Reconstruction needs to be performed for a complicated network by a representative office. The network topology is as follows:
Metro 100 non-protection chain <----> OSN 2500 SNCP ring <----> OSN 3500 SNCP ring
One day, the customer changed the OptiX Metro 100 non-protection chain to a ring and configured the ring for SNCP. The services from the Metro 100 to the backbone OptiX OSN 3500 ring were required to be protected.
The operation is as follows: