From: Marco P. Rodrigues (marco@rodrigues.ca)
Date: Fri Oct 24 2003 - 01:41:08 GMT-3
Simple question (I think?)
I was under the impression I would be able to use ping (on linux or
windows) to test IP connectivity in an Multicast Domain. Seems like
it's only working on a local scope, but nothing is being routed out
for that source. The TTL's on the packets are 64 and pinging from the
routers works fine. It's probably OS related but I can't seem to
figure out how. Default route points to the gateway, even added 224/4
to that gateway also (moot I know).
I guess my question is, what's the best way to test multicast
connectivity from a windows/linux box without using Video Conferencing
Tools, etc. Setup is as follows
LAN LAN LAN
H1 ----- R1 ------------- R2 ---------- R3
| |
H2 H3
H1, H2 and H3 are all part of (*, 238.1.1.1)
From H1 I've tried pinging 238.1.1.1 and I only get a response from
the sender (also receiver) itself, nothing from H2 or H3.
On R1 pinging 238.1.1.1 returns three responses from all receivers.
I'm using SMCroute to join groups on the Linux machine. I couldn't
find a way to have a Windows machine join a group. Was hoping I could
just right click on a network interface and just "add group" and
select the IGMP version. I'm sure an obtuse method via the registery is
available.
Nothing grand, just wondering what some members in the group use to test
primitive mutlicast connectivity between end hosts instead of using
the routers directly.
Thanks.
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