From: Jason Cash (cash2001@swbell.net)
Date: Fri Jun 27 2003 - 20:46:07 GMT-3
Can someone provide sample configs of a test-receiver, test-send and
manager? I am confused as to how to get this working.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Hossam Mahmoud
Sent: Wednesday, May 21, 2003 11:58 AM
To: Marc; brian@labforge.com
Cc: ccielab@groupstudy.com
Thank you so much Brian it is a nice tool.
Marc, The tool does what u want (i think) but try to read its documentation
more thourghly.
Here you are some hints:
1- You do't need to use the REAL client mode (A router with a default G/W).
Or even the Join-Group IGMP command.
2- The three routers (sender, reciever and Manager) do't have to be over the
same LAN. You can imagine the cloud in the documentation diagram as any IP
network. Notice the ips of each router ethernet interface. You will find
them in different subnets.
3- Yes, i did't manage to monitor the trafic at the reciever side (It may be
doable but i did't dig so much).
4- But you can still see the traffic results using
mrm TEST status-report comand on the manager.
5- Moreover and more imortantly, you can monitor the multicast traffic
through all the network using regular show commands along the path. i.e.
Sh ip mroute
Sh ip pim rp
Sh ip pim bsr
These commands at the routers along the path between the reciever and sender
will let you monitor the shortest path tree and shared trees and almost all
what u need.
It is a real good tool at least in the LABS. I am not sure about real life
networks.
Thanks a lot
SAM
Marc <tan@dia.janis.or.jp> wrote:
I tried using Multicast Routing Monitor yesterday. I wanted to test a
complication with hub and spoke connectivity, but without using join
commands or pings issued on the routers themselves; but from real sources
and clients off the LAN ports from the spokes. I was also experimenting with
UDLR and with this added complication I wanted to use real
senders/receivers. First, I put two outside routers in client mode. Not
multicast client mode, but regular PC style client mode by turning off ip
routing and setting default gateway. Then I started to follow the
instructions for the mrm tool in IOS to simulate send and receivers.
What I was hoping the mrm tool would do is start sending a multicast stream
from the configured sender, and then from the configured receiver you would
see output on the screen showing an incoming stream, say like !!!!! or
something. But mrm does not work like this I guess. It uses a third router
to manage the process. The third router tells the source to start sending.
And then I think (but not sure) at the same time it tells the receiver to
start expecting. The receiver knowing a session has started will then send
reports back to the manager whether a stream comes in or not. You only view
the results on the manager I believe, so I assume the manager told the
receiver to start expecting. The problem with this is, the sender, receiver,
and manager all have to be on the same LAN. There would be no igmp joins
issued throughout the network which is what I really wanted to test. The
diagram associated with the instructions also shows sender/receiver/manager
all on same LAN and the commands for the manager seem to require an ethernet
port be specified as well. At this point I gave up realizing it wouldn't
work since my simulated sender and receiver were on different LANs. I went
back to pings (still couldn't solve problem). I had thought later to try
again maybe with using a tunnel or maybe a two etherport router might help,
but my guess is this tool won't work for how as I had hoped.
Marc
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Brian Dennis
> Sent: Wednesday, May 21, 2003 2:48 AM
> To: 'Hossam Mahmoud'; ccielab@groupstudy.com
> Subject: RE: Multicast traffic Source Simulation
>
>
> Configuring Multicast Routing Monitor:
>
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios12
> 1/121cgcr/
> ip_c/ipcprt3/1cdtools.htm
>
> Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
> Behalf Of
> Hossam Mahmoud
> Sent: Tuesday, May 20, 2003 9:22 AM
> To: ccielab@groupstudy.com
> Subject: Multicast traffic Source Simulation
>
> Hi all,
> I was working with some Multicast configurations. I need to simulate a
> multicast traffic source on a Cisco router. Is there any
> command to let
> a router to act as a Multicast Source?
>
> It would be fine even if this command creates the mroute connected
> source entryin the mroute table only.
> And Ofcourse if the command creates the entery and send some TESTING
> streams, it would be great.
>
> SAM
> Thanks
>
>
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