IBM 3725 In Central Illinois

From: Ethan Dicks <ethan_dicks_at_yahoo.com>
Date: Sat Apr 22 11:21:28 2000

--- Dan Linder <dlinder_at_uiuc.edu> wrote:
> List,
>
> There is an IBM 3725 available... Just a large heavy blue computer.
 
> I'm also quite interested in what it is.

It is big, it is heavy, it is blue, but it isn't a computer. It's a
PU (Physical Unit) Type 4 as seen from an SNA network standpoint, and is
more commonly known as an FEP (Front End Processor) - Think of it as the
I/O interface for a mainframe.

This is the thing that a 3274 would talk to - that box we were discussing
here a few days ago. The CPU is a PU Type 5, the 37x5 is the PU Type 4,
the 3274 is a PU Type 2 and they all coexist happily in their own roles
on an SNA network. Each PU Type can initiate or resond to certain types
of network traffic; it's very hierarchical and structured.

-ethan



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Received on Sat Apr 22 2000 - 11:21:28 BST

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