Transport layer multihoming for fault tolerance in FCS networks

We document a potential inefciency in the current SCTP re-transmission policy. The current scheme intends to improve the chance of success by exploiting the redundant paths be-tween multihomed endpoints, but we have found that the cur-rent SCTP retransmission policy often degrades performance. We comparatively evaluate an alternative retransmission pol-icy and show that the current SCTP retransmission policy unexpectedly performs worse under certain conditions. Our analysis exposes the problem and we discuss four possible so-lutions.