Huawei H31-341_V2.5 - HCIP-Transmission V2.5

In 1+1 optical line protection configurations, either the RI1/TO1 path or the RI2/TO2 path can be designated as the working channel.

The TNG2WSMD09 board is a 9-port wavelength selective multiplexer/demultiplexer for the Super C band and supports optical power adjustment and online optical power detection.

An IP subnet mask of 27 bits means 32 - 27 = 5 bits are left for host addresses. The number of hosts per subnet is 2^5 - 2 = 30. The subtraction of 2 accounts for the network address and broadcast address, which cannot be assigned to hosts. This calculation is fundamental in IP subnetting and is widely used in network design to allocate IP address ranges efficiently. HCIP-Transmission materials include these principles as part of the networking fundamentals necessary for transmission network engineers.

PMD (Polarization Mode Dispersion) and CD (Chromatic Dispersion) are linear effects related to signal distortion caused by fiber properties. Non-linear effects like FWM (Four-Wave Mixing) and SRS (Stimulated Raman Scattering) arise from the interaction of high optical power with the fiber medium.

The loopback method can substitute or bypass components such as fibers, boards, adapters, attenuators, or power supplies to isolate and verify signal paths during troubleshooting.

R_LOS, R_LOF, R_OOF, and MUT_LOS all indicate loss of signal or framing, which directly interrupts service delivery.

Deleting a path at the NE or network layer on the NMS does not itself interrupt service; the NMS operation is purely administrative and does not tear down traffic forwarding.

The statement that the OA gain can be reduced when expanding 100G channels in a 10G system to meet incident optical power requirements is false. In fact, the single wavelength incident optical power of a 100G system is higher than that of a 10G system, and gain adjustment needs to ensure the 100G channels meet their power requirements without degradation. Reducing OA gain indiscriminately could cause insufficient amplification for 100G signals, impairing performance. HCIP-Transmission specifies careful power management and gain setting to balance multi-rate systems during hybrid transmission expansion.

The ODUk SNCP service defines three protection subtypes:

SNC (Subnetwork Connection)

ISNC (Inverse SNC)

SISNC (Simultaneous Inverse SNC)