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Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
OL-29284-01, Release 6.x
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 2-2 displays the status, link, and speed LEDs in a 16-port switching module.
Figure 2-2 Cisco MDS 9000 Family Switch Interface Modes
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.
1 Status LED
1
1. See the Cisco MDS 9000 Family NX-OS Fundamentals Configuration Guide.
3 Link LEDs
1
and speed LEDs
2
2. See the “Speed LEDs” section on page 2-11.
2 1/2-Gbps Fibre Channel port group
3
3. See the “Generation 1 Interface Configuration Guidelines” section on page 2-18.
4 Asset tag
4
4. Refer to the Cisco MDS 9000 Family hardware installation guide for your platform.
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