A method for realizing link state information diffusion in optical network

The invention relates to an optical network diffusion link state information realizing method. The method comprising: aFirst; each link protection attribute clapboard information for determining traffic engineering TE a ring; and each two link protection attribute clapboard information bearing Is Zi of the link including a respectively; TLVWires; and TLV traffic engineering ring TLV and discharge engineering link state of the bearing (LSA TE) from dispersing the optical network. The invention can defines a TLV filled with multiple types of protecting type and link state information of bearing Is Zi of a building TE ring comprises a diffusion. Therefore, realization of the invention, a support TE ring configuring or more of the types of an optical fibre communication. From with the optical network is allocated diffusion the link state information (i.e. the building TE LSA quantity) speed status, wherein of reduced in a network Port Fan quantity data, improving performance network.