This paper presents the design and implementation of a Highly Available Network File Server (HA-NFS). We separate the problem of network le server reliability into three diierent subprob-lems: server reliability, disk reliability, and network reliability. HA-NFS ooers a diierent solution for each: dual-ported disks and impersonation are used to provide server reliability, disk mirroring can be ...

Resource reservation is required to guarantee delivery of continuous media data from a server across a network for continuous playback by a client. This paper addresses the characterization of the network bandwidth requirements of Variable Bit Rate data streams and the corresponding admission control mechanism at the server. We show that a characterization which sends data early, making intelli...

Peer-to-peer (p2p) network is an alternative of client/server system for sharing resources, e.g. files. P2P network is a robust, distributed and fault tolerant architecture. We consider the scenario of p2p network over MANET where all nodes are the members of p2p network and one of the node acts as p2p server which maintains the file list available to the nodes. The mobility of nodes constantly...

The paper studies a closed queueing network containing a server station and k client stations. The server station is an infinite server queueing system, and client stations are single server queueing systems with autonomous service, i.e. every client station serves customers (units) only at random instants generated by strictly stationary and ergodic sequence of random variables. The total numb...

Server Management plays an important role in Campus Network Management which is crucial to build an effective campus network. However, if the server makes some small mistakes while he doesn’t stay in the server room, he should come back quickly from another place which is far from the server room to solve just a small problem. The authors design a mobile management system for campus servers, an...

Recent highly publicized benchmarks have suggested that Linux systems do not scale as well as other systems, such as Windows NT, when used as network servers. Windows NT contains features such as I/O completion ports that help boost network server performance and scalability. In this paper we focus on improving the Linux implementation of poll() to reduce the expense of managing large numbers o...

Distributed systems in use today depend heavily on network communications between clients and servers. In this report, we describe the design and implementation of the network architecture (hardware, software and protocols) of the RAID-II system. RAID-II is a high speed file server connected to an UltraNetwork. To support high bandwidth network transfers with the RAID-II server, we divided the ...

A majority of IS graduates (56% in one recent survey] are involved in server administration, network administration and IS security work. An important recent innovation in these areas is the deployment of separate networks dedicated to server administration and related tasks, combining the cost and productivity advantages of remote administration with risk levels comparable to console-based adm...

Recently, much attention is paid to the network security including information leak through a network. As one of the important technologies about network security, there is an access control for network services. There are some methods of access control: the access control by packet filtering mechanism on the network server side, the access control by the communication control mechanism on the ...

Status of this Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Abstract This memo defines a Management I...