I'm trying to enable jumbo frames (either 4000 or 9000) to speed up backups, disk access to NAS, etc. I'm currently using a DS213+. I'm planning on purchasing a 414+ sometime in the near future. All of my switches (Linksys LGS308P's and LGS318P) have enabled jumbo frames selected. Anytime I try to access work email or the student's address, we can't.