Method and device for port ID encryption and decryption enable switching of optical network transmission system

Abstract

The invention discloses a method and a device for port ID encryption and decryption enable switching of an optical network transmission system. The method provided by the invention comprises the following steps: an optical line terminal (OLT) negotiates with an optical network unit (ONU) to acquire a port ID encryption and decryption enable switching mode supported by the ONU; the OLT transmits an activation request to the ONU after obtaining the port ID encryption and decryption enable switching mode supported by the ONU, so that the ONU switches the port ID encryption and decryption enable switching mode to a synchronous encryption and decryption enable switching mode; the OLT and the ONU determines the switching moment for synchronously carrying out encryption and decryption port ID enable switching in the synchronous encryption and decryption enable switching mode so as to synchronously complete encryption and decryption port ID enable switching at the switching moment. The method and the device provided by the invention solve the technical problem of packet loss existing in the prior art.

Description

technical field [0001] The present invention relates to the technical field of GPON MAC system encryption and decryption of an optical network transmission system, in particular to a method and a device for enabling switching of port ID encryption and decryption of an optical network transmission system. Background technique [0002] The GPON (Gigabit Passive Optical Network) system is a kind of optical network transmission system that is widely used at present, and will also be the mainstream optical fiber access solution in the future. The basic form of the topology structure of the GPON system is bus type, that is, one OLT (office end device) is connected to multiple ONUs (user end devices). For a certain user, the data of other users is visible, so encryption must be used Prevent important data from being monitored. [0003] The encryption and decryption of the GPON system has been clearly defined in the GPON standard protocol, and will not be repeated here. [0004] T...

AI Technical Summary

Problems solved by technology

[0011] 1) The OLT first completes the switching of the encryption enablement of a certain Port-ID, and encrypts the sent data, but the ONU has not completed the switching of the decryption enablement of the Port-ID, so the encrypted data is not decrypted, resulting in data transmission errors

[0012] 2) Before the OLT completes the switching of a Port-ID encryption enablement, the ONU has already completed the switching of the Port-ID decryption enablement, so the ONU will decrypt the unencrypted data, resulting in data transmission errors;

[0014] However, case 3) can only occur in a very small probability, so in most cases data transmission will be wrong, that is, there is a technical problem of packet loss

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