Re: [Xen-users] cross hypervisor communication problem

[Eric Ross <eross@xxxxxxx>]

Andy,

I talked to the networking guys, they had that feature enabled.
Unfortunately disabling it didn't help.

However, I did stumble upon something interesting.

route showed something like this

localnet    *       255.255.255.0   U     0      0        0 eth0
default   something 0.0.0.0         UG    100    0        0 eth0

getting rid of the route for localnet and sending everything to the
default gateway fixed everything.  Unfortunately, I consider this more
of a temporary hack then a solution.  Does anyone see something I am
missing, or perhaps a better solution?

Andy - thanks for all the help btw.

Thanks,
---------------------------------------------------------------------
Eric Ross
Linux Systems Administrator
Argonne National Laboratory
Computing and Information Systems
Phone: 630.252.2600
---------------------------------------------------------------------


Andy Burns wrote:
> 2008/8/20 Eric Ross <eross@xxxxxxx>:
> 
>> Dom0 brctl output
>>
>> bridge name     bridge id               STP enabled     interfaces
>> xenbr0          8000.feffffffffff       no              vif0.0
>>                                                        peth0
>> xenbr1          8000.feffffffffff       no              vif0.1
>>                                                        peth1
>> NOTE: this is the same for all my Dom0s
> 
> Are the ports of the switches that your dom0s are connected to set to
> "portfast" mode? (ok that's a cisco term but other brands have their
> equivalent)  they should *not* be.
> 
> If using Cisco, other portsecurity settings can clash such as only
> allowing single MAC addresses per port etc.
> 
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