I'm trying to test how GRE isolation works in cloudstack 4.2 I have deployed two VMs In a single zone on two different hosts. The first VM works fine, however the second VM does not receive an IP address from the virtual router. It seems the GRE tunnel is not build between the two XenServers so when the second VM boots it is unable to contact the virtual router since it is running on a different host.
The way I have configured the XenServer networking is: Two physical NICs One NIC for the Public,Management and storage network, using VLAN isolation The other NIC for the guest network using GRE. The guest NIC on the XenServers have an IP and the XenServers can talk to each other over that NIC. It just seems as though OVS on the XenServers is not building the GRE tunnel, not sure how to troubleshoot this. Any suggestions? -- Luca Salvatore Senior Network & Security Engineer [cid:7482C0C1-36E7-4CCB-8CA5-720ACD9C856C] Direct +61 2 8221 7132 | Mobile +61 414 700 383 Email l...@ninefold.com<mailto:l...@ninefold.com> | Twitter @ninefold<http://www.twitter.com/ninefold> Australia's Cloud | Ninefold<http://www.ninefold.com/> Sign up in seconds. Start using in minutes. Benefit for years