Front Panel Connectors and LEDs

The front panel contains dual ports with two status LEDs assigned to each port. In addition, there is an Attention button (labeled ATTN) and two system-level LEDs located next to the ATTN button

Figure 2 Front Face of the EM

image:Illustration of the connectors and LEDs on the front panel.

Figure Legend

1 Port 0

2 Port 1

3 ATTN (attention) button

4 OK LED

5 Attention (fault) LED

6 Speed LED

7 LNK/ACT (link/activity)

The following table explains the behavior of the speed and activity/link LEDs.

LED	Color	State	Meaning
Speed	None	Off	Link is down.
	Amber	Steady on	Link is established at 1Gbps.
	Green	Steady on	Link is established at 10Gbps.
Link/Activity	None	Off	Link is down.
	Green	Blinking	Activity is occurring on the link.
	Green	Steady on	Link is established.

When you want to perform a hot-plug operation with an EM, press the ATTN button. This removes power from the slot so that the EM can be removed while the chassis remains powered up.

Note - Power remains present at the slot for a period of time after the ATTN button is pressed. This is referred to as the power transition period.

Caution - Do not insert or remove the EM during the power transition phase of a hot-plug operation. This power transition phase is the period just after the ATTN button is pressed when the EM may not be fully isolated from the power source.

In addition to the port status LEDs, there are two LEDs next to the ATTN button. The following table explains their meaning.

LED	Color	State	Meaning	Allowed Action
OK (power status)	None	Off	Power is removed from the slot.	EM can be removed from the slot.
	Green	Blinking	Power transition/hot-plug operation is in progress.	EM cannot be removed.
	Green	Steady on	Power is present in the slot.	EM cannot be removed.
Attention status	None	Off	Slot is operational.	This is the normal status when the slot is operating correctly.
	Amber	Blinking	EM is being located.	Note - The Attention LED is not used to report problems detected while validating a request for a hot-plug operation.
	Amber	Steady on	Slot needs attention.	The slot has an operational problem.

User’s Guide

Front Panel Connectors and LEDs

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