The window to vote for the Paris summit sessions has opened. I’ve submitted two talks:

http://www.openstack.org/vote-paris/Presentation/neutron-is-impossible

Neutron is Impossible!

“In this talk, we’ll demystify Neutron by explaining the what and the how of each major component. Additionally, we’ll describe what happens when you boot a VM in a visual way – How Nova interacts with Neutron, and the role of each Neutron component. We’ll talk about how Neutron accomplishes networking segmentation via VLANs and overlay networks. Just what are VLANs and tunneling, and how do they both solve the same problem? Finally, we’ll talk about what happens on the compute and network nodes by examining the different Open vSwitch and Linux bridges, patch ports and veth pairs, namespaces and tap devices and hopefully understand how it all comes together.

Following the talk, operators and developers should have a solid understanding of Neutron’s more puzzling concepts.”

http://www.openstack.org/vote-paris/Presentation/neutron-network-node-high-availability

Neutron Network Node High Availability

I’ve been working with Sylvain Afchain of Enovance on layer 3 high availability throughout the Juno cycle, and we’ve submitted a talk about it:

“Today, you can configure multiple network nodes to host DHCP and L3 agents. In the Icehouse release, load sharing is accomplished by scheduling virtual routers on L3 agents. However, if a network node or L3 agent goes down, all routers scheduled on that node will go down and connectivity will be lost. The Juno release will introduce L3 high availability as well as distributed routing.

L3 high availability schedules routers on more than a single network node. Stand-by routers use keepalive (And the VRRP protocol internally) to monitor the active router and pick up the slack in case of a failure. We’ll explain what is VRRP and how will the feature affect the network node, as well as give a demonstration.

Distributed routing, or DVR, moves routing to the compute nodes, while keeping SNAT on the network nodes.

We’ll talk about DHCP HA, go into a conceptual overview of both L3 HA and DVR, give demonstrations, and explain how to integrate them together to get the best of both worlds.”