User Manual
Rev 2.1-1.0.6
Mellanox Technologies
226
A.5 Subnet Manager – OpenSM
FlexBoot requires a Subnet Manager to be running on one of the machines in the IB network.
OpenSM is part of the Mellanox OFED for Linux software package and can be used to accom-
plish this. Note that OpenSM may be run on the same host running the DHCP server but it is not
mandatory. For details on OpenSM, see “OpenSM – Subnet Manager” on page 138.
A.6 BIOS Configuration
The expansion ROM image presents itself to the BIOS as a boot device. As a result, the BIOS
will add to the list of boot devices “MLNX FlexBoot <ver>” for a ConnectX device. The priority
of this list can be modified through BIOS setup.
A.7 Operation
A.7.1 Prerequisites
• Make sure that your client is connected to the server(s)
• The FlexBoot image is already programmed on the adapter card – see Section A.3
• For InfiniBand ports only: Start the Subnet Manager as described in Section A.5
• The DHCP server should be configured and started (see Section 4.3.3.1, “IPoIB Config-
uration Based on DHCP”, on page 57
• Configure and start at least one of the services iSCSI Target (see Section A.9) and/or
TFTP (see Section A.6)
option dhcp-client-identifier =
ff:00:00:00:00:00:02:00:00:02:c9:00:00:02:c9:03:00:00:10:39;
}
This section applies to ports configured as InfiniBand only.
To use OpenSM caching for large InfiniBand clusters (> 100 nodes), it is recommended
to use the OpenSM options described in Section 8.2.1, “opensm Syntax”, on
page 138
.