[ovs-discuss] Scalability Questions in High-Density Virtualisation Environments

[Nicky Fatr]

Yes, VXLAN tunnel header is a good proposal, but for control plane
there is serve limitation: it depend on physical network multicast for
MAC learning. In OVS, central ovsdb controlled MAC address propagation
is a better choice.

On Wed, Sep 7, 2011 at 9:09 AM, Justin Pettit <jpettit at nicira.com> wrote:
> On Sep 7, 2011, at 9:01 AM, Nicky Fatr wrote:
>
>> I don't think that TRILL/802.1AQ L2 over L2 is a good option for large
>> scale deployment. L2 over L3 instead is more scalable, eliminating
>> comlexity of physical network.
>>
>> maybe we can expect L2 over UDP in some future release, for UDP is
>> more friendly than GRE in some networking configuration.
>
> You can already do L2-over-L3 with CAPWAP.  It doesn't support a configurable context identifier (key), but a patch has been provided by Valient Gough and Simon Horman that adds it.  We're also looking at supporting VXLAN, which was recently announced:
>
>        http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-00
>
> --Justin
>
>
>