IBM 8677 - BladeCenter Rack-mountable - Power Supply Hardware Maintenance Manual And Troubleshooting Manual page 45

The following table summarizes the types of modules that can be used in each
I/O-module bay. See "Rear view" on page 10 for the location of the I/O-module bays
on the BladeCenter unit.
Table 1. Hot-swap I/O module types by location
Bays I/O-module function
1 and 2 Network connections 1 and 2
(Ethernet) for all blade servers in the
BladeCenter unit
3 and 4 Network connections 3 and 4 (from all
blade server I/O expansion options on
blade servers in the BladeCenter unit)
Notes:
1. The enumeration of the Ethernet controllers in a blade server is
operating-system dependent. You can verify the Ethernet controller designations
a blade server uses through your operating system settings.
2. The routing of an Ethernet controller to a particular I/O-module bay depends on
the type of blade server. You can verify which Ethernet controller is routed to
which I/O-module bay by using the following test:
a. Install only one Ethernet switch module or pass-thru module, in I/O-module
bay 1.
b. Make sure the ports on the switch module or pass-thru module are enabled
(see the User's Guide or Command-Line Interface Reference Guide for your
management module type for instructions).
c. Enable only one of the Ethernet controllers on the blade server. Note the
designation the blade server operating system has for the controller.
d. Ping an external computer on the network connected to the switch module.
If you can ping the external computer, the Ethernet controller you enabled is
associated with the switch module in I/O-module bay 1. The other Ethernet
controller in the blade server is associated with the switch module in I/O-module
bay 2.
3. If you have installed an I/O expansion option on a blade server, communications
from the option are routed to I/O-module bays 3 and 4. You can verify which
controller on the option is routed to which I/O-module bay by performing the test
in note 2, using a controller on the I/O expansion option and a compatible
switch module or pass-thru module in I/O-module bay 3 or 4.
Permissible I/O module
One of the following combinations:
v Two Ethernet switch modules
v Two pass-thru modules
v One Ethernet module and one
pass-thru module
One of the following combinations:
v Two Ethernet switch modules
v Two Fibre Channel switch modules
v Two pass-thru modules
v One pass-thru module and one
Ethernet switch module
v One pass-thru module and one Fibre
Channel switch module
Important:
v The modules used must support the
network interface used on the I/O
expansion options.
v You cannot combine Ethernet and
Fibre Channel switch modules in bays
3 and 4.
Chapter 4. Installing options
35