Does cisco 3750e, 4948, 6500 switches support gre+ipsec ????
No problem, glad to be of help.
I am pretty sure that neither the 3750E or 4948 support that. I was not so sure about the 6500 but when I look at the Feature Navigator and the Config Guide for the 6500 I do not see them as options for the 6500 either. So believe that the answer is that none of these platforms support gre+ipsec.