M. Sloman and E. Lupu. Policy Specification for Programmable Networks. in First International Working Conference on Active Networks (IWAN'99). 1999. Berlin.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....However, if the devices do not support such protocols, a scalable new mechanism for secured configuration delivery will be an interesting research issue. Performance evaluation in terms of provisioning response time could be useful. Also, further investigation of advanced policy management [SL99] Wie94] KKR95] in large scale environment would be interesting. Summary and Conclusion In this chapter we provide a summary of the thesis, and identify the contributions we have made. We also briefly discuss the limitations of our work and future work that others may pursue to enhance the ....

....by central dispatcher in a large scale heterogeneous environment require further investigation. For realistic simulation the use of emulated active network platform [Bau02] may be a good approach. Integrated advanced policy Management : Further investigation of advanced policy management [SL99] Wie94] KKR95] Slo94] KLMB96] TFP02] in a large scale environment managing QoS enabled VPNs, MPLS, and tra#c engineering services from a single integrated platform would be interesting. ....

M. Sloman and E. Lupu. Policy Specification for Programmable Network. First Int. Working Conference on Active Networks (IWAN99),Berlin, June 1999.

....of dynamically attaching policies to modal objects gives a separation of concerns: programmers write code that will be constrained by some policy, whereas device owners decide the actual policy details that they will apply. Applying policies to the management aspects of distributed systems[12] has led to the definition of a high level declarative policy language, Ponder[3] That work is concerned with issues such as who is obliged to perform certain management actions, with associated authorisation controls, under particular conditions. Our work is lower level than this: we are ....

....allows policies that enforce a lifecycle for the use of an object. For example, a modal object representing a file could have a policy that ensures the read or write methods are available only after the open method has been called. Client Identity Many examples of policies in other work[12] focus on authorisation of access to services based on notions such as user identity, authentication and capabilities. In our work, we assume an environment where several clients may be calling methods on a modal object. Consequently, the current state of the object cannot be used to restrict ....

Morris Sloman and Emil Lupu. Policy Specification for Programmable Networks. In Proceedings of IWAN '99, volume 1653 of Lecture Notes in Computer Science, pages 73--84. Springer-Verlag, July 1999.

....Figure 1 Application layer active network architecture These concepts were developed further in the IST project ANDROID, which focuses on the development of a scalable, lightweight management infrastructure for the ALAN based active networks. ANDROID system is an event driven, policy enabled [Slom99] management system [Mars00] The focus of ANDROID is on developing the management for primary issues of starting and maintaining the services and on resource and security management. In the ANDROID scenario active nodes are distinguished in two categories: the active routers and the active servers ....

M. Sloman, E. Lupu, "Policy Specification for Programmable Networks", Proceedings of IWAN '99 Conference, Springer-Verlag, 1999.

....of routers, which exist on many different network routers. The focus of our approach is on the reconfiguration of a high number of routers which all together contribute to the routing of packets on the network. We are aware of the developed approaches both in policy management and distribution [15], and in single router reconfiguration [12] Our aim is to merge the existing work, using XML based technologies for the policies definition and update, and targeting the reconfiguration not only of single routers but of groups of routers. Some work has been carried out also in the context of ....

....reconfiguration of specific routers instead of global network management. The fact that network administrators are allowed to define, update and extend the domain specific languages based on XML for policies description introduced new flexibility which is not available in other approaches such as [15, 17]. In [16] XML is also used for active networking. In particular, the definition of a specific language for the packets payload. Our approach is more articulated but shares the view that XML can be used to define specific structures for policies or data. With XMILE we allow the dynamic update which ....

M. Sloman and E. Lupu. Policy Specification for Programmable Network. In Springer, editor, First Int. Working Conference on Active Networks (IWAN99), Berlin, June 1999.

....of routers, which exist on many different network routers. The focus of our approach is on the reconfiguration of a high number of routers which all together contribute to the routing of packets on the network. We are aware of the developed approaches both in policy management and distribution [Sloman and Lupu (1999)] and in single router reconfiguration [Kohler et al. 2000) Our aim is to merge the aims of those existing work, using XML based technologies for the policies definition and update, and targeting the reconfiguration not only of single routers but of groups of routers. Some work has been ....

....reconfiguration of specific routers instead of global network management. The fact that network administrators are allowed to define, update and extend the domain specific languages based on XML for policies description introduced new flexibility which is not available in other approaches such as Sloman and Lupu (1999); Wakeman et al. 2000) In Smith and Hutchison (2000) XML is also used for active networking. In particular, the definition of a specific language for the packets payload. Our approach is more articulated but shares the view that XML can be used to define specific structures for policies or data. ....

M. Sloman and E. Lupu. Policy Specification for Programmable Network. In Springer, editor, First Int. Working Conference on Active Networks (IWAN99), Berlin, June 1999.

....logic is expressed through declarative policies, evaluated in policy consumers. In the IETF model, the policy consumer can be thought as a centralised manager, with the execution of provisioning policies resulting in configuration operations on managed objects within network elements. In [Slom99], the policy consumer is seen as a hybrid manager agent where the policies express the manager intelligence and access the co located managed objects of the agent part; we consider and extend this model in the next section. The essence though is that management intelligence can be modified, added ....

M. Sloman, E. Lupu, Policy Specification for Programmable Networks, Proc. of the 1 st International Conference on Active Networks, Berlin, Germany, ed. S. Covaci, Springer Verlag, June 1999.

....adapted by means of invoking management operations with new configuration parameters during runtime. There is considerable interest in using policies as a means specifying adaptive behaviour in programmable networks. Some initial work on policies for both management and security is described in [7] and work on policy based content delivery in an ALAN environment is described in [14] However, none of the above have addressed configuration of proxylets in a policy based AN. In ALAN, an enforcement of management or authentication policy means systematically making use of functional proxylets ....

M. Sloman and E. Lupu, "Policy Specification for Programmable Networks", In proc. 1st Int Working Conference, IWAN'99, Berlin, Germany, June/July 1999, LNCS 1653, p. 73 ff.

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M. Sloman and E. Lupu. Policy Specification for Programmable Networks. in First International Working Conference on Active Networks (IWAN'99). 1999. Berlin.

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Sloman, M., Lupu, E., Policy Specification for Programmable Networks, in Proc. of the st International Conference on Active Networks, Berlin, Germany, June 1999

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Sloman, Lupu. "Policy Specification for Programmable Networks". Networks (IWAN'99), Springer Verlag Lecture Notes in Computer Science 1999

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M. Sloman and E. Lupu. Policy Specification for Programmable Networks. In Proceedings of IWAN '99, volume 1653 of Lecture Notes in Computer Science, pages 73--84. Springer-Verlag, July 1999.

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M. Sloman and E. Lupu. Policy Specification for Programmable Network. In First Int. Working Conference on Active Networks (IWAN99), pages 73,84, Berlin, June 1999. Springer Verlag.

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