Chapter 1: Overview
Gigabit Ethernet Switch
SFP
1516
15
16 | CLASS 1 |
LASER PRODUCT |
L/A 
LINK / 
ACT
Speed and
Link/Activity
SFP LEDs
Figure 12. AT-x210-16GT SFP Status LEDs
The AT-x210-24GT SFP LEDs can be found on between the upper and lower SFP slots. See Figure 13.
Gigabit Ethernet Switch
15
L/A | LINK / | ACT |
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|
16 | 15 | 16 | 23 | 24 |
23 |
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24 |
|
|
| CLASS 1 |
|
|
| LASER PRODUCT |
SFP 
Speed and
Link/Activity
SFP LEDs
Figure 13. AT-x210-24GT SFP Status LEDs
Table 6 describes the Link/Activity LEDs for the SFP slots.
Table 6. SFP Link/Activity LED Functional Descriptions
LED | State | Description |
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SFP | Off | The port on the SFP transceiver has not |
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| established a link with an end node or the |
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| transceiver slot is empty, or the ecofriendly |
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| feature is enabled with the MODE LED |
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| button to turn off the front panel LEDs. |
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| Use the MODE LED button to turn off the |
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| front panel LEDs and conserve electricity |
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| when you are not monitoring the switch. |
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| Blinking | The SFP transceiver is transmitting or |
| Green | receiving network packets (Activity). |
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| Steady | The SFP transceiver has established a link |
| Green | with a network device, but is not transmitting |
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| or receiving network packets (Link). |
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18