[Xen-users] Debug network failures

[Rubén Marrero <ruben@xxxxxxxx>]

Hi list!

I have a couple of Tyan transport servers with a mix of CentOS 5.4, CentOS 5.3 
and Ubuntu server 9.10 as DomUs.

The Dom0 is CentOS 5.4 on both boxes. Networking is xen bridged with a mix of 
public and private IPs for the DomUs which works as intended most of the time.

Everything works fine, but suddenly some of my virtual machines at random 
intervals lose connectivity, mainly the Ubuntus that work as internal and 
external DNS. Sometimes I need to restart networking on the machines, sometimes 
I need to reboot the DomUs to regain connectivity.

Instead of pasting lots of config files, could you point me in the right 
direction where can I start debugging? 

Thanks,
Rubén

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