Hello again,
In order to help everyone to give a try to this new piece of software, I just
added an example script
which will create a small basic network using linux namespaces, and run pimbd
on each namespace such
that you can see multicast routing actually happening.
The topology is really
Le 19 août 2015 à 13:53, Juliusz Chroboczek j...@pps.univ-paris-diderot.fr
a écrit :
The assumption is that the user will want to receive traffic from the
ISP. To do so, it needs to subscribe first (e.g. using MLD) on one of
the WANs. One problem is that you don’t know which WAN. The
Could you please explain what problem you're solving with the SSMBIDIR
extension?
SSBIDIR is not very different than BIDIR. It still uses one single
forwarding tree,
Thanks for the explanation.
So what happens when there are multiple default routes?
What problem does the proxying business
Le 19 août 2015 à 13:31, Juliusz Chroboczek j...@pps.univ-paris-diderot.fr
a écrit :
Could you please explain what problem you're solving with the SSMBIDIR
extension?
SSBIDIR is not very different than BIDIR. It still uses one single
forwarding tree,
Thanks for the explanation.
Le 19 août 2015 à 12:37, Juliusz Chroboczek j...@pps.univ-paris-diderot.fr
a écrit :
I am pleased to announce the public release of pimbd, the PIM
implementation that was demonstrated during the last Bits and Bites in
Prague.
I've now looked at it, and it's looking good to me. It's
Am 19.08.2015 um 13:31 schrieb Juliusz Chroboczek:
What problem does the proxying business attempt to solve? And what does
it use TCP for?
And what about that?
You need to tell the ISPs (via IGMP / MLD joins) which (global) MC groups
someone in the net is interested in, so you need to
The assumption is that the user will want to receive traffic from the
ISP. To do so, it needs to subscribe first (e.g. using MLD) on one of
the WANs. One problem is that you don’t know which WAN. The solution
used here is to subscribe on all WANs.
Sorry if I'm being dense -- but does that
Both of these techniques makes use of a metric in order to decide which
one is the ‘best’ router to forward some packet.
Perfectly clear. The unicast routing protocol needs to communicate the
metric to the PIM daemon, and the kernel priority is a convenient place to
put it.
Thanks, Pierre.
I am pleased to announce the public release of pimbd, the PIM
implementation that was demonstrated during the last Bits and Bites in
Prague.
I've now looked at it, and it's looking good to me. It's roughly the size
of babeld (10kloc), the code looks reasonably clean, and there appears to
be
So this is to choose between identical routes. Why is this needed?
I have no idea. You'll have to ask Pierre.
(And I'd appreciate an explanation myself.)
*clearing throat* :)
Here is my humble understanding as a multicast non-expert.
PIM makes an extensive use of RPF (Reverse Path
On Tue, 18 Aug 2015, Juliusz Chroboczek wrote:
(If you test this with Babel, you need to set reflect-kernel-metric true
What does that do?
[...]
So it takes whatever metric it came up with and sets the metric as kernel
priority?
That's right.
So if there is a shorter prefix that has a
So this is to choose between identical routes. Why is this needed?
I have no idea. You'll have to ask Pierre.
(And I'd appreciate an explanation myself.)
-- Juliusz
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On Tue, 18 Aug 2015, Juliusz Chroboczek wrote:
(If you test this with Babel, you need to set reflect-kernel-metric true
in babeld's config file; Pierre tells me that this is done automatically
by hnetd. I'll make some refinements to the reflect-kernel-metric code,
and make it the default in
I am pleased to announce the public release of pimbd, the PIM
implementation that was demonstrated during the last Bits and Bites in
Prague.
Excellent news, Pierre, automagic site-local multicast would be a great
feature for Homenet. I'll try it out as soon as it migrates into an
OpenWRT
(If you test this with Babel, you need to set reflect-kernel-metric true
What does that do?
[...]
So it takes whatever metric it came up with and sets the metric as kernel
priority?
That's right.
So if there is a shorter prefix that has a lower metric, this will be
chosen over a longer
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