User's Manual

I/O Fabric Management 275
NOTE: Fabric verification for server MCs (mezzanine cards) is performed only
when the chassis is powered on. When the chassis is on standby power, the
iDRACs on the server modules remain powered off and thus are unable to report the
server's MC fabric type. The MC fabric type may not be reported in the CMC user
interface until the iDRAC on the server is powered on.
Invalid Configurations
There are three types of invalid configurations:
• Invalid MC (mezzanine card) configuration, where a newly installed MC
fabric is different from the existing IOM fabric
• Invalid IOM-MC configuration, where the newly installed IOM and MC
fabric does not match or is incompatible
• Invalid IOM-IOM configuration, where a newly installed IOM has a
different or incompatible fabric type from an IOM already installed in its
group
Invalid Mezzanine Card (MC) Configuration
An invalid MC configuration occurs when a single server’s MC is not
supported by its corresponding IOM. In this case, all the other servers in the
chassis can be running.
Invalid IOM-Mezzanine Card (MC) Configuration
The mismatched IOM will be held in the power-off state. The CMC adds an
entry to the CMC and hardware logs noting the invalid configuration and
specifying the IOM name. The CMC will also cause the error LED on the
offending IOM to blink. If the CMC is configured to send alerts, it sends
e-mail and/or SNMP alerts for this event.
For information about the CMC and hardware logs, see "Viewing the Event
Logs" on page 300.
Invalid IOM-IOM Configuration
The CMC holds a newly installed IOM in powered-off state, causes the
IOM’s error LED to blink, and creates entries in the CMC and hardware logs
about the mismatch.