Wireshark-dev: Re: [Wireshark-dev] Roofnet Dissector
From: Nicola Arnoldi <[email protected]>
Date: Mon, 11 Dec 2006 09:40:40 +0100
Hello everybody.
I send you as an attachment a sample capture file of a TCP session
running over a roofnet wireless mesh.
(zipped version of a tcpdump capture file obtained with wireshark)

Obviously, Wireshark decodes only the MAC headers, treating the rest as
'data', as it doesn't now how to dissect...

Thanks for any support!!!


Nicola

On dom, 2006-12-10 at 05:39 +0100, Sebastien Tandel wrote:
> Hi,
> 
>    I've looked at the pdf you sent. May you define further the following
> fields :
> 
> - type (are there any fixed values?)
> - nlinks : this field is used to tell how many fields there will be in
> the variable length header. Right?
> - next : semantic ?
> - flags : bit X means ... ?
> - Query Dst : IPv4 ?
> 
> Is this header used for the purpose of an improved source routing?
> 
> Can you send me a sample capture file?
> 
> thanx,
> Sebastien Tandel
> 
> 
> Nicola Arnoldi wrote:
> > Here you will find informations for designing a dissector for the
> > Roofnet Layer 2.5 routing protocol for wireless mesh network of
> > http://pdos.csail.mit.edu/roofnet/.
> >
> > The Layer 2.5 works as follows.
> >
> > - Inside the MAC 802.11 frame a 1500 byte datagram is located.
> >
> > It consists of a 400 byte header and a 1100 byte data field. (see
> > attachment for a pictorial representation)
> >
> >
> > The 400-bytes header contains a lot of informations. Some of them are
> > fixed, such as the protocol version and other stuff (160 bytes).
> >
> > The variable-length part of the header contains routing information of a
> > multi-hop transmission. More specifically, those bytes contain the IP
> > addresses of the hops involved in the route of the current datagram.
> >
> > So, 1100+400 bytes form the payload of Layer 2 MAC protocol.
> >
> > In the data field a standard UDP or TCP datagrams may be carried.
> >
> > I hope everything is clear.
> >
> > If you need a sample capture just tell me.
> >
> > Regards
> >
> > Nicola Arnoldi
> >
> >
> > On ven, 2006-12-08 at 15:16 -0800, Stephen Fisher wrote: 
> >   
> >> On Thu, Dec 07, 2006 at 10:22:26AM +0100, Nicola Arnoldi wrote:
> >>
> >>     
> >>> If you're into wireless mesh networking stuff, you've probably heard 
> >>> about Roofnet, an MIT project with WMNs. Well, Roofnet introduces a 
> >>> 2.5 OSI Layer, with certain headers. Anyone designed a dissector for 
> >>> Roofnet or is anyone interested into it?
> >>>       
> >>> If so, please contact me, I will be happy to provide the packet 
> >>> structure...
> >>>       
> >> Feel free to send a link to the packet structure and a link to a sample 
> >> capture file to the list.  Someone may have time to work on a dissector 
> >> for it.  If you don't hear anything back, add it to the wish list (again 
> >> with the structure and a capture file) at 
> >> http://wiki.wireshark.org/WishList
> >>
> >>
> >> Steve
> >> _______________________________________________
> >> Wireshark-dev mailing list
> >> [email protected]
> >> http://www.wireshark.org/mailman/listinfo/wireshark-dev
> >>     
> >> ------------------------------------------------------------------------
> >>
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> >> [email protected]
> >> http://www.wireshark.org/mailman/listinfo/wireshark-dev
> >>     
>    

Attachment: tcp_roofnet.dump.zip
Description: Zip archive