Abstract: This application disclose a slot negotiation method for a fine-grain service in a FlexE. A sending apparatus may send the N requests to a receiving apparatus. The N requests initiates full slots negotiation of the fine-grain service. The N requests carry full sub-slot information of a sub-slot occupied by the fine-grain service, and the full sub-slot information indicates all sub-slots occupied by the fine-grain service. The receiving apparatus and the sending apparatus may perform negotiation based on the N requests and full slots of the fine-grain service. Therefore, fine-grain slots of the sending apparatus and the receiving apparatus are consistent, and a problem of inconsistent fine-grain slots of the sending apparatus and the receiving apparatus that may exist due to use of an incremental negotiation manner is avoided.

Abstract: This application relates to a slot negotiation method and a device. The method includes: A transmitter sends a first FlexE overhead frame to a receiver, to request active/standby calendar switching. When the receiver is in a restart state, the receiver does not respond to the received first FlexE overhead frame. In addition, the RX sends a routine update second FlexE overhead frame to the transmitter. Determining that the second FlexE overhead frame is not a response to the first FlexE overhead frame, the transmitter sends a third FlexE overhead frame to request active/standby calendar switching again. According to the method in this application, incorrect calendar switching on the transmitter side caused by a mistaken response of the receiver can be avoided. This reduces the likelihood of a service interruption caused by the existing slot negotiation mechanism.

Abstract: This application relates to a slot negotiation method and a device. The method includes: A transmitter sends a first FlexE overhead frame to a receiver, to request active/standby calendar switching. When the receiver is in a restart state, the receiver does not respond to the received first FlexE overhead frame. In addition, the RX sends a routine update second FlexE overhead frame to the transmitter. Determining that the second FlexE overhead frame is not a response to the first FlexE overhead frame, the transmitter sends a third FlexE overhead frame to request active/standby calendar switching again. According to the method in this application, incorrect calendar switching on the transmitter side caused by a mistaken response of the receiver can be avoided. This reduces the likelihood of a service interruption caused by the existing slot negotiation mechanism.