Hello all, I am having trouble figuring out the best way to connect multiple xen servers together. I have one connection coming into eth0 with 15 public ip addresses assigned . Do i need a second internet connection or is there a way to put the second one behind the first and have it routed that way? Also is there a way to set up nat on the first server to forward packets to my internal network (eth1) without affecting the virtual machines. Thank You Josh _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> I am having trouble figuring out the best way to connect multiple xen > servers together. I have one connection coming into eth0 with 15 > public ip addresses assigned . Do i need a second internet connection > or is there a way to put the second one behind the first and have it > routed that way? Also is there a way to set up nat on the first > server to forward packets to my internal network (eth1) without > affecting the virtual machines.You can do this in many ways. You can use vif-route with proxyarp and route the IPs to the domUs via dom0. You can also create one or more bridges. One example: [dom0-eth0]----[dom0-br0]---[firewall-eth0] [firewall-eth1]---[dom0-br1]---[domU1-eth0] |--------[domU2-eth0] |--------[domU3-eth0] Here dom0 attaches eth0 to bridge br0. It starts a firewall domU with two network interfaces. Its eth0 is connected to br0 too. The firewall domU can then use its eth0 as if it were directly connected to your ISPs switch, so you can configure it as you would normally do on dom0. The firewall''s eth1 is connected to bridge br1 (created on dom0) and domU1/2/3 are also connected to bridge br1. The firewall can then do proxyarp or NAT. If the firewall runs a dhcpd on eth1 then the clients get their IP from the firewall and the firewall can handle all of the routing etc.