Cisco Systems DSC9148D8G48PK9 manual Beacon LEDs, Speed LEDs, Bit Error Thresholds

Chapter 2 Configuring Interfaces

Information About Interfaces

You can set the frame format to EISL for all frames transmitted by the interface in SD port mode. If you sent the frame encapsulation to EISL, all outgoing frames are transmitted in the EISL frame format, regardless of the SPAN sources. See the Cisco MDS 9000 Family NX-OS System Management Configuration Guide.

Beacon LEDs

Figure 2-2displays the status, link, and speed LEDs in a 16-port switching module.

Figure 2-2		Cisco MDS 9000 Family Switch Interface Modes
		2
				77686
	1	3		4
1	Status LED1		3	Link LEDs1 and speed LEDs2
2	1/2-Gbps Fibre Channel port group3		4	Asset tag4

1.See the Cisco MDS 9000 Family NX-OS Fundamentals Configuration Guide.

2.See the “Speed LEDs” section on page 2-11.

3.See the “Generation 1 Interface Configuration Guidelines” section on page 2-18.

4.Refer to the Cisco MDS 9000 Family hardware installation guide for your platform.

Speed LEDs

Each port has one link LED on the left and one speed LED on the right.

The speed LED displays the speed of the port interface:

•Off—The interface attached to that port is functioning at 1000 Mbps.

•On (solid green)—The interface attached to that port is functioning at 2000 Mbps (for 2 Gbps interfaces).

The speed LED also displays if the beacon mode is enabled or disabled:

•Off or solid green—Beacon mode is disabled.

•Flashing green—The beacon mode is enabled. The LED flashes at one-second intervals.

Note Generation 2, Generation 3, and Generation 4 modules and fabric switches do not have speed LEDs.

Bit Error Thresholds

The bit error rate threshold is used by the switch to detect an increased error rate before performance degradation seriously affects traffic.

	Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
OL-29284-01, Release 6.x		2-11