Defining a clock source

Last Updated : Jul 07, 2023 |

Procedure

To define a potential clock source (T1/E1 Media Module, ISDN-BRI), run the following command: set sync interface primary|secondary mmID portID,

where:

  • mmID is the Media Module ID of an MM stratum clock source of the form vn, where n is the MM slot number

  • portID is the port number for an ISDN clock source candidate. The port ID consists of the slot number of the media module and the port number. You can set up multiple ports. For example, v2 1, 3, and 5-8.

Note:

The port ID parameter only applies if the source is a BRI module.

Setting the clock source to primary, normal failover occurs. The identity of the current synchronization source is not stored in persistent storage. Persistent storage is used to preserve the parameters set by this command.

Note:

Setting the source to secondary overrides normal failover, generates a trap, and asserts a fault. Thus, it is only recommended to set the clock source to secondary for testing purposes.