[Sumover-tech] How to run a multicast node

[Marc Manthey]

> Hi Marc,
>
> I wasn't clear if you needed IPv6 multicast or just IPv4?

hi Piers, doug , all

sorry for the delay , i mean ip6 though:)


> http://openvpn.net/ can provide for connectivity of ipv4 and 6
> multicast - Though you could always just run AG in unicast mode.
> However with openVPN if you want to provide connectivity to other
> hosts then you will need some sort of igmp/mld proxy or router - the
> mrd6 would provide router functionality.

yes , thats what i found out,

it looks like  "mrd6 " is even working with  linksys WRT54g or Asus WL  
500 Premium

i just had some problems  because it needs a  special library

mrd6: can't load library 'libuClibc++.so.0'

libuclibc++_0.2.2-7_mipsel.ipk

http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/libuclibc++_0.2.2-7_mipsel.ipk

but i will dig into this , looks like a VPN thingy.....

> Another approach could be use mobile-ipv6 and this:
> http://www-r2.u-strasbg.fr/~jelger/MLD/MLD_Proxy_Main.htm
>
> Things also depend on how you're planning on connecting to the
> multicast network and whether you're permitted to peer with it
> directly - if so you could just set up a tunnel and then run an IPv6
> multicast router (eg mrd6).

I will able to get multicast connectivity from another
network because the Pop from my tunnelbroker sixxs has no connection
to the m6bone. <http://www.sixxs.net/pops/easynet/>


> If not you need to run an MLD proxy - it's
> not clear whether mrd6 provide MLD proxy functiionality - YOu'd have
> to look at it more closely yourself.
>
> There appears to be an oldish IGMP proxy here:
> http://sourceforge.net/projects/igmpproxy
> Where seems to be available as a package in openwrt:
> https://dev.openwrt.org/browser/packages/net/igmpproxy


>> <http://beacon.dast.nlanr.net/>    ?
>
> The AG3.x Venue client has a built-in beacon, i.e. button on the  
> VenueClient toolbar.
>
> The NLANR/DAST beacon project is no longer being developed, while  
> dbeacon is. Many AccessGrid sites run both.

ok, thanks!!

>> any insights would be greatly appreciated
>
> I often use the tool 'mtrace' to determine which hop in the  
> multicast route is broken, I suspect the FreeBSD version of mtrace  
> could be build on MacOSX.

thats  the tool what i found in ssmping , great to know, thanks!!


thanks for your time and your helpful links


Marc


> Cheers,
> Doug
>



> Piers.
>
>
> On 4/9/08, Marc Manthey <marc at let.de> wrote:
>> hello doug , piers , lassie, all ;)
>>
>> since i  could successfully join accessgrid via ipv4
>> and audio and video seems working on osx ppc,
>>
>> i am currious how i could set up multicast...
>>
>> ok, here is what i have,
>>
>> i have a wrt54 with "aiccu" running /sixxs authentification tool,  
>> thats
>> where i got my ipv6 connectivity
>> "radvd " advertises the prefixes in my network an i have ipv6 on  
>> all of my
>> 3 machines. hurray
>>
>> BUT
>>
>> From what i read -  i need a IGMP/MLD  kinda proxy /routing  
>> software  on
>> the host that terminates
>> my tunnelendoinf , so my router , to make it possible that one of my
>> machines
>> with accessgrid installed could join the multicast session is this  
>> correct
>> ?
>>
>> is that a recomendet tool ?
>>
>> https://dev.openwrt.org/browser/packages/ipv6/mrd6/Makefile
>>
>> how could the "multicast beacon " whats installed in the node could  
>> get
>> his multicast information from ?
>>
>> i´ve set up a "dbeacon" on my machine
>> <http://stattfernsehen.com/matrix>
>> its emty since i have no multicast routed yet ,
>>
>> but whats the difference between mine and  the accessgrid beacon
>>
>> <http://beacon.dast.nlanr.net/>    ?
>>
>> any insights would be greatly appreciated
>>
>> regards
>>
>> Marc
>>
>> --
>> Les enfants teribbles - research and deployment
>> Marc Manthey -  Hildeboldplatz 1a
>> D - 50672 Köln - Germany
>> Tel.:0049-221-3558032
>> Mobil:0049-1577-3329231
>> jabber :marc at kgraff.net
>> blog : http://www.let.de
>> ipv6 http://stattfernsehen.com/
>>
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