Re: Adding a new OSI layer

Hi Josef,

It's my understanding of the concepts of IOS/OSI Layers that this
cannot, should not and must not be done: each layer should be
autonomous.
Then we share the same understanding. But things become complicated in
terms of heterogeneous links. Just take a look at 802.21 - they
propose a cross-layer approach. The classical ISO/OSI model is not
optimal for everything...


Besides: you cannot add to something that hasn't been created yet: when
the session layer has created its PDU it will hand it to the Transport
layer which will then stick its own header/trailer to it.

| app. header | app data |

prepend with layer 5 header:

| l5 header | app. header | app data |

choose an appropriate transport layer protocol within layer 5:

| l4 header | l5 header | app. header | app data |

continue regularly with layer 3...


Anyway, I'm not proposing this architecture. In fact, I also think its
not a good idea.
I'm just spending some thoughts on how you could implement it...

I guess that it should belong to the OS (kernel).
Maybe that small parts of the session layer should go into the kernel,
but I don't think that the bulk of it needs to.


Thanks for your inputs.

Christian

.

Relevant Pages

  • Re: Another Draw Layer?
    ... To work more effectively within headers and footers, ... the drawing layer will disappear. ... just as graphics in a floating wrapping style also disappear in both those ...
    (microsoft.public.word.drawing.graphics)
  • Re: stationary template logo help
    ... anchor the picture in the header, then drag it to wherever you want. ... as it will be a separate layer. ... Hopefully this looks like a page with a logo in the ... > doing it wrong) I force it to the right corner by moving the left margin ...
    (microsoft.public.word.pagelayout)
  • Re: Graphic fades out after inserting into Header
    ... Note, too, that occasionally a graphic in the header will appear dimmed even ... Microsoft MVP ... > in the text layer of the document. ... > to Format Picture. ...
    (microsoft.public.word.docmanagement)
  • Re: Georeferencing Quickbird Image to DEM
    ... 10m DEM that I have projected in WSG 84. ... whatever reason I can't seem to define the header correctly. ... I believe ENVI's layer stacking will not work if the layer are not at ... As for the projection in ArcGIS, check first in ArcCat what the ...
    (comp.infosystems.gis)
  • Re: packet anlayzing
    ... am trying to analyze the packet i got through a simple peer to peer ... masseges and i wont to view the informations of the layer 3 and layer 2 ... The MAC address appears in the Ethernet header, ... receiving the packet through the Socket, then you can adjust the parameters ...
    (microsoft.public.dotnet.languages.csharp)