[vlc] Re: vlc and igmpv3

[Olivier Lourdais]

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Le lundi 14 Juin 2004 10:05, Francisco Cruz a écrit :
> A have configure my CISCO router to work under  PIM-SSM
> and igmpv3 (IANA address range 232/8).
>
>  When I using vlc under XP (0.7.2) and Linux (0.7.1) (fedora 2) to
> display the stream (for exmaple)
>
> udp://163.117.100.100@232.190.190.190:1234
>
> also I using a network analyzer (tcpdump and ethereal).
>
> vlc only send igmpv2 messages and NOT igmpv3 and not receive any stream,
> the source is in another LAN

I did some tests with VLC 0.7.2 (0.7.1 is supposed not to support 
source-specific multicast, iirc) under a Linux 2.6 kernel, and ethereal was 
showing IGMPv3 messages, as expected. (see 
http://www.via.ecp.fr/via/ml/vlc/200406/msg00068.html and 
http://www.via.ecp.fr/via/ml/vlc/200406/msg00069.html (PS : Linux kernel 
actually sometimes sux when seveal UDP (multicast) streams are using the same 
port number, thanks to Claudio Cavalera ;).

But even receiving IGMPv2 messages, an IGMPv3-aware router is supposed to 
translate them to IGMPv3 messages (as described in RFC-3376, section 7.3.2).
Are you sure your router is sending good PIM-SSM messages to its neighbors and 
is receiving correspounding multicast streams ?

Olivier Lourdais
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