4000 Series LED indicators
The following describes the status LED indications on a 4000 Series Ethernet Routing Switch (ERS).
Switch LED state indicators:
|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 switch 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 indicatorsThe 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
|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.|
|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:
|In Use||The SFP port and the transmit port are active.|
|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:
|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.|