The biggest thing we ran into was no support of spanning-tree on the FEX's. The way we are setup, being STATE government, our agency controls the network up to the FEX port. Beyond that, the agency's were in control of what they plugged into our FEX ports. -----Original Message----- From: NANOG [mailto:nanog-bounces@nanog.org] On Behalf Of Herman, Anthony Sent: Monday, February 02, 2015 11:17 AM To: nanog@nanog.org Subject: Cisco Nexus Nanog, I would like to poll the collective for experiences both positive and negative with the Nexus line. More specifically I am interested in hearing about FEX with N2K at the ToR and if this has indeed made any impact on Opex as well as non-obvious shortcomings to using the fabric extenders. Also if anyone is using any of the Nexus line for I/O convergence (FCoE) I would be interested in hearing your experience with this as well. Thank you in advance, -A