An IPMP group over a DLMP aggregation enhances network performance and availability. The underlying interfaces of the IPMP group must not be part of the same DLMP aggregation. Otherwise, both DLMP and IPMP provide high availability and load spreading over the same interfaces, which becomes redundant and error prone. Thus, IPMP groups can be created only from interfaces that are coming from different DLMP aggregations. See the examples in Configuration of IPMP Over DLMP in Oracle VM Server for SPARC and Configuration of IPMP Over DLMP in Zones.
In virtual environments, creating an IPMP group over interfaces coming from non overlapping DLMP aggregations can offer better network performance. High availability is provided by the DLMP aggregation at the L2 layer and the load spreading is managed by the IPMP group at the L3 layer across multiple switches. The next two figures show examples of a combined IPMP and DLMP configuration. The following figure illustrates a configuration on a system with both the global and a non-global zone.
Figure 6 Configuration of IPMP Over DLMP in Zones
This next figure shows the same combined configuration of IPMP and DLMP but deployed on an Oracle VM Server for SPARC.
Figure 7 Configuration of IPMP Over DLMP in Oracle VM Server for SPARC