Os=centos 5.2
lspci = InfiniBand: Mellanox Technologies MT25418 [ConnectX IB DDR, PCIe 2.0 2.5GT/s] (rev a0)

ibv_devinfo=ibv_devinfo
hca_id: mlx4_0
transport: InfiniBand (0)
fw_ver: 2.3.000
node_guid: 001a:4bff:ff0c:6780
sys_image_guid: 001a:4bff:ff0c:6783
vendor_id: 0x02c9
vendor_part_id: 25418
hw_ver: 0xA0
board_id: HP_09D0000001

mstflint=
Image type: ConnectX
FW Version: 2.3.0
Device ID: 25418
Chip Revision: A0
Board ID: (HP_09D0000001)
VSD:
PSID: HP_09D0000001

When I install mellanox driver I can see both ib interfaces appearing
when doing ifconfig -a command. However, after removing mellanox driver
and trying Voltaire I can't see the either ib0 or ib1 even though the driver compiles ok and installation is successful. Do I perhaps need to upgrade firmware from mellanox's to voltaire's? Or is that not necessary? What else do I need to do/check to get this working?

thanks