[Info-vax] Rethinking DECNET ?

[glen herrmannsfeldt]

Johnny Billquist <bqt at softjar.se> wrote:
> On 2014-09-02 17:44, JF Mezei wrote:
>> On 14-09-02 11:14, Bill Gunshannon wrote:

>>> TCP/IP has never "pretended" to be anything OSI.  Some people have
>>> tried to shoehorn it into the 7-layer Model

>> The 7 layer model is not really specific to "OSI". It is a generic
>> breakdown of networking functionality which was used in building the OSI
>> networking stack, allowing each vendor to test compatibility of each layer.
 
> No. The 7 layer model is specifically the OSI model. There is no 
> universal rule that you have to have 7 layers, or what should be in each 
> one of them. When we talk about the "7 layer model" we are explicitly 
> talking about the OSI model.

As I remember the story, there was disagreement with some wanting
eight and some six, so they compromised on seven.

The idea of layers is more general, and the lower layers tend
to be pretty obvious. The higher ones not so obvious. 

-- glen