Hi,

I followed the instructions on the [1] to configure RDO openstack with existing external network. When an instance is created , a private Ip is assigned and I manually assign a floating Ip. Everything went Ok.

However I can not access/ssh/ping instances using any of the Ips,

Private Ip - 10.0.0.2
Public Ip -192.168.4.52

Routing table of the machine where RDO is installed.
[root@Openstack01 neutron(keystone_admin)]# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.122.0   0.0.0.0         255.255.255.0   U     0      0        0 virbr0
192.168.4.0     0.0.0.0         255.255.252.0   U     0      0        0 br-ex
192.168.4.0     0.0.0.0         255.255.252.0   U     0      0        0 eth0
192.168.4.0     0.0.0.0         255.255.252.0   U     0      0        0 eth1
169.254.0.0     0.0.0.0         255.255.0.0     U     1002   0        0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U     1003   0        0 eth1
169.254.0.0     0.0.0.0         255.255.0.0     U     1171   0        0 br-ex
0.0.0.0         192.168.4.254   0.0.0.0         UG    0      0        0 br-ex

How I created the subnet
neutron subnet-create public-udara 192.168.4.0/24 --name vlan --enable_dhcp=False --allocation_pool start=192.168.4.50,end=192.168.4.100 --gateway 192.168.4.254

[1] http://openstack.redhat.com/Neutron_with_existing_external_network

Udara S.S Liyanage.
Software Engineer at WSO2.
Commiter and PPMC Member of Apache Stratos.
Blog - http://udaraliyanage.wordpress.com

phone: +94 71 443 6897