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
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