Random Network Droping, advice needed

Joel Jaeggli joelja at darkwing.uoregon.edu
Tue Mar 16 20:46:34 UTC 2004


On Tue, 16 Mar 2004, Jim Radford wrote:

> On Tuesday 16 Mar 2004 7:56 pm, Andy Green wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> >
> > On Tuesday 16 March 2004 19:35, Jim Radford wrote:
> > > How can I gather evidence that it's my machine that's the problem?
> >
> > Look at the error stats for the adapter in ifconfig.
> 
> eth0      Link encap:Ethernet  HWaddr ??:??:??:??:??:??  
>         inet addr:???.???.???.???  Bcast:???.???.???.???  Mask:255.255.255.248
>         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>         RX packets:10127698 errors:186786 dropped:0 overruns:0 frame:279486
>         TX packets:7781618 errors:0 dropped:0 overruns:0 carrier:0
>         collisions:0 txqueuelen:1000 
>         RX bytes:3488952219 (3327.3 Mb)  TX bytes:565796174 (539.5 Mb)
>         Interrupt:10 Base address:0xe000 
> 
> So, I see errors there - what does that tell me? Sorry for not understanding.

that many frame errors is probably and indication that the other side of 
the connection is half duplex while this side is full. 

you can verify this with mii-tool... 
 
> > Get a second machine with tcpdump, via a hub if possible.... use that to
> > monitor what is going on at the wire.
> 
> Hmm, the only other machine I've got here is my work laptop - which as I 
> stated isn't 100% reliable. I'll see if I can set that off from work 
> tomorrow. Could you advise how to use tpcdump?
> 
> > Look up how to disable ECN from the list archives.
> 
> Ok...
> 
> > > This is with a Laptop, my work machine - also running Fedora. This
> > > machine also loses it's network - but this is happening every half hour,
> > > give or
> >
> > Does the mouse stop while it 'freezes'?  How about Caps Lock?
> 
> IIRC the mouse doesn't - I haven't tried Caps Lock - I will tho.
> 
> > Try disabling ACPI on the kernel commandline.
> 
> Ok. 
> 
> > Have a look in cron stuff I guess.
> 
> I couldn't see anything in there - that was one of the first places I checked 
> :)
> 
> > tcpdump from the other machine to see what's on the wire.
> 
> Cool - I'll try that as well when I'm back at work tomorrow.
> 
> Thanks,
> 

-- 
-------------------------------------------------------------------------- 
Joel Jaeggli  	       Unix Consulting 	       joelja at darkwing.uoregon.edu    
GPG Key Fingerprint:     5C6E 0104 BAF0 40B0 5BD3 C38B F000 35AB B67F 56B2






More information about the fedora-list mailing list