Chapter 10 Using Multicast

SmartSockets provides a multicast feature to further enhance the features and performance of SmartSockets. SmartSockets Multicast implements reliable multicast to take full advantage of its bandwidth optimization properties. SmartSockets Multicast is an efficient way of routing a message to multiple recipients. The SmartSockets Multicast enables messages to be multicast to RTclients. SmartSockets Multicast uses a protocol called PGM to route messages and an RT process called RTgms to handle the message routing. This chapter describes how to configure and use the RTgms process.

In addition to RTgms, there is a new Group_Names option for RTclients using multicast, described in Chapter 8, Options Reference. There are new PGM options for RTclients, described in Setting PGM Options.

There is also an extended logical connection name that allows the RTclient to connect to the RTgms process. To enable an RTclient to receive or send multicast messages, the RTclient simply connects to the RTgms process, instead of connecting to an RTserver. The extended logical connection name is described in Address for Multicast.

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