Re: Unicast works, but Multicast will not

RTP is not involved with multicast broadcasts. You should be seeing multicast
packets flowing from your video server to your client PC. The only other
traffic you should see are the IGMP joins to the multicast group coming from
your client. The server should always be spitting out multicast packets, even
if there is no client receiving them.

Multicast _is_ UDP, so if you've disabled that, perhaps that's the issue.

"SysAdmin99" <SysAdmin99@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:1B43C88C-9F75-4BDD-A02F-2B31E1663356@xxxxxxxxxxxxxxxx
> Just to update what I have done:
>
> I have a network sniffer and captured packets from the client requesting the
> multicast session and the streaming server. From the client, I see it
> sending a IGMP Report messages to the Mulicast group IP address of the
> server. On the server side, I see RTP (Real Time Transport) protocol
> messages being sent out to the client. The client still will not connect
> with the session.
>
>
> "SysAdmin99" wrote:
>
> > We are trying to multicast live video via Windows Media Sevices running on
> > Windows Server 2003 Enterprize. I am using Windows Media encoder in a PUSH
> > mode to the piblishing point. I have multicast enabled on the publishing
> > point and have run the annoucement wizard to create the necessary NSC file
> > and ASX file for the clients.
> >
> > I am testing this by disabling TCP, UDP, HTTP on the client running Windows
> > Media Player Version 10 and only allowing Multicast. Running the player in
> > this mode, an error message displays as follows: Windows Media player cannot
> > play the file because the server is not available.
> >
> > The network consists of one Cisco 3550, where the streaming server and the
> > player are connected - all layer two.
> >
> > Any help or suggestions would be greatly appreciated.
> >


.

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