Appendix B: MDA-a and MDA-aXP Card Descriptions
7750 SR-a4 and SR-a8 Installation Guide 169
Table 87: 44-port 1GigE CSFP/SFP MDA-a LEDs
Label/Part Description LED Display
Pwr / Stat Power and
Status LED
Green (slow blink): The MDA-a is loading the firmware and running
diagnostics.
Green (solid): The MDA-a has successfully completed loading the
firmware and running diagnostics, and is operationally up and
administratively up.
Amber (solid): The MDA-a is operationally down but administratively up.
Unlit: The MDA-a is operationally down and administratively down.
Lnk/Act Link and
Activity LED
Green (solid): Valid communications link established
Green (blink): Port active and receiving or transmitting data
Amber (fast blink): Loopback
Amber (slow blink): Administratively up, but no optic module installed
Amber (solid): Optics installed, but no link present or LOS
Unlit: Laser disabled or port shut down
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