The WDM equipment supports the management of master/slave subracks. When multiple subracks are required for an NE, the master/slave subrack mode must be adopted for centralized management. In the master/slave subrack mode, the master subrack and its multiple slave subracks are displayed as one NE in the network management system. They share the same NE ID and IP address.
Generally, the subrack where the optical amplifier board, optical supervisory channel (OSC) board, and fiber interface unit (FIU) exist is selected as the master subrack.
The OptiX OSN 1800 (NA), OptiX OSN 6800A, OptiX OSN 8800 T16 (NA), OptiX OSN 8800 T32 (NA) and OptiX OSN 8800 T64 (NA) support master/slave subrack configuration.
NOTICE: When the master and slave subracks are all the optical subracks, an NE can manage up to 32 optical subracks. When the master and slave subracks are the optical and electrical subracks, an NE can manage up to 16 OptiX OSN 6800A subracks and the maximum number of the OptiX OSN 8800 (NA) series subracks in an NE is calculated according to the equivalent coefficient. When excessive subracks are configured in an NE, a fault may occur.
An optical subrack is the subrack that contains only optical-layer boards. An electrical subrack is the subrack that contains only electrical-layer boards.
An OptiX OSN 8800 T32 (NA) subrack is equivalent to two OptiX OSN 6800 subracks and an OptiX OSN 8800 T64 (NA) subrack is equivalent to four OptiX OSN 6800A subracks.