" Tell me - when was the last time in your memory where you thought something like "Oh, this is operating at layer 5 instead of layer 6 or layer 4"?"
Frequently when dealing with some application 'developers' when troubleshooting connectivity or performance issues. Many don't seem to understand that Mapped drives via NET USE and other RPC/IPC type connections are NOT at the NETWORK Layer 3 level, and figure if PING works then everything they build for the data transport should too... had this argument a few times in the past regarding DCOM and dcomcnfg used on heterogenous networks ( VSAT, Frame-Relay, & Dial-ISP VPN all at once ) Outlining the FUNDAMENTALS of the OSI model HELPED the developers reference what was taking place and why, and where things could go wrong, even if it was not 100% accurate as a strict guideline. YMMV Erik Goldoff IT Consultant Systems, Networks, & Security ' Security is an ongoing process, not a one time event ! ' -----Original Message----- From: Kurt Buff [mailto:[email protected]] Sent: Monday, May 31, 2010 2:23 AM To: NT System Admin Issues Subject: Re: Applicability of the OSI model (was: Big Changes) Sigh. Newtonian physics works to several 9's of accuracy, and is good enough for almost everything that humans encounter. That's a whole different beast than the OSI stack, where, unless I'm thoroughly confused, the only thing that's even close to widely used that somewhat follows that model is X.400. Tell me - when was the last time in your memory where you thought something like "Oh, this is operating at layer 5 instead of layer 6 or layer 4"? Kurt ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
