Wireshark-bugs: [Wireshark-bugs] [Bug 10280] Frame Relay dissector doesn't handle X.25-over-Fram

Date: Fri, 10 Oct 2014 20:27:22 +0000

Comment # 8 on bug 10280 from
What I have been able to determine from the traces taken, is that the complete
X.25 packet is stripped of it's Preamble and Frame Check Bytes, then
encapsulated with a 2-Byte FR header and a 2-Byte FCS trailer.
Our (FR) customer uses it's own Motorola Vanguard devices to present us with a
FR packet. Vanguard claims to use the Annex-G protocol, but the only reference
to that I have been able to locate in the ITU Recommendation X.25 (10/96) and
those do not make sense to me.


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