Did you check the bridge on Dom0 and make sure STP is off on that bridge?
On 3/15/2010 3:25 AM, Manuel SUBREDU wrote:

The switch ports are already configured with portfast.
On 03/15/2010 10:29 AM, Fajar A. Nugraha wrote:

 The problem: random, when we start or stop a virtual machine, the dom0
network connection hangs. Dom0 doesn't respond to ping or anything else.

I'm guessing it has to do with spanning tree (portfast) setting on
your switch. Try changing you current setting.
When functioning as Xen dom0, the server will behave (networking-wise)
more like a switch instead of a single host, so some adjustments might
be required on your uplink switches. Set it the same way you would if
its connected to another switch.

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