We are having difficulty getting IBM Broadcom NetXtreme Gigabit Ethernet cards (driver ver. 9.56.0) to negotiate 1000/full with 4500 and 6500 Cats. Switch info:6509, s72033-jk9sv-mz.122-18.SXD6, X6748-GE-TX4506, cat4500-ipbasek9-mz.122-25.SG, 4548-GB...