John Vollbrecht

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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.(More)
Status of this Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. 1. Abstract This document describes how proxy chaining and policy implementation can be supported in roaming systems. The mechanisms described in this document are in current use.(More)
Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is(More)
In this paper we discuss key architecture and design considerations associated with the development of a control plane capable of dynamic provisioning in this heterogeneous multi-domain, multi-layer, multi-service hybrid network environment . We present a framework for addressing the heterogeneous nature of the hybrid networks via the development of a(More)
Authentication, Authorization and Accounting (AAA) mechanisms have an increasingly versatile role when performing access control on various types of network resources. Emerging data intensive grid applications generate new network requirements. These requirements call for (pre-) allocate-able data transport facilities serving specific user communities. The(More)
Port based network access control makes use of the physical access characteristics of IEEE 802 LAN infrastructures in order to provide a means of authenticating and authorizing devices attached to a LAN port that has point-to-point connection characteristics, and of preventing access to that port in cases where the authentication and authorization process(More)
Production quality high speed networks connecting end devices are needed to design and prototype new types of distributed applications. The <i>eaviv</i> testbed has been deployed to provide such a facility, connecting Louisiana State University, National Center for Supercomputing Applications and Masaryk University, and enabling services for dynamic(More)
In this paper, we address the problem of automated user-empowered control of dynamic network infrastructures. To do so, we have taken advantage of the advanced features of Internet2 Dynamic Circuit Networks (DCN) and the CoUniverse self-organizing application middleware. We modified CoUniverse to interface with DCN and automatically control the circuit(More)
  • J Vollbrecht
  • 2007
Unfortunately, there is no such thing as a universal material for every application--neither in engineering nor in dentistry. Instead, it is a matter of selecting the right material for each individual case and deploying this material in the appropriate way. For this reason, Sirona Dental Systems has decided to augment the existing product portfolio of its(More)