I follow the　step by [OpenStack Installation Guide for Red Hat Enterprise Linux 7, CentOS 7, and Fedora 21] finish chapter 5, and in chapter 6, I also finish [Create initial networks] section, but stuck on [Verify connectivity], can not ping from outside.

I use three nodes to exercise in VirtualBox, Host OS is Fedora 21, ip : 192.168.1.178.

controller: enp0s0 10.0.0.11, netmask 255.255.255.0 gateway 10.0.0.1

netrowk: enp0s0 10.0.0.21, netmask 255.255.255.0 gatewat 10.0.0.1
         enp0s8 10.0.1.21, netmask 255.255.255.0
         enp0s9: no ip (VirtualBox use bridge mode)

compute-01: enp0s0 10.0.0.31, netmask 255.255.255.0, gateway 10.0.0.1
            enp0s8:10.0.1.31, netmask 255.255.255.0
            enp0s9:10.0.2.31, netmask 255.255.255.0

$neutron subnet-create ext-net 192.168.1.0/24 --name ext-subnet \
  --allocation-pool start=192.168.1.201,end=192.168.1.220 \
  --disable-dhcp --gateway 192.168.1.1

$ neutron subnet-create demo-net 192.168.10.0/24 \
  --name demo-subnet --gateway 192.168.10.1

use neutron router-list command can see ip_address is192.168.1.201

could someone can help me? thanks!

Thank you to give me a new idea.

1. create a new VM become external network client.
2. set both VirtualBox network to internal network and nameing external, enable promisc to allow VM.
3. fully follow the instruct, set external to 203.0.113.0/24. It's work, I think is VirtualBox setting problem, I will finish all exercise than back to research who to setting VirtualBox network.

Thanks again.