Chapter 1 BayStack 420 Switch 29
Table 2 BayStack 420 Switch LED descriptions
Label | Type | Color | State | Meaning |
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Power | Power status | Green | On | DC power is available to the switch’s internal circuitry. |
On |
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| Off | No AC power to switch or power supply failed. | |
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Cascade | Stack mode |
| Off | The switch is in standalone mode. |
Up |
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| Green | On | The switch is connected to the upstream unit’. |
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Cascade | Stack mode |
| Off | The switch is in standalone mode. |
Down |
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| Green | On | The switch is connected to the downstream unit. | |
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Base | Base mode | Green | On | The switch is configured as the stack base unit. |
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| Off | The switch is not configured as the stack base unit (or is |
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| in standalone mode). |
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| Amber |
| Due to a stack error, the unit is unable to maintain the |
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| stack connection. |
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10/100 | 10/100 Mb/s | Green | On | The corresponding port is set to operate at 100 Mb/s, and |
Link/ | port speed |
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| the link is good. |
indicator |
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| Amber | On | The corresponding port is set to operate at 10 Mb/s, and | |
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| the link is good. |
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| Off | The link connection is bad, or there is no connection to |
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| this port. |
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Activity | Port activity | Green | Blinking | Indicates network activity for the corresponding port. A |
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| high level of network activity can cause the LEDs to |
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| appear to be on continuously. |
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HD/FD | Duplex Mode | Green | On/ | The port is configured to full duplex. |
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| Off | The port is configured to half duplex. |
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