Talk:OSI model
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A search on Google (http://www.google.com/search?sourceid=navclient&q=%22The+physical+later+is+concerned+with+transmitting+raw+bits+over%22) shows that this page has paragraphs found multiple times accross the internet (right down to the space in 'a re' in the last paragraph). Whether this means its in the public domain, or that they are all stealing from the same source I am unsure. If its the former, something needs to be cited. - Eean
Much of it seems to be from http://www.btconline.net/~derrellh/OTI/OTI_Classes/CIS140/OSI_model/OSI%20model.htm. It seems highly doubtful that this is public domain. I've removed the content for now. --Stephen Gilbert
from user talk:MyRedDice
Here's my thinking:
First on OSI you'll notice the 7-long table with some examples of things at each of the 7 OSI levels.
You'll notice ethernet is on level 2 and 10BASE-T is on level one.
goto 10BASE-T and you'll notice that its said to be a "varient of ethernet",
PLEASE help me clarify how a variant of ethernet is on a DIFFERENT OSI level than it.
(see, i think that OSI categorization is just a loosely thrown together piece of ill-defined cruft) Anyway, maybe you can educate me
I think I can help. Ethernet is level two. But it depends upon level one: the physical layer. Thus you can run ethernet either on 10BASE-T cables, or on 10BASE2 cables, or on [[please respond to user_talk:hfastedge so that I dont have to constantly look at recent changes.
anyway, "you're just changing which variant of the physical layer it works on" that still doesnt address how "10BASE-T is a variant of ethernet" as mentioned in 10BASE-T.
- Have replied there - see new version of 10BASE-T :) Martin
- You almost got it right but you responded to user page instead of user_talk:hfastedge . ONLY when u respond to the talk page do you get a little * eg: Hfastedge (Talk*) allowing you to globally be aware of new talks. Finally, you've clearly introduced data within the article that is conflicting (within the confines of the article). I'm going to put the article on watch, and see if anyone interested finally (and solidly) gets it "right".
The confusion here is that Ethernet is both layer 1 and 2. 10BASE-T is just one implementation of layer 1 for Ethernet. It isn't a "variant", it's a specific implementation. --AMillar
i need some help, i gotta learn TCP/IP because i chose it as my written or studied language. this site is UNBELEVIABLY HELPFUL! but i need all the help i can get
just post, my email is suffering problems so i cant check it. :( :P -- Ck12233
I'm thinking that maybe I should add some of my comments at the end of Talk:Internet_protocol_suite#Confusing layers (about how the OSI model really divides things up in functional layers, and you shouldn't expect the actual dependency maps of real protocol suites to follow it slavishly) to this page; that will prevent a lot of confusion as to e.g. why BGP, which uses TCP, is at the network/internet layer.... Noel 12:40, 18 Sep 2004 (UTC)
Sometimes a layer 0 is introduced to refer to the physical medium the data is transported accros, eg. the copper or glass cabling itself. This is because strictly speaking the cabling does not belong to the osi model itself. [JP]
MPLS is considerd to be a switching techonology, i.e. layer 2. However it runs on other layer 2 technologies such as Ethernet or ATM, then why is it not considerd layer 3. Then again is what defines a layer 2 Protocol one that specifies the next hop in the path while layer 3 specifies the final destination.
Possibily could MPLS be considerd a sub-layer of Layer 2, so if MPLS ran over Ethernet there would be 3 sub-layers LLC layer, MAC layer and MPLS layer. -Vec 19 April 2005