Karl Reichert wrote: >> Jan Kiszka wrote: >>> Karl Reichert wrote: >>>> Jan Kiszka wrote: >>>>> Karl Reichert wrote: >>>>>> Hello, >>>>>> >>>>>> I have a question concerning RTcfg-frames. I couldn't completely >>>> understand from RTcfg.spec how these frames are looking like. I made >> two models >>>> and I think one of these is correct (see attachment). Which one? >>>>> The first one. RTmac frames have their own Ethertype (0x9021), and >> they >>>>> only contain discipline frames (like TDMA) or encapsulated non-RT >> frames >>>>> (see the vnic tunnels). RTcfg frames are just plain RT payload, like >>>>> frames issued by RT-applications. >>>> BTW, Ethereal, err..., Wireshark perfectly understands RTnet. =8) >>>> >>>> Jan >>>> >>> Thanks. Another question: Are those Frame Identifier Bits (B4..0) the >> same like the ID? It's little bit mistakable because they are 1 Byte (all >> taken from RTcfg.spec). >>> If not, what if the Frame Identifier for / filled with? >> I see the confusion: "Frame Identifier" may rather be called "Frame >> Type" so that "Frame Version" + "Frame Type" form the "Frame ID" (or >> just ID) as this byte is called later on. May may grab this information >> >from the textual description, but the naming can indeed be misleading. >> >> HTH, >> Jan >> >> >> PS: _Always_ reply to all... >> > Another question, maybe very simple but can't find it in the spec: How is > data send? Just as a plain/raw packet or is there also sth added like version > or type in the TDMA-Frame?
But that should be clear from the spec: plain Ethernet frames, no additional headers. Jan
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