Title :
End-to-end failover thresholds for transport layer multihoming
Author :
Caro, A.L. ; Amer, Paul D. ; Stewart, Randall R.
Author_Institution :
Comput. & Inf. Sci., Delaware Univ., Newark, DE, USA
Abstract :
SCTP´s multihoming failure detection time depends on three tunable parameters: RTO.min (minimum retransmission timeout), RTO.max (maximum retransmission timeout), and Path.Max.Retrans (threshold number of consecutive timeouts that must be exceeded to detect failure). RFC2960 recommends Path.Max.Retrans = 5, which translates to a failure detection time of at least 63 seconds - unacceptable to many applications. This research investigates the tradeoff between a more aggressive (i.e., lower) threshold, and spurious failovers for the application of bulk file transfer. We surprisingly find that spurious failovers do not degrade overall performance, and sometimes actually improve goodput performance.
Keywords :
failure analysis; telecommunication network reliability; telecommunication network topology; transport protocols; end-to-end failover threshold; file transfer; maximum retransmission timeout; minimum retransmission timeout; multihoming failure detection; transport layer multihoming; Collaborative work; Control systems; Costs; Degradation; Fault tolerance; Government; IP networks; Internet; Network interfaces; Transport protocols;
Conference_Titel :
Military Communications Conference, 2004. MILCOM 2004. 2004 IEEE
Print_ISBN :
0-7803-8847-X
DOI :
10.1109/MILCOM.2004.1493253
