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[Eran Kuris <ekuris@xxxxxxxxxx>]

Public bug reported:

Under  /etc/neutron/l3_agent.ini  when configuring external_network_bridge = br-ex 
OVS does not create dump-flow for this vlan so we get external access. 

version : # rpm -qa |grep neutron 
openstack-neutron-7.0.1-2.el7ost.noarch
python-neutronclient-3.1.0-1.el7ost.noarch
python-neutron-7.0.1-2.el7ost.noarch
openstack-neutron-openvswitch-7.0.1-2.el7ost.noarch
openstack-neutron-common-7.0.1-2.el7ost.noarch
openstack-neutron-ml2-7.0.1-2.el7ost.noarch
[root@puma06 ~(keystone_admin)]# rpm -qa |grep openvswitch 
python-openvswitch-2.4.0-1.el7.noarch
openstack-neutron-openvswitch-7.0.1-2.el7ost.noarch
openvswitch-2.4.0-1.el7.x86_64

Installed by packstack OSP-8

step to reproduce : 
1. Deploy with packstack OSP-8 , set ETX bridge parameter -->  CONFIG_NEUTRON_L3_EXT_BRIDGE= br-ex 
2. setup ENV : 
# neutron net-create external_network --provider:network_type=vlan  --provider:segmentation_id=181 --provider:physical_network physnet --router:external
# neutron subnet-create external_network 10.35.166.0/24 --disable-dhcp --gateway 10.35.166.254  --allocation-pool start=10.35.166.1,end=10.35.166.100 
# neutron net-create int_net 
# neutron subnet-create int_net 192.168.1.0/24 --dns_nameservers list=true 10.35.28.28 --name int_sub
# neutron router-create Router_eNet
# neutron router-interface-add Router_eNet subnet=int_sub
# neutron router-gateway-set Router_eNet external_network

3. ovs-ofctl dump-flows br-ex
NXST_FLOW reply (xid=0x4):
 cookie=0x0, duration=57707.344s, table=0, n_packets=21, n_bytes=1638, idle_age=60, priority=2,in_port=2 actions=drop
 cookie=0x0, duration=57707.394s, table=0, n_packets=1233857, n_bytes=85172234, idle_age=0, priority=0 actions=NORMAL

try to ping EXT network (8.8.8.8)  -- no connectivity
4. When we change external_network_bridge = provider and creating the ENV again (new router & new routr ports )
I get EXT access and the flow created : 
# ovs-ofctl dump-flows br-ex
NXST_FLOW reply (xid=0x4):
 cookie=0x0, duration=105.955s, table=0, n_packets=5, n_bytes=402, idle_age=97, priority=4,in_port=2,dl_vlan=2 actions=mod_vlan_vid:181,NORMAL
 cookie=0x0, duration=58222.490s, table=0, n_packets=39, n_bytes=3174, idle_age=105, priority=2,in_port=2 actions=drop
 cookie=0x0, duration=58222.540s, table=0, n_packets=1244856, n_bytes=85931346, idle_age=0, priority=0 actions=NORMAL

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1530038

Title:
  when external_network_bridge is set to  br-ex ovs does not create flow
  to EXT access

Status in neutron:
  New

Bug description:
  Under  /etc/neutron/l3_agent.ini  when configuring external_network_bridge = br-ex 
  OVS does not create dump-flow for this vlan so we get external access. 

  version : # rpm -qa |grep neutron 
  openstack-neutron-7.0.1-2.el7ost.noarch
  python-neutronclient-3.1.0-1.el7ost.noarch
  python-neutron-7.0.1-2.el7ost.noarch
  openstack-neutron-openvswitch-7.0.1-2.el7ost.noarch
  openstack-neutron-common-7.0.1-2.el7ost.noarch
  openstack-neutron-ml2-7.0.1-2.el7ost.noarch
  [root@puma06 ~(keystone_admin)]# rpm -qa |grep openvswitch 
  python-openvswitch-2.4.0-1.el7.noarch
  openstack-neutron-openvswitch-7.0.1-2.el7ost.noarch
  openvswitch-2.4.0-1.el7.x86_64

  Installed by packstack OSP-8

  step to reproduce : 
  1. Deploy with packstack OSP-8 , set ETX bridge parameter -->  CONFIG_NEUTRON_L3_EXT_BRIDGE= br-ex 
  2. setup ENV : 
  # neutron net-create external_network --provider:network_type=vlan  --provider:segmentation_id=181 --provider:physical_network physnet --router:external
  # neutron subnet-create external_network 10.35.166.0/24 --disable-dhcp --gateway 10.35.166.254  --allocation-pool start=10.35.166.1,end=10.35.166.100 
  # neutron net-create int_net 
  # neutron subnet-create int_net 192.168.1.0/24 --dns_nameservers list=true 10.35.28.28 --name int_sub
  # neutron router-create Router_eNet
  # neutron router-interface-add Router_eNet subnet=int_sub
  # neutron router-gateway-set Router_eNet external_network

  3. ovs-ofctl dump-flows br-ex
  NXST_FLOW reply (xid=0x4):
   cookie=0x0, duration=57707.344s, table=0, n_packets=21, n_bytes=1638, idle_age=60, priority=2,in_port=2 actions=drop
   cookie=0x0, duration=57707.394s, table=0, n_packets=1233857, n_bytes=85172234, idle_age=0, priority=0 actions=NORMAL

  try to ping EXT network (8.8.8.8)  -- no connectivity
  4. When we change external_network_bridge = provider and creating the ENV again (new router & new routr ports )
  I get EXT access and the flow created : 
  # ovs-ofctl dump-flows br-ex
  NXST_FLOW reply (xid=0x4):
   cookie=0x0, duration=105.955s, table=0, n_packets=5, n_bytes=402, idle_age=97, priority=4,in_port=2,dl_vlan=2 actions=mod_vlan_vid:181,NORMAL
   cookie=0x0, duration=58222.490s, table=0, n_packets=39, n_bytes=3174, idle_age=105, priority=2,in_port=2 actions=drop
   cookie=0x0, duration=58222.540s, table=0, n_packets=1244856, n_bytes=85931346, idle_age=0, priority=0 actions=NORMAL

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