For many people eliminating L2 switching and building on top of a L3 network is a good thing, especially if you are using BGP as the control plane.
I'm not sure I follow the two routers with 40GE interfaces if you are just building L2 domains to interconnect people. Phil On 1/20/15, 8:04 AM, "Marian Ďurkovič" <m...@bts.sk> wrote: >On Mon, Jan 19, 2015 at 09:37:35PM -0500, Phil Bedard wrote: >> I think in fairly short order both TRILL and 802.1AQ will be depercated >>in >> place of VXLAN and using BGP EVPN as the control plane ala Juniper >> QFX5100/Nexus 9300. > >We also evaluated VXLAN for IXP deployment, since Trident-2 introduced HW >support for it. But VXLAN does *not* create a network for you, it relies >on >some existing underlying IP network, on top of which VXLAN creates >stateless >tunnels. > >By using TRILL, we could connect 4 switches into a ring (or any other >reasonable topology) and have a fully functional network with >shortest-path >"routing" of L2 packets. > >With VXLAN, we'd need at least two additional IP routers with bunch of >40GE interfaces to perform the functions TRILL supports out of the box. > >Regards, > > M. > >
