Difference between compatible mode and standard mode when the TOA board works in ODU1 convergence mode

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The only difference lies in internal port names.

Other related questions:
Difference between the standard mode and compatible mode of OSN 8800 boards
In V100R006C01 and later versions, some boards use a new board model. To distinguish the new board model from the existing board model, the new board model is called the standard mode and the original one is called the compatible mode. For boards in standard mode, the NMS displays the service mapping paths of trails or physical ports only, and all ODU-layer service mapping paths are displayed on physical ports. In standard mode, you do not need to consider logical ports of boards during cross-connect configuration. Compared with compatible mode, standard mode involves fewer mapping path layers, facilitating configuration and reducing maintenance costs.

Limitation on interconnection between a board in standard mode and a board in compatible mode when ASON is deployed
When a system uses ASON, a board in standard mode and a board in compatible mode can be interconnected with each other on the backplane side but cannot be interconnected on the WDM side. If an electrical-layer ASON service needs to traverse a board in standard mode, the version of the source NE must be V100R006C01 or later.

Whether boards in compatible mode and boards in standard mode can be interconnected or used together
1. On the backplane side, the boards in compatible mode and standard mode can be interconnected with each other without any restrictions. 2. On the line side, the boards in compatible mode and standard mode can be interconnected only when the following settings of the boards are the same: timeslot mode (Assign consecutive or Assign random), port rate (standard or speedup mode), mapping path, FEC mode, channel number, differential mode (differential or non-differential), and modulation format (DQPSK, DRZ, or ODB).

Compatible mode and standard mode
In V100R006C01 and later versions, some boards use a new board model. To distinguish the new board model from the existing board model, the new board model is called the standard mode and the original one is called the compatible mode. For boards in standard mode, the NMS displays the service mapping paths of trails or physical ports only, and all ODU-layer service mapping paths are displayed on physical ports. In standard mode, you do not need to consider logical ports of boards during cross-connect configuration. Compared with compatible mode, standard mode involves fewer mapping path layers, facilitating configuration and reducing maintenance costs. For example, among logical boards created on the NMS, 53TDX (STND) is in standard mode while 53TDX is in compatible mode, and 53ND2 is in standard mode while 53ND2 (COMP) is in compatible mode.

Difference between the random and consecutive modes for configuring ODU timeslots when the LOA board works in ODU0 non-convergence mode
If the ODU timeslot configuration mode is set to Assign random, the board supports Any->ODU0->ODU2->OTU2. If the ODU timeslot configuration mode is set to Assign consecutive, the board supports Any->ODU0->ODU1->ODU2->OTU2. The difference between the two modes lies in whether the ODU1 chip is involved in mapping processing for intra-board cross-connections.

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