Configuring PTP Globally
You must configure PTP globally on a device. You can configure the PTP domain, clock mode, and priority at the device level. Based on these PTP parameters, the primary source will be selected from the clocks in a network.
To configure PTP globally:
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On the left navigation pane, click  , and then select Physical > Nodes. |
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In the Physical Nodes page, click the required cluster ID for which you want to configure PTP. |
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On the left-navigation pane, go to System > Settings > Date and Time > PTP. |
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Click New to open the PTP page. |
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In the Alias field, enter a unique name for the PTP template that you are configuring globally on the device. Ensure that you provide a unique name for each device in the cluster. You can also choose to leave the field blank and a default alias will be added automatically. For example, ptp_default_<box_id>. |
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From the Box ID drop-down list, select the box ID of the device for which you want to configure PTP. |
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In the Domain field, enter a PTP domain number that will be used for this clock. The valid range includes 0 and the numbers between 24 and 43. |
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Domain 0 for IEEE 1588 default profile. |
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Domain 24 - 43 for ITU-T G.8275.1 Telecom profile. |
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From the Mode drop-down list, select Boundary or Ordinary as the clock mode. The default is Boundary. |
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In the Priority 2 field, enter a priority value that will be used to determine the primary source in a network. For example, if there are two clocks in a network that match the default criteria, the clock that has the lower priority value will be selected as the primary source. The valid range is between 0 and 255. The default is 128. |
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In the Local Priority field, enter a priority value that will be used to determine the PTP source when the BMC algorithm chooses more than one clock as the source. This value overrides the default criteria for the BMC selection. The clock with the lower priority value will be selected. |
For example, on a particular device, the local priority of a port is compared with the local priority of the clock. Based on the following criteria, the source is determined:
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If the local priority of the port is greater than the local priority of the clock, the clock becomes the source. |
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If the local priority of the port is lesser than the local priority of the clock, the port becomes the source. |
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If the local priority of the port is equal to the local priority of the clock, the clock identity of the port and the clock is compared and the one that has the lower value becomes the source. |
The valid range is between 1 and 255. The default is 128.
