You can see what we have at the SIX here - http://www.seattleix.net/topology.html Mike -- Michael K. Smith mksmith@mac.com On Jan 11, 2015, at 10:37 PM, Manuel Marín <mmg@transtelco.net> wrote: Dear Nanog community We are trying to build a new IXP in some US Metro areas where we have multiple POPs and I was wondering what do you recommend for L2 switches. I know that some IXPs use Nexus, Brocade, Force10 but I don't personally have experience with these switches. It would be great if you can share your experience and recommendations. There are so many options that I don't know if it makes sense to start with a modular switch (usually expensive because the backplane, dual dc, dual CPU, etc) or start with a 1RU high density switch that support new protocols like Trill and that supposedly allow you to create Ethernet Fabric/Clusters. The requirements are simple, 1G/10G ports for exchange participants, 40G/100G for uplinks between switches and flow support for statistics and traffic analysis. Thank you and have a great day. Regards