Open Stack

Hi,

Those vlan tags you are showing are not the actual tags that will be seen
on the wire. Those tags are auto incremented and used for each new port
that lands on a server that is in a different network. If you run ovs-ofctl
dump-flows br-int you'll see those vlan tags are stripped off and the
correct one is added.


Look here
https://github.com/openstack/quantum/blob/master/quantum/plugins/openvswitch/agent/ovs_quantum_agent.py#L326
if
your curious about what's going on.

Aaron


On Wed, Jun 5, 2013 at 2:25 AM, Chu Duc Minh <chu.ducminh at gmail.com> wrote:

> Hi, i'm converting from GRE tunnel to VLAN tagging, and deleted all old
> project/user/net/subnet.
>
> in file /etc/quantum/plugins/openvswitch/ovs_quantum_plugin.ini @ all
> nodes, I already set:
> network_vlan_ranges = physnet1:2:4094
> When I create a new net:
> +---------------------------+--------------------------------------+
> | Field                     | Value                                |
> +---------------------------+--------------------------------------+
> | admin_state_up            | True                                 |
> | id                        | 6d7b116e-be0b-4019-8769-a50a9ca13406 |
> | name                      | net_proj_one                         |
> | provider:network_type     | vlan                                 |
> | provider:physical_network | physnet1                             |
> *| provider:segmentation_id  | 2  *                                  |
> | router:external           | False                                |
> | shared                    | False                                |
> | status                    | ACTIVE                               |
> | subnets                   | 959fe9e0-a79d-4d0f-8040-ebfab26d8182 |
> | tenant_id                 | 29ba82e97f374492a4ca02c62eb0a953     |
> +---------------------------+--------------------------------------+
>
> But when i show in network-node:
> # ovs-vsctl show
> ...
> Bridge br-int
>         Port "tapdddef664-ee"
> *            tag: 1*
>             Interface "tapdddef664-ee"
>                 type: internal
>         Port "qr-f9ba0308-2c"
> *            tag: 1*
>             Interface "qr-f9ba0308-2c"
>                 type: internal
>         Port "int-br-eth0"
>             Interface "int-br-eth0"
>         Port br-int
>             Interface br-int
>                 type: internal
>     Bridge "br-eth0"
>         Port "br-eth0"
>             Interface "br-eth0"
>                 type: internal
>         Port "phy-br-eth0"
>             Interface "phy-br-eth0"
>         Port "eth0"
>             Interface "eth0"
>
> interface for router & dhcp created are created in VLAN 1 (wrong! it
> should be created with VLAN 2)
> I try to find in config and database, but i can't found which setting that
> start with VLAN 1.
>
> Because of VLAN tag mismatch, I can't access to VM instance.
> Another weird thing is on compute node, tag is not constant when i
> create/terminate new instance:
> # ovs-vsctl show
> a9900940-f882-42f8-9b7c-9b42393ed8a4
>     Bridge "qbred613362-fe"
>         Port "qvbed613362-fe"
>             Interface "qvbed613362-fe"
>         Port "qbred613362-fe"
>             Interface "qbred613362-fe"
>                 type: internal
>         Port "taped613362-fe"
>             Interface "taped613362-fe"
>     Bridge "br-eth1"
>         Port "eth1"
>             Interface "eth1"
>         Port "br-eth1"
>             Interface "br-eth1"
>                 type: internal
>         Port "phy-br-eth1"
>             Interface "phy-br-eth1"
>     Bridge br-int
>         Port br-int
>             Interface br-int
>                 type: internal
>         Port "qvo9816466e-22"
> *            tag: 5*
>             Interface "qvo9816466e-22"
>         Port "int-br-eth1"
>             Interface "int-br-eth1"
>         Port "qvoed613362-fe"
> *            tag: 5*
>             Interface "qvoed613362-fe"
>     Bridge "qbr9816466e-22"
>         Port "qbr9816466e-22"
>             Interface "qbr9816466e-22"
>                 type: internal
>         Port "tap9816466e-22"
>             Interface "tap9816466e-22"
>         Port "qvb9816466e-22"
>             Interface "qvb9816466e-22"
>     Bridge "virbr0"
>         Port "virbr0"
>             Interface "virbr0"
>                 type: internal
>
> Do you know why it happen?
>
> When everything is ok, *tag* on both Network-node & Compute-node should
> equal *2 *(for first VM network) when I configured "*network_vlan_ranges
> = physnet1:2:4094*" ??
>
> Thank you very much!
>
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