Is it possible to do dynamically throttled UPDcast transmission? We need
to throttle the data flow to a Logic Innovations IP encapsulator (with
LI's documentation attached with their permission).
The udpcast mutlticast address is considered a single route to the IPE.
The IPE sends out flow-control messages (described in document) that
shows how many bytes are available for traffic for each route every 100
milliseconds in a multicastand comes from a user specified multicast of
its own. Attached is the LI document, again with the manufactures
permission. Also, you can contact Theo Aukerman, taukerman(a)logici.com
for any additional info.
I'm asking these questions because IF this is possible, then this would
be an almost complete framework for an open source Data-casting network,
and can be used for over the air data-broadcasting from any DTV
transmitter or any other system with null packets. I currently work as
an engineer for a TV station that does data transmission, but would like
to move to an open source model.
happy to found this tool, I've got my first big problem with it.
Using the multicast to clone a HDD to several Clients, the clients take
the MAC of the onboard NIC (NVidia nForce). After that, the original MAC
is gone and I'm not able to restore this.
This fact has been a little difficult to find. Cause I thought, the MAC
ist Part of the NIC, not of the HDD, which has been cloned. So how does
And even how can I overcome this?
Any Idea would be appreciated,
I would like to include ntfsresize into an initrd created by cast-o-matic. I compiled ntfsresize statically and uploaded the application to be included in the initrd. I'm pretty sure this is a busybox issue. ntfsresize appears in the initrd but I cannot execute it.
I am not very familiar with busybox so any help would be appreciated. Thank you in advance.
Technology Support Specialist
The School District of Beloit
I would thanks everyone involved in developping this fine software.
It took me a while to believe the throughput achieved by updcast and
how well works the multicast restoration option !
But despite enabling the "igmp snooping" option, i still didn't succeed
to configure my switch (an hp procurve 2524) to not broadcast the
multicast flow on all port that are up ( even on those where there's no
udp-receiver client running :-/ )
As i don't know much about IGMP and after reading here and there that
this functionnality is buggy on some switch implementation, would you
please help me debug this issue :-) (switch issue or configuration
As i can also test some cisco switch, would you please list switches
where the IGMP snooping functionality is known to work ?
Thanks in advance.
How do I remove my address from the distribution list?
IT Systems Developer
School of Computing, Engineering and Information Sciences
Newcastle upon Tyne