Management Bus Failures - Oracle SPARC Enterprise M4000 Installation And Service Manual

Resolution
1. Reseat the host link card.
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2. Move the host link card to a different slot.
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3. If no vacant slot is available in the host, swap the link card in the host with the
link card in the I/O boat.
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4. Install a known good link card in the host.
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D.2.3

Management Bus Failures

MSGID IOXSCF-8000-6H fault.chassis.iox.device.com
MSGID IOXSCF-8000-7D fault.chassis.iox.device.com
A low-speed serial bus known as the management bus is used to send and receive
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I C commands to devices in the External I/O Expansion Unit. The bus uses side-
band signals in the PCI Express cable and consists of a pair of link cards and the
cable.
If there is a failure in the management bus, the system will not be able to discover
FRUs, gather environmental readings, or process alarm conditions and hardware
state-changes for the devices accessed through the management bus.
Possible Causes
The Bridge Controller is timing out.
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The link cable has failed or is unplugged.
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D-12 External I/O Expansion Unit for SPARC Enterprise Mx000 Servers Installation and Service Manual • April 2011
If this step corrects the problem, you do not have to do anything more to
resolve this issue.
If this step does not correct the problem, and an empty slot is available in the
server IOU, go to Step
If an empty slot is not available, go to
If the problem follows the card, replace the card.
If the problem does not recur, the IOU slot is faulty. Replace the IOU.
If the error information changes, replace the link card that you moved from the
server IOU to the I/O boat.
If the error information continues unchanged, go to
If the error information continues unchanged, replace the IOU in the host.
2.
Step 3.
fault.chassis.iox.device.fail
Step 4.