What are precautions for the ETHB when it functions as the upstream board of the Huawei MA5608T ?

The following operations are required when the ETHB functions as the upstream board of the Huawei MA5608T:

1. In the board mode, run the network-role uplink command to set the ETHB as the upstream board. After this, isolation between the ETHB and other service boards is canceled.

2. In the global config mode, run the undo isolate board command to cancel the port isolation of the ETHB.