Hi, I was told by an SE that the WS-X6748-GE-TX only supports ethernet jumbo frames in IOS and not catOS. Trying to verify this but cannot find a diffinitive answer on CCO. Anyone have a link that clarifies this? Thanks Dave -- David Madland CCIE# 2016 Sr. Network Engineer Qwest Communications 612-664-3367 "Emotion should reflect reason not guide it"