Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?


Maintaining MX2020 Adapter Cards


For optimum router performance, verify the condition of the ADCs. The router can have up to twenty ADCs mounted vertically in the line card cage at the front of the chassis. The MPCs are installed vertically into the ADCs.


On a regular basis:

  • Issue the CLI show chassis adc command to check the status of installed ADCs. As shown in the sample output, the value Online in the column labeled State indicates that the ADC is functioning normally:

For further description of the output from the command, see the Junos OS System Basics and Services Command Reference.