Difference between revisions of "Neutron/TrunkPort"

Revision as of 02:40, 29 October 2015

Overview

Neutron extension to access lots of neutron networks over a single vNIC as encapsulated traffic.

Design

• open design questions (etherpad.openstack.org)
• log of design decisions (etherpad.openstack.org)

openvswitch vlan model

# create trunk bridge
ovs-vsctl --may-exist add-br TRUNK-BRIDGE
ovs-ofctl del-flows TRUNK-BRIDGE

# patch trunk bridge to integration bridge
ovs-vsctl add-port TRUNK-BRIDGE PATCH-TRUNK-END-PORT -- set Interface PATCH-TRUNK-END-PORT type=patch options:peer=PATCH-INT-END-PORT
ovs-vsctl add-port br-int PATCH-INT-END-PORT -- set Interface PATCH-INT-END-PORT type=patch options:peer=PATCH-TRUNK-END-PORT

# install default drop flows on patch ports
ovs-ofctl add-flow TRUNK-BRIDGE hard_timeout=0,idle_timeout=0,priority=2,in_port=PATCH-TRUNK-END-OFPORT,actions=drop
ovs-ofctl add-flow br-int hard_timeout=0,idle_timeout=0,priority=2,in_port=PATCH-INT-END-OFPORT,actions=drop

# install remap flows for untagged traffic (default subport)
ovs-ofctl add-flow TRUNK-BRIDGE hard_timeout=0,idle_timeout=0,priority=3,dl_vlan=COMPUTE-INTERNAL-VLAN-ID,in_port=PATCH-TRUNK-END-OFPORT,actions=strip_vlan,normal
ovs-ofctl add-flow br-int hard_timeout=0,idle_timeout=0,priority=3,dl_vlan=0xffff,in_port=PATCH-INT-END-OFPORT,actions=mod_vlan_vid:COMPUTE-INTERNAL-VLAN-ID,normal

# install remap flows for tagged traffic (other subports)
ovs-ofctl add-flow TRUNK-BRIDGE hard_timeout=0,idle_timeout=0,priority=3,dl_vlan=COMPUTE-INTERNAL-VLAN-ID,in_port=PATCH-TRUNK-END-OFPORT,actions=mod_vlan_vid:INNER-VLAN-ID,normal
ovs-ofctl add-flow br-int hard_timeout=0,idle_timeout=0,priority=3,dl_vlan=INNER-VLAN-ID,in_port=PATCH-INT-END-OFPORT,actions=mod_vlan_vid:COMPUTE-INTERNAL-VLAN-ID,normal

# make the tap port pass all tags
ovs-vsctl set Port TAP-PORT vlan_mode=trunk

Work Items

• break down of work items (etherpad.openstack.org)

Links

• blueprints.launchpad.net
  • neutron: bp/vlan-aware-vms
  • nova: bp/trunk-port
• specs.openstack.org
  • neutron: neutron-specs/liberty/vlan-aware-vms
  • nova: nova-specs/mitaka/trunk-port
• review.openstack.org
  • neutron-spec: neutron-specs/vlan-aware-vms
  • nova-spec: nova-specs/trunk-port
  • neutron: project:openstack/neutron topic:bp/vlan-aware-vms
  • nova: project:openstack/nova topic:bp/trunk-port
  • python-neutronclient: project:openstack/python-neutronclient topic:bp/vlan-aware-vms
  • python-novaclient: project:openstack/python-novaclient topic:bp/trunk-port
  • tempest: project:openstack/tempest topic:bp/vlan-aware-vms
• vBrownBag session at Tokyo Summit (youtube.com)