LEDs for the Stacking Slots
Table 3. SFP+ Slot LEDs
LED | State | Description |
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|
|
|
|
|
Link/Activity | Off | The slot is empty, the SFP or SFP+ |
|
| transceiver has not established a link to a |
|
| network device, or the LEDs are turned |
|
| off. To turn on the LEDs, use the eco- |
|
| friendly button. |
|
|
|
| Solid green | The SFP or SFP+ transceiver has |
|
| established a link at 1000 Mbps or 10 |
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| Gbps to a network device. |
|
|
|
| Flashing | The SFP+ transceiver is receiving or |
| green | transmitting packets to a network device |
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| at 10 Gbps. (The LED does not flash for |
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| activity at 1000 Mbps.). |
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|
|
SFP+ slots 51 and 52 may be used as stacking slots to build a VCStack of up to four switches. For background information, refer to Chapter 2, “Virtual Chassis Stacking” on page 35. Table 4 defines the LED states when the slots contain stacking transceivers.
Table 4. Stacking Slot LEDs
LED | State | Description |
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|
|
|
|
|
Link/Activity | Off | The slot is empty, the stacking transceiver |
|
| has not established a link to a network |
|
| device, or the LEDs are turned off. To turn |
|
| on the LEDs, use the |
|
|
|
| Solid green | The stacking transceiver has established |
|
| a link at 10 Gbps to another switch in the |
|
| stack. |
|
|
|
| Flashing | The stacking transceiver is receiving or |
| green | transmitting packets. |
|
|
|
Switch ID LED The Switch ID LED, shown in Figure 6 on page 28, displays the ID number of the switch. A
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