On Monday September 08 2003 11:53 am, Christopher Wong wrote:
> Every once in a while, network traffic for eth0 stalls on my Linux machine.
> I've seen it happen on other Linux installations as well. They are all
> running a recent errata kernel (2.4.20-19.9 and 2.4.20-19.7), and a variety
> of network adapters/drivers. For no reason at all, nothing would go out.
> Sometimes some fiddling would work, sometimes it just rights itself,
> sometimes I end up rebooting. In the most recent instance, ifconfig output
> (IP address edited out) shows:
Assuing all your hardware is good.
1. Make sure you do not have two machines with the same IP address.
2. Is this a switched network?
Check the duplex setting at the switch and compare with your card
$ sudo mii-tool eth0
Also some cards do not negotiate well with certain switches and you may need
to turn on portfast or whatever it is called on your switch.
3. make sure you do not have two cards with the same MAC address. Yes, it
does happen.
> eth0 Link encap:Ethernet HWaddr 00:C0:F0:4A:72:32
> inet addr:x.x.x.x Bcast:207.180.74.255 Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:425249 errors:295 dropped:0 overruns:0 frame:346
> TX packets:530213 errors:115 dropped:0 overruns:0 carrier:115
> collisions:2631 txqueuelen:100
> RX bytes:130197745 (124.1 Mb) TX bytes:56032843 (53.4 Mb)
> Interrupt:11 Base address:0xd000
>
> lo Link encap:Local Loopback
> inet addr:127.0.0.1 Mask:255.0.0.0
> UP LOOPBACK RUNNING MTU:16436 Metric:1
> RX packets:113777 errors:0 dropped:0 overruns:0 frame:0
> TX packets:113777 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:27322169 (26.0 Mb) TX bytes:27322169 (26.0 Mb)
>
> When eth0 stalls, the TX error and carrier counts increase steadily. Anyone
> know what this means? Any suggestions on how to investigate this problem?
> It's no use Googling for ifconfig output: EVERYBODY posts ifconfig output
> for any network-related issue. Thanks.
>
> Chris
--
Stephen Carville http://www.heronforge.net/~stephen/gnupgkey.txt
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