IBM Flex System x440 Compute Node Installation And Service Manual page 474

The event is logged in the event log. See the event log for the IBM Flex System
Manager management node (if installed) or see the event log of the CMM to
determine what actions might be required to resolve this issue. See "IMM event
log" on page 63.
Two or more compute nodes are unable to communicate during initial setup:
Use the information in this section to troubleshoot two or more compute nodes
that are unable to communicate during initial setup.
Complete the following steps until the problem is solved:
1. If you have just updated the firmware for one or more devices in the chassis
2. Make sure that:
3. From the compute node operating system, verify the network settings, such as
4. From the compute node operating system, make sure that the network device is
5. Check the IBM support website for any firmware updates that might apply to
6. Check the IBM support website for any service bulletins that are related to
7. (Trained service technician only) Complete the following steps:
Two or more compute nodes experience a sudden loss of connectivity:
Use the information in this section to troubleshoot two or more compute nodes
that experience a sudden loss of connectivity.
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IBM Flex System x440 Compute Node Types 7917 and 2584: Installation and Service Guide
(such as an I/O module or CMM), install the previous level of firmware.
a. The I/O module is powered on and the applicable ports are enabled on the
I/O module.
b. All cables between the I/O module and the network device (switch or
router) are properly connected and secure and that the activity LEDs are lit
on the applicable ports.
IP address, subnet mask (if you are using IPv4), DHCP settings, and vLAN
settings, to ensure that the settings match the settings of the network device.
See the documentation for the operating system for information about checking
network settings.
active. See the documentation for the operating system for information about
viewing network devices.
this issue. You can view the release notes for a firmware update to determine
the issues that are addressed by the update.
network connectivity.
a. Force the link/duplex speed.
b. Check the connectors on the I/O module to ensure that there are no bent
pins.
c. Check the connectors on the chassis midplane to ensure there are no bent
pins. See the "IBM Flex System Enterprise Chassis Types 8721, 8724, and
8725: Installation and Service Guide" at http://
ralfss21.raleigh.ibm.com:8099/help/topic/com.ibm.acc.8721.doc/
product_page.html.
d. Remove the I/O module and install a working I/O module in the same I/O
bay.
e. If the problem is solved, replace the I/O module that you removed.
f. If the problem persists, replace the midplane.