julian403
Full Member level 5
Hello, reading the RFC 2516 documents which describe PPPoE it took my attention the frame
Where we can see that the PPP frame is encapsulated in the payload ethernet. But there are missing the preamble and the SFD header. Why that? the preamble and SFD are totally necessary to the synchronization in other way the ethernet port (That we can say that the the RF 1:1 transformer there is a flip flops types D in series which form the register and which need the sincronization to works and for that I means the clock)
so, Why in an RF documents is missing something so important? or really really they are not there in the frame for some reason? it they are not in the pictures due it's not data?
Please, this is the documents where you can read it:https://datatracker.ietf.org/doc/rfc2516/?include_text=1
and it says this:
Where we can see that the PPP frame is encapsulated in the payload ethernet. But there are missing the preamble and the SFD header. Why that? the preamble and SFD are totally necessary to the synchronization in other way the ethernet port (That we can say that the the RF 1:1 transformer there is a flip flops types D in series which form the register and which need the sincronization to works and for that I means the clock)
so, Why in an RF documents is missing something so important? or really really they are not there in the frame for some reason? it they are not in the pictures due it's not data?
Please, this is the documents where you can read it:https://datatracker.ietf.org/doc/rfc2516/?include_text=1
and it says this: