About Beacon Mode; Configuring Beacon Mode - Cisco MDS 9000 Series Configuration Manual

Chapter 2 Configuring Interfaces
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
2. See the
3. See the
4. Refer to the Cisco MDS 9000 Family hardware installation guide for your platform.
About 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:
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•
The speed LED also displays if the beacon mode is enabled or disabled:
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•
Generation 2 and Generation 3 modules and fabric switches do not have speed LEDs.
Note

About Beacon Mode

By default, the beacon mode is disabled on all switches. The beacon mode is indicated by a flashing
green light that helps you identify the physical location of the specified interface.
Configuring the beacon mode has no effect on the operation of the interface.

Configuring Beacon Mode

To enable beacon mode for a specified interface or range of interfaces, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# interface fc1/1
switch(config-if)#
Step 3
switch(config-if)# switchport beacon
switch(config-if)# no switchport beacon
The flashing green light turns on automatically when an external loopback is detected that causes the
Note
interfaces to be isolated. The flashing green light overrides the beacon mode configuration. The state of
the LED is restored to reflect the beacon mode configuration after the external loopback is removed.
OL-19445-02, Cisco MDS NX-OS Release 4.2(x)
"About Speed LEDs" section on page
"Generation 1 Interfaces Configuration Guidelines" section on page
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).
Off or solid green—Beacon mode is disabled.
Flashing green—The beacon mode is enabled. The LED flashes at one-second intervals.
2-17.
2-2.
Purpose
Enters configuration mode.
Selects a Fibre Channel interface and enters
interface configuration submode.
Enables the beacon mode for the interface.
Disables the beacon mode for the interface.
Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
Fibre Channel Interfaces
2-17