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| Administering Multicast Options |
Overview of Multicasting
A multicast group communications protocol is used to communicate among middle-tier SAS applications in a single SAS deployment (the set of applications connected to the same SAS Metadata Server). When installation is performed with the SAS Deployment Wizard, the wizard supplies you with a default multicast address that it generates based on the machine's (metadata server) IP address. The combination of multicast IP address and multicast UDP port should be different for each SAS deployment and also different from those used by other multicast applications at your site.
Multicast options are system properties that are specified as Java command line options on the Web application server to affect the behavior of the system. Multicast options provide the ability to tune and change the behavior of the multicast communication occurring within the SAS system.
The IP address and multicast UDP port number for the multicast host must match the values in the Web application server's start-up script (for example, SASServer1.bat) and the environment.properties file located in the SAS-configuration-directory\Lev1\Web\Applications\RemoteServices directory.
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