Tait Clarridge wrote: > On Fri, 2009-11-27 at 14:02 +1300, Steven Ellis wrote: > >> Running Centos 5.4 with KVM on a Dell R610 server and I'd like to >> control which of the four ethernet interfaces are used for specific >> tasks >> >> My ideal configuration would be >> >> eth0 - Host traffic only, no virtual guests. Used for guest mirroring >> and management. >> eth1 - NAT guest traffic only, no address for local machine and in >> some environments in the same zone as eth0 >> eth2/3 - Allocated to two different bridge devices which might be in >> separate network zones. >> >> The configuration of eth2/3 is fairly simple, my issue is restricting >> any NAT traffic to a specific ethernet devices, and ideally one with >> no local IP. >> >> Any ideas? >> >> Steve >> >> > > So if I have this right, at the basic level you wish to have: > > - One interface for Host machine > - Multiple interfaces for guest traffic > > If your environment supports VLANs (802.1Q), might I suggest a trunk > port on eth1 split up into different bridges to have the KVM guests go > through to get on different VLANs/address spaces. > > This is what I currently do for Xen and it works great. What kind of > network setup to you have? > Not quite what I'm after. My issue is I can't see any way to bring up NAT guests unless they are using a ethernet interface that has a address for the host OS. eth0 - Host OS Traffic only eth1 - NAT traffic for any guests I don't want to bridge eth2 - Bridge traffic zone 1 eth3 - Bridge traffic zone 2 Setting up eth0/2/3 is ok, but eth1 is the issue. Steve -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos-virt/attachments/20091130/f16a353c/attachment-0003.html>