Supported protection schemes at the OTN layer of Huawei OTN equipment

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The following protection schemes are supported at the OTN layer of Huawei OTN equipment: client 1+1 protection, intra-board 1+1 protection, OLP, ODUk SNCP, tributary SNCP, and ODUK SPRing.

Other related questions:
Whether OTN equipment supports tangent ring networking
Yes, OTN equipment supports tangent ring networking.

Products included in OTN equipment
Currently, Huawei OTN devices include OSN 1800, OSN 3800, OSN 6800, OSN 8800, and OSN 9800.

Latency measurement supported by some boards on OTN equipment
To support the latency measurement function, the specified NMS license must be available. In addition, not all boards support the online latency measurement function. The following lists R007C02SPC300 boards that support online latency monitoring: 1. 2.5G tributary boards: TN54TOA, TN54THA, and TN54TOG 2. 10G tributary boards: TN57TOA, TN53TQX, TN53TDX, TN55TQX, TN57TQX, TN55TOX, and TN54TTX 3. 10G OTU boards: TN11LOA and TN14LSX 4. 100G tributary boards: TN54TSC

Difference between conventional WDM equipment and OTN equipment
Both of them use the DWDM technology. The difference between them lies in that OTN equipment can achieve electrical cross-connection scheduling for various types of services.

OTN principles
An OTN is a network consisting of optical NEs that are connected through optical fibers. It can transmit, multiplex, route, manage, monitor, and protect client signals on optical channels. A main feature of the OTN is client independence. That is, the transmission and configuration of any digital signals are irrelevant to the features of a client. OTN has the following advantages over traditional SDH: More powerful forward error correction, Tandem connection monitoring (TCM) at more levels, transparent transmission of client signals, and scalable switching capacity.

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