Optix OSN8800 fiber optic transmission equipment for G.652/G.654/G.655 fiber transmission wavelength in the use of no restrictions. For G.653 fiber, 40-wave transmission is achieved using a wavelength range of 196.05 to 194.1 THz. 40-wave systems have a frequency spacing of 100 GHz, and support 2.5 Gbit/s, 10 Gbit/s, and 40 Gbit/s in a single wave. 80-wave systems have a frequency spacing of 50 GHz, and support 10 Gbit/s and 40 Gbit/s in a single wave. s two rates. Sparse wavelength division multiplexing technology CWDM, wavelength spacing of 20nm, a single wave can support 2.5Gbit/s rate. Conforms to G.694.2. DWDM wavelengths are transmitted in the 1531nm to 1551nm window in CWDM to extend the CWDM system capability.

Problem Description

Problem Summary] OSN8800 devices fail to load hotfix version V1R7C00SPH350.

Problem Details】Loading VR7C00SPH350 hotfixes on existing network elements fails several times on one network element.

Processing

Step 1: Analyze the packet loading log of the network element and find that in the distribution phase, the distribution of the patch file to the master board of the slave rack timed out, resulting in the failure of the hot patch loading process.

Step 2: Capture and analyze the master control logs of the slave rack and find that multiple files returned cannot be read. Therefore, it is confirmed that the FLASH failure of the master control of the slave rack leads to the problem of not being able to write normally, which causes the failure of loading hot patches.

Root Cause

The slave rack master FLASH fails, resulting in the inability to write data normally, which makes loading hotfixes fail.

Solution

Replace the faulty master board

The related technical information in this chapter and the troubleshooting process of SDH equipment are collected and organized by Shenzhen Optical Transmission Network Technology Company Limited (www.opticaltrans.com), please retain! Our company specializes in Huawei SDH optical transmission equipment, SDH transmission equipment sales.