Troubleshooting my network

muppski · 02-04-2005, 01:21 PM

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:24102028 errors:1758 dropped:4941 overruns:603 frame:0
TX packets:37347580 errors:0 dropped:0 overruns:2 carrier:0
collisions:0 txqueuelen:1000
RX bytes:167243708 (159.4 MiB) TX bytes:1901404719 (1.7 GiB)
Interrupt:10 Base address:0xdc00

What are these drops and errors and overruns?
I would like to know when they happend and what caused them

How do I do that?

shazam75 · 02-05-2005, 03:32 AM

check out the log files in /var/log/
it may help

Regards

ugge · 02-05-2005, 09:41 AM

The errors can be malformed packets or packets broken due to poor cabling, among other things.

Darin · 02-05-2005, 10:00 AM

If you are connected to the network via a hub this can be the result of packet collisions, which are normal on an unswitched ethernet network, although they normally show up under the collision stat. If you are on wireless, common radio frequency interference (other WAPs, 2.4g phones, many other sources) will cause errors and are also normal.

Like ugge suggested, poor cabling is also a possible candidate, as are cables too short (less than 1 meter) or too long. Cables run near EMI sources such as draped over the flourescent light ballast or behind the microwave oven, or even less drastic interference sources could be a problem.

It's also possible that it's something in your network card. Possibilities include driver issues, IRQ conflicts, or too fast of a network card for a slow system or overloaded PCI bus (gig card in a 486 as an extreme example.)

muppski · 02-06-2005, 06:05 AM

wow ....
Well it got switches and the card is connected to a switch
Poor cables hmm , its neither to long or to sshort .. its like 6meters

Well I´ll check out the log

muppski · 02-07-2005, 12:22 PM

Btw (hope its not to off-topic)

You said it could be bad cable

Well, How do I know they are not bad ? Anyway I can check?
Cuz I dont wanna go and buy a new one if these ones are working alright?

some kinda tool or software?

ugge · 02-07-2005, 01:54 PM

Cabling are tested with expensive testing equipment, so that wouldn't be a choice. (Yes, there are cheap ones, but they wouldn't help in this situation. They only tell if there are connection, not the quality of it)
First rule out all of the other options, then borrow a cable from a frind, then if it solves the problem buy a new one.