Disable browse thread on print server so it will not notify other print servers
of the existance of your printers:
Hive: HKEY_LOCAL_MACHINE
Key: System\CurrentControlSet\Control\Print
Name:
DisableServerThread
Type: REG_DWORD
Value: 1
Related:
Q181734 –
Windows NT Print Browsing Architecture.
Q131902 –
Printer Browse Thread May Cause Extensive Network Traffic.