LED patterns
The following table lists the port-side LEDs and the meaning of LED operation.
NOTE
For ports congured for FlexPort operation, LED patterns indicate operational status of GbE or Fibre Channel ports, depending
on type of transceiver installed and FlexPort conguration of port.
TABLE 3 Port side LED patterns during normal operation
LED name LED color Status of hardware Recommended action
System power (one LED [green]) O (no light) System is o or there is an internal
power supply failure.
Voltage may be dropping below
specication.
Verify the system is powered on,
the power cables are attached, and
your power source is live.
Contact your service provider.
Steady green System is on and power supplies
are functioning properly.
No action required.
System status (one bicolor LED
[green and amber])
O (no light) System is o or there is no power. Verify the system is on.
Steady green System is on and functioning
properly.
No action required.
Blinking amber/green Attention. Most likely a power supply or fan
assembly has faulted. Verify the
status and check all messages.
Steady amber (for more than 5
seconds)
A system fault has occurred or the
device is in an initialization state.
Check the management interface
and the error log for details on the
cause of the status.
Contact your service provider.
Ethernet Link (Management port)
(one LED [green])
O (no light) There is no link. No action required.
Steady green Link is present. No action required.
Ethernet Activity (Management
port) (one LED [green])
O (no light) There is no activity. No action required.
Blinking green There is activity (trac). No action required.
VDX 6740 Ethernet ports
All user ports. O (no light) Port is in no shut state and no cable
or transceiver present, no link, 40
GbE port in SFP breakout mode
(also referred to as 4x10 GbE
breakout mode) has no cable, or
license is not available for the port.
Insert SFP+ or QSFP with cable
connected to another port in no
shut state or connect cable to 40
GbE port.
Steady amber Protocol down or no sync or 40
GbE port in 40G mode has no
cable.
Check the local port SFP+ or QSFP
or peer port SFP+ or QSFP and
cable.
Slow blinking amber Port is shut or chassis disabled or
POST failed.
Enable the port.
Fast blinking amber Port is faulted, goes into shut state. Check messages for fault reason
and take necessary action.
Steady green Link is present, no activity. No action required.
Slow blinking green Port is good except ISL is
segmented.
No action required.
Fast blinking green Beaconing enabled. No action required.
Flickering green Online, frames owing through the
port.
No action required.
VDX 6740T and VDX 6740 Ethernet ports
LED activity interpretation
ExtremeSwitching VDX 6740 Hardware Installation Guide
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