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Old 30th August 2011
BinarySpike BinarySpike is offline
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Default How do I troubleshoot an internal interface

I'm new to BSD. I have an OpenBSD box acting as a firewall and dhcp server connected to a Linksys N-wireless router configured as an access point/switch.

About once a day the internal interface (nfe0) will seem to drop and my internet will go down. I cannot ping the firewall but from the OpenBSD machine I can ping the router and broadcast. The strange thing is, the latency is +5000ms. If I perform a "ifconfig nfe0 down & ifconfig nfe0 up" the connection will restore itself and all is fine.

I checked everything in /var/log/ but could not find anything timestamp'd near when the problem occurred. I've tried disabling pf and the problem persists. I'm thinking that I have a bad cable or port that is causing the connection to drop to 10/half but I don't know how to check that, or if that would even cause high latency!

So my real question is, how can I effectively troubleshoot my internal interface?

Thanks,
Nathan
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Old 31st August 2011
BinarySpike BinarySpike is offline
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I just got back from work and my internal network has been down and a ping of my router reports "Host is down" instead of the +5000ms response. I did an ifconfig -A and my nfe0 (internal interface) reports 100/Full duplex.

/var/log/messages
Code:
Aug 30 18:45:35 triforce dhclient[12186]: routehandler: interface down
"dmesg | grep nfe0"
Code:
# dmesg | grep nfe0
nfe0 at pci0 dev 7 function 0 "NVIDIA MCP61 LAN" rev 0xa2: apic 2 int 10 (irq 10), address 00:1e:90:3e:ad:95
rlphy0 at nfe0 phy 1: RTL8201L 10/100 PHY, rev. 1
nfe0 at pci0 dev 7 function 0 "NVIDIA MCP61 LAN" rev 0xa2: apic 2 int 10 (irq 10), address 00:1e:90:3e:ad:95
rlphy0 at nfe0 phy 1: RTL8201L 10/100 PHY, rev. 1
Again, an "ifconfig nfe0 down & ifconfig nfe0 up" solved the problem. I'm stumped.
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Old 31st August 2011
BSDfan666 BSDfan666 is offline
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The problem you're experiencing tends to show up from time to time with certain drivers and/or buggy chipset revisions, the exact cause of your problem is unknown and there is very little we can do to help you here.

It might be a good idea to install another card and see if that helps, alternatively, try replacing the cable.

You should send a bug report, right now, the gnats system is down, so try sending an email to bugs@ or contact the authors mentioned in the man page.
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Old 1st September 2011
BinarySpike BinarySpike is offline
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Quote:
Originally Posted by BSDfan666 View Post
The problem you're experiencing tends to show up from time to time with certain drivers and/or buggy chipset revisions, the exact cause of your problem is unknown and there is very little we can do to help you here.

It might be a good idea to install another card and see if that helps, alternatively, try replacing the cable.

You should send a bug report, right now, the gnats system is down, so try sending an email to bugs@ or contact the authors mentioned in the man page.
I do need a couple other things from newegg...

Thanks man! I'll look for a new/better card and see about submitting a bug report!
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