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I believe OSI was at least as much corporate as it was governmental. And, like most corporate solutions it ended like it ended, with design by committee. IP o
by trasz 4y ago
I believe OSI was at least as much corporate as it was governmental. And, like most corporate solutions it ended like it ended, with design by committee.
IP on the other hand was neither, like much of successful technology.
As a side note, the OSI layers are useful as a mental model, but trying to maintain that separation in actual implementation is a poor idea; that’s one of the things IP got right: it doesn’t really match OSI layering, and does cut through layers when it makes sense.
- msla 4y ago> that’s one of the things IP got right: it doesn’t really match OSI layering, and does cut through layers when it makes sense. It doesn't implement the OSI layering model, in other words, even if you can almost make that model fit if you ignore the top couple layers and handwave vigorously the rest of the time. If you look, you can find a four-layer or five-layer TCP/IP model, but RFC 3439 has a section titled "Layering Considered Harmful" and it's clear that the IETF doesn't always think in terms of layers. https://datatracker.ietf.org/doc/html/rfc3439 https://datatracker.ietf.org/doc/html/rfc3439 Of course, none of that stops the Seven-Layer Model (blessed be its name) from being perpetuated as if it were an absolute.