By default, all lines are configured to automatically try a telnet
connection if the first word in a input line is not recognized as a
valid command.  You can disable this by setting ``transport preferred
none'' on every line (con, aux and vty). For instance:


        sl-panix-1#conf t
        Enter configuration commands, one per line.  End with CNTL/Z.
        line vty 0 10
        transport preferred none


You can see the number of vty's currently configuered with ``show lines''

Also, you can suspend connect attempts with ^^ followed by ``x'', ie
shift-cntrl-6 x.

[It has been suggested that ``no ip ipname-lookup'' to turn off IEN116
helps. I think this is the default -jhawk ]