User's Manual

Using FlexAddress 157
Enabled slots will be FlexAddress enabled for all fabrics that are enabled. For
example, it is not possible to enable Fabric-A and B, and have Slot 1 be
FlexAddress enabled on Fabric-A but not on Fabric-B.
Use the following RACADM command to enable or disable fabrics:
racadm setflexaddr [-f <fabricName> <state>]
<fabricName> = A, B, C
<state> = 0 or 1
Where 0 is disable and 1 is enable.
Use the following RACADM command to enable or disable slots:
racadm setflexaddr [-i <slot#> <state>]
<slot#> = 1 to 16
<state> = 0 or 1
Where 0 is disable and 1 is enable.
For additional information on the command, see "setflexaddr" on page 333.
Additional FlexAddress Configuration for Linux
When changing from a server-assigned MAC to chassis-assigned MAC on
Linux-based operating systems, additional configuration steps may be
required:
• SLES 9 and SLES 10: Users may need to run YAST (Yet another Setup
Tool) on their Linux system to configure their network devices and then
restart the network services.
• RHEL 4 and RHEL 5: Users will need to run Kudzu, a utility to detect and
configure new/changed hardware on the system. Kudzu will present the
user with The Hardware Discovery Menu, it will detect the MAC address
change as Hardware was removed and new Hardware added.
Wake-On-LAN with FlexAddress
When the FlexAddress feature is deployed for the first time on a given server
module, it requires a power-down and power-up sequence for FlexAddress to
take effect. FlexAddress on Ethernet devices is programmed by the server
module BIOS. In order for the server module BIOS to program the address, it