On 26/11/09 10:16 PM, "Tait Clarridge" <tait at clarridge.ca> 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? Could you please provide some pointers on how you accomplished this? I've been attempting to set up a similar configuration without success. Thanks, Kelvin