Negotiation information transmission method and device

Abstract

The embodiment of the invention relates to a negotiation information transmission method and a negotiation information transmission device. The method comprises the following steps of: receiving negotiation information through time slot overheads in a virtual cascade service receiving direction, wherein the time slot overheads in the virtual cascade service receiving direction carry group identification (GID); when at least one of the GIDs is the same as that carried by the time slot overheads in a virtual cascade service sending direction, shielding a time slot carrying at least one GID, wherein all time slot overheads in the virtual cascade service sending direction carry identical GIDs. In the embodiment of the invention, when at least one of the GID carried by the time slot overheads in the virtual cascade service receiving direction is the same as that carried by the time slot overheads in the virtual cascade service sending direction, the time slot corresponding to the at least one GID is shielded, the accurate selection of non-loopback time slot for carrying a service is realized, and the normal carrying service of the non-loopback time slot is guaranteed, so that the phenomenon of service interrupt is avoided.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular to a negotiation information transmission method and device. Background technique [0002] Link Capacity Adjustment Schemes (LCAS for short) provides an adaptation function between the source end and the sink end of a virtual concatenation link, which can be used to adjust (increase or decrease) the synchronous digital hierarchy (Synchronous Digital Hierarchy, SDH for short) ) network / optical transport network (Optical Transport Network, OTN for short) capacity of containers formed by virtual concatenation. For example: when a virtual container (Virtual Container, VC for short) fails, the LCAS can automatically temporarily reduce the capacity, and automatically increase the capacity when the VC fails to recover. LCAS is a two-way handshake protocol. Before any adjustment is made, the source and sink need to exchange information. [0003] In the p...

AI Technical Summary

Problems solved by technology

[0003] In the process of realizing the present invention, the inventor finds that there are at least the following problems in the prior art: if a virtual concatenated business on the transmission equipment line of SDH network / OTN has some time slots (virtual containers), the business is looped back to the business The source end, the source end will receive negotiation information packets in two directions, one includes the negotiation information looped back to the service source end, and the other includes the negotiation information sent by the service sink end

The above two negotiation information packets can be transmitted through the H4 byte of VC3 / VC4 time slot overhead or the K4 byte of VC12 time slot overhead. The service is still carried by the non-loopback time slot, which will probabilistically shield the service of the non-loopback time slot, resulting in the interruption of the service of the non-loopback time slot

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