From: Ken.Farrington@barclayscapital.com
Date: Fri Oct 24 2003 - 10:17:36 GMT-3
i must say, the mcast.exe and tfgen are fantastic little tools :)) everyone
should have them!
-----Original Message-----
From: Clark, Jeffrey [mailto:Jeffrey.Clark@nasdaq.com]
Sent: 24 October 2003 13:57
To: Marco P. Rodrigues; ccielab@groupstudy.com
Subject: RE: Connectivity Tools for Multicast using Linux/Windows
There are a couple of tools that I use. I use MGEN for Solaris, they have a
new windows version but I haven't tried it yet. Also I recently found two
small applications for Windows, TFGEN and MCAST. TFGEN is the generator and
MCAST is the receiver. With these you can select the group, port number,
and traffic rate. They don't do anything intelligent like count the packets
sent or received, but they work great for what you're doing. These are GUI
based and extremely easy to use. The link to them is below....
TFGEN & MCAST
http://www.st.rim.or.jp/~yumo/index.html
MGEN
http://manimac.itd.nrl.navy.mil/MGEN/
Jeff
-----Original Message-----
From: Marco P. Rodrigues [mailto:marco@rodrigues.ca]
Sent: Friday, October 24, 2003 12:41 AM
To: ccielab@groupstudy.com
Subject: Connectivity Tools for Multicast using Linux/Windows
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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