## Tcl-DP Name Server

Peter T. Liu
Brian Smith
Lawrence Rowe
Computer Science Division - EECS
University of California
Berkeley, CA 94720-1776

#### Abstract

This paper describes a general purpose name server for Tcl-DP. This name server maintains host addresses and port numbers of services running in a distributed en- vironment and allows clients to query about them. It starts services on demand so services are guaranteed to be available, and it provides a simple authentication protocol for better security. The Tcl-DP name server is also designed to be fault- tolerant. Multiple backup servers can be started on different hosts, and a failover occurs when the main server goes down. In addition, the name server provides mechanisms to interface with external modules for extending its functionality.

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