Paul Gilmartin wrote:

I don't understand the architecture here.  Is SNA a layer under NJE?
How about VTAM?

SNA is indeed a lower layer than NJE. VTAM is a subsystem that implements SNA (e.g., LU2, LU6.2) and non-SNA (e.g., LU0) under z/OS, z/VM, and z/VSE -- not a protocol.

Why has TCP/IP so surpassed SNA?


SNA is/was proprietary while TCP/IP is/was open.

--
-----------------------------------------------------------------
| Edward E. Jaffe                |                                |
| Mgr, Research & Development    | [EMAIL PROTECTED]    |
| Phoenix Software International | Tel: (310) 338-0400 x318       |
| 5200 W Century Blvd, Suite 800 | Fax: (310) 338-0801            |
| Los Angeles, CA 90045          | http://www.phoenixsoftware.com |
-----------------------------------------------------------------

----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO
Search the archives at http://bama.ua.edu/archives/ibm-main.html

Reply via email to