The following sections describe the meanings of the LEDs on Summit X440 switches.
Front Panel
| Label or Type | Color/State | Meaning |
|---|---|---|
| MGT (Management) | Fast blinking green (2 Hz) | Power-on self test (POST) in progress. |
| Steady green | POST passed. System is booting image. | |
| Slow blinking green (1 Hz) | Normal operation | |
| Blinking amber |
Switch diagnostics are running. or System is disabled. Post failed or system overheated. |
|
| Off | No external power is attached. | |
| FAN | Steady green | Normal operation, fan is good.
Note: For the following Summit models, fan
light is “ON” only when the fan is running:
|
| Blinking amber | Fan failure. Switch will continue to operate unless it overheats. | |
| Off | No power Note: For the following Summit models, fan light
“OFF” indicates either no power to the fan or temperature is
below threshold where fans are needed:
|
|
| PSU-I (Internal power supply) |
Steady green | Normal operation. |
| Steady amber | Power is attached, but no power is on. | |
| Blinking amber | Power failure. | |
| Off | No power is attached. | |
| PSU-E (External power supply) |
Steady green | Normal operation. |
| Steady amber | Power is attached, but no power is on. | |
| Blinking amber | Power failure. | |
| Off | No external power attached. | |
|
Port number 1 – 8 or 1 – 24 or 1 – 48 |
Steady green | Link is OK. |
| Blinking green | Port is transmitting packets. | |
| Off | Link is not present, or port is disabled. | |
|
Port number 21 – 24 or 45 – 48 (Shared ports) |
Steady green | Link is OK. |
| Blinking green | Port is transmitting packets. | |
| Off | Link is not present, or port is disabled. | |
|
Port number 25 – 26 or 49 – 50 (10G ports) |
Steady green | Link is OK. |
| Blinking green | Port is transmitting packets. | |
| Off | Link is not present, or port is disabled. | |
|
Stack 1, Stack 2 NOTE: The X440-L2-24t and X440-L2-48t do not have stacking capability; the stacking LEDs do not function. |
Steady green | Link OK on the indicated stacking port. |
| Blinking green | Activity on the indicated stacking port. | |
|
Stack Number Indicator NOTE: The X440-L2-24t and X440-L2-48t do not have stacking capability; the stacking LEDs do not function. |
Top half of the stack number blinking | The switch is designated as master in the stack. |
| Bottom half of the stack number blinking | The switch is designated as backup in the stack. | |
| Stack number steady | This switch is a standby switch (neither the master nor the backup) in the stack. | |
| Off | The stackable switch is not in stacking mode. |
Additional Port LED Meanings for PoE Switches: Summit X440-8p, X440-24p, X440-24p-10G, X440-48p, and X440-48p-10G
| Label or Type | Color/State | Meaning |
|---|---|---|
| All front-panel ports | Steady green | Link OK; port is not powered. |
| Steady amber | Link is OK; port is powered; no traffic. | |
| Blinking green | Link is OK and transmitting packets; port is not powered. | |
| Blinking amber | Link is OK and transmitting packets; port is powered. | |
| Slow blinking amber | No link, or disabled port; port is powered. | |
| Alternating amber and green | Port has a power fault. | |
| Off | Port is not powered, has no link, or is disabled. |
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