by I am trying to figure out how to connect my machine to the MBone.
I am running the 2.4.2 kernel on a Red Hat 7.0 i686, and this is
where I am so far:
* My kernel supports multicasting and advanced routing:
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_IP_MROUTE=y
* My host responds to ping 224.0.0.1. My gateway (a SDSL modem/router
made by Netopia for Covad), however, does not, nor does it respond
to ping 224.0.0.2. Therefore, I believe I must set up a tunnel to
a host on the MBone in order to receive multicast datagrams from the
outside world.
* I have read http://www.linuxdoc.org/HOWTO/Multicast-HOWTO.html
* I know about mrouted, have downloaded the Linux version from
ftp://www.video.ja.net/mice/mrouted/Linux as instructed in the
Multicast HOWTO, and have successfully compiled it after messing
around with the #includes a bit. But after looking at the HOWTO
documents and my kernel configuration, I began to wonder if the
functionality of mrouted had been partially or fully absorbed
into the Linux kernel.
* I have read http://www.linuxdoc.org/HOWTO/Adv-Routing-HOWTO.html
Unfortunately, Section 7 (Multicast routing) says:
"FIXME: Editor Vacancy! (somebody is working on it, though)"
This is what I would like to know before I go further with mrouted:
* Is mrouted superfluous if I have the 2.4 kernel or does it provide
some capability (e.g. multicast tunneling through a virtual interface)
that the kernel does not?
* Suppose I know the IP address of a nearby multicast router and would
like to set up a tunnel from my machine to that router (a tunnel to
the MBone), so that I may receive multicast datagrams in spite of the
fact that intervening routers are ignorant of multicast routing protocols.
Can I set up an interface to accomplish this task without having to
run mrouted? If so, how?
--
Dave Bailey