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Hi Dan,

Thanks for your response!

Can you please verify my configuration and suggest me for any change if
required.

should i do following changes   in my existing configuration?

flat_networks = *
bridge_mappings = external:br-ex,external1:br-ex1
ovs-vsctl add-br br-ex1
ovs-vsctl add-port br-ex *p5p3*






































* - - /etc/neutron/plugins/ml2/ml2_conf.ini file and complete the following
actions:1. 12345[ml2]...type_drivers =
flat,vlan,gre,vxlantenant_network_types = gremechanism_drivers =
openvswitch2. In the [ml2_type_flat]  123[ml2_type_flat]...flat_networks =
external3. In the [ml2_type_gre] section,
123[ml2_type_gre]...tunnel_id_ranges = 1:1000 -
 /etc/neutron/plugins/ml2/openvswitch_agent.ini [root at OSKVM1 ml2]# grep -v
^# openvswitch_agent.ini|grep -v ^$[ovs] local_ip = 10.24.0.4
bridge_mappings = external:br-ex [agent] tunnel_types = gre - To configure
the Layer-3 (L3) agentThe Layer-3 (L3) agent
<http://docs.openstack.org/kilo/install-guide/install/yum/content/neutron-network-node.html>
provides
routing services for virtual networks.-  /etc/neutron/l3_agent.ini file 1.
In the [DEFAULT] section,  12345[DEFAULT]...interface_driver =
neutron.agent.linux.interface.OVSInterfaceDriverexternal_network_bridge
=router_delete_namespaces = True NoteThe external_network_bridge option
intentionally lacks a value to enable multiple external networks on a
single agent.To configure the DHCP agentThe DHCP agent
<http://docs.openstack.org/kilo/install-guide/install/yum/content/neutron-network-node.html>
provides
DHCP services for virtual networks. 1.  /etc/neutron/dhcp_agent.ini file1.
In the [DEFAULT] section,  12345[DEFAULT]...interface_driver =
neutron.agent.linux.interface.OVSInterfaceDriverdhcp_driver =
neutron.agent.linux.dhcp.Dnsmasqdhcp_delete_namespaces = True 1.
 /etc/neutron/dhcp_agent.ini file 1. In the [DEFAULT] section,
123[DEFAULT]...dnsmasq_config_file = /etc/neutron/dnsmasq-neutron.conf2.
Created  /etc/neutron/dnsmasq-neutron.conf file and complete the following
action:1. Enable the DHCP MTU option (26) and configure it to 1454 bytes:
1dhcp-option-force=26,1454To configure the metadata agentThe metadata agent
<http://docs.openstack.org/kilo/install-guide/install/yum/content/neutron-network-node.html>
provides
configuration information such as credentials to instances. 1.
 /etc/neutron/metadata_agent.ini file 1. In the [DEFAULT] section,
1234567891011[DEFAULT]...auth_uri = http://controller:5000auth_url =
http://controller:35357auth_region = RegionOneauth_plugin =
passwordproject_domain_id = defaultuser_domain_id = defaultproject_name =
serviceusername = neutronpassword = NEUTRON_PASS In the [DEFAULT] section,
configure the metadata host: 2. 123[DEFAULT]...nova_metadata_ip
= controller3. 4. In the [DEFAULT] section, configure the metadata proxy
shared secret: 123[DEFAULT]...metadata_proxy_shared_secret
= METADATA_SECRET 1. Add the external bridge:2. # ovs-vsctl add-br br-ex3.
Add a port to the external bridge that connects to the physical external
network interface:Replace INTERFACE_NAME with the actual interface name.
For example, eth2 or ens256.# ovs-vsctl add-port br-ex p5p2RegardsGaurav
Goyal*




On Fri, Feb 10, 2017 at 11:39 AM, Gaurav Goyal <er.gauravgoyal at gmail.com>
wrote:

> Hi,
>
> I need your help to configure multiple external networks in openstack
> environment.
>
> I am using Liberty openstack.  openvswitch with gre tunneling.
> I want to create multiple external networks so that all interfaces of my
> VM can be accessible to outside world.
> I need your help to config neutron for multiple external networks.
>
> should i do following changes   in my existing configuration?
>
> flat_networks = *
> bridge_mappings = external:br-ex,external1:br-ex1
> ovs-vsctl add-br br-ex1
> ovs-vsctl add-port br-ex *p5p3*
>
> is it going to impact all existing VMs running in openstack environment?
>
>    -
>       -
>
>       Edit the /etc/neutron/plugins/ml2/ml2_conf.ini file and complete
>       the following actions:
>       1.
>
>
>
>          1
>          2
>          3
>          4
>          5
>          [ml2]
>          ...
>          type_drivers = flat,vlan,gre,vxlan
>          tenant_network_types = gre
>          mechanism_drivers = openvswitch
>          2.
>
>          In the [ml2_type_flat]
>
>
>          1
>          2
>          3
>          [ml2_type_flat]
>          ...
>          flat_networks = external
>          3.
>
>          In the [ml2_type_gre] section,
>
>
>          1
>          2
>          3
>          [ml2_type_gre]
>          ...
>          tunnel_id_ranges = 1:1000
>
>          -  /etc/neutron/plugins/ml2/openvswitch_agent.ini
>
>       [root at OSKVM1 ml2]# grep -v ^# openvswitch_agent.ini|grep -v ^$
>
>       [ovs]
>       local_ip = 10.24.0.4
>       bridge_mappings = external:br-ex
>       [agent]
>       tunnel_types = gre
>
>
>    -
>
>    *To configure the Layer-3 (L3) agent*
>
>    The Layer-3 (L3) agent
>    <http://docs.openstack.org/kilo/install-guide/install/yum/content/neutron-network-node.html> provides
>    routing services for virtual networks.
>    -
>
>        /etc/neutron/l3_agent.ini file
>       1.
>
>          In the [DEFAULT] section,
>
>
>          1
>          2
>          3
>          4
>          5
>          [DEFAULT]
>          ...
>          interface_driver = neutron.agent.linux.interface.
>          OVSInterfaceDriver
>          external_network_bridge =
>          router_delete_namespaces = True
>
>
>
>          Note
>
>          The external_network_bridge option intentionally lacks a value
>          to enable multiple external networks on a single agent.
>
> *To configure the DHCP agent*
>
> The DHCP agent
> <http://docs.openstack.org/kilo/install-guide/install/yum/content/neutron-network-node.html> provides
> DHCP services for virtual networks.
>
>    1.
>
>     /etc/neutron/dhcp_agent.ini file
>    1.
>
>       In the [DEFAULT] section,
>
>
>       1
>       2
>       3
>       4
>       5
>       [DEFAULT]
>       ...
>       interface_driver = neutron.agent.linux.interface.OVSInterfaceDriver
>       dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
>       dhcp_delete_namespaces = True
>
>
>    1.
>
>     /etc/neutron/dhcp_agent.ini file
>    1.
>
>       In the [DEFAULT] section,
>
>
>       1
>       2
>       3
>       [DEFAULT]
>       ...
>       dnsmasq_config_file = /etc/neutron/dnsmasq-neutron.conf
>       2.
>
>    Created  /etc/neutron/dnsmasq-neutron.conf file and complete the
>    following action:
>    1.
>
>       Enable the DHCP MTU option (26) and configure it to 1454 bytes:
>
>
>       1
>       dhcp-option-force=26,1454
>
> *To configure the metadata agent*
>
> The metadata agent
> <http://docs.openstack.org/kilo/install-guide/install/yum/content/neutron-network-node.html> provides
> configuration information such as credentials to instances.
>
>    1.
>
>     /etc/neutron/metadata_agent.ini file
>    1.
>
>       In the [DEFAULT] section,
>
>
>       1
>       2
>       3
>       4
>       5
>       6
>       7
>       8
>       9
>       10
>       11
>       [DEFAULT]
>       ...
>       auth_uri = http://controller:5000
>       auth_url = http://controller:35357
>       auth_region = RegionOne
>       auth_plugin = password
>       project_domain_id = default
>       user_domain_id = default
>       project_name = service
>       username = neutron
>       password = NEUTRON_PASS
>
>
>       In the [DEFAULT] section, configure the metadata host:
>       2.
>
>
>       1
>       2
>       3
>       [DEFAULT]
>       ...
>       nova_metadata_ip = controller
>       3.
>
>
>       4.
>
>       In the [DEFAULT] section, configure the metadata proxy shared
>       secret:
>
>
>       1
>       2
>       3
>       [DEFAULT]
>       ...
>       metadata_proxy_shared_secret = METADATA_SECRET
>
>
>
>
>
>    1.
>
>    Add the external bridge:
>    2.
>
>    # ovs-vsctl add-br br-ex
>    3.
>
>    Add a port to the external bridge that connects to the physical
>    external network interface:
>
>    Replace *INTERFACE_NAME* with the actual interface name. For example,
>    *eth2* or *ens256*.
>
>    # ovs-vsctl add-port br-ex *p5p2*
>
>
>
> *Regards*
> *Gaurav Goyal*
>
>
>
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