1134 & 1135 Web User Guide rev2.0 - OneAccess extranet

TELINDUS 1134/1135 Web Interface User’s Guide4.6.14 MulticastMulticasting is a form of limited broadcast. UDP is used to send datagrams to all hosts thatbelong to what is called a "host group." A host group is a set of zero or more hosts identified bythe same destination IP address. The following statements apply to host groups.a. Anyone can join or leave a host group at will.b. There are no restrictions on a host's location.c. There are no restrictions on the number of members that may belong to a host group.d. A host may belong to multiple host groups.e. Non-group members may send UDP datagrams to the host group.Multicasting is useful when data needs to be sent to more than one other device. For instance, ifone device is responsible for acquiring data that many other devices need, then multicasting is anatural fit. Note that using multicasting as opposed to sending the same data to individual devicesuses less network bandwidth.To enable Multicasting, click on Advanced and under Advanced, select Muliticast. Figure 29illustrates a typical Multicast configuration.Figure 29 (Multicast)The Apply button will temporarily save these settings. To make the change permanent, you needto click on Save All Settings. At the System Commands page under the TOOLS, click on SaveAll.Version 1.0 Page 41/54 October 2004