On 24/07/13 17:01, Olivier Benghozi wrote: > Hi Phil, > > what is the Cisco model & IOS? It's actually an Nexus 7009 running NX-OS. > > Did you create the vlan in the vlan database in your Cisco switch? :) Yep > > Maybe try switchport nonegotiate... No such command on NX-OS, there's no DTP.