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Date:      Fri, 14 Dec 2001 12:46:26 +0100
From:      Nils Holland <nils@tisys.org>
To:        freebsd-questions@freebsd.org
Subject:   vr troubles
Message-ID:  <20011214124626.A3163@tisys.org>

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Hi folks,

I have a kind of serious problem with my D-Link DFE530-TX NIC. Let me give
you some details about my network and what the problem is, so that someone
will probably be able to suggest something I could do to solve it:

So, my LAN consists presently of 4 machines, all of which are connected by
means of twisted pair Ethernet cable. I am using two hubs, which have been
daisy-chained together. The network operates at 10 Mbps (10Base-T), as you
will already have guessed. Three of the four machines are equipped with
10Base-T NICS, the hubs are also 10Base-T. The DFE530-TX that makes the
problems is actually a 100Base-T NIC, but under the conditions outlined
above, it of course also runs at 10 Mbps only. As such, it even seems to
be configured fine:

vr0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	inet 192.168.0.5 netmask 0xffffff00 broadcast 192.168.0.255
	inet6 fe80::205:5dff:fe08:caa2%vr0 prefixlen 64 scopeid 0x1 
	ether 00:05:5d:08:ca:a2 
	media: Ethernet autoselect (10baseT/UTP)
	status: active
faith0: flags=8000<MULTICAST> mtu 1500
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
	inet6 ::1 prefixlen 128 
	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3 
	inet 127.0.0.1 netmask 0xff000000 

Now, here comes the problem: I recently tried to copy a large file (500 MB)
from one machine to the DFE530 machine via FTP. Strangely, I never managed
to get much more than 10% of the filed copied - after that my machine would
no longer be able to communicate with the network in any way. FTP would
hang, and ping wouldn't work (execpt for saying something like: "sendto: No
more buffer space available").

As far as my solution to this problem is concerned, well, I can do
"ifconfig vr0 down" followed by "ifconfig vr0 up" and the card will respond
again. However, it will hang again quiet soon (for example, when I try to
retransmit my 500 MB file).

It should ne noted that every now and then (but without a clear pattern) I
also received a message saying "vr0: watchdog timeout".

So, what do I do? Any suggestions? I thought that I should probably try
changing the current setting of my card from "media autodetect" to fixed
"10baseT/UTP", but I'm not sure if that will help, since the above ifconfig
output suggests that the network medium has been recognized successfully.

Any suggestions are welcome - oh, and for information purposes, I added
below the section of my /var/log/messages where the network card is being
detected/initialized.

Greetings
Nils

Dec 14 11:20:10 poison /kernel: vr0: <VIA VT6102 Rhine II 10/100BaseTX> port 0xd000-0xd0ff mem 0xd7000000-0xd70000ff irq 5 at device 13.0 on pci0
Dec 14 11:20:10 poison /kernel: vr0: Ethernet address: 00:05:5d:08:ca:a2
Dec 14 11:20:10 poison /kernel: miibus0: <MII bus> on vr0
Dec 14 11:20:10 poison /kernel: ukphy0: <Generic IEEE 802.3u media interface> on miibus0
Dec 14 11:20:10 poison /kernel: ukphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
Dec 14 11:20:10 poison /kernel: isab0: <PCI to ISA bridge (vendor=1106 device=3074)> at device 17.0 on pci0

-- 
Nils Holland
Ti Systems - FreeBSD in Tiddische, Germany
http://www.tisys.org * nils@tisys.org

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