Date: Fri, 3 Mar 1995 09:19:02 -0600 From: Mark Tinguely <tinguely@plains.nodak.edu> To: ajit@louie.udel.edu Cc: atn-group@mitre.org, freebsd-hackers@FreeBSD.org, slr@mitre.org, wollman@halloran-eldar.lcs.mit.edu Subject: Re: multicast pruning Message-ID: <199503031519.AA16567@plains.NoDak.edu>
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> In message <199503030019.AA29879@plains.NoDak.edu>you wrote:
> >can you automatically pick up new groups from the tunnel? I don't
> >know if there is still a bug or if my regional net is having a
> >problem.
>
> If I understand your question properly, you want to detect the appearance
> of groups at the end of a tunnel. The mrouted at the other end of the
> tunnel should detect the presence of groups, i.e. a router can only
> detect groups on any attached interface.
NWNet mbone mrouter <====> FreeBSD mrouted <---> machine running sd
== tunnel -- LAN
the local sd is not detecting new groups from the "outside world"
I had traces in the function X_ip_mforward() in the kernel file
/sys/netinet/ip_mroute.c, and I don't recieve tunnel packets, because
I do not belong to a remote multicast groups, but I can't join until
I get a list of groups...MWnet insists we have a "32" ttl and it is
possible that there is nothing to see and that is why I asked the question.
(yes, I believe in the power of run-on sentences)
I would appreciate if someone could check if they can detect remote groups
or see if you can see a multicast group called "ndsu wb", or if someone is
willing to set up a mini-mbone to test the tunnelling, I would apprecaite
it.
>
> I don't see why the path of the dump files should be changed to
> /var/tmp and /var/run. A number of systems do not have a directory
> called /var/run.
FreeBSD 2.x (more accurate 4.4 based OSes) don't have /usr/tmp, and also
/var/run is the location for process ID of running programs. I was proposing
a change in /usr/src/usr.sbin/mrouted/main.c for 4.4 based OSes, I should
have included a #ifdef for 4.4 systems.
thanks again for all the help/interest.
--mark.
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