On Mon, Aug 17, 2009 at 3:52 PM, Michael Di Domenico<mdidomenico4 at gmail.com> wrote: > Yes, for the IB card itself, not IPoIB > Why do you want to do it? (Do you know that even if the MTU of the link is 2K you can connect the QPs to use MTU of 1K between them?) Dotan