Handling of the problem that the state of optical interfaces of an AR router is not Up

The handling roadmap of the problem that the state of optical interfaces of an AR router is not Up is as follows:

1. The negotiation methods, rates, and duplex modes of both ends must be the same.
2. Check whether the optical fiber and optical module are matched and used correctly.
- Multimode optical fibers can be used with single-mode optical modules in short distance scenarios.
- Single-mode optical fibers can be used only with single-mode optical modules.
- Check whether the optical interface and optical module are incorrectly matched. For example, a 100M optical interface is connected to a 1000M optical module.
- Check whether the optical modules are authorized by Huawei.
- Generally, single-mode optical fibers are yellow and multimode optical fibers are orange.
3. Run the display transceiver interface interface-type interface-number command to check whether the wavelength of the optical module to be interconnected is in accordance with that of the optical interface and whether the distance is proper.
4. Run the display transceiver interface interface-type interface-number verbose command to check whether the transmit and receive optical power of the optical interface is normal.
5. If the cause of the problem cannot be determined, consider to replace the optical module and optical fiber.

For the problem that the state of an optical interface of an AR router is not Up, see the troubleshooting guide. For details, access the URL in the right column.

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