Hi, We connect two 6509 switches with 6704 10GE modules. However, we found 4 ports can not up at the same time. we checked the fiber links. GE sfp works well. Currently, the 6509s installed 1*6704, 1*6724-SFP,1*6748-GE-TX, 1*FWSM and 2*3000 AC power ...