D-Link DES-3226SM Product Manual - Page 19

LED Indicators, Stacking Module LED Indicators

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DES-3226S Layer 2 Fast Ethernet Switch User's Guide LED Indicators The LED indicators of the Switch include Power, Console, and Link/Act. The following shows the LED indicators for the Switch along with an explanation of each indicator. Figure 3 - 12. The LED Indicators • Power This indicator on the front panel should be lit during the Power-On Self Test (POST). It will light green approximately 2 seconds after the Switch is powered on to indicate the ready state of the device. • Console This indicator is lit green when the Switch is being managed via out-of-band/local console management through the RS-232 console port using a straight-through serial cable. • Act/Link/Speed These indicators are located to the left and right of each port. The right side indicator will light when the port has a link of 100 Mbps; the Link indicator will not light for 10 Mbps links. The LEDs blink whenever there is reception or transmission (i.e. Activity--Act) of data occurring at a port. Stacking Module LED Indicators The Switch's current order in the Switch stack is also displayed on the Stacking Module's front panel − under the STACK NO. heading: Figure 3 - 13. Stacking Module LED Indicators The Link and Act LEDs have the same function as the corresponding LEDs for the Switch's Ethernet ports. The Link LED lights to confirm a valid link, while the ACT LED blinks to indicate activity on the link. The Stack No. seven-segment LED displays the unit number assigned to the Switch. The numeral 1 in the display indicates that the stacking module is in the process of determining the stack status and has not yet resolved the Switch's unit number. If the master Switch fails, a new master Switch should be configured for the stack until the failure can be fixed. Any time the composition of a stacked Switch group changes, all Switches in the stack will reboot automatically and the master-slave relationship and stack number will be renegotiated. A link failure will require reconnecting the stacking ports to work around the failed link. 16

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DES-3226S Layer 2 Fast Ethernet Switch User’s Guide
16
LED Indicators
The LED indicators of the Switch include Power, Console, and Link/Act. The following shows the LED indicators for the
Switch along with an explanation of each indicator.
Figure 3 - 12.
The LED Indicators
•
Power
This indicator on the front panel should be lit during the Power-On Self Test (POST). It will light green
approximately 2 seconds after the Switch is powered on to indicate the ready state of the device.
•
Console
This indicator is lit green when the Switch is being managed via out-of-band/local console management
through the RS-232 console port using a straight-through serial cable.
•
Act/Link/Speed
These indicators are located to the left and right of each port.
The right side indicator will light
when the port has a link of 100 Mbps; the Link indicator will not light for 10 Mbps links. The LEDs blink whenever
there is reception or transmission (i.e. Activity--Act) of data occurring at a port.
Stacking Module LED Indicators
The Switch’s current order in the Switch stack is also displayed on the Stacking Module’s front panel
−
under the
STACK
NO.
heading:
Figure 3 - 13.
Stacking Module LED Indicators
The
Link
and
Act
LEDs have the same function as the corresponding LEDs for the Switch’s Ethernet ports.
The
Link
LED
lights to confirm a valid link, while the
ACT
LED blinks to indicate activity on the link.
The
Stack No.
seven-segment LED displays the unit number assigned to the Switch.
The numeral
1
in the display indicates
that the stacking module is in the process of determining the stack status and has not yet resolved the Switch’s unit number.
If the master Switch fails, a new master Switch should be configured for the stack until the failure can be fixed. Any time the
composition of a stacked Switch group changes, all Switches in the stack will reboot automatically and the master-slave
relationship and stack number will be renegotiated. A link failure will require reconnecting the stacking ports to work around
the failed link.