network keep droping

[Roger Olofsson]

PP skrev:
> Izwan Mohd wrote:
>> Hi,
>>
>> I have being encountering a weird problem on my freebsd 6 , one of my 
>> remote
>> machine being down frequently lately for no particular reason, when I 
>> go to
>> the remote site to check then machine it was in good running condition 
>> but
>> no network, it even can't ping the server on the same subnet, the only 
>> way
>> to restore it back is by running:
>>
>> route -n flush && /etc/netstart
>>
>> but because it a remote machine it really troublesome to do that each 
>> time
>> the machine is down, I resorted to use a crontab scripts to automatically
>> run the previous command when it down, even tho that partial of the 
>> problem
>> is solve I still need to know what causing it. can anyone could advise me
>> where to start digging?? they is no any particular error in the log or 
>> dmseg
>> when the machine dropped it connection so I'm stuck here don't know 
>> where to
>> start, some help should clear something up for me
>>
>> TQ
> 
> This sounds vaguely similar to what I've experienced myself with an 
> onboard em0 on a Supermicro mainboard. NIC suddenly stopped working for 
> no appearent reason. Believing the NIC was bad I throw in an extra NIC 
> and ran the machine from that. But within a month a capacitor blew in 
> the PSU and when I replaced the PSU the onboard NIC worked again. This 
> scenario repeated 3 times in exactly the same way before I switched to 
> another PSU brand and haven't had any problems since. In my case I 
> couldn't get the NIC running with a simple flushing of the routes 
> though. But if nothing has changed in the software on the machine you 
> should probably start looking at the hardware.
> /PP
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Is it on DHCP? Sounds like it's lost the lease or the default route?

/R