Hi All,

I have a packstack setup of newton openstack on three nodes. Controller, compute and network nodes. When I use tenant network of type vxlan, it is working fine. But when I change the tenant network type in ml2.conf to 'vlan', the instance creation is failing.

The neutron logs show this:

2017-06-30 07:43:09.964 39076 ERROR neutron.plugins.ml2.managers [req-ea365127-7798-48ad-9b3f-adcde3e075ee 43963a5dfc084e819c2e3cd6b8cffb93 4457cb0b375345cdb8a23e2ed0c0dc83 - - -] Failed to bind port e8fcd9a6-5b03-46cc-a777-0a92496108ac on host compute for vnic_type normal using segments [{'segmentation_id': 70, 'physical_network': u'br-ens38', 'id': u'cb25d3c8-24db-4366-8d0d-1c30832e2846', 'network_type': u'vlan'}]

These are my configurations from compute node:

[root@compute ~]# cat /etc/neutron/plugins/ml2/openvswitch_agent.ini |  grep -v '^$\|#'
[DEFAULT]
[agent]
tunnel_types =vxlan
vxlan_udp_port = 4789
l2_population = False
drop_flows_on_start = False
[ovs]
integration_bridge = br-int
tunnel_bridge = br-tun
local_ip = 192.168.91.130
bridge_mappings = physnet1:br-ens38
[securitygroup]
firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
----------------

[root@compute ~]# ovs-vsctl show
7f3ba819-2fea-436b-806f-5e546e5c31ae
    Manager "ptcp:6640:127.0.0.1"
        is_connected: true
    Bridge br-tun
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port "vxlan-c0a85b83"
            Interface "vxlan-c0a85b83"
                type: vxlan
                options: {df_default="true", in_key=flow, local_ip="192.168.91.130", out_key=flow, remote_ip="192.168.91.131"}
        Port br-tun
            Interface br-tun
                type: internal
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
    Bridge br-int
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
        Port "int-br-ens38"
            Interface "int-br-ens38"
                type: patch
                options: {peer="phy-br-ens38"}
        Port br-int
            Interface br-int
                type: internal
    Bridge "br-ens38"
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port "br-ens38"
            Interface "br-ens38"
                type: internal
        Port "phy-br-ens38"
            Interface "phy-br-ens38"
                type: patch
                options: {peer="int-br-ens38"}
    ovs_version: "2.6.1"
---------------------

These are the configuration from network node:

[root@network ~]#  cat /etc/neutron/plugins/ml2/openvswitch_agent.ini |  grep -v '^$\|#'
[DEFAULT]
[agent]
tunnel_types =vxlan
vxlan_udp_port = 4789
l2_population = False
drop_flows_on_start = False
[ovs]
integration_bridge = br-int
tunnel_bridge = br-tun
local_ip = 192.168.91.131
bridge_mappings = physnet1:br-ens38
[securitygroup]
firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
[root@network ~]#
[root@network ~]# ovs-vsctl show
b1ba7d87-571f-4ec4-a95c-564410baaef8
    Manager "ptcp:6640:127.0.0.1"
        is_connected: true
    Bridge br-tun
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port "vxlan-c0a85b82"
            Interface "vxlan-c0a85b82"
                type: vxlan
                options: {df_default="true", in_key=flow, local_ip="192.168.91.131", out_key=flow, remote_ip="192.168.91.130"}
        Port br-tun
            Interface br-tun
                type: internal
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
    Bridge br-ex
        Port br-ex
            Interface br-ex
                type: internal
    Bridge "br-ens38"
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port "phy-br-ens38"
            Interface "phy-br-ens38"
                type: patch
                options: {peer="int-br-ens38"}
        Port "br-ens38"
            Interface "br-ens38"
                type: internal
        Port "ens38"
            Interface "ens38"
    Bridge br-int
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
        Port "int-br-ens38"
            Interface "int-br-ens38"
                type: patch
                options: {peer="phy-br-ens38"}
        Port br-int
            Interface br-int
                type: internal
    ovs_version: "2.6.1"
[root@network ~]#
---------------------------------

What is causing this error ? Please helpenter code here