Re: [tlug] network losing connection

[Sigurd Urdahl <sigurdur@??>]

Matt Gross wrote:
> Hi Everyone,
>
> I am having a lot of problems with my Fedora Core 6 server connection
> going down when traffic increases.  I bought a new switch (mine is quite
> old) in hopes of fixing the problem, however, that seems to have
> exacerbated the problem.  
>   
It could be both an ethernet problem and a problem higher up. The 
suggestion to read logs is a good starting point.

If it's an ethernet problem you should be able to see it in the output 
from ifconfig:

sigurdur@??:~$ /sbin/ifconfig
eth0      Link encap:Ethernet  HWaddr 00:13:D3:C1:CF:A0 
         inet addr:192.168.43.135  Bcast:192.168.43.255  Mask:255.255.255.0
         inet6 addr: fe80::213:d3ff:fec1:cfa0/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:9184658 errors:0 dropped:0 overruns:0 frame:0
         TX packets:8403557 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1000
         RX bytes:1260796022 (1.1 GiB)  TX bytes:2957724591 (2.7 GiB)
         Interrupt:217 Base address:0x4000

If "errors" increases it's at least an indication that this problem is 
ethernet related.

Is the problem noticeable between computers on the same LAN, or only 
through a broad band router or something like that? If the former, try 
setting static arp entries on both servers to see if it's an arp related 
problem.

kind regards,
-sig

--
Sigurd Urdahl
Linux, goofing, cooking, making fire, computer security, having a
beer. Give me good music.