7 research outputs found

    A secure role-based address allocation and distribution mechanism

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    This paper describes and briefly evaluates a distributed and secure mechanism that allows IP addresses used as locators to be automatically distributed and assigned to routers inside an IP network. The routers then are responsible for the suballocation of these locators to their locally connected endsystems and customers

    Implementation and Preliminary Evaluation of an {ISP}-Driven Informed Path Selection

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    During the past ten years, we have seen the emergence of a set of applications requiring more and more quality of service (QoS). For instance, IPTV needs large bandwidth and delays as lows as possible. Further, while previously a content was located in a single place, it is, nowadays, frequent that the content is replicated among a set of servers located anywhere on five continents or even among users themselves. Perfect examples of this are peer-to-peer (P2P) applications and FTP mirrors. In addition, multihoming, i.e., the ability of having different connections to Internet potentially through different providers, is becoming more and more popular [1, 2]. Finally, network level protocols such as SHIM6 or LISP must often choose the best path among a list of highly disparate paths according to traffic engineering or policies considerations (see discussions on IETF mailing lists)

    Quantifying ASes Multiconnectivity Using Multicast Information

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    peer reviewedRedundant connectivity (or multiconnectivity) between adjacent autonomous systems (ASes) is important for inter-domain traffic engineering and fast recovery in case of failures. However, the redundancy of ASes business relationship links has not been quantitatively studied, mainly due to the difficulty of obtaining relevant data. In this paper, we show that the mrinfo multicast monitoring tool can provide useful data about the Internet topology and such redundant links in particular. Our analysis relies on more than four years of daily queries to about ten thousand routers mapped into more than two hundred ASes. We demonstrate that peering links between ASes are frequently redundant. In particular, our analysis shows that more than half of the studied ASes pairs are connected through multiple physical links. We then refine our analysis by considering the different types of ASes and their business relationships. A particular result of our analysis is that at least 75% of the peer-to-peer relationships between adjacent Tier-1 ASes are redundant, i.e., the con- nections between these ASes involve several physical links. Our analysis is conservative, providing so a lower bound, as some links might not be seen by mrinfo due to ISPs filtering policies

    Quantifying ASes Multiconnectivity Using Multicast Information

    No full text
    Redundant connectivity (or multiconnectivity) between autonomous systems (ASes) is important for interdomain traffic engineering and fast recovery in case of failures. However, the redundancy of ASes peering links has not been quantitatively studied, mainly due to the difficulty of obtaining relevant data
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