求助

exerry

Dear All,
I encounter with a problem that it did not exist 1 week ago.
I have a cisco switch 3750 with c3750-ipservicesk9-mz.122-50.SE2.bin IOS that enabled sdpm prefer to routing mode.
I had not any problem with this switch until 1 week ago, biu from one wekk ago until now, I could not surfing internet.I can open google.com web site
I have not any problem with ping or other protocols for example FTP.
I have to say that I enabled cef on this switch, but problem is exist now.
Please help me.