[ovs-discuss] [ovn] Port bindings to network

[Ben Pfaff]

On Mon, Oct 12, 2015 at 12:14:58PM -0500, Murali R wrote:
> In other words, where is local vlan id per network stored in southbound db?
> Apparently ovn-sb.xml says:
> 
>      <p>
>       When <ref column="type"/> is set to <code>localnet</code>, this can be
>       set to indicate that the port represents a connection to a specific
>       VLAN on a locally accessible network. The VLAN ID is used to match
>       incoming traffic and is also added to outgoing traffic.
>      </p>
> 
> And as seen in email above, the type field is left empty. I could not find
> the mapping in any other published sb-db schema. So not sure where it is.

This documentation was recently reorganized for clarity.  The new
version says the following.

--8<--------------------------cut here-------------------------->8--

     Localnet Options:
       These options apply to logical ports with type of localnet.

       options : network_name: optional string
              Required.    ovn-controller   uses   the   configuration   entry
              ovn-bridge-mappings to determine how to connect to this network.
              ovn-bridge-mappings is a list of network names mapped to a local
              OVS bridge that provides access to that network.  An example  of
              configuring ovn-bridge-mappings would be:

              $ ovs-vsctl set open . external-ids:ovn-bridge-mappings=physnet1:br-eth0,physnet2:br-eth1

              When  a logical switch has a localnet port attached, every chas‐
              sis that may have a local vif attached to  that  logical  switch
              must  have  a  bridge mapping configured to reach that localnet.
              Traffic that arrives on a localnet port is never forwarded  over
              a tunnel to another chassis.

       tag: optional integer, in range 1 to 4,095
              If  set,  indicates  that  the port represents a connection to a
              specific VLAN on a locally accessible network. The  VLAN  ID  is
              used  to  match  incoming  traffic and is also added to outgoing
              traffic.