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

Abstract

The invention discloses a method and device for enabling switching of port ID encryption and decryption in an optical network transmission system. The method of the invention includes: the central office equipment OLT obtains the port ID encryption and decryption supported by the ONU through negotiation with the user equipment ONU Enable switching mode; after the OLT obtains the port ID encryption and decryption enabled switching mode supported by the ONU, it sends an activation request to the ONU to make the ONU adjust its port ID encryption and decryption enabling switching mode to synchronous encryption and decryption Enable switching mode; in the synchronous encryption and decryption enabling switching mode, the OLT and the ONU determine the switching time for simultaneous encryption and decryption port ID enabling switching, so as to complete the encryption and decryption port ID enabling switching at the switching time. The invention solves the technical problem of packet loss 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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