Appendix B: MDA-a and MDA-aXP Card Descriptions
7750 SR-a4 and SR-a8 Installation Guide 165
Table 83: 20-port 10/100/1000 TX RJ-45 MDA-a LEDs
Label 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 Activity LED
(right side)
Green (solid): No errored packets have been detected since the last poll.
Amber (blink): Errored packets have been detected since the last poll.
Unlit: The port is down, or the port is operational but not carrying traffic.
Link LED
(left side)
Green (solid): Valid communications link established. Port speed is running
at 1000BASE-T.
Green (fast blink): Valid communications link established. Port speed is
running at 100BASE-T.
Green (slow blink): Valid communications link established. Port speed is
running at 10BASE-T.
Amber (fast blink): Port loopback
Amber (solid): The link is down or signal is lost.
Unlit: The port is shut down.
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