TCP segment format

[Memitim]

On page 75 in the breakdown of the TCP segment, the code bits are indicated as being 6 bits, with the example code on page 76 being 011000, reinforcing it as being six bits. When I view a TCP segment in Ethereal, though, it shows eight possible bits: CWR, ECN-Echo, Urgent, Ack, Push, Reset, Syn, and Fin. Am I missing something?

[tsunamoro]

Hi Memitim,

look at http://en.wikipedia.org/wiki/Transmission_Control_Protocol#TCP_segment_structur e

Probably Ethereal (or Wireshark as it's called now) is updated to the last RFCs.

Bye.