IBM eServer BladeCenter 8677, Installation And User Manual

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management module attempts to use DHCP to acquire its initial IP address for the
Ethernet port. If the DHCP request fails, the management module uses a static IP
address. Therefore, the DHCP server (if used) must be on the management LAN for
your BladeCenter unit.
Notes:
1. All management modules are preconfigured with the same static IP address.
You can use the management module Web interface to assign a new static IP
address for each BladeCenter unit. If DHCP is not used and you do not assign
a new static IP address for each BladeCenter unit before attempting to
communicate with the IBM Director software, only one BladeCenter unit at a
time can be added onto the network for discovery. Adding multiple units to the
network without a unique IP address assignment for each BladeCenter unit
results in IP address conflicts.
2. For switch communication with the IBM Director server through the
management module external Ethernet port, the switch module internal network
interface and the management module internal and external interfaces must be
on the same subnet.
Configuring Wake on LAN in the BladeCenter unit
Complete the following steps to configure Wake on LAN in the BladeCenter unit:
1. Write down the MAC addresses of the integrated Ethernet controllers of each
blade server. This information can be found using the Configuration/Setup Utility
for each blade server (
Devices and I/O Ports → System MAC Addresses ). The
blade server MAC addresses can also be found on a barcode label that is on
the bottom of the blade server enclosure. There might also be a loose label that
shipped with the blade server that has the MAC addresses printed on it. The
MAC addresses are needed to configure a remote system to start the blade
servers using Wake on LAN: the remote system issues the Wake on LAN
command (magic packet) by broadcasting it to a MAC address.
2. Make sure that Wake on LAN is enabled in the BladeCenter management
module.
3. Make sure that the external ports of the Ethernet switch modules are enabled. If
the external ports are not enabled, the BladeCenter unit will not be able to
communicate with the external network.
Verifying your Wake on LAN configuration
Complete the following steps to verify that Wake on LAN was properly configured
and is functioning:
1. Start the blade server operating system.
2. Attempt to ping the remote computer that will issue the Wake on LAN command
(magic packet). This verifies network connectivity.
3. Shut down the blade server, insert a DOS bootable diskette in the diskette drive,
and then restart the blade server.
4. When the A:\ prompt appears, turn off the blade server using the power-control
button.
5. Issue the Wake on LAN command (magic packet) from the remote computer.
If Wake on LAN was properly configured and is functioning, the single blade
server will wake up. This is a good procedure to determine whether it is a single
blade or BladeCenter configuration problem, or a device driver issue within the
operating system.
Chapter 4. Configuring your BladeCenter unit
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