Resolving the cross-connection creation failure when THA boards exist in both non-convergence and convergence modes

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1. Check whether the working mode of port 209 (ClientLP9/ClientLP9) where the cross-connection is created is ODU1 convergence mode.
2. Check whether the service type of port 209 (ClientLP9/ClientLP9)-2 is STM-1.
3. If the configuration of port 209(ClientLP9/ClientLP9) is correct, the source optical port may be faulty. When the following conditions are met:
Port 209(ClientLP9/ClientLP9) works in ODU1 convergence mode.
The other logical ports work in ODU0 non-convergence mode.
The client-side optical ports (RX/TX) and the logical ports (ClientLP) are in one-to-one mapping in the ODU0 non-convergence mode.

From the above analysis, the source optical port 13 (RX11/TX11) used for the cross-connection created by the user has been mapped with port 211 (ClientLP11/ClientLP11). Therefore, no more cross-connection can be created at another ClientLP port. To create a cross-connection from port 13 (RX11/TX11) to 209 (ClientLP9/ClientLP9), you need to set the working mode of port 211(ClientLP11/ClientLP11) to ODU1 convergence mode.

Other related questions:
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.

Difference between compatible mode and standard mode when the TOA board works in ODU1 convergence mode
The only difference lies in internal port names.

Cross-connection mode that the system preferentially selects when both the distributed cross-connection and centralized cross-connection are supported
The system preferentially uses the distributed cross-connection.

Cause why THA provides 32 ClientLP ports but supports only 16 ODU0 services in ODU0 non-convergence mode
It is normal. The 32 ClientLP ports on the client side of a THA board are mainly used when the THA board is interconnected with a TOM board. If the first logical port of the TOM board uses channel 1, its second logical port can use only channel 2. When the THA board is interconnected with the TOM board, the two boards must use the same channel. For example, if the TOM board uses channel 2, the THA board must also use channel 2; otherwise, services will become abnormal. Therefore, two channels are designed for the THA board in ODU0 non-convergence mode.

Reason for not selecting TX1/RX1 to transmit FC400 services on the LOA board in ODUflex non-convergence mode
When an LOA board works in ODUflex non-convergence mode, the TX1/RX1 port corresponds to the 201ClientLP port, and no service needs to be configured between the two ports. Therefore, when FC400 services need to be transmitted through the TX1/RX1 port, select the 201ClientLP port on the NMS.

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