[ovs-discuss] OVN - VLAN packet duplicate processing on egress pipeline
Anil Venkata
anilvenkata at redhat.com
Mon Jul 23 12:03:22 UTC 2018
Packets destined for VLAN remote logical ports are sent out through
physical table 65 rather than physical table 32 (Geneve remote logical
ports are sent through table 32). I found below description in ovn
architecture documentation.
http://www.openvswitch.org//support/dist-docs/ovn-architecture.7.html
A special case is that when a localnet port exists on the
datapath, remote port is connected by switching to the local‐
net port. In this case, instead of adding a flow in table 32
to reach the remote port, a flow is added in table 33 to
switch the logical outport to the localnet port, and resubmit
to table 33 as if it were unicasted to a logical port on the
local hypervisor.
Any reason for this decision. Because of this, packet is redundantly
processed in logical switch's egress pipeline on both local and remote
hypervisors.
Thanks
Anil
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