Connecting neutron networks with external networks at the layer-2 level

Registered by Rossella Sblendido on 2013-10-16

Neutron core currently has one mechanism to connect VMs in Networks to bare-metal servers in a physical L2 segment: the Provider Network extension.

This model has some limitations that were already tackled by the NVP’s Layer-2 Gateway vendor extension.

The NVP implementation has the following advantages:
1) It explicitly models the L2GW as an entity in the network. The Provider can create several L2GW objects and a Tenant can explicitly connect a network to a specific L2GW.
2) No assumption is made on the location of the external network, which may not be directly reachable from the hosts where the VMs are deployed
3) A network can be connected to multiple L2 Gateways

NVP’s Layer-2 Gateway is currently a vendor extension, the goal of this blueprint is to add a L2GW capability as a core extension.

Blueprint information

Status:
Complete
Approver:
None
Priority:
Undefined
Drafter:
None
Direction:
Needs approval
Assignee:
Rossella Sblendido
Definition:
Superseded
Series goal:
None
Implementation:
Unknown
Milestone target:
None
Completed by
Armando Migliaccio on 2015-10-13

Related branches

Sprints

Whiteboard

Gerrit topic: https://review.openstack.org/#q,topic:bp/l2-gateway,n,z

Addressed by: https://review.openstack.org/100278
    API Extension for l2-gateway

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Work Items