MAK RTI: Distributed forwarder multicast subscription does not work for late-joining forwarders

Problem

With the introduction of the unified Distributed Forwarder, a need arose to communicate between federates on a LAN and forwarders on remote LANs when a DM or DDM multicast group is joined or dropped, such that the forwarders can monitor or drop those groups on its LAN and forward messages back to the federates joined to such multicast groups. However, the scheme to accomplish this does not work if the forwarder is not connected to the forwarder network when the federate joins the multicast group.

Affected MAK Applications

MAK RTI

Severity

Moderate

Platforms

All platforms

Solution

Ensure that the forwarder network is completely established prior to launching federates or prior to allowing federates to attempt to join DM or DDM multicast groups.