[ovs-dev] [ovs-discuss] Geneve remote_ip as flow for OVN hosts
venugopal iyer
iyervl at ymail.com
Thu Nov 29 17:40:45 UTC 2018
Sorry for the resend, I am not sure how the pictures will render in the text doc, so am attaching the PDF too.
thanks,
-venu
On Thursday, November 29, 2018, 9:26:54 AM PST, venugopal iyer <iyervl at ymail.com> wrote:
Thanks, Ben.
Sorry for the delay. Please find attached a draft design proposal and let me know your comments etc. I did some quick
prototyping to check for feasibility too; I can share that, if it helps.
Note, the document is a draft and, I admit, there might be things that I haven't thought about/through, or missed. I am
attaching a text doc, assuming it might be easier, but if you'd like it in a different format, please let me know.
thanks!
-venu
On Wednesday, October 31, 2018, 10:30:23 AM PDT, Ben Pfaff <blp at ovn.org> wrote:
Honestly the best thing to do is probably to propose a design or, if
it's simple enough, to send a patch. That will probably be more
effective at sparking a discussion.
On Wed, Oct 31, 2018 at 03:33:48PM +0000, venugopal iyer wrote:
> Hi:
> Just wanted to check if folks had any thoughts on the use case Girish outlined below. We do have
> a real use case for this and are interested in looking at options for supporting more than one VTEP IP.It is currently a limitation for us, wanted to know if there are similar use cases folks are looking at/interested in addressing.
>
> thanks,
> -venu
>
> On Thursday, September 6, 2018, 9:19:01 AM PDT, venugopal iyer via dev <ovs-dev at openvswitch.org> wrote:
>
> Would it be possible for the association <logical port|dst MAC, VTEP> to be made
> when the logical port is instantiated on a node? and relayed on to the SB by
> the controller, e.g. assuming a mechanism to specify/determine a physical port mapping for a
> logical port for a VM. The <physical port,encap-ip> mappings can be specified as
> configuration on the chassis. In the absence of physical port information for
> a logical port/VM, I suppose we could default to an encap-ip.
>
>
> just a thought,
> -venu
> On Wednesday, September 5, 2018, 2:03:35 PM PDT, Ben Pfaff <blp at ovn.org> wrote:
>
> How would OVN know which IP to use for a given logical port on a
> chassis?
>
> I think that the "multiple tunnel encapsulations" is meant to cover,
> say, Geneve vs. STT vs. VXLAN, not the case you have in mind.
>
> On Wed, Sep 05, 2018 at 09:50:32AM -0700, Girish Moodalbail wrote:
> > Hello all,
> >
> > I would like to add more context here. In the diagram below
> >
> > +----------------------------------+
> > |ovn-host |
> > | |
> > | |
> > | +-------------------------+|
> > | | br-int ||
> > | +----+-------------+------+|
> > | | | |
> > | +--v-----+ +---v----+ |
> > | | geneve | | geneve | |
> > | +--+-----+ +---+----+ |
> > | | | |
> > | +-v----+ +--v---+ |
> > | | IP0 | | IP1 | |
> > | +------+ +------+ |
> > +----------+ eth0 +-----+ eth1 +---+
> > +------+ +------+
> >
> > eth0 and eth are, say, in its own physical segments. The VMs that are
> > instantiated in the above ovn-host will have multiple interfaces and each
> > of those interface need to be on a different Geneve VTEP.
> >
> > I think the following entry in OVN TODOs (
> > https://github.com/openvswitch/ovs/blob/master/ovn/TODO.rst)
> >
> > ---------------8<------------------8<---------------
> > Support multiple tunnel encapsulations in Chassis.
> >
> > So far, both ovn-controller and ovn-controller-vtep only allow chassis to
> > have one tunnel encapsulation entry. We should extend the implementation to
> > support multiple tunnel encapsulations
> > ---------------8<------------------8<---------------
> >
> > captures the above requirement. Is that the case?
> >
> > Thanks again.
> >
> > Regards,
> > ~Girish
> >
> >
> >
> >
> > On Tue, Sep 4, 2018 at 3:00 PM Girish Moodalbail <gmoodalbail at gmail.com>
> > wrote:
> >
> > > Hello all,
> > >
> > > Is it possible to configure remote_ip as a 'flow' instead of an IP address
> > > (i.e., setting ovn-encap-ip to a single IP address)?
> > >
> > > Today, we have one VTEP endpoint per OVN host and all the VMs that
> > > connects to br-int on that OVN host are reachable behind this VTEP
> > > endpoint. Is it possible to have multiple VTEP endpoints for a br-int
> > > bridge and use Open Flow flows to select one of the VTEP endpoint?
> > >
> > >
> > > +----------------------------------+
> > > |ovn-host |
> > > | |
> > > | |
> > > | +-------------------------+|
> > > | | br-int ||
> > > | +----+-------------+------+|
> > > | | | |
> > > | +--v-----+ +---v----+ |
> > > | | geneve | | geneve | |
> > > | +--+-----+ +---+----+ |
> > > | | | |
> > > | +-v----+ +--v---+ |
> > > | | IP0 | | IP1 | |
> > > | +------+ +------+ |
> > > +----------+ eth0 +-----+ eth1 +---+
> > > +------+ +------+
> > >
> > > Also, we don't want to bond eth0 and eth1 into a bond interface and then
> > > use bond's IP as VTEP endpoint.
> > >
> > > Thanks in advance,
> > > ~Girish
> > >
> > >
> > >
> > >
>
> > _______________________________________________
> > discuss mailing list
> > discuss at openvswitch.org
> > https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
>
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>too, I can share that if it helps.
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