4000 Series LED indicators
The following describes the status LED indications on a 4000 Series Ethernet Routing Switch (ERS).
Switch LED state indicators:
| LED | Status | Description |
|---|---|---|
| Pwr | The switch is receiving power either from the primary or secondary power supply.. | |
| The switch is not receiving power and not operating. | ||
| Status | During start-up: The power-on self-test (POST) is complete - operating normally. After start-up: The switch is running the agent code successfully. | |
| The switch is loading the agent software code. | ||
| Error encountered when running the diagnostic software. (See note) | ||
| The switch is booting and running diagnostic software. (See note) | ||
| The switch failed the power-on self-test (POST) or failed to load the agent code. | ||
| RPS | Connected to a redundant power supply unit (RPS) and receiving power if necessary. | |
| Connected to a secondary power supply, but the power input is disconnected. (See note) | ||
| The power supply in slot 1 or slot 2 was removed after operating. (See note) | ||
| The power supply in slot 1 or slot 2 is present, but not supplying power. (See note) | ||
| No RPS, the RPS is not supplying power, or the DC/DC module is not supplying power. | ||
| Up / Down | The switch formed a neighbor with the adjacent switch over Stack up/down cables. | |
| The switch formed a partial neighbor with the adjacent switch over Stack up/down cables. Check the logs. | ||
| The Cascade Up port has detected an error. | ||
| The switch is in stand-alone mode or no link exists to the Cascade Down port. | ||
| Base | The switch is operating as the base unit for the stack. | |
| A configuration error occurred. Multiple or no base units are configured in the stack. | ||
| The switch is operating as the temporary base unit in the stack configuration. | ||
| Problem with election of stack base unit. Check only one unit has the base switch on. | ||
| The switch was not allowed to join the stack (Fast Flash). Check the switch logs. | ||
| The switch is not the stack base unit or it is operating in stand-alone mode. |
Note: Status LED state for ERS 4800 Series and PWR+ models only.
RJ-45 Port LED state indicators
The following list describes the three port LEDs:- Activity indicates the level of activity on the link.
- Link indicates the presence of an Ethernet link.
- Speed indicates the port speed (for example, 10 Mb/s, 100 Mb/s, 1000 Mb/s).
Gigabit PoE models: ERS 4524GT-PWR, 4526GTX-PWR and 4548GT-PWR
Fast Ethernet models: ERS 4526T-PWR and 4550T-PWR
| LED | Status | Description |
|---|---|---|
| Speed/PoE | Port set to 1000 Mb/s on gigabit PoE models, and 100 Mb/s on the Fast Ethernet models. | |
| Port set to 100 Mb/s on gigabit PoE models, and 100 Mb/s on the Fast Ethernet models. | ||
| Amber/Green flash: Port is experiencing a PoE error. | ||
| When the Link/Activity LED is green and the Speed LED is off, port set to 10 Mb/s for all gigabit models. | ||
| Link / Activity | Link established but no data activity exists. | |
| Link established and data activity exists (the blink rate indicates the level of activity). | ||
| The software disabled the port (Slow Flash). | ||
| Port not used. | ||
| The port has no link or activity. |
Note: If you link two ports explicitly set for different speeds (for example one configured as 10BaseT and the other as 100BaseTX) the port link LED may indicate a link, but the switch does not establish a link. Always connect ports using the same set speed or use auto-negotiation on each switch.
SFP transceiver Port LED state indicators:
| LED | Status | Description |
|---|---|---|
| In Use | The SFP port and the transmit port are active. | |
| Not applicable. | ||
| SFP Installed, TX Port Inactive | ||
| No SFP transceiver is present. | ||
| Link / Activity | The link is operating normally. | |
| Activity exists on the port (Activity). | ||
| Software disabled the port (Slow Flash). | ||
| No link exists. |
SFP+ Port LED state indicators:
| LED | Status | Description |
|---|---|---|
| TX / RX | SFP+ detected and link established. | |
| SFP+ established and transmit/receive activity detected. | ||
| SFP detected and link established. | ||
| SFP established and transmit/receive activity detected (Flashing). | ||
| TX and RX blink together slowly to indicate a disabled port (Blinking). | ||
| No SFP or SFP+ connection detected. |