20.4.2.3. jgroups-tcp.xml
jgroups-tcp.xml is a pre-configured JGroups file in JBoss Data Grid. The jgroups-tcp.xml configuration
- uses TCP as a transport and UDP multicast for discovery.
- is better suited to smaller clusters (under 100 nodes) only when using distribution mode. This is because TCP is more efficient as a point-to-point protocol.
As with other pre-configured JGroups files, the behavior of some of these settings can be altered by adding certain system properties to the JVM at startup. The settings that can be configured are shown in the following table.
| System Property | Description | Default | Required? |
|---|---|---|---|
| jgroups.tcp.address | IP address to use for the TCP transport. | 127.0.0.1 | No |
| jgroups.tcp.port | Port to use for TCP socket | 7800 | No |
| jgroups.udp.mcast_addr | IP address to use for multicast (for discovery). Must be a valid Class D IP address, suitable for IP multicast. | 228.6.7.8 | No |
| jgroups.udp.mcast_port | Port to use for multicast socket | 46655 | No |
| jgroups.udp.ip_ttl | Specifies the time-to-live (TTL) for IP multicast packets. The value here refers to the number of network hops a packet is allowed to make before it is dropped | 2 | No |
