The ftp utility can transport packets between replicas. On the sending end, the MultiSite administrator or a script creates and compresses the packet, and uses ftp to transfer the file to a location that is accessible by MultiSite administrators at other sites. Scripts at receiving sites poll the drop site, looking for any new files. When new files arrive, the scripts retrieve them using ftp, decompress them, and process them.

  • Transport mechanism is well understood and widely available.
  • More reliable and efficient than electronic mail.
  • Use of a drop site is required.
  • Polling of the drop site is required.
  • More complicated to implement, because of the interactive nature of the ftp utility.
  • More administration is required because a third system (the drop site) is used.