Recommended L2 switches for a new IXP

Tue Jan 20 15:17:20 UTC 2015

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" <md at 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.
>
>  