In message <OF5327C1ED.1533FA78-ON87257324.005240EA-88257324.00264C02 at us.ibm.co m>,Shirley Ma writes: >Set default as 4 (2K) is more proper than 1(512?). All HCAs support 2K = >at >least now. dont some devices perform better with 1k mtu's? in particular, any device that suffers from the 'tavor quirk'.