Choosing a Redundancy Method for M2PA Links

Unihoming is simpler to configure but more expensive than multihoming, in terms of computational power and network bandwidth to handle worst-case failure. Unihoming requires change-over procedures and rerouting if a network path is interrupted, whereas a multihomed SCTP association will simply switch to the alternate network path.

SCTP multihoming, in general, is less mature than MTP3 change-over procedures. In addition, the lack of ARHOST configurability in the EAGLE can result in asymmetrical traffic on a multihomed connection when both paths are available, which may be undesirable.

The EAGLE fully supports both options for M2PA, but Oracle recommends unihoming.