FTP Issue

["Shrader, Patrick" <pshrader@xxxxxxxx>]

Folks,

Trying to debug an FTP server. I can FTP to an external site and start a
file transfer. A zero byte file is created on the Windows NT 4.0 server, but
no bytes are ever transmitted. 

Had the same issue last week with an internal server. I had previously had
my network wiring running through cheap router into a 3Com switch. When I
removed the router from the managed switch the FTP stopped working. Placing
the router back in-line fixed the problem. Now I see the same issue to this
external site. I know VERY little about managed switches. Could it be my
problem? Could the switch be affecting the traffic adversely?

Any hints would be appreciated.

Patrick