I think what you are trying to achieve is possible, assuming the main goal is to have a NIC on each VM with direct access to a public Internet connection without any NAT etc.
You mention that there is no smart VLAN switch on the network, but that could be your first stumbling block. If I wanted to give every VM a Public NIC I would use advanced Networking (Requires a V!AN Switch), use one Physical NIC for 'Management', 'Guest' and 'Public' and assign the second physical NIC as another 'Guest' Network. You then need to create a custom 'Network Offering' to create a 'shared Network' with the parameters required for your 'Public' No-NAT Network. As you have two 'Guest' networks, you will need to assign each a unique 'Tag'. Because of the Tags the default Network Services Offerings will no loger function so you will need to modify these or create new ones, Most of this will have to be done using the API not the GUI Kind Regards Geoff Higginbottom CTO / Cloud Architect geoff.higginbot...@shapeblue.com | www.shapeblue.com ShapeBlue Ltd, 53 Chandos Place, Covent Garden, London, WC2N 4HS On 23 Jun 2012, at 18:18, "Outback Dingo" <outbackdi...@gmail.com> wrote: simple setup one would think, yet accomplishing it in cloudstack had proven not feasible / capable of being done we have 1 CS management server, and 5 XCP hosts every thing has 2 nics eth0 / eth1 eth0 is on the 192.X network eth1 is on the public with 71.XXX each XCP host has labeled interfaces eth0 labeled private with 192.XXX adresses, eth1 labeled public with no IP addresses in cloudstack i wish to dual home all instances on both the 71.XXX public interface, and the 192.XXX private interface (its got storage) so when we create a instances, we can choose to "add" a secondary guest network on the 192.XXX interface attached to the "private" host interface there is no "smart" vlan capable switch in the environment, its a pretty flat network. I can do it with XCP without an issue, but when i add CS into the configuration, CS doesnt appear to allow this type of configuration and we dont to NAT... we want the public ips on the instances, not port forwarded to it question is...... HOW..... ShapeBlue provides a range of strategic and technical consulting and implementation services to help IT Service Providers and Enterprises to build a true IaaS compute cloud. ShapeBlue’s expertise, combined with CloudStack technology, allows IT Service Providers and Enterprises to deliver true, utility based, IaaS to the customer or end-user. ________________________________ This email and any attachments to it may be confidential and are intended solely for the use of the individual to whom it is addressed. Any views or opinions expressed are solely those of the author and do not necessarily represent those of Shape Blue Ltd. If you are not the intended recipient of this email, you must neither take any action based upon its contents, nor copy or show it to anyone. Please contact the sender if you believe you have received this email in error. Shape Blue Ltd is a company incorporated in England & Wales.