you sure? well, OK, I actually braved my garage and dug out my old text Business Telecommunications by Sanford Rowe. This is the one that hooked me into networking as opposed to PC support 15 years ago. I vaguely recalled SNA as being nine layers, but I must have confused that with the nine bits in an EBCDIC character.
In any case, there it is - OSI and SNA side by side. Wow it's been a while. Interesting the way the two organizations pictured how data communications works. Wonder if Howard has any comment as to the relative merits of either perception? Another aside, and it has been a very long while since I read this, so I can't validate either its accuracy or my memory, but at one time the largest seller of "OSI compliant" gear in the world was IBM. Probably due to their selling into the US Govt GOSIP market. Tanks for the memories. Chuck -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Monday, December 10, 2001 8:56 AM To: [EMAIL PROTECTED] Subject: Re: Does session layer protocol use IP address ? [7:28378] I was told that there are 7 layers in the OSI model (from a guy who worked on this stuff back in the early 80's) only because IBM's protocol had 7 layers at the time, and OSI had 6. They added the session-layer to make it seem like a viable model. True story. :) Steve Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=28738&t=28378 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
