Dear friend!
NCE detects temporary routes. Generally, temporary routes are added by users using commands. Routes are lost after the system restarts after the upgrade and patch installation. For details, see the following configuration example.
Write the private network route to the /etc/sysconfig/static-routes file and restart the system for the modification to take effect.
For example, the IP address of the private network is 189.**.**.**.
1. Use PuTTY to log in to the EulerOS server in SSH mode.
2. In this directory: vi /etc/sysconfig/static-routes
Edit and write under: any net 189.0.0.0/8 gw 189.**.**.1

or directly deliver: echo "any net 189.0.0.0/8 gw 189.**.**.1" >> /etc/sysconfig/static-routes
3. Query after the configuration is complete.

Please note: The preceding operations have high skill requirements for engineers. To avoid other risks, you are advised to contact local Huawei engineers at the following link: Global Service Hotline.
Thank you!