[ovs-discuss] OVS with VLANs

Sundar Nadathur snadathu at altera.com
Mon Aug 31 01:09:18 UTC 2015


Thank you very much, David! That is exactly what I was missing. Now the hosts are pinging each other.

Appreciate your help!

Have a great day.

Cheers,
Sundar

-----Original Message-----
From: David Fernández [mailto:david at dit.upm.es]
Sent: Thursday, August 27, 2015 7:21 PM
To: Sundar Nadathur
Cc: discuss at openvswitch.org
Subject: Re: [ovs-discuss] OVS with VLANs

Hi Sundar,

Maybe the problem could be that you have to tell your br-int switch that the port that connects to enp1s0 is a trunk interface and carries VLAN 3.

Something like the following command issued in host 3 could do the job:

  ovs-vsctl set port enp1s0 trunk=3

Just in case it is useful, in VNX (Virtual Networks over linuX, http://vnx.dit.upm.es) site we have an example scenario using OVS and VLANs:

http://web.dit.upm.es/vnxwiki/index.php/Vnx-tutorial-openvswitch

In section 4 in that page you can find the ovs-vsctl commands that VNX tool issues to create the scenario and configure VLANs.

Best regards,
David Fernández
Profesor Titular
Dpto. Ingeniería de Sistemas Telemáticos E.T.S.I. Telecomunicación Universidad Politécnica de Madrid
e-mail: david at dit.upm.es



> El 27/8/2015, a las 3:32, Sundar Nadathur <snadathu at altera.com> escribió:
>
> Hi,
>    On two hosts running Centos 7.1, I have an eth interface each with VLAN 3 configured on top. These enp1s0.3 interfaces can ping each other.
>
> On a third host, also running Centos 7.1, I have configured an OVS br-int, with enp1s0 as a port. To this, I added an internal port with tag 10:
> # ovs-vsctl add-port br-int vlan3 tag=3 -- set interface vlan3
> type=internal # ifconfig vlan3 192.168.3.11 netmask … up Now, ifconfig
> and route commands show valid output, but we cannot ping the other hosts.
>
> If I add enp1s0.3 as the physical interface instead of enp1s0, it makes no difference. If I configure the IP directly on br-int, without a VLAN tag and use enp1s0.3 as physical interface, that doesn’t work either. However, if I configure the IP on enp1s0.3, I can then ping the other hosts, as expected.
>
> IOW, no configuration involving OVS is working with VLANs. But the direct physical interface is able to reach out on VLAN 3. The external switch is unmanaged.
>
> In all these cases, the relevant bridge and physical interfaces are “UP, RUNNING” in ifconfig. The ‘systemctl status openvswitch’ shows it is running.  Both ovsdb-server and ovs-vswitchd are running as root.
>
> What do I need to do to fix this?
>
> Cheers,
> Sundar
>
>
>
> Confidentiality Notice.
> This message may contain information that is confidential or otherwise protected from disclosure. If you are not the intended recipient, you are hereby notified that any use, disclosure, dissemination, distribution, or copying of this message, or any attachments, is strictly prohibited. If you have received this message in error, please advise the sender by reply e-mail, and delete the message and any attachments. Thank you.
> _______________________________________________
> discuss mailing list
> discuss at openvswitch.org
> http://openvswitch.org/mailman/listinfo/discuss


________________________________

Confidentiality Notice.
This message may contain information that is confidential or otherwise protected from disclosure. If you are not the intended recipient, you are hereby notified that any use, disclosure, dissemination, distribution, or copying of this message, or any attachments, is strictly prohibited. If you have received this message in error, please advise the sender by reply e-mail, and delete the message and any attachments. Thank you.


More information about the discuss mailing list