Topic: Why is my eth keep going down?

[David]

Can anyone help me, I have no idea why this is happen, I didn't have this problem
with other distro's of linux I've used in the past. Below I've attached alittle part of my 'message' log file. For some reason. my eth0 keeps going down for awhile then back up. I can bring up up if I do

ifconfig eth0 down
and then
ifconfig eth0 up

It just seems to do it at random, and of course just when I'm downloading something.

See "Sep 22 16:30:39 " at the bottom, then is when I issued the above statment.

Thanks.


======message log=============

Sep 22 12:56:20 cr9997008-a kernel: eth0: No 21041 10baseT link beat, Media switched to 10base2.
Sep 22 13:02:23 cr9997008-a kernel: eth0: No 21041 10baseT link beat, Media switched to 10base2.
Sep 22 13:02:26 cr9997008-a kernel: eth0: No 21041 10baseT link beat, Media switched to 10base2.
Sep 22 13:02:26 cr9997008-a kernel: eth0: 21143 10mbps sensed media.
Sep 22 13:02:29 cr9997008-a kernel: eth0: 21143 10baseT link beat good.
Sep 22 13:03:00 cr9997008-a last message repeated 20 times
Sep 22 13:04:01 cr9997008-a last message repeated 29 times
Sep 22 13:04:35 cr9997008-a last message repeated 12 times
Sep 22 13:04:36 cr9997008-a kernel: eth0: No 21041 10baseT link beat, Media switched to AUI.
Sep 22 13:04:36 cr9997008-a kernel: eth0: 21143 10mbps sensed media.
Sep 22 13:04:42 cr9997008-a kernel: eth0: 21143 10baseT link beat good.
Sep 22 13:05:14 cr9997008-a last message repeated 11 times
Sep 22 13:06:38 cr9997008-a last message repeated 16 times
Sep 22 13:07:52 cr9997008-a last message repeated 6 times
Sep 22 13:09:03 cr9997008-a last message repeated 3 times
Sep 22 13:10:26 cr9997008-a last message repeated 2 times
Sep 22 13:11:45 cr9997008-a last message repeated 7 times
Sep 22 13:12:47 cr9997008-a last message repeated 11 times
Sep 22 13:13:46 cr9997008-a last message repeated 8 times
Sep 22 13:13:55 cr9997008-a dhcpd: receive_packet failed on eth0: Network is down
Sep 22 13:13:55 cr9997008-a kernel: eth0: 21143 10baseT link beat good.
Sep 22 13:27:08 cr9997008-a kernel: eth0: No 21041 10baseT link beat, Media switched to 10base2.
Sep 22 13:34:41 cr9997008-a kernel: eth0: No 21041 10baseT link beat, Media switched to 10base2.
Sep 22 13:42:14 cr9997008-a kernel: eth0: No 21041 10baseT link beat, Media switched to 10base2.
Sep 22 13:51:17 cr9997008-a kernel: eth0: No 21041 10baseT link beat, Media switched to 10base2.
Sep 22 13:52:21 cr9997008-a kernel: eth0: No 21041 10baseT link beat, Media switched to 10base2.
Sep 22 13:55:09 cr9997008-a last message repeated 6 times
Sep 22 13:56:42 cr9997008-a kernel: eth0: No 21041 10baseT link beat, Media switched to 10base2.
Sep 22 14:00:22 cr9997008-a last message repeated 3 times
Sep 22 14:04:55 cr9997008-a kernel: eth0: No 21041 10baseT link beat, Media switched to 10base2.
Sep 22 14:08:01 cr9997008-a last message repeated 2 times
Sep 22 14:11:34 cr9997008-a kernel: eth0: No 21041 10baseT link beat, Media switched to 10base2.
Sep 22 14:15:37 cr9997008-a kernel: eth0: No 21041 10baseT link beat, Media switched to 10base2.
Sep 22 14:16:47 cr9997008-a last message repeated 3 times
Sep 22 14:19:50 cr9997008-a kernel: eth0: No 21041 10baseT link beat, Media switched to 10base2.
Sep 22 15:26:23 cr9997008-a kernel: eth0: No 21041 10baseT link beat, Media switched to 10base2.
Sep 22 16:12:25 cr9997008-a kernel: eth0: No 21041 10baseT link beat, Media switched to 10base2.
Sep 22 16:12:26 cr9997008-a kernel: eth0: 21143 10mbps sensed media.
Sep 22 16:12:27 cr9997008-a kernel: eth0: 21143 10baseT link beat good.
Sep 22 16:13:00 cr9997008-a last message repeated 8 times
Sep 22 16:15:56 cr9997008-a last message repeated 3 times
Sep 22 16:16:57 cr9997008-a last message repeated 7 times
Sep 22 16:21:49 cr9997008-a last message repeated 20 times
Sep 22 16:23:07 cr9997008-a last message repeated 8 times
Sep 22 16:23:35 cr9997008-a last message repeated 8 times
Sep 22 16:23:35 cr9997008-a kernel: eth0: No 21041 10baseT link beat, Media switched to AUI.
Sep 22 16:23:36 cr9997008-a kernel: eth0: 21143 10mbps sensed media.
Sep 22 16:23:36 cr9997008-a kernel: eth0: 21143 10baseT link beat good.
Sep 22 16:24:07 cr9997008-a last message repeated 8 times
Sep 22 16:25:11 cr9997008-a last message repeated 33 times
Sep 22 16:26:12 cr9997008-a last message repeated 37 times
Sep 22 16:27:13 cr9997008-a last message repeated 35 times
Sep 22 16:28:14 cr9997008-a last message repeated 23 times
Sep 22 16:29:16 cr9997008-a last message repeated 31 times
Sep 22 16:30:20 cr9997008-a last message repeated 26 times
Sep 22 16:30:33 cr9997008-a last message repeated 3 times
Sep 22 16:30:38 cr9997008-a dhcpd: receive_packet failed on eth0: Network is down
Sep 22 16:30:39 cr9997008-a kernel: eth0: 21143 10baseT link beat good.

[Tim Litwiller]

looks like you have a poor ground or something, it keeps changing media (cable connection) so it must be getting a voltage leak on to one of the other ports on the card and so it switches.

[Tim Litwiller]

I would check the ground on the machine it's self.