[Openstack-operators] VMs on different compute hosts are not able to communicate on openstack havana, with flatdhcp, multi-host nova-network setup with kvm on ubuntu 12.04

Harish Kumar hk4cloud at gmail.com
Thu Dec 26 13:42:21 UTC 2013

Hello All,

I am trying to setup openstack with zeromq, with flatdhcp multi-host
networking with nova-network, with kvm hypervisor on ubuntu 12.04.

The problem we are facing is that the vms running on different compute
hosts are not able to communicate between them; at the same time, vms on
same host are able to communicate.

I see when I ping from vm1 running on compute1 to vm2 running on compute2,
the arp request broadcast is reaching vm2 and is replying which is reaching
compute2 bridge interface (br100 and corresponding eth interface), but the
reply is not reaching to compute1 bridge interface.

I am setting up the whole setup in vmware workstation environment.

Any help is greatly appreciated..... :)

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