 seconds as this value. Click the Apply button to accept the changes made. PTP P2P Transparent Port Settings This window is used to display and configure the peer delay request message interval on the P2P transparent clock port(s) specified. To view the following window, click System > PTP (Precise Time Protocol) > PTP P2P Transparent Port Settings, as shown below: Figure 3-32 PTP P2P Transparent Port Settings Window The fields that can be configured are described below: Parameter Unit Description Select the Switch unit that will be used for this configuration here. 36