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Setting Up SyncE
- 09 Aug 2024
- 4 Minutes to read
- Contributors
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Setting Up SyncE
- Updated on 09 Aug 2024
- 4 Minutes to read
- Contributors
- Print
- PDF
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If your equipment has this optional hardware feature, you can use the synchronous Ethernet (SyncE) feature to synchronize the unit and all its outputs over Ethernet networks. SyncE takes the clock signal from the selected clock reference port and transmits it to all other ports. You also have the option to define a Secondary Clock Source on another physical port.
Note: When advertising a new clock class in SyncE and PTP a trap will now be generated and provide the new clock class, see article on MIB for more information. Management Information Base
To set up SyncE
Access the page Port ▶SyncE.
Select Enable SyncE.
Complete the required fields, then click Apply.
For more information on specific parameters, refer to the following tables.
SyncE/ESMC Parameters (Port ▶SyncE)
| Parameter | Description |
|---|---|
| Enable SyncE | Enables or disables the synchronous Ethernet feature.
|
Options
| Parameter | Description |
|---|---|
| Primary Clock Source | The port from which the Primary Reference Clock is recovered. |
| Secondary Clock Source | The port from which the Secondary Reference Clock is recovered. This parameter is optional and may be set to none if only a single reference clock is preferred. |
| Revertive | Enables or disables the revertive clock selection feature.
|
| Wait-to-Restore Delay (sec) | The system will wait for this many seconds before reverting to a clock available after a failure. Note: This feature applies when ESMC QL Mode is enabled. |
| Manual Clock Source | This sets the clock selector to use a specific clock source, regardless of priority. Note: The system will not switch to an invalid clock and it will not switch to a clock of inferior quality (if ESMC QL mode is enabled). If none is specified, the clock source is selected automatically. |
| ESMC QL Mode | Enable or disable the ESMC QL mode. ESMC QL messages containing clock quality information can be sent and received only if this is enabled. If enabled, clock quality information can then be used to automatically select the best clock reference available. |
| ESMC Forward extended TLV | ESMC messages may contain type-length-values (TLV) other than the mandatory QL TLV. These are referred to as extended TLVs. Their content is not used in the system. When enabled, extended TLVs will be forwarded from incoming SyncE ports to all outgoing SyncE ports; if not enabled, they are stripped out. Note: This feature applies when ESMC QL Mode is enabled. |
| ESMC Port Exclusion | The ESMC Port Exclusion box lists all available ports to choose from. When selected, ports will not transmit or receive ESMC QL messages. Note: An error message will pop up if the selected port is the same as the Primary or Secondary. Note: “Cltr + Clicking” on desired Port(s) to deselect. Note: This option is available for LX-SyncE only. |
Status
| Parameter | Description |
|---|---|
| Clock Selector | The clock source that is currently in use by the SyncE hardware. Possible values are:
|
| Primary Clock Status | The current status of the primary reference clock. |
| Secondary Clock Status | The current status of the secondary reference clock. |
| Clock Selection Change Count | The number of times the clock reference was changed. |
| Current QL State | The current QL status. Note: This feature is not available if ESMC QL Mode is disabled. |
| Previous QL State | The previous QL status with the time elapsed in seconds (with millisecond resolution) since the change occurred. Note: This feature is not available if ESMC QL Mode is disabled. |
| Previous Clock Selector | The previous clock selector with the time elapsed in seconds (with millisecond resolution) since the change occurred. |
Port Statistics Summary (only available if ESMC QL mode is enabled)
| Parameter | Description |
|---|---|
| Status | The following colors indicate SyncE port status:
|
| Port Name | The name that identifies the port. A link can be clicked to access detailed SyncE/ESMC port statistics. |
| Tx QL | Last transmitted clock QL on the port. Note: This Count will not increase if the statistic is cleared (displayed as 0). Note: Tx QL represents the last TX ESMC package, and should be kept as it is. |
| Rx QL | Last received clock QL on the port. . Note: This Count will not increase if the statistic is cleared (displayed as 0). Note: Rx QL represents the last RX ESMC package, and should be kept as it is. |
| QL State | Current QL receive status used for selection process if the port is a reference clock. Note: The QL-FAILED state indicates that the port is in a failed condition. |
| State Duration | Time elapsed in seconds since QL state was last changed. |
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