Imm Communications Troubleshooting; Imm Functions To Help You Perform Problem Determination - IBM System x3850 X5 Implementation Manual

6.8.3 IMM communications troubleshooting

The Integrated Management Module User Guide is an excellent guide to help you with every
aspect of configuring and using the IMM. Download the guide from this website:
http://ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5079770
Most communication errors are due to network switch configuration options, such as blocked
ports or VLAN mismatches. The following procedure shows you how to determine this type of
problem by connecting directly to the IMM port with a mobile computer and Ethernet patch
cable and pinging and then starting a web session.
Crossover cable: The management port is a 10/100 Ethernet port, so if your mobile
computer does not have a 10/100/1000 Ethernet port on it, you will need to replace the
patch cable with a 10/100 crossover cable. Only a 1Gb Ethernet port has the ability to
auto-negotiate medium-dependent interface crossover (MDIX) when they auto-negotiate
speed and duplex.
If you can ping the IMM, you have a good direct network link. If the web session fails, go
through the following steps:
1. Try another web browser.
2. Directly access the Integrated Management Module configuration panel and reset the IMM
in F1-Setup by selecting System Settings  Integrated Management Module  Reset
IMM. You will have to wait about 5 minutes for the IMM to complete enough of its reboot to
allow you to ping it. This IMM reset will have no impact on the operating system that is
running on the server.
3. Try clearing the web browser cache.
4. Load the factory default settings back on the IMM through F1-Setup by selecting System
Settings  Integrated Management Module  Reset IMM to Defaults. The IMM will
need to be reset again after the defaults are loaded.
5. Contact IBM support.

6.8.4 IMM functions to help you perform problem determination

This section provides additional problem determination tips for the IMM. This section covers
the following topics:
"System Status"
"Virtual light path diagnostics" on page 255
"Hardware event log" on page 256
"Remote control" on page 257
System Status
The first panel that you will see after completing the login and the session timeout limits panel
is the System Status panel, as shown in Figure 6-30 on page 254. This panel provides a
quick summary review of the hardware status of the server.
A green circle indicates that all is working from a strict hardware point of view. The IMM can
check on the status of server components, the ServeRAID controllers, and PCIe interfaces to
most PCIe adapters. It does not check on the functional status of most PCIe adapters with
regard to their hardware connections to external devices. You will need to refer to the system
event log from within the operating system or the switch logs of the network and fibre switches
to which the server is connected to resolve connectivity issues.
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