Re: Multicast check?



On Mon, 14 Nov 2005 05:36:06 -0800, Rick E
<RickE@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

>We're setting up our first streaming server and have been successful at a
>unicast broadcast. We then tried to setup a multicast version of the same
>broadcast and while we get no errors we cannot connect to the stream.
>
>Is there a simple method to check from the server that it is indeed
>streaming on the IP address and port you specified? I thought the NETSTAT
>would show it in the list but it doesn't. We're unsure if the server isn't
>streaming or our clients don't have the proper connect syntax.

Are you streaming internally on your LAN, or did you expect multicast
to work over the internet (clue : it doesn't in general unless you
have access to "Internet 2" and MONE muticast islands near to you).

You will not currently be able to use multicast to general internet
users, as most routers and ISPs don't support multicast right now.

If you are streaming within your organisation, you need to ask your
network manager to enable multicast on the routers, and you probably
want to enable QOS reporting as well on clients and routers.

To test multicast connectivity, you can open an MSDOS prompt and

pathping -T -R ip.of.your.server

And you should get a list of nodes which are QOS aware throughout the
path (probably I'm prepared to bet, none to few).

More info here (it makes a good read) :
http://www.microsoft.com/windows/windowsmedia/serve/multiwp.aspx
http://www.microsoft.com/windows/windowsmedia/serve/firewall.aspx#Multicast

Cheers - Neil
.



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