On Nov 21, 2013, at 2:36 PM, Digimer wrote: > On 21/11/13 17:32, aurfalien wrote: >> >> On Nov 21, 2013, at 2:24 PM, Digimer wrote: >> >>> I'm not sure what you are asking. >>> >>> You should not see the vnetX devices from the VM (or even the VM's >>> definition file). They're created as needed to link the VM's interface >>> to the bridge. Think of them as simple network cables. >>> >>> Some of the formatting isn't showing well on my mail client (text only), >>> so I am having a little trouble parsing some of the data... >>> >>> If the VMs are using br6, then you see that it's already at 9000, so you >>> should be able to use 9000 from inside the VM as well. Trick is, the >>> vnetX devices are connected to the br0 bridge instead, which is set to >>> 1500 because eth0 is still 1500. So at this point, the VMs are >>> traversing br0, not br6. >>> >>> As for 'virbr0', that is libvirtd's default NAT'ed bridge. I don't >>> recommend using those. I usually destroy them, personally. >>> >>> So to fix your problem, you need to tell the VMs to use br6. If you want >>> to use jumbo frames on br0, you need to increase the MTU of eth0. >>> Remember that the bridge will use the MTU of the lowest connected device. >> >> So far my current VMs that work, I see there network as; >> >> Host device vnet 0 (Bridge 'br0') >> >> I do not see a; >> >> Host device vnet# (Bridge 'br6') >> >> My ints of interest are set to jumbo so thats not a prob. I think the prob is that I am missing the vnet bridge device for eth6. >> >> So I'm curious why its not there and how do I create it? >> >> - aurf > > I can't speak to the tools you are using, but I can say that this is > where the bridge is defined in the VM's XML definition file: > > ==== > [root at an-c05n01 ~]# cat /shared/definitions/vm01-win2008.xml |grep vbr > -B 2 -A 5 > <interface type='bridge'> > <mac address='52:54:00:8e:67:32'/> > <source bridge='vbr2'/> > <target dev='vnet0'/> > <model type='virtio'/> > <alias name='net0'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x03' > function='0x0'/> > </interface> > ==== > > Try changing: <source bridge='br0'/> -> <source bridge='br6'/> and > restart the VM. It already has the source bridge as br6. But I think I need to have a; vnet6 to br6 relationship defined somewhere. Right now I only see; Host device eth6 to br6 but I need vnet6 to br6 or something like that. Currently, while my guest VM sees its int via ifconfig, it cannot get an packets to/from. This is why I feel the need for a vnet to br6. - aurf > > -- > Digimer > Papers and Projects: https://alteeve.ca/w/ > What if the cure for cancer is trapped in the mind of a person without > access to education? > _______________________________________________ > CentOS-virt mailing list > CentOS-virt at centos.org > http://lists.centos.org/mailman/listinfo/centos-virt