C Troubleshooting
All diagnostic tests are run at all supported link speeds. They might temporarily lock the transmit and receive speeds to a specific speed. Some diagnostic tests require interconnecting the ports to each other or using loopback plugs. If ports are interconnected, the media (cables and transceivers) at each end of the connection must be of the same type. For example, short wavelength media must be connected to short wavelength media, and likewise with long wavelength media and copper media.
For more information about diagnostic tests and how to run them, refer to the Fabric OS Administrator’s Guide and the Fabric OS Command Reference. For information about system error messages (errShow or errDump), refer to the Fabric OS Troubleshooting and Diagnostics Guide.
Troubleshooting
| Table 26 provides a list of issues, possible causes, and recommended actions. | ||
TABLE 26 | Troubleshooting the Brocade DCX |
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Issue |
| Possible cause | Recommended action |
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Entire chassis powers off | Power supplies are inadequate to support the | Add an additional power supply. | |
automatically. |
| installed components. |
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Several or all components are not | One or both power cables may not be | Ensure that both power cables are connected to live | |
operating. |
| connected to a live source. | outlets. |
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| One or both AC power switches might be off. | Ensure that both AC power switches are on (AC |
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| switches light up green when on). |
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Serial connection is faulty or serial | Serial cable is not connected correctly. | Ensure that the cable is firmly connected to | |
port logs have incorrect or missing |
| workstation computer and to the Brocade DCX | |
information. |
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| Terminal emulator application parameters | Ensure that the terminal emulator application is |
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| are not set correctly. | configured as follows: 9600 bits per second, 8 |
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| databits, no parity, 1 stop bit, no flow control. |
Serial port might be incompatible (only
Ensure that the Brocade DCX
Pins on the serial cable or serial port might be damaged.
Remove the cable and inspect the pins on the cable and in the serial port. Do not reinstall if the pins on either component have any visible damage, as this could damage the pins on the other component. Replace the components as required.
CP Ethernet link speed is different than expected or a link cannot be established.
There might be a conflict with the CP Ethernet link speed negotiation set up by the network.
Specify the CP Ethernet link speed by typing the ifModeSet command.
For more information about Ethernet connectivity to the Brocade DCX
Configuration data is inaccurate or cannot be accessed.
Chassis was powered off/on while an WWN card was uninstalled or failed.
The Brocade DCX
Install an operational WWN card and power the system off/on again.
136 | Brocade DCX |
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