[ovs-discuss] [ovs] Adding tagged interfaces to ovs-system managed interface in the system configuration.

[Krzysztof Klimonda]

Hi,

I had a configuration like that in mind:

# ip link add bond0 type bond
# ip link set em1 master bond0
# ip link set em2 master bond0
# ip link add link bond0 name mgmt type vlan id 100
# ip link add link bond0 name ovs_tunnel type vlan id 200

# ovs-vsctl add-br br0
# ovs-vsctl add-port bond0

# ip link |grep bond0
6: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 9000 qdisc noqueue master ovs-system state UP mode DEFAULT group default qlen 1000
7: mgmt at bond0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue state UP mode DEFAULT group default qlen 1000
#

On Wed, Jun 23, 2021, at 18:51, Ben Pfaff wrote:
> On Tue, Jun 22, 2021 at 09:58:49PM +0200, Krzysztof Klimonda wrote:
> > Hi,
> > 
> > I have tried the following configuration for the system-level network in the lab:
> > 
> >                                            
> >                               +--vlan10 at bond0
> > ens1--+                      |              
> >        ---bond0 (ovs-system)--+--vlan20 at bond0
> > ens2--+                      |              
> >                               +--vlan30 at bond0
> > 
> > The idea is to plug bond0 into openvswitch so that I can add specific VLANs to my virtual topology, but push some of those VLANs into system without doing any specific configuration on the ovs side (for example, to have access to the management interface even if vswitchd is down).
> > 
> > This seems to be working fine in my lab (there is access to the management interface - vlan10 - even when bond0 has ovs-system as master), but are there any drawbacks to such a configuration?
> 
> It's hard to guess how you're implementing this.  If you're doing it
> with something like this:
> 
>     ovs-vsctl add-port br0 ens1
>     ovs-vsctl add-port br0 ens2
>     ovs-vsctl add-bond br0 bond0 ens1 ens2
>     ovs-vsctl add-port br0 vlan1 tag=1 -- set interface vlan1 type=internal
>     ovs-vsctl add-port br0 vlan2 tag=2 -- set interface vlan2 type=internal
>     ovs-vsctl add-port br0 vlan3 tag=3 -- set interface vlan3 type=internal
> 
> then it ought to work fine.
> 


-- 
  Krzysztof Klimonda
  kklimonda at syntaxhighlighted.com