Troubleshooting the T4000 Control Boards
Problem:
Description:
The following alarms and LEDs indicate a problem with a Control Board:
The yellow
FAILLED on the Control Board faceplate is lit, which indicates that the Ethernet switch in the Control Board has failed.The green
OKLED on the Control Board faceplate is not lit.The red host subsystem
FAILLED on the craft interface is lit, which indicates that the Control Board has failed or has been removed.The green host subsystem
OKLED on the craft interface is not lit.
In Table 1, the text in the LCD Message column appears in the display of the craft interface. The text in the CLI Message column appears in the output of the show chassis alarms command.
Table 1: T4000 Chassis Alarm Messages and Solutions for the Control Boards
Alarm Type | LCD Message | CLI Message | Alarm Condition | Solution |
|---|---|---|---|---|
Red | CB cb-number Removed | CB cb-number Removed | A Control Board has been removed. | Reinstall the Control Board. |
CB cb-number Failure | CB cb-number Failure | A Control Board has failed. | Replace the Control Board. | |
Yellow | CB cb-number Ethernet Switch Failure | CB cb-number Ethernet Switch Failure | A Control Board’s Ethernet switch has failed. | Replace the Control Board. |
CB cb-number Unsupported | CB cb-number Not Supported | An unsupported Control Board is installed. | Install a supported Control Board. See T4000 Control Board Description. |
The CB cb-number Unsupported alarm can occur even when you are integrating a new line-card chassis (LCC) into an existing TX Matrix Plus router. The alarm occurs when the LCC is booting and is unable to check the connectivity between the LCC and the switch-fabric chassis (SFC), before the cable between the Control Board of the LCC and the connector interface panel (CIP) of the SFC is connected. Connecting the LCC CB to the CIP on the SFC clears the alarm.
Solution
To troubleshoot the Control Boards:
- Check the LEDs on the faceplate of each Control Board.
- Check the LEDs on the craft interface.
- Use the show chassis alarms command to view the alarms.
- Use the show chassis environment cb command
to check the status of the Control Boards. Verify that the Control
Boards are Online.
user@host> show chassis environment cbCB 0 status: State Online Master Temperature 29 degrees C / 84 degrees F Power: 1.8 V 1809 mV 2.5 V 2496 mV 3.3 V 3295 mV 4.6 V 4687 mV 5.0 V 5042 mV 12.0 V 11985 mV 3.3 V bias 3277 mV 8.0 V bias 7472 mV GBUS Revision 40 FPGA Revision 7 - Based on the messages on the LCD and the CLI, follow the instructions given in Table 1 to troubleshoot the Control Board.