To configure a
multicast stream from a broadcast publishing point
In the console tree, click the broadcast publishing point from
which you want to multicast content. If the publishing point is
started, click Stop.
In the details pane, click the Properties tab.
In Category, click Multicast streaming.
In Plug-in, click WMS Multicast Data Writer, and
then click the Properties button.
The WMS Multicast Data Writer Properties
dialog box appears.
In Destination multicast IP address and port,specify the
parameters for the multicast distribution by using the following
IP address. Type the multicast IP address.
Port. Type the port on the Windows Media server through
which the multicast will be streamed.
Time-to-live (TTL). Enter the number of routers that
your multicast can pass through (sometimes referred to as the
number of "hops") before expiring on the network.
Select the Enable unicast rollover check box to allow
clients to connect to a server to receive the content, and then do
one of the following:
To allow this publishing point to stream its content by using
the Unicast Data Writer plug-in, click Use this publishing
To redirect unicast client connection requests to an alternate
publishing point, click Use other publishing point, and then
type the URL of the publishing point; for example,
Click the Advanced tab. If you have multiple network
interface cards on your server, in IP address of the network
interface card to multicast from, click the appropriate IP
In Logging URL, type the URL to the Internet Server
Application Programming Interface (ISAPI) directory; for example,
server_name is the name of the Internet Information Services
Click OK to apply your configuration to the plug-in, and
then click the Enable button to use the plug-in on the
To create a multicast announcement, click the Announce
tab, and then click RunMulticast Announcement
To start your publishing point, in the console tree, click the
publishing point. In the details pane, click the Monitor
tab, and then click Start.
If you selected the Enable unicast
rollover check box, verify that the publishing point you are
rolling over to is set to Allow New Connections.
If you specified a logging URL, you are not
required to have the wmsiislog.dll file on the same computer as the
Windows Media server; however, wmsiislog.dll must be installed in a
directory that can be accessed from the Web.
Clients must use an announcement to connect to a
multicast stream. If clients use a URL, they are connecting by
Multicast streaming and the WMS Multicast Data
Writer plug-in are available only if Windows Media Services 9
Series is running on the following editions of the operating
system: Windows Server 2003, Enterprise Edition and Windows Server
2003, Datacenter Edition. If you are running Windows Server 2003,
Standard Edition, these features are not supported.