Configure Aggregated SONET Minimum Links

On aggregated SONET interfaces, you can set the minimum number of links that must
be up for the bundle as a whole to be labeled up. To set the minimum number, include the minimum-links statement at the [edit interfaces interface-name aggregated-sonet-options] hierarchy level:

[edit interfaces interface-name aggregated-sonet-options]

minimum-links number; 

By default, minimum-link has a value of 1. number can be a value from 1 through 8.