Re: [NEED HELP] forwarding multicast pakets

From: Alexander Clouter (alex_at_digriz.junk-this.org.uk)
Date: 05/13/05 

Date: Thu, 12 May 2005 22:26:45 -0000

Hi,

On 2005-05-10, nouknouk <nouknouk@gmail.com> wrote:
> Hi,
>
> [snipped]
>
> I'm using SMCRoute 0.92 with those commands :
> # smcroute -d
> # smcroute -a eth0 192.168.1.2 224.10.10.12 eth1
> # smcroute -a eth1 192.168.2.2 224.10.10.12 eth0
>
> If I look at the Mroute tables ( # ip route show ), I have got my two
> routes :
> (192.168.2.2, 224.10.10.12) Iif: eth1 Oif: eth0
> (192.168.1.2, 224.10.10.12) Iif: eth0 Oif: eth1
>
> But If I launch my multicast application for doing some test, I can see
> with tcpdump that the incoming multicast traffic (224.10.10.12,
> received either on eth0 or eth1) isn't forwarded on the other network
> card.
>
Exactly what I saw when cursing with my set. Whats the output from:

# ip mroute show

and also:

# cat /proc/net/ip_mr_vif

> Could you help me ?
>
adding 'up ip link set eth0 multicast off' to /etc/network/interfaces for the
interfaces where I did not want to see multicast traffic and also a good old:

# /etc/init.d/networking restart

helped no end, of course followed by your smcroute commands.

> Many thanks in advance.
>
have fun, streaming DVB data is good stuff.

Cheers

Alex

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