Wireshark-dev: [Wireshark-dev] ISIS ISO

From: Dario Lombardo <dario.lombardo.ml@xxxxxxxxx>
Date: Thu, 26 Feb 2015 12:06:55 +0100
I've found an undecoded byte in the ISIS dissector. Before submitting a patch, I usually check with the reference standard (RFC, or others) the correctness of what I found.
I found

http://1.bp.blogspot.com/-9_nvv3M8ToU/T0-QsqCGc3I/AAAAAAAAAsI/YcBnXq2mkQI/s1600/pdu+format+ii.PNG

Does anyone have a reference documentation about PDUs that can share, where I can check that info (a more authoritative source than blogspot :))?

Thanks
Dario.