<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"><html><head><meta name="Generator" content="Brandfu_001"><title>Understanding 802.1Qbh networking</title></head><body><div class="message"><p>Hi All</p><p>I am experimenting with a system comprising Cisco UCS Blades and Nexus<br>5k switches.</p><p>I am trying to understand the best way to define network interfaces for<br>my vms, without having to specify exact source device names or PCI<br>addresses, as I want to be able to migrate vms between nodes and not<br>have to worry about namespace or pcispace collisions.</p><p>At the moment my network definition looks like:<br><interface type='direct'><br><mac address='52:54:00:c0:cb:2a'/><br><source dev='eth55' mode='private'/><br><virtualport type='802.1Qbh'><br><parameters profileid='TestKVMProfile'/><br></virtualport><br><model type='virtio'/><br><driver name='vhost'/><br></interface></p><p><br>libvirt added a few extra settings when I added it:<br><target dev='macvtap0'/><br><alias name='net0'/><br><address type='pci' domain='0x0000' bus='0x00' slot='0x03'<br>function='0x0'/></p><p>The issue I have with this config is that I am specifying a source dev<br>(eth55), which I would have to keep manual track of across all vms in my<br>infrastructure.</p><p>Is there a way to use a high-speed virtual network interface, which is<br>created on the fly for the vm, and supports migration cleanly to another<br>kvm host (ie, does not rely on any specific host resource names).</p><p>Sorry for any confusion caused from my lack of understanding :)</p><p>Thanks<br>Chris</p></div><br clear="all" /><div style="text-align:left;line-height:1;font-family:NRB2985472185;"><table style="text-align:left; width:auto; line-height:1; vertical-align:middle;"><tbody>
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