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    SubjectRe: [OT] 4 port ethernet cards in Linux?

    In fact, channel bonding and fault tolerance is the most important
    thing i want from a quad port ethernet card. It=B4s no use at least
    in my case to upgrade a network infrastructure to switched
    equipment just to have people access s erver through a small
    straw. :) Gigabit ethernet is our of the question for now.


    Pedro




    On 24 Feb 00, at 22:40, Erik Mouw wrote:

    > 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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