Re: Request for link-layer header type (XRA)

[Bruno Verstuyft <bruno.verstuyft () gmail com>]

Hi,

we are putting the last hand to the Xra header specification.
The specification will be put on
http://www.xra31.com/xra-header
when completed.

Best Regards,

Bruno

2017-10-13 19:13 GMT+02:00 Guy Harris <guy () alum mit edu>:

> On Oct 13, 2017, at 1:30 AM, Bruno Verstuyft <bruno.verstuyft () excentis com>
> wrote:
>
> > at Excentis we are developing a DOCSIS 3.1 RF sniffer (XRA-31). Packets
> are saved in pcap format with an XRA header. This is a pseudo header that
> contains extra information on the sniffed DOCSIS packets, e.g. the MER
> (modulation error rate), SID on which the packets was sniffed, ...
> > Is it possible to obtain a link-layer header type for this pseudo-header?
>
> Yes.
>
> You will have to give a detailed and complete specification for the
> pseudo-header.  You can either provide a URL for it, or can provide a
> description that we can turn into a specification hosted on tcpdump.org,
> such as the ones here:
>
>         http://www.tcpdump.org/linktypes/
>
> Presumably what immediately follows the pseudo-header is a DOCSIS MAC
> frame, as described by the DOCSIS 3.1 MAC and Upper Layer Protocols
> Interface Specification (or whatever that specification is called for
> DOCSIS 3.1).
>
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