This paper addresses the problem of resource reservation at the network layer for mobile nodes, and proposes a simple and scalable scheme that allocates resources to an ongoing data flow of a mobile node in all the ne...
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This paper addresses the problem of resource reservation at the network layer for mobile nodes, and proposes a simple and scalable scheme that allocates resources to an ongoing data flow of a mobile node in all the neighboring subnets. The resource reservation setup and maintenance are achieved through two simple protocols, viz, the Neighbor Mobility Agent Discovery Protocol (NMADP), and the Mobile Reservation Update Protocol (MRUP). These protocols can be easily incorporated into the current Internet routing mechanisms such as the Open Shortest Path First protocol (OSPF) and Mobile IP. Since the scope of our reservation protocols is restricted to leaf subnet they are also adaptable with both Intserv and Diffserv architectures of the Internet. With Intserv, our protocols can work with Mobile RSVP, by providing the list of foreign agents so that passive reservations can be setup. Whereas, for Diffserv, the reservation is made by the NMADP and MRUP protocols.
Material for a computerarchitecture class based on four progressively more complex microprogrammed circuits is described. The circuits and their associated microassemblers and simulators are discussed. Interestingly,...
Material for a computerarchitecture class based on four progressively more complex microprogrammed circuits is described. The circuits and their associated microassemblers and simulators are discussed. Interestingly, the simulators allow students to understand the workings of the hardware more fully than is possible using the hardware alone.
The use of communication satellites as a possible way of offering broadband island interconnectivity appears to be a very attractive option, as it will enable the provision of an all-digital, transparent service to a ...
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The use of communication satellites as a possible way of offering broadband island interconnectivity appears to be a very attractive option, as it will enable the provision of an all-digital, transparent service to a number of ATM islands spanning a wide area, accommodating efficiently a variety of traffic demands. The CATALYST Project (RACE II/R2074) is an attempt to demonstrate the applicability and compatibility of satellite technology with the terrestrial BISDN. In this paper we present an overview of the project and focus on an initial study of the expected user performance through the CATALYST network. Our analysis is based upon mathematical and simulation models and describes the end-system to end-system transfer delay for given message lengths. The protocol profiles assume a mix of Novell NetWare and Network File System client/server architectures, which are supported by either the IEEE 802.3/Ethernet or fibre distributed data interface LANs, which are themselves linked via LAN/ATM/satellite interface units. Areas of further investigation, and the implication of our analysis on the actual network architecture, are discussed.
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