24.4.2. Testing Multicast Using JGroups
The following procedure details the steps to test multicast using JGroups if you are using Red Hat JBoss Data Grid 6.2:
Prerequisites
Ensure that the following prerequisites are met before starting the testing procedure.
- Set the
bind_addrvalue to the appropriate IP address for the instance. - For added accuracy, set
mcast_addrandportvalues that are the same as the cluster communication values. - Start two command line terminal windows. Navigate to the location of the JGroups JAR file for one of the two nodes in the first terminal and the same location for the second node in the second terminal.
Procedure 24.1. Test Multicast Using JGroups
Run the Multicast Server on Node One
Run the following command on the command line terminal for the first node:java -cp jgroups.jar org.jgroups.tests.McastReceiverTest -mcast_addr 230.1.2.3 -port 5555 -bind_addr $YOUR_BIND_ADDRESS
Run the Multicast Server on Node Two
Run the following command on the command line terminal for the second node:java -cp jgroups.jar org.jgroups.tests.McastSenderTest -mcast_addr 230.1.2.3 -port 5555 -bind_addr $YOUR_BIND_ADDRESS
Transmit Information Packets
Enter information on instance for node two (the node sending packets) and press enter to send the information.View Receives Information Packets
View the information received on the node one instance. The information entered in the previous step should appear here.Confirm Information Transfer
Repeat steps 3 and 4 to confirm all transmitted information is received without dropped packets.Repeat Test for Other Instances
Repeat steps 1 to 4 for each combination of sender and receiver. Repeating the test identifies other instances that are incorrectly configured.
Result
All information packets transmitted from the sender node must appear on the receiver node. If the sent information does not appear as expected, multicast is incorrectly configured in the operating system or the network.
