[ovirt-users] Windows Networking Issues -

[Yaniv Kaul]

On Tue, Nov 24, 2015 at 11:17 PM, Matt Wells <matt.wells at mosaic451.com>
wrote:

> Hi all, I have a question about Windows VMs and a networking issue I'm
> having.
>
> Here's the setup -
> * oVirt - 3.5.1.1-1
> * Hypervisors are CentOS 6.7 box with 2 NICs in bond0 'mode=4 miimon=100
> lacp_rate=1'
> * On bond0 I have a few networks using vlan tagging.
> * Networks are 5,10,15,20 - All on an external switch
>
> Network 15 has a Windows 2012 R2 server and a CentOS 6.7 server on it.
> The rest of the networks have a few linux.
>
> Every linux box on every network is happy.  However any and all Windows
> boxes I bring online are incapable of patching or hitting the web.  I
> pointed the Windows box to the linux box next to it as a proxy (after
> installing squid on it)  When I do that the Windows box has no issues at
> all; it's only when he's attempting to leave on his own.
>
> On my firewall I put in a 'permit any any' on the M$ box IP however all I
> see is tcp resets in PCAPs,
>

Can you verify basic IP networking is working correctly for those VMs?
For example, we've established that they can get to the Linux VMs - how?
Are they on the same subnet? Or do they go through their default gateway?
Without knowing the IP topology, if the Linux machines were on the same
subnet as the Windows one, and the Windows machine fail to get to their
default gateway for some reason, this may perfectly explain the issue.
Y.


>
> I've been playing with for some time but can't seem to find the issue.  It
> would be one thing if everything on the 15 was bad but the linux box on the
> network is fine. Here's the rub, I'm 99.999% sure this used to work.
>  gggrrr...
>
> Any assistance anyone can offer would be amazingly appreciated.
>
> Thank you for taking the time to read this.
>
>
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>
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