Wireshark-bugs: [Wireshark-bugs] [Bug 7314] SDH support for wireshark.
Date: Thu, 7 Jun 2012 18:51:00 -0700 (PDT)

--- Comment #7 from Guy Harris <[email protected]> 2012-06-07 18:51:00 PDT ---
(In reply to comment #6)
> I was going to pretend that someone with may want to read SONET/SDH from a pcap file,
> so when I started implementing the dissector I didn't want to utilise anything ERF specific.

Presumably "from a pcap file" you meant "from a pcap file using a LINKTYPE_
value other than LINKTYPE_ERF or from a pcap-ng file where the interface(s)
carrying SONET/SDH traffic have a LINKTYPE_ value other than LINKTYPE_ERF", as
LINKTYPE_ERF encapsulates ERF records, complete with the extension headers.

> I'm doubtful as to ever finding a pcap file with SONET traffic though

Given that no LINKTYPE_ value has been assigned for raw SONET/SDH, you're
unlikely ever to see such a file until such a LINKTYPE_ value has been
introduced, and, if somebody proposes a LINKTYPE_ value for raw SONET/SDH on
tcpdump-workers, if the suggestion doesn't include a pseudo-header to give
information of the sort that appears in the Extension Header 5, I'll make that
suggestion myself.

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