[ovs-discuss] OVS with VLANs
david at dit.upm.es
Fri Aug 28 02:21:22 UTC 2015
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:
In section 4 in that page you can find the ovs-vsctl commands that VNX tool issues to create the scenario and configure VLANs.
Dpto. Ingeniería de Sistemas Telemáticos
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:
> 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?
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