Hi,
just one experience of mine with Realtek 8139. I was not able to FTP upgrade Suse 9.2. Data transfer was crashing. After some *research* I changed the 8139 and problem was solved. The server was on 3c905B.
Cheers, Vlado.
On Tue, 10 May 2005, Rob wrote:
Ruslan Ermilov wrote:Greetings,
Those of you wishing to try your xl(4) card under polling(4) are welcome to test this patch:
Ruslan,
Yesterday I discovered that polling of the xl interface randomly disrupts an ssh-tunnel of mine. I think there's still a subtle, yet critical problem with xl polling.
I cannot locate the details of the problem, so I will describe the symptoms that I see in my network, and why I suspect xl polling.
Here is a sketch of my two private networks:
PC1 - GW1 ~~~~ GW2 - PC2
PC1 = PC on private network, Intel Pro/100 (fxp) GW1 = Dual-homed Gateway, 2 x 3Com 3c905B-TX (xl) GW2 = Dual-homed Gateway, 2 x RealTek 8139 (rl) PC2 = PC on private network, RealTek 8139 (rl) ~~~~ = Internet
All computers are running 5-Stable, as of May 10. All, but PC1 with fxp, use polling, with: options DEVICE_POLLING options HZ=1000
GW2 redirects (with natd) port 2200 to PC2.
PC1 establishes an ssh-tunnel to PC2: PC1$ ssh -p 2200 -N -f -R 2000:localhost:22 GW2
Then on PC2, I can use this tunnel to connect directly to PC1, for example to run xbiff: PC2$ ssh -Y -p 2000 localhost xbiff
This works beautifully, but every now and then the ssh-tunnel connection is 'closed' for no reason (the ssh-tunnel itself remains, but the connection is closed). This happens at least once an hour, seemingly at random.
After some trial and error, I discovered that the polling of the xl devices (GW1) is the culprit.
As soon as I disable the polling for the xl devices on GW1, the ssh-tunnel connection is not disrupted anymore.
-----
GW1 is also a production server, so experimenting is rather limited. However, I can run tests, if that would help resolve the problem.
Here you can find some relevant info on GW1 with the xl devices:
dmesg output: http://surfion.snu.ac.kr/~lahaye/dmesg.boot kernel configuration: http://surfion.snu.ac.kr/~lahaye/MYKERNEL /boot/loader.conf: http://surfion.snu.ac.kr/~lahaye/loader.conf
Regards, Rob.
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