Udpcast February 2008

udpcast@udpcast.linux.lu

9 participants
6 discussions

throttle output of udp-cast
by David Crider 23 Sep '08

23 Sep '08

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.

2 1

Big Problem with cloned MACs
by Pitt Leidner 21 Apr '08

21 Apr '08

Hi ML, 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 it come? And even how can I overcome this? Any Idea would be appreciated, TIA -- yours sincerely Pitt

5 15

Include ntfsresize into initrd
by Jeff Michels 03 Apr '08

03 Apr '08

Hello, 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. Jeff Michels Technology Support Specialist The School District of Beloit

4 3

multicast and igmp snooping how to ?
by roudoud0u＠free.Fr 20 Feb '08

20 Feb '08

Hi all, 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 issue ?) 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. Cheers,

2 1

subscriptiion removal
by Paul Atkins 18 Feb '08

18 Feb '08

How do I remove my address from the distribution list? Thanks Paul Atkins IT Systems Developer School of Computing, Engineering and Information Sciences Northumbria University Newcastle upon Tyne NE2 1XE 0191 2274659

1 0

Paul St.Denis is out of the office.
by pstdenis＠notes.cc.sunysb.edu 14 Feb '08

14 Feb '08

I will be out of the office starting 02/07/2008 and will not return until 02/18/2008. I will respond to your message when I return.

1 0

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Udpcast February 2008