Chapter 3 Hardware Overview
3.3 LEDs
After you connect the power to the Switch, view the LEDs to ensure proper functioning of the Switch and as an aid in troubleshooting.
Table 2 | LED Descriptions |
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LED | COLOR | STATU | DESCRIPTION |
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BPS | Green | On | The backup power supply is connected and active. |
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| Blinking | The system is receiving power from the backup power |
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| supply. |
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| Off | The backup power supply is not ready or not active. |
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PWR | Green | On | The system is turned on. |
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| Off | The system is off. |
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SYS | Green | On | The system is on and functioning properly. |
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| Blinking | The system is rebooting and performing |
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| tests. |
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| Off | The power is off or the system is not ready/malfunctioning. |
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ALM | Red | On | A hardware failure is detected or an alarm from the |
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| external alarm is received. |
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| Off | The system is functioning normally. |
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LNK | Green | On | The link to this port is up. |
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| Off | The link to this port is not connected. |
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ACT | Green | Blinking | This port is receiving or transmitting data. |
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Gigabit Ethernet Ports |
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LNK/ | Green | Blinking | The system is transmitting/receiving to/from an Ethernet |
ACT |
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| network. |
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| On | The link to a 1000 Mbps Ethernet network is up. |
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| Amber | Blinking | The system is transmitting/receiving to/from an Ethernet |
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| network. |
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| On | The link to a 100 Mbps Ethernet network is up. |
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| Off | The link to an Ethernet network is down. |
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FDX | Amber | On | The Gigabit port is negotiating in |
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| Blinking | There is congestion in |
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| Off | The Gigabit port is negotiating in |
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MGMT |
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10 | Green | Blinking | The system is transmitting/receiving to/from an Ethernet |
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| device. |
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| On | The port is connected at 10Mbps. |
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| Off | The port is not connected at 10Mbps or to an Ethernet |
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| device. |
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| 43 |
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