Troubleshooting
Table 4-1. BayStack 410-24T Switch LED Descriptions (continued)
Label | Type | Color | State | Meaning |
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| Green | On | The switch is connected to the upstream unit’s Cascade A |
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| In connector. |
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| Yellow | On | The Cascade A Out connector (CAS Up) for this switch is |
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| looped internally (wrapped to the secondary ring). |
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| Yellow | Blinking | Incompatible software revision or unable to obtain a unit |
|
| or |
| ID (Renumber Stack Unit table full). The unit is on the ring |
|
| Green |
| but cannot participate in the stack configuration. |
CAS Dwn | Stack mode |
| Off | The switch is in standalone mode. |
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| Green | On | The switch is connected to the downstream unit’s |
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| Cascade A Out connector. |
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| Yellow | On | The Cascade A In connector (CAS Dwn) for this switch is |
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| looped internally (wrapped to the secondary ring). |
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| Yellow | Blinking | Incompatible software revision or unable to obtain a unit |
|
| or |
| ID (Renumber Stack Unit table full). The unit is on the ring |
|
| Green |
| but cannot participate in the stack configuration. |
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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| Blinking | Stack configuration error: Indicates that multiple base |
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| units or no base units are configured in the stack. |
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| Yellow | On | This unit is operating as the stack configuration’s |
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| temporary base unit. This condition occurs automatically |
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| if the base unit (directly downstream from this unit) fails. |
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| If this happens, the following events take place: |
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| • The two units directly upstream and directly |
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| downstream from the failed unit automatically wrap |
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| their cascade connectors and indicate this condition |
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| by lighting their Cas Up and Cas Dwn LEDs (see Cas |
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| Up and Cas Dwn description in this table). |
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| • If the temporary base unit fails, the next unit directly |
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| downstream from this unit becomes the new |
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| temporary base unit. This process can continue until |
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| there are only two units left in the stack configuration. |
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| (continued) |
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