[ovs-discuss] SFC using OVN

Ben Pfaff blp at nicira.com
Tue Nov 3 20:13:45 UTC 2015


On Nov 3, 2015 11:57 AM, "Ben Pfaff" <blp at nicira.com> wrote:
>
> On Tue, Oct 27, 2015 at 01:14:42AM -0500, V_Dham at Dell.com wrote:
> > I am currently exploring Service Function Chaining (SFC)
> > implementation using OVN and would like to hear thoughts from the
> > community.
> >
> > Has anyone implemented Service Function Chaining using OVN project and
> > would be willing to share his/her experiences? There are proposals for
> > adding NSH header as well as leveraging MPLS headers (interim solution
> > for lack of NSH support) for SFC but can someone more experienced in
> > this topic share if those modifications are really necessary for real
> > world SFC use cases?
> >
> > With the native support for L2 overlays and ACLs inherently built into
> > OVN, I am wondering if we are better off creating point to point
> > overlay networks between the VNFs and using ACLs for traffic
> > classification. Or is there more to it than that?
>
> Justin, Russell, Thomas, and I brainstormed together about SFC a bit in
> Tokyo.  There was a brief discussion related to the topic on the
> openstack-dev list last week as well (see the thread
> "[neutron][networking-sfc] API clarification questions").  Thomas built
> a strawman prototype, I believe, though as I understand it the
> conversation on openstack-dev meant that it implemented an inadequate
> model.
>
> I don't know what the immediate plans are, but I expect that there'll be
> a place for SFC in OVN.

Correction: Russell wrote the prototype.
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