[ovs-dev] [PATCH ovn v3 07/10] ovn: Add tunnel_key concept to Bindings table, assign in ovn-northd.
Justin Pettit
jpettit at nicira.com
Wed Apr 29 16:22:48 UTC 2015
> On Apr 29, 2015, at 6:34 AM, Russell Bryant <rbryant at redhat.com> wrote:
>
> I wonder how realistic it would be to have 65k ports and hit this as a
> limit. If your deployment has many containers in each VM, it seems like
> we could hit that much more quickly than traditionally seen before.
I had the same thought around containers. I think we need to assume we'll hit 65k ports in the whole system pretty quickly.
> If a protocol can fit a whole UUID in tunneled packets, I suppose we
> could optionally switch to using the logical port UUID later?
The whole UUID seems like a lot of overhead. I'll start a new thread to discuss how we want to handle end-point identification. If we did a schema like use a 24-bit logical network id and a 16-bit logical port number that should scale fine. Even if we do a good job with broadcast suppression, 65k ports in a subnet is still probably pushing practical limits.
I'll get that new thread started.
--Justin
More information about the dev
mailing list