IBM 7870B4U, Service Manual

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Network connection problems
Use this information to diagnose and resolve network connection errors.
Follow the suggested actions in the order in which they are listed in the Action
column until the problem is solved. The blade server connects to the network by
using shared BladeCenter unit resources. See the following table and “Solving
shared BladeCenter resource problems” on page 227.
v
See Chapter 4, “Parts listing,” on page 41 to determine which components are CRUs and which components
are FRUs.
v If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Symptom Action
One or more blade servers are
unable to communicate with
the network.
1. Check the function of the shared BladeCenter unit resources. See “Solving
shared BladeCenter resource problems” on page 227).
2. Make sure that:
v
The correct device drivers are installed. See “Firmware updates” on page 34.
v
The Ethernet controller is correctly configured. See “Configuring the Gigabit
Ethernet controller” on page 35.
v
Optional I/O expansion cards are correctly installed and configured. See
“Installing an I/O expansion card” on page 75 and Chapter 3, “Configuring
the blade server,” on page 21.
3. (Trained service technician only) Replace the system-board assembly. See
“Removing the system-board assembly” on page 97 and “Installing the
system-board assembly” on page 98.
Chapter 6. Diagnostics
171