strange NIC behaviour?
Dear list users, I know, this here is more HW than security related; but still maybe something for the SuSE people: I'm setting up a PC with 3 eths. This PC should become a bridge where an ipchains filter runs on. The NICs are: 1 x ne2k-pci 1 x 3c59x 1 x 3c90x 1. The 3c905C-TX card does not run with 3c90x module. 2. Starting 3c59x module it recognizes both 3Com Cards as 3c59x and starts them. 3. Into Yast configuration I put eth0 = 3c59x, eth1 = ne2k-pci while the 3c90x is built into pci slot but not loaded. When restarting the network daemon linux sees eth0=3c59x and eth1=3c59x while ne2k-pci is not loaded. Please anybody help me before I replace one 3Com eth with an intel etherexpress which will cost me another CHF 100.00 Thanx a lot Philipp
Philipp Snizek wrote:
Dear list users,
I know, this here is more HW than security related; but still maybe something for the SuSE people:
I'm setting up a PC with 3 eths. This PC should become a bridge where an ipchains filter runs on. The NICs are: 1 x ne2k-pci 1 x 3c59x 1 x 3c90x
1. The 3c905C-TX card does not run with 3c90x module. 2. Starting 3c59x module it recognizes both 3Com Cards as 3c59x and starts them. 3. Into Yast configuration I put eth0 = 3c59x, eth1 = ne2k-pci while the 3c90x is built into pci slot but not loaded. When restarting the network daemon linux sees eth0=3c59x and eth1=3c59x while ne2k-pci is not loaded.
Please anybody help me before I replace one 3Com eth with an intel etherexpress which will cost me another CHF 100.00
Thanx a lot Philipp
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Hi, Philipp Snizek wrote:
Dear list users,
1 x ne2k-pci 1 x 3c59x 1 x 3c90x
1. The 3c905C-TX card does not run with 3c90x module. 2. Starting 3c59x module it recognizes both 3Com Cards as 3c59x and starts them. 3. Into Yast configuration I put eth0 = 3c59x, eth1 = ne2k-pci while the 3c90x is built into pci slot but not loaded. When restarting the network daemon linux sees eth0=3c59x and eth1=3c59x while ne2k-pci is not loaded.
We had the same problem, the automatically selected module is the wrong one, and this failure came with 7.1. Be sure to select the 3Com 3c90x/3c980 B/C series device module for your 3c905C ethernet board. Hope this helps, -- Denis
Philipp Snizek wrote:
Dear list users,
I know, this here is more HW than security related; but still maybe something for the SuSE people:
I'm setting up a PC with 3 eths. This PC should become a bridge where an ipchains filter runs on. The NICs are: 1 x ne2k-pci 1 x 3c59x 1 x 3c90x
1. The 3c905C-TX card does not run with 3c90x module. 2. Starting 3c59x module it recognizes both 3Com Cards as 3c59x and starts them. 3. Into Yast configuration I put eth0 = 3c59x, eth1 = ne2k-pci while the 3c90x is built into pci slot but not loaded. When restarting the network daemon linux sees eth0=3c59x and eth1=3c59x while ne2k-pci is not loaded.
Please anybody help me before I replace one 3Com eth with an intel etherexpress which will cost me another CHF 100.00
Thanx a lot Philipp
We've had a lot of problems with the 3C905C cards under Linux; maybe it was just a bad batch, but they don't seem to be as good as the 3C905B cards- I suspect that the C stands for 'cheap'. I'd suggest getting rid of it if you can, 'cos they're also really slow. William
-----Original Message----- From: wpreston@io.ebox.de [mailto:wpreston@io.ebox.de]On Behalf Of William Preston Sent: Wednesday, March 21, 2001 2:15 PM To: suse-security@suse.com Subject: Re: [suse-security] strange NIC behaviour?
We've had a lot of problems with the 3C905C cards under Linux; maybe it was just a bad batch, but they don't seem to be as good as the 3C905B cards- I suspect that the C stands for 'cheap'.
I'd suggest getting rid of it if you can, 'cos they're also really slow.
William
We use 3C905C and 3C905B here and never had problems. None of them is slower than others. This is independend of the kernel (2.2.x and 2.4.x). And one machine has additional cards: ne1k-isa and 3c59x (combo)! Did you check your cables and switch? ping -f is a good thing to check your LAN Stephan
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Stephan Christiany wrote:
-----Original Message----- From: wpreston@io.ebox.de [mailto:wpreston@io.ebox.de]On Behalf Of William Preston Sent: Wednesday, March 21, 2001 2:15 PM To: suse-security@suse.com Subject: Re: [suse-security] strange NIC behaviour?
We've had a lot of problems with the 3C905C cards under Linux; maybe it was just a bad batch, but they don't seem to be as good as the 3C905B cards- I suspect that the C stands for 'cheap'.
I'd suggest getting rid of it if you can, 'cos they're also really slow.
William
We use 3C905C and 3C905B here and never had problems. None of them is slower than others. This is independend of the kernel (2.2.x and 2.4.x). And one machine has additional cards: ne1k-isa and 3c59x (combo)!
Did you check your cables and switch? ping -f is a good thing to check your LAN
Stephan
Perhaps they were a bad batch, but we're using 3com switches and a mixture of other 3com and unbranded cards and haven't had problems with them. The problems seem to occur in full-duplex mode under high load, when you get a lot of collisions-- surely that shouldn't happen with switches? I notice that the 3C905B cards use a Lucent chipset, but the C cards use one made by a company called Broadcom William
[snip]
Did you check your cables and switch? ping -f is a good thing to check your LAN [snip]
Hello, You might also try "lspci -v" (as root) - check out the IRQs on your cards. Just in case it's a PnP configuration issue. If the cards both have the same IRQ, you could try moving one of them to a different PCI slot. John
participants (5)
-
Denis Gassilloud -
John Pinder -
Philipp Snizek -
Stephan Christiany -
William Preston