Juniper PTX5000 Hardware Manual page 505

• Connect an Ethernet cable to the HOST/ETHERNET port on the Control Board. If the host
subsystem is operational, the ACT port LED is lit to indicate Ethernet activity. If you can run the
CLI from a management device attached to the Control Board, the Control Board is installed
correctly.
• Verify that the green OK LED on the Control Board faceplate is lit steadily green. The green OK
LED should light steadily a few minutes after the Control Board is installed.
• Verify that the FAIL on the Control Board faceplate is not lit. If the FAIL LED is lit steadily, remove
and install the Control Board again. If the FAIL LED still lights steadily, the Control Board is not
functioning properly. Contact your customer support representative.
• To verify that the Control Board is Online, use the show chassis environment cb command.
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