[Openstack-operators] VLAN instead GRE (neutron/havana)

Aaron Rosen arosen at nicira.com
Tue Nov 5 04:28:22 UTC 2013


Hi George,

The vlan tag you pointed out are used to partition the br-int bridge
between tenants. If you run ovs-ofctl dump-flows br-tun you'll be able to
see the GRE flows.

Aaron


On Mon, Nov 4, 2013 at 1:16 AM, George Shuklin <george.shuklin at gmail.com>wrote:

> Good day.
>
> Can't understand why, but when instance boots neutron-ovs-agent configure
> it interface as VLAN with tag, not as GRE tunnel. I miss something?
>
> Port description from ovs database:
>
> _uuid : d43fdf4f-5724-4049-a75f-ec4214e17763
> name : "qvoc4ebf6fd-a0"
> other_config : {}
> tag : 1
> trunks : []
> vlan_mode : []
>
> (and ovs-dpctl dump-flows shows push_vlan in action list, so its vlan-port
> for sure)
>
>
> neutron agent-show:
>
> neutron agent-show 09621a72-ca02-4f71-821c-edc11e6fbb7b
> +---------------------+--------------------------------------+
> | Field               | Value                                |
> +---------------------+--------------------------------------+
> | admin_state_up      | True                                 |
> | agent_type          | Open vSwitch agent                   |
> | alive               | True                                 |
> | binary              | neutron-openvswitch-agent            |
> | configurations      | {                                    |
> |                     |      "tunnel_types": [               |
> |                     |           "gre"                      |
> |                     |      ],                              |
> |                     |      "tunneling_ip": "10.40.19.11",  |
> |                     |      "bridge_mappings": {},          |
> |                     |      "l2_population": false,         |
> |                     |      "devices": 4                    |
> |                     | }                                    |
> +---------------------+--------------------------------------+
>
> /etc/neutron/plugins/openvswitch/ovs_neutron_plugin.ini
>
> [ovs]
> network_vlan_ranges =
> tenant_network_type = gre
> tunnel_id_ranges = 1:1000
> enable_tunneling = True
> integration_bridge = br-int
> tunnel_bridge = br-tun
> local_ip = 10.40.19.11
> [securitygroup]
> firewall_driver = neutron.agent.linux.iptables_firewall.
> OVSHybridIptablesFirewallDriver
> [DATABASE]
> connection = mysql://neutron:*****@controller/neutron
>
>
>
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