D-Link DGS-3630-28SC Web UI Reference Guide 2 - Page 37

DGS-3630 Series Layer 3 Stackable Managed Switch Web UI Reference Guide Parameter PTP Transport Protocol Description delay of the link. The link, in this case, is connected to the port that is receiving the PTP event messages. Ports on peer-to-peer transparent clocks use the peer delay mechanism to calculate the propagation delay between PTP ports. • E2E Transparent - Specifies the Switch as an End-to-End Transparent Clock. An End-to-End Transparent Clock supports the use of an end-to-end delay measurement mechanism between the slave clock and the master clock. Ports on end-to-end transparent clocks are independent of propagation delay mechanisms. Select the PTP transport protocol here. Options to choose from are: • Ethernet - Specifies the transport protocol of PTP as IEEE802.3 Ethernet. • UDP - Specifies the transport protocol of PTP as UDP over IPv4. Click the Apply button to accept the changes made. The fields that can be configured in PTP Clock Domain Settings are described below: Parameter Unit PTP Clock Domain Number PTP Clock Domain Name Description Select the Switch unit that will be used for this configuration here. Enter the PTP clock domain number here. All PTP messages, data sets, state machines, and all other PTP entities are always associated with a particular domain number. The range is from 0 to 127. Enter the PTP clock domain name here. The name is used for user reference. This name can be up to 32 characters long. Click the Apply button to accept the changes made. The fields that can be configured in PTP Boundary Clock Settings are described below: Parameter Priority 1 Priority 2 Description Enter the PTP boundary clock Priority 1 value here. The priority 1 attribute is used in the execution of the Best Master Clock algorithm. A lower value takes precedence. Zero indicates the highest precedence. The range is from 0 to 255. Enter the PTP boundary clock Priority 2 value here. The priority 2 attribute is used in the execution of the Best Master Clock algorithm. A lower value takes precedence. In the event that the BMC algorithm fails to order the clocks based on the values of priority 1, the clock's class, and the clock's accuracy; the priority 2 attribute will allow the creation of lower values compared to the other devices. Zero indicates the highest precedence. The range is from 0 to 255. Click the Apply button to accept the changes made. When the stacking mode is enabled and the member ports of the trunk group exist in different stack units, the PTP function may not function properly. For example: • The PTP feature will function properly when the member ports receive and send PTP messages on the same stacked unit. • The PTP feature will not function properly when the member ports receive and send PTP messages on different stacked units. Therefore, it is recommended not to enable the PTP feature on a trunk group that exists in different stack units. 25