[clug] Chromecast on a Billion router

Mike Carden mike.carden at gmail.com
Mon Jun 16 02:23:31 MDT 2014

Okay, so I ran the test from a wired host to a wireless host, then from the
wireless host to a wired host. In each case, the one running:

$ ./multicast-test --recv

Would only see this:

[info] listening on for multicast packets
[err]  timeout waiting for message

...without seeing any of the five or so messages sent by the --send host.

So I guess it's time to look at the OpenWRT compatibility of some modern
wireless routers. Thanks for that Jeremy.


On Mon, Jun 16, 2014 at 11:39 AM, Jeremy Kerr <jk at ozlabs.org> wrote:

> Hi Mark,
> > I recently acquired a Google Chromecast (thanks to Chris Smart) and
> > I'm having issues with it on my home wireless network. Again thanks
> > to Chris, I have swapped out the Chromecast for a new one, but that
> > didn't fix it.
> [...]
> > Ideally I would love to hear from someone who has divined the
> > necessary incantation to get my router working happily with a
> > Chromecast, but failing that, recommendations for a solid ADSL modem
> > / router / wifi AP / VOIP box that would usefully replace the
> > Billion.
> Wow, this brings me back.
> I had a 7401-VGP a while ago, and found that its multicast support was
> pretty lacking. I'd find that it would forget about multicast group
> subscriptions after some amount of time. Here's a little test:
>  http://ozlabs.org/~jk/tmp/multicast-test.c
> Back in 2008, I filed a support ticket for the issue (including this
> testcase), but billion denied it was a problem. They couldn't suggest
> any settings that might address the issue either - we got the same
> behaviour with IGMP snooping both disabled and enabled.
> If your problem is due to the dropped multicast subscriptions, you may
> have to replace the billion device. I'd suggest going with something
> OpenWRT based; but that probably means a separate modem, router/AP and
> VoIP endpoint.
> Cheers,
> Jeremy

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