D. Milojicic, M. Breugst, I. Busse, J. Campbell, S. Covaci, B. Friedman, K. Kosaka, D. Lange, K. Ono, M. Oshima, C. Tham, S. Virdhagriswaran, and J. White, MASIF: The OMG Mobile Agent System Interoperability Facility, Personal Technologies, 2(3), pp. 117-129, Dec. 1999.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....system exerts supervisory control over access to and use of the agent platform. An agent platform provides the physical infrastructure in which agents can be deployed. The MASIF standard for allowing different multi agent systems to inter operate, also addresses the management of agents [11]. In the MASIF standard, the focus of agent management is placed on interoperability issues. Management is interpreted as a method to allow agent systems to control agents of other agent systems. Resource management is not defined in the MASIF specification, only existing CORBA support can be used ....

....the AMS in [3] Agent Management System) recognizes the following states: creation, suspension, resumption, termination, migration and localization. Other descriptions of management systems recognize actions on agents, which seem to be derived from a (hidden) life cycle model. For example, MASIF [11] includes the following functions: agent creation, termination, suspension, transfer, and resumption. 3.2 Management Oriented Life Cycle Model The aforementioned agent life cycle models had activated as their central state, although an agent cannot be managed by the system when it is active. ....

D. Milojicic, M. Breugst, I. Busse, J. Campbell, S. Covaci, B. Friedman, K. Kosaka, D. Lange, K. Ono, M. Oshima, C. Tham, S. Virdhagriswaran, and J. White. MASIF: The OMG mobile agent system interoperability facility. In Proceedings of Mobile Agents, pages 50--67, Stuttgart, Germany, Sept. 1998.

....why the move failed, which provides the agent with knowledge to successfully recover from moving failures. The reason value is currently only useful if the selected agent platform on which the agent execute supports it. In the future, this functionality could be added to a standard such as MASIF [10]. Reasons for move failures might include the fact that the move destination address is not operational, the agent s current machine is isolated from the network, or the host denies the move due to security reasons, etc. The syntax for the move activity is shown below. Boolean, Reason = move ....

Milojicic, D., et al, MASIF: The OMG Mobile Agent System Interoperability Facility, Mobile Agents. Second International Workshop, MA'98, 1998. Stuttgart, Germany: Springer-Verlag.

....incompatible APls implies that agents developed for one agent platform cannot be run on, let al..one migrate to, a system with a different agent platform. In our opinion, interoperability of platforms is essential for mobile agents to become a ubiquitous technology. Prior approaches, such as MASIF [4], defined a standard API and required all platforms that wish to interoperate to then implement the co,tanon API. These approaches, however, have failed to encourage many systems to adopt the API. l This paper describes initial results from ongoing work to enable interoperability of mobile agent ....

D. Milojicic et al. MASIF: The OMG mobile agent system interoperability facility. In Proc. of the Second International Workxhop on Mobile Agents, volume 1477 of Lecture Notes in Computer Science, pages 5(P67. Springer-Verlag, September 1998.

....incompatible APIs implies that agents developed for one agent platform cannot be run on, let al..one migrate to, a system with a different agent platform. In our opinion, interoperability of platforms is essential for mobile agents to become a ubiquitous technology. Prior approaches, such as MASIF [4], defined a standard API and required all platforms that wish to interoperate to then implement the common API. These approaches, however, have failed to encourage many systems to adopt the API. This paper describes initial results from ongoing work to enable dynamic interoperability of ....

D. Milojicic et al. MASIF: The OMG mobile agent system interoperability facility. In Proc. of the Second International Workshop on Mobile Agents, volume 1477 of Lecture Notes in Computer Science, pages 50--67. Springer-Verlag, September 1998.

....applications such as remote procedure call (RPC) 9] Portability and Standardization: To have a mobile agent move from any machine to any other machine, a standard mobile code system must be established. The Object Management Group s (OMG) Mobile Agent System Interoperability Facility (MASIF) [11] defines part of the problem by addressing crosssystem communication and administration. Security: Security has been the biggest concern for the proponents of mobile agent technology. The problem is partly solved by having access rights to protect against malicious agents [14] Many ....

D. Milojicic, M. Breugst, I. Busse, J. Cambell, S. Covaci, K. Kosaka, D. Lange, K. Ono, M. Oshima, C. Tham, S. Virdhagriswaran, and J. White. MASIF: The OMG Mobile Agent System Interoperability Facility. Proceedings of the Second International Workshop on Mobile Agents, pages 50--67, September 1998. 38

....is an integral part of the middleware. Many modules in the middleware have to request authentication or authorization in order to execute their tasks. In AgentScape, interoperability between agent platforms can be realized in two ways. First by conforming to standards like FIPA [8] or OMG MASIF [20]. These agent platform standards define interfaces and protocols for interoperability between different agent platform implementations. For example, the OMG MASIF standard defines agent management, agent tracking (naming services) and agent transport amongst others. The FIPA standard is more ....

D. Milojicic et al. MASIF: The OMG mobile agent system interoperability facility. In Proceedings of the 2nd International Workshop on Mobile Agents, volume 1477 of Lecture Notes in Computer Science, pages 50--67, Berlin, Germany, Sept. 1998. Springer-Verlag.

.... Common Mobile Agent API The main terminologies used in the MANTRIP mobile agent platform adopt most of these from Grasshopper platform, which also conform to mobile agent industry standard given by OMG, namely the Object Management Group s Mobile Agent System Interoperability Facility (MASIF) [8]. Before describing the main part of this paper, some of these terminologies are briefly explained as follows: Place : provides a logical grouping of functionality inside an Agency; Agency: is the actual runtime environment for mobile and stationary agents; Region: facilitates the management of ....

D. Milojicic et al., "MASIF: The OMG mobile agent system interoperability facility" in Proc. 2nd Int. Workshop Mobile Agents: Springer-Verlag, Lecture Notes in Computer Science, vol. 1477, Sept. 1998.

....one of the above approaches. Interoperability. Another serious problem preventing the adoption of the technology is interoperability. Currently there are over seventy two known implementations of mobile agent platforms [5] and none is able of receiving agents from another. Standards like MASIF [12] and FIPA [13] only cover the interfaces needed for agent and system management, not how to migrate an agent between different systems. Thus, if a web host is going to support an agent platform, which one should it support Supporting only one locks the number of potential clients of the service. ....

D. Milojicic, B. Breugst, I. Busse, J Campbell, S. Covaci, B. Friedman, K. Kosaka, D. Lange, K. Ono, M. Oshima, C. Tham, S. Virdhagriswaran and J. White, "MASIF, The OMG Mobile Agent System Interoperability Facility," in Proc. of the Second International Workshop on Mobile Agents (MA' 98), Stuttgart, Germany, 1998.

....written using the existing Mobitrix facilities, which run on top of CORBA. However, they may also utilize mobile agent platforms (e.g. Aglets [5] or Concordia [11] In general a mobile agent platform could itself run on top of a commercial middleware platform like CORBA (e.g. the MASIF proposal [7] for CORBA) or run directly on top of the mobility and wireless adapter. III. PERFORMANCE MODEL In this section we develop a simple analytical model in order to study the performance of both the mobile agents and a client server based mechanism. We consider N virtual enterprises each having its ....

et al Milojicic, D. Masif: The omg mobile agent system interoperability facility. pages 50--67. Proc. Second Intl. Workshop on Mobile Agents, Springer-Verlag, Sept 1998.

.... for the development of agent based applications (FIPA, Foundation for Intelligent Physical Agents) 5] The KSE approach and FIPA represent up to now the most relevant approaches to multi agent systems, but new initiatives are starting, including the MASIF proposal of the Object Management Group [6]. Target applications developed so far belong to the areas of telecommunications, electronic commerce, manufacturing, industrial process control, air traffic control, entertainment, and also healthcare [3] Mobile agents add a new property to the ones previously described for generic agents: ....

D.Milojicic, M.Breugst, I.Busse, J.Campbell, S.Covaci, B.Friedman, K.Kosaka, D.Lange, K.Ono, M.Oshima, C.Tham, S.Virdhagriswaran, J.White, MASIF: The OMG Mobile Agent System Interoperability Facility, Proc. 2nd Int. Workshop on Mobile Agents, Lecture Notes in Computer Science, 1477, 50-67, 1998.

....an image of an agent is transported to another location, and at the new location it is handed over to an appropriate interpreter to recreate and restart the agent. Interoperability between agent platforms can be realized in two ways. First by conforming to standards like FIPA [11] or OMG MASIF [35]. These agent platform standards define interfaces and protocols for interoperability between different agent platform implementations. For example, the OMG MASIF standard defines agent management, agent tracking (naming services) and agent transport amongst others. The FIPA standard is more ....

D. Milojicic et al. MASIF: The OMG mobile agent system interoperability facility. In Proceedings of the 2nd International Workshop on Mobile Agents, volume 1477 of Lecture Notes in Computer Science, pages 50--67, Berlin, Germany, Sept. 1998. Springer-Verlag.

....Both autonomy and mobility are fundamental attributes of mobile agents. For existence, a mobile agent is dependent on a suitable environment. We choose to view such an environment as a collection of mobile agent systems (MAS) of compatible system types. Our view conforms with OMGs MASIF standard [20, 9]. Figure 1 illustrates a network environment where a NFM system is managing NEs using mobile agents. A MAS can be seen as a service provider for mobile agents visiting or wanting to visit the NE where the MAS resides. Table 1 shows a list of typical services. Our list has emerged from the idea of ....

....visiting or wanting to visit the NE where the MAS resides. Table 1 shows a list of typical services. Our list has emerged from the idea of a MAS based NFM system, but resembles work done by other researcher, i.e. 4] proposes a list of facilities that should be supported by a persistent MAS, and [20] summarises the set of necessary agent system functions the MASIF standard addresses. Our objective in this paper is to examine what failure semantics are desirable for the services provided by a MAS when assuming the MAS to be part of a NFM system. We also test how state of the art MASes ....

D.Milojicic M.Breugst I.Busse J.Campbell S.Covaci B.Friedman K.Kosaka D.Lange K.Ono M.Oshima C.Tham S.Virdhagriswaran and J.White. MASIF - The OMG Mobile Agent System Interoperability Facility. In Personal Technologies, pages 2:117--129. Springer Verlag, 1998.

....system allows flexibility in the programming of distribution by removing static location definition restrictions. Mobility has been examined at many di#erent levels: from thread or task level mobility within multiprocessor systems [102] and process or object mobility within a distributed system [128, 130] to host mobility within a disconnected network [6, 93, 146] One of the most important issues when dealing with mobility within an object system is that of locality and reference management [129,130,158] Objects within a mobile object system may have 1 CHAPTER 1. INTRODUCTION 2 references to ....

....code. ORBs are often used as well known access points for additional services provided as part of the distributed object system. Some commonly found services include security services [136] trading services [17, 137] and contextual naming systems [135] Mobility services have also been proposed [128], while ORB based systems with inbuilt mobility have also been proposed [131] The DISCWorld ORB system provides mechanisms for clients within the DISCWorld system to register services, obtain references to services and perform optimised communications. To support scalable wide area ....

[Article contains additional citation context not shown here]

D. Milojicic, M. Breugst, I. Busse, J. Campbell, S. Covaci, B. Friedman, K. Kosaka, D. Lange, K. Ono, M. Oshima, C. Tham, S. Virdhagriswaran and J. White. MASIF: The OMG Mobile Agent System Interoperability Facility. In K. Rothermel and F. Hohl (editors), Proceedings of the 2nd International Workshop on Mobile Agents, Lecture Notes in Computer Science, Volume 1477, pages 50--67, 1998.

....both autonomy and mobility are fundamental attributes of mobile agents. For existence, a mobile agent is dependent on a suitable environment. We choose to view such an environment as a collection of mobile agent systems (MAS) of compatible system types. Our view conforms with OMGs MASIF standard [19, 9]. Figure 1 illustrates a network environment where a NFM system is managing NEs using mobile agents. MAS NE MAS NE MAS NE MAS NE MAS NE NE NE (Gateway) facility factory Agent Agent facility factory = Mobile Agent System = Network Element MAS NE = Mobile Agent involved in fault management MAS MAS ....

....or wanting to visit the NE where the MAS resides. Table 1 shows a list of typical services. Our list 2 has emerged from the idea of a MAS based NFM system, but resembles work done by other researcher, e.g. 4] proposes a list of facilities that should be supported by a persistent MAS, and [19] summarises the set of necessary agent system functions the MASIF standard addresses. Our objective in this paper is to examine what failure semantics are desirable for the services provided by a MAS when assuming the MAS to be part of a NFM system. We also test how state of the art MASs available ....

D.Milojicic M.Breugst I.Busse J.Campbell S.Covaci B.Friedman K.Kosaka D.Lange K.Ono M.Oshima C.Tham S.Virdhagriswaran and J.White. MASIF - The OMG Mobile Agent System Interoperability Facility. In Personal Technologies, pages 2:117--129. Springer Verlag, 1998. 14

.... Security Facility (ASF) The AIF permits us to interoperate with already existing services and legacy components, via compliance with OMG CORBA [3] In consideration of the increasing diffusion of MA systems, AIF is also conformant with the Mobile Agent System Interoperability Facility (MASIF) [19] to permit agent exchange between MA platforms. The ASF answers the typical security concerns of management in the Internet environment, which is global, open, and untrusted by nature. It provides authentication of principals, integrity, privacy, authorization, and accountability when accessing to ....

....to simply reallocate network resources and service components at runtime. Entities capable of reallocation are represented by agents that can move in the network either via MA native migration methods or via standard specifications, such as CORBA Internet Inter ORB Protocol [3] and MASIF [19]. 5) Agent Identification Facility (AIdF) The AIdF permits us to dynamically assign tags to any entity in the system. Globally unique identifiers are the basis for the realization of the multiple naming systems provided by the ANF that associates different names with the same entity. 6) Agent ....

[Article contains additional citation context not shown here]

D. Milojicic et al., "MASIF: The OMG mobile agent system interoperability facility," in Proc. 2nd Int. Workshop Mobile Agents: SpringerVerlag, Sept. 1998, vol. 1477, Lecture Notes in Computer Science.

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D. Milojicic, M. Breugst, I. Busse, J. Campbell, S. Covaci, B. Friedman, K. Kosaka, D. Lange, K. Ono, M. Oshima, C. Tham, S. Virdhagriswaran, and J. White, MASIF: The OMG Mobile Agent System Interoperability Facility, Personal Technologies, 2(3), pp. 117-129, Dec. 1999.

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MILOJICIC, D., BREUGST, M., BUSSE, I., CAMPBELL, J., COVACI, S., FRIEDMAN, B., KOSAKA, K., LANGE, D., ONO, K., OSHIMA, M., THAM, C., VIRDHAGRISWARAN, S., AND WHITE, J. MASIF: The OMG Mobile Agent System Interoperability Facility. In Proceedings of the 2nd International Workshop on Mobile Agents (1998).

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D. Milojicic, M. Breugst, I. Busse, J. Campbell, S. Covaci, B. Friedman, K. Kosaka, D. Lange, K. Ono, M. Oshima, C. Tham, S. Virdhagriswaran and J. White, "MASIF, The OMG Mobile Agent System Interoperability Facility", in Proceedings of Mobile Agents, LNAI, Vol. 1477, 1998.

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D. Milojicic et al, "MASIF: The OMG Mobile Agent System Interoperability Facility" In Proc. of the 2nd Int. Workshop on Mobile Agents, LNCS 1477, 1998, pp. 50-67.

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D. Milojicic et al. MASIF: The OMG mobile agent system interoperability facility. In Proceedings of the 2nd International Workshop on Mobile Agents (MA'98), volume 1477 of LNCS, pages 50--67, Stuttgart, Germany, Sept. 1998.

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D. Milojicic et al, "MASIF: The OMG Mobile Agent System Interoperability Facility" In Proc. of the 2nd Int. Workshop on Mobile Agents, LNCS 1477, 1998, pp. 5067.

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D. Milojicic, M. Breugst, and S. Covaci et al., "MASIF: The OMG Mobile Agent System Interoperability Facility," in Proc. 2nd Int. Workshop Mobile Agents, (MA'98), Stuttgart, Germany, Sept. 1998.

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Milojcic D., Breugst M., Busse I., Campbell J., Covaci S., Friedman B., Kosaka K., Lange D., Ono K., Oshima M., Tham C., Virdhagriswaran S. & White J. (1998) MASIF: The OMG Mobile Agent System Interoperability Facility. Proc. of the Second International Workshop, Mobile Agents '98, Springer-Verlag, p. 50-67

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D. Milojicic, M. Breugst, I. Busse, J. Campbell, S. Covaci, B. Friedman, K. Kosaka, D. Lange, K. Ono, M. Oshima, C. Tham, S. Virdhagriswaran, and J. White. MASIF: The OMG Mobile Agent System Interoperability Facility. In Proc. 2nd Int. Workshop on Mobile Agents, LNCS 1477, pages 50-67, 1998.

No context found.

D. Milojicic, M. Breugst, I. Busse, J. Campbell, S. Covaci, B. Friedman, K. Kosaka, D. Lange, K. Ono, M. Oshima, C. Tham, S. Virdhagriswaran and J. White. MASIF- The OMG Mobile Agent System Interoperability Facility. Mobile Agents -- Second International Workshop, MA '98 (Stuttgart, Germany, September

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