On Tuesday, December 28, 2010 07:13:22 am robert mena wrote: > I am looking for dual or quad fast ethernet NICs that work with CentOS. > There is no need for high performance so regular fast/pci is ok. I have in a firewall box here a quad fastethernet board; lspci shows: 01:09.0 PCI bridge: Digital Equipment Corporation DECchip 21152 (rev 03) 02:04.0 Ethernet controller: Digital Equipment Corporation DECchip 21142/43 (rev 41) 02:05.0 Ethernet controller: Digital Equipment Corporation DECchip 21142/43 (rev 41) 02:06.0 Ethernet controller: Digital Equipment Corporation DECchip 21142/43 (rev 41) 02:07.0 Ethernet controller: Digital Equipment Corporation DECchip 21142/43 (rev 41) This uses the 'tulip' driver, very common, and good performance. I have another one, but this one uses the 21140 instead of the 21142. Still the tulip driver. Part number on it is 'COM-0040-50' or 123400-21-998, googling gives me that it's a Sun part....it's 32-bit PCI. The older Sun Quad Fast Ethernet (PCI) should also work fine; uses sunhme driver, IIRC, which is in the vanilla C5 kernel (I just checked the latest updated kernel; should be in all of them). The ones I found on eBay (starting at the high price of $9.99 free shipping) are 64-bit, but should work fine in a 32-bit slot, just slower. Also, I have in hand a couple of dual-port boards made by Intel; Pro/100+ Dual, part 711269-004; has two 82558B controllers and an Intel-sourced 21152 bridge (32-bit PCI). I have one of these in a CentOS 3 box, and it works fine.