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Scaling Internet services by dynamic allocation of connections

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2 Author(s)
Goldszmidt, G. ; IBM T.J. Watson Res. Center, Hawthorne, NY, USA ; Hunt, G.

Network Dispatcher (ND) is a software tool that “routes” TCP connections to multiple TCP servers that share their workload. It exports a set of virtual IP addresses that are concealed and shared by the servers. It implements a novel dynamic load-sharing algorithm for allocation of TCP connections among servers according to their real-time load and responsiveness. ND forwards packets to the servers without performing any TCP/IP header translations, consequently outgoing server-to-client packets are not handled, and can follow a separate network route to the clients. Its allocation method was proven to be efficient in live tests, supporting Internet sites that served millions of TCP connections per hour. This paper describes the load management features of ND

Published in:

Integrated Network Management, 1999. Distributed Management for the Networked Millennium. Proceedings of the Sixth IFIP/IEEE International Symposium on

Date of Conference: