LED Control
LED Control
1. Function Overview
This product includes the following LEDs and button on the main unit.
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LED and button types
LED type Description POWER LED
Indicates the power supply status.
microSD LED
Indicates the microSD card connection and usage status.
Port LED
Indicate the LAN/SFP cable connection and usage status.
MODE button
Switches the LED mode.
Stack ID display LED (7SEG LED)
Displays the stack number. Only installed in the SWX2310P-28GT.
The layout of the LEDs and button is shown below.
2. Definition of Terms Used
Legend of port LED illumination
Port LED illumination mentioned in subsequent explanations are illustrated below.
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Legend of port LED illumination
3. Function Details
3.1. POWER LED
The POWER LED lamp indicates the product power supply status.
The power supply status indicated by each POWER LED illumination mode is described below.
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Power supply status indicated by each POWER LED illumination mode
POWER LED illumination mode Status Unlit
Power is off.
Flashing green
Power is on and system is starting up.
Steady green
Power is on and system is operating normally.
Steady orange
Power is on and an error has occurred in the system.
When the following errors are detected, the POWER indicator illuminates steady orange.
Check the error that was detected and take the appropriate actions.
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Fan stopped
The fan that exhausts heat generated by the product has stopped.
Immediately stop using the product and be sure to contact the dealer for inspection or service. -
Temperature error inside the product
The temperature inside the product is abnormal.
Review the ambient conditions where installed and install the product correctly so that internal temperature is appropriate.
You can use the show environment command to check temperature and fan errors.
3.2. SD LED
The SD LED lamp indicates the microSD card connection and usage status.
The connection status indicated by each SD LED illumination mode is described below.
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Connection status indicated by each SD LED illumination mode
SD LED illumination mode Status Unlit
Not available, because a microSD card is not inserted or unmounted.
Flashing green
The microSD card is being accessed.
Steady green
A microSD card is inserted and available for use.
Do not remove the microSD card while flashing green, because the microSD card is being accessed.
3.3. Port LED
3.3.1. Indicator modes and switching between them
This product offers the following five display modes.
Mode name | MODE LED illumination status | Function Overview |
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LINK/ACT mode |
The left LED of LAN/SFP ports indicates the link status and the right LED indicates the connection speed. |
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PoE mode |
Indicates the power supply status of the PoE power supply port. |
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VLAN mode |
Indicates the VLAN IDs set for the LAN/SFP ports. |
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STATUS mode |
Displays the error status of the LAN/SFP ports. |
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OFF mode |
Switches off LAN/SFP port LEDs to minimize power consumption. |
The display mode can be switched using the MODE button.
The flowchart below shows how to switch the indicator mode.
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Switching the indicator mode (when the default LED mode is the LINK/ACT mode)
The display mode after system startup and the display mode after error is resolved depend on the default LED mode setting.
If an error is detected by the following functions, the port LEDs automatically switch to the STATUS mode.
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Loop detection
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SFP optical reception level monitoring
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PoE supply
Even if you press the MODE button when an error is detected, the product will remain in the STATUS mode. (No further action will be accepted until all errors have been resolved.)
When you press and hold the MODE button for three seconds in this status, all error conditions are reset and the LEDs switch to the indications according to the default LED mode settings.
(For details, refer to LED indications in STATUS mode.)
3.3.2. LED indications in LINK/ACT mode
In the LINK/ACT mode, port LEDs are illuminated as shown below.
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LAN/SFP port link status
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LAN/SFP port connection speed
The link status LED indications are shown below.
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LAN/SFP port link status LED indications
While link is down While link is up While forwarding data LAN port
(Off)
(Steady green)
(Flashing green)SFP port
(Off)
(Steady green)
(Flashing green)
The connection speed LED indications are shown below.
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Connection speed LED indications for LAN/SFP ports
10M Link 100M Link 1000M Link 10000M Link LAN port
(Off)
(Steady orange)
(Steady green)(None)
SFP port
(None)
(None)
(Steady green)
(Steady green)
3.3.3. LED indications in PoE mode
In the PoE mode, the power supply status is indicated on the port LED of the port capable of PoE supply (hereinafter referred to as PoE port).
In the stack configuration, the display mode cannot be changed to the PoE mode.
The power supply ports for each model are as follows.
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Power supply port by model
Model name |
Power supply port |
SWX2310P-10G |
Ports #1 to #8 |
SWX2310P-18G |
Ports #1 to #16 |
SWX2310P-28GT |
Ports #1 to #24 |
The LED indications in the PoE mode are shown below.
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Power supply port LED indications
No power supply Power is being supplied LAN port
(Off)
(Steady green)
3.3.4. LED indications in VLAN mode
In the VLAN mode, the port LEDs indicate the VLAN association status.
In the stack configuration, the display mode cannot be changed to the VLAN mode.
The port LED illumination statuses are shown below.
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Port LED illumination statuses in VLAN mode
LAN/SFP port VLAN association status Port LED illumination status The port is not associated with any VLAN
(Off)The port is associated with one VLAN
The six lowest VLAN IDs are indicated in specific illumination patterns.
All VLAN IDs from the 7th lowest one are indicated in an identical illumination pattern.The port is associated with multiple VLANs
(The port LEDs on the left and right are lit in steady orange) -
The default VLAN (VLAN #1) is excluded from the subject of indication. It is not counted as an associated VLAN.
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The VLAN association status does not depend on the link status of each LAN/SFP port. Ports in the link-down status are also included in the subject of indication.
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VLAN IDs in the subject of indication are only those with associated LAN/SFP ports.
Those for which only the VLAN IDs are defined (without associated LAN/SFP ports) are excluded from the subject of indication.
3.3.5. LED indications in STATUS mode
In STATUS mode, the port LEDs indicate the status of errors generated by the following product functions.
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Loop detection
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SFP optical reception level monitoring
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PoE supply
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Port LED indications in error status
Normal state Loop detection or
SFP optical Rx level abnormalityPD error PoE system limit PoE port limit LAN port
(Off)
(Left LED flashing orange)
(Left LED steady orange)
(Right LED flashing orange)
(Right LED steady orange)SFP port
(Off)
(Left LED flashing orange)(None)
(None)
(None)
When the product detects an error, it overrides the current mode and switches to STATUS mode.
The following conditions trigger an error in respective functions.
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Loop detection
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Loop was detected, so port was blocked
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Loop was detected, so port was shut down
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SFP optical reception level monitoring
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SFP optical reception level fell below the normal range
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SFP optical reception level exceeded the normal range
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PoE supply
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Power supply stopped because the port limit (maximum power supply per port) exceeded
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Power supply to low priority ports stopped because the system limit (maximum power supply of the entire system) exceeded
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A PD error was detected
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The cause of the error can be checked using the show error port-led command.
During active errors in the STATUS mode, LEDs will automatically switch to the default LED mode in the following states.
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All of the following errors were resolved.
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Blocked status due to loop detection is resolved.
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Shutdown status due to loop detection is resolved.
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The monitoring time elapsed after the shutdown due to loop detection.
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The unit linked up after the no shutdown command was executed during shutdown due to loop detection.
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SFP optical reception level recovered.
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The PoE port error was resolved.
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Press and hold the MODE button (for three seconds) to forcibly reset (clear) the error status.
3.3.6. LED indication for OFF mode
If the default LED mode is the OFF mode, the port LEDs remain off regardless of the link status.
Even if the default LED mode is OFF, if an error occurs then the mode automatically switches to the STATUS mode and displays the error status.
3.3.7. Changing the LED mode after system startup
This product enables the LED mode after system startup (the default LED mode) to be changed.
The initial default LED mode is set to LINK/ACT mode, but it can be changed using the led-mode default command.
However, the LED mode cannot be changed in the stack configuration.
You can check the default LED mode and the currently displayed LED mode using the show led-mode command.
If an active error is resolved in the STATUS mode, the mode is switched back to the default LED mode.
3.3.8. Other port LED indications
Regardless of the LED mode status, all port LEDs will illuminate as indicated below during startup initialization and firmware updates.
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Other port LED indications
Updating firmware Initializing LAN port
(Flashing green)
(Off)SFP port
(Flashing green)
(Steady orange)
3.4. Stack ID display LED
The stack ID display LED (7SEG LED) installed on the SWX2310P-28GT displays the stack ID in the stack configuration after the startup countdown is displayed.
If a stack is not configured, the number ‘1’ is displayed.
If an error occurs while a stack is configured, the letter ’E’ is displayed to indicate the error.
If the default LED mode is the OFF mode, the stack ID display LED is also switched off.
4. Related Commands
Related commands are indicated below.
For details on the commands, refer to the Command Reference.
Operations | Operating commands |
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Show LAN/SFP port status |
show interface |
Show loop detection setting status |
show loop-detect |
Show VLAN information |
show vlan brief |
Set default LED mode |
led-mode default |
Show LED mode |
show led-mode |
Show port error status |
show error port-led |
5. Examples of Command Execution
5.1. Checking LAN/SFP port status
Use the show interface command to check the LAN/SFP port status.
Yamaha#show interface show interface Interface port1.1 Link is UP Hardware is Ethernet HW addr: ac44.f23d.0b2c ifIndex 5001, MRU 1522 Speed-Duplex: auto(configured), 1000-full(current) Auto MDI/MDIX: on Vlan info : Switchport mode : access Ingress filter : enable Acceptable frame types : all Default Vlan : 1 Configured Vlans : 1 Interface counter: input packets : 317111 bytes : 31387581 multicast packets: 317074 output packets : 162694 bytes : 220469213 multicast packets: 162310 broadcast packets: 149 drop packets : 0 : (Shows information for all LAN ports)
5.2. Checking LAN/SFP port loop detection status
Check the LAN/SFP port loop detection status.
Yamaha#show loop-detect loop-detect: Enable loop-detect: Enable port loop-detect port-blocking status ------------------------------------------------------- port1.1 enable enable Normal port1.2 enable enable Normal port1.3 enable enable Normal port1.4 enable enable Normal port1.5 enable enable Normal port1.6 enable enable Normal port1.7 enable enable Normal port1.8 enable enable Normal port1.9 enable enable Normal port1.10 enable enable Normal ------------------------------------------------------- (*): Indicates that the feature is enabled.
5.3. Set default LED mode
Set the default LED mode to the OFF mode.
Yamaha#configure terminal Yamaha(config)#led-mode default off (1) Yamaha(config)#exit Yamaha#show led-mode (2) default mode : off current mode : off
1 | Set default LED mode |
2 | Show LED mode |