Enables or disables Digital Diagnostic Monitoring Interface (DDMI).
| port_list | Designates the ports to enable or disable DDMI on. | 
| all | Designates enabling or disabling DDMI on all ports. | 
| ddmi | Designates enabling or disabling DDMI on specified ports. | 
| on | Specifies enabling DDMI on the selected ports (default). | 
| off | Specifies disabling DDMI on the selected ports. | 
By default, DDMI is enabled.
DDMI provides critical system information about the installed optical modules.
The following example disables DDMI on port 1:
# configure ports 1 ddmi off
This command was first available in ExtremeXOS 30.7.
This command is available on all ExtremeSwitching Universal switches.