OLP configuration method selection

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1. Multiplexed signals enter the working and protection routes after being separated on the OLP board at the rear of the FIU board. This type of OLP protection is applicable to the scenarios where the optical cable of the working route is consistent with that of the protection route, and the line distance and attenuation are almost the same (which is called uniform route).
Configuration principles:
a. If multi-section protection is configured on lines, and the duration of each protection switching caused by a fiber cut must be shorter than 50 ms, verify that the residual dispersion in the system in different active and standby fiber combination scenarios meets the dispersion window requirements. For example, for the network shown in Figure 1, the following scenarios need to be verified: active 1 + active 2 + active 3, standby 1 + standby 2 + standby 3, active 1 + active 2 + standby 3, active 1 + standby

Other related questions:
How to select antennas for APs
Antennas receive and send radio signals. Select antennas for APS by referring to HUAWEI Access Points Antenna Quick Start. Contact Huawei local offices to purchase antennas. Antennas from other vendors are not recommended for working with Huawei APs. Consider the following points when selecting antennas: 1. Usage scenario and purpose Indoor antennas are generally used to provide signal coverage in indoor scenarios while outdoor antennas are used to provide signal coverage and bridging backhaul in outdoor scenarios. 2. Local standards and regulations The transmit power and maximum gain of antennas must strictly comply with local standards and regulations. 3. Shape and distance of the coverage or backhaul area - Coverage: Directional antennas are recommended in long and narrow areas while omnidirectional antennas are recommended in round and square areas. - Backhaul: Directional antennas are usually used. If the backhaul distance is long, use high-gain antennas; if backhaul targets are concentrated, use small-angle antennas. 4. Signal transmission band (2.4 GHz/5 GHz) - Coverage: To provide 2.4 GHz and 5 GHz signal coverage, use 2.4Gand 5G antennas in the same area or use dual-band antennas. - Backhaul: Only 5 GHz antennas are used for backhaul.

Whether the working and protection channels must be fixed when the OLP board is used to configure OLP protection
When the OLP board is used to configure OLP protection, the working channel must be the optical port 1 (RI1/TO1) of the OLP board and the protection channel must be set to optical port 2 (RI2/TO2). Otherwise, the OLP protection group cannot work normally.

Whether OLP boards can be used in electrical-layer ASON
Huawei OTN ASON solution can be implemented in two ways: optical-layer ASON (OTN_O) and electrical-layer ASON (OTN_E). Optical-layer ASON achieves service grooming at the OCh wavelength level, while electrical-layer ASON achieves service grooming at the ODUk sub-wavelength level.

Method used to query the working status of an OLP protection group on the OSN 8800
On the U2000, select an NE. In the NE Explorer, choose Configuration > Port Protection from the navigation tree. Query the values of Working Channel Status and Protection Channel Status.

Selecting strip sizes for OceanStor 9000
To improve disk utilization, you are advised to set a strip size value for a directory based on the average file size in the directory. - If the average file size is equal to or smaller than 64 KB, set the strip size to 16 KB. - If the average file size is larger than 64 KB and equal to or smaller than 256 KB, set the strip size to 32 KB. - If the average file size is larger than 256 KB and equal to or smaller than 2048 KB, set the strip size to 128 KB. - If the average file size is larger than 2048 KB and equal to or smaller than 4096 KB, set the strip size to 256 KB. - If the average file size is larger than 4096 KB, set the strip size to 512 KB.

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