Port Creation

After a cold reboot or firmware upgrade, Interface Manager waits for the following events to complete to create ports on the system.

• Chassis Manager to detect and publish the chassis type to operDB.
• Stratum to initiate configuration management and P4 services, reconfigure ports using the chassis config file, and start Stratum gNMI service.

Interface Manager performs the following tasks to create ports:

1. Connects to stratum and creates interfaces based on the chassis type and configuration.
2. Queries user configurations from state DB and pushes them to stratum.
3. Subscribes to operational state updates from stratum for each of the ports.
4. Updates operDB with configuration and state of the ports.