TMUP 145: Using Mac and Windows together
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This show is a member of Friends In Tech
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Generally these topics from Bart are very helpful. However, while he did provide a decent overview of how the OSI layers work together, he frequently referenced them incorrectly.
There is no OSI Layer 0, for example. He also kept referencing Layer 2 incorrectly. Layer 2 handles mostly media access and framing — not routing. Layer 3 handles the routing, via different routing protocols, usually OSPF (Open Shortest Path First), but there are several others and different implementations. I won't even get into the Layer 4 issue.
Normally I don't comment on something like this, but I feel it's important enough to bring up.
It almost sounded like he was also mixing the TCP/IP Model with the OSI 7 Layer model (1 -7, not 0-6). They are different.
For clarification and for a fun read, check out this explanation on Routergod.
http://routergod.com/ccnabootcamp/osi.html
Comment by one1step1 — August 27, 2008 @ 10:59 am
Thanks for the feedback. I'm sure Bart will respond himself. I don't think he was trying to explain the OSI layers in the cynical sense. Thanks for the comments
Comment by typicalmacuser — August 27, 2008 @ 11:46 am
Hi one1step1,
If I mentioned layer 0 that was a definite mistake. In hind-sight I should probably have used the names rather than the numbers, possibly less confusing though a lot more of a mouthful for me! I started by saying I'd be talking about the 4 layer TCP/IP model. I did mention OSI once, but only to say that I wouldn't be talking about it because it's far too complex and really just used academically.
I'm pretty sure I kept the layers straight for most of the segment, if I didn't then I can only apologise.
Bart.
Comment by Bart Busschots — August 27, 2008 @ 5:28 pm
Ah, well, then that might make more sense, except for the layer 0 referrals.
Perhaps I missed the intro when you noted that. I will go back and listen to it again when I get a chance. I probably should have before I commented. Otherwise, nice work at explaining it. Odds are I jumped the gun and missed the part where you mention the TCP/IP model. Sorry about that! I tend to think in the OSI model too often I guess.
Comment by one1step1 — August 27, 2008 @ 5:33 pm
HI, Bart
I always enjoyed listening to your talks. Is there any way I can get the show notes. Particulalry the series on terminal tips. I often listen to TMUP while I am driving. Thanks for any help-chin
Comment by chin — September 2, 2008 @ 7:13 pm