Messages in this thread |  | | | Date | Thu, 24 Feb 2000 22:40:53 +0100 (MET) | | From | Erik Mouw <> | | Subject | Re: [OT] 4 port ethernet cards in Linux? |
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On Thu, 24 Feb 2000 20:05:09 +0100, Pedro M. Rodrigues wrote: > Hello all! This may be off-topic, but does anyone has experience > with 4 port ethernet cards in Linux? How good are their drivers, are > they open-source and do they provide channel bonding with any > kind of switching equipment? I´ve seen Phobos sell some with > Linux support, but now they seem to just license the technology to > OEM´s.
We have a machine with a Cogent EM110 (IIRC) 4 port ethernet card running for almost two years now. There are four DEC DC21140 chips on the card, and the standard tulip driver recognizes them without a problem.
Here is the relevant output from /proc/pci:
Bus 2, device 4, function 0: Ethernet controller: DEC DC21140 (rev 34). Medium devsel. Fast back-to-back capable. IRQ 9. Master Capable. Latency=165. Min Gnt=20.Max Lat=40. I/O at 0xec00 [0xec01]. Non-prefetchable 32 bit memory at 0xfe7ff800 [0xfe7ff800]. Bus 2, device 5, function 0: Ethernet controller: DEC DC21140 (rev 34). Medium devsel. Fast back-to-back capable. IRQ b. Master Capable. Latency=165. Min Gnt=20.Max Lat=40. I/O at 0xe880 [0xe881]. Non-prefetchable 32 bit memory at 0xfe7ff400 [0xfe7ff400]. Bus 2, device 6, function 0: Ethernet controller: DEC DC21140 (rev 34). Medium devsel. Fast back-to-back capable. IRQ 9. Master Capable. Latency=165. Min Gnt=20.Max Lat=40. I/O at 0xe800 [0xe801]. Non-prefetchable 32 bit memory at 0xfe7ff000 [0xfe7ff000]. Bus 2, device 7, function 0: Ethernet controller: DEC DC21140 (rev 34). Medium devsel. Fast back-to-back capable. IRQ a. Master Capable. Latency=165. Min Gnt=20.Max Lat=40. I/O at 0xe480 [0xe481]. Non-prefetchable 32 bit memory at 0xfe7fec00 [0xfe7fec00]. Bus 0, device 15, function 0: PCI bridge: DEC DC21152 (rev 2). Medium devsel. Fast back-to-back capable. Master Capable. Latency=64. Min Gnt=4.
As you can see the card seems to come with an onboard PCI-PCI bridge, but I'm not gonna open the box to check it ;-).
Cogent has been bought by Adaptec at the time we got the controller, and I'm not sure if Adaptec still sells this particular model.
I don't know if the card supports channel bonding: we use it to make dedicated links to compute servers.
Erik
-- "God. Root. What is difference?" -- Pitr in "User Friendly" by Illiad
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