Messages in this thread | | | From | "Pedro M. Rodrigues" <> | Date | Fri, 25 Feb 2000 12:15:10 +0100 | Subject | Re: [OT] 4 port ethernet cards in Linux? |
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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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