The Experts below are selected from a list of 423 Experts worldwide ranked by ideXlab platform

Zhili Zhang - One of the best experts on this subject based on the ideXlab platform.

  • Failure Insensitive Routing for Ensuring Service Availability
    2011
    Co-Authors: Srihari Nelakuditi, Sanghwan Lee, Zhili Zhang
    Abstract:

    Abstract. Intra-domain routing protocols employed in the Internet route around failed links by having Routers detect Adjacent link failures, exchange link state changes, and recompute their routing tables. Due to several delays in detection, propagation and recomputation, it may take tens of seconds to minutes after a link failure to resume forwarding of packets to the affected destinations. This discontinuity in destination reachability adversely affects the quality of continuous media applications such as Voice over IP. Moreover, the resulting service unavailability for even a short duration could be catastrophic in the world of e-commerce. Though careful tuning of the various parameters of the routing protocols can accelerate convergence, it may cause instability when the majority of the failures are transient. To improve the failure resiliency without jeopardizing the routing stability, we propose a local rerouting based approach called failure insensitive routing. Under this approach, upon a link failure, Adjacent Router suppresses global updating and instead initiates local rerouting. All other Routers infer potential link failures from the packet’s incoming interface, precompute interface specific forwarding tables and route around failed links without explicit link state updates. We demonstrate that the proposed approach provides higher service availability than the existing routing schemes.

  • Local Rerouting for Handling Transient Link Failures
    2007
    Co-Authors: Srihari Nelakuditi, Sanghwan Lee, Zhili Zhang
    Abstract:

    Link failures are part of the day to day operation of a network due to various causes such as maintenance, faulty interfaces, and accidental fiber cuts. Due to several delays in detection, propagation and recomputation, intra-domain routing protocols may take tens of seconds to minutes after a link failure to resume forwarding of packets to the affected destinations. During this period, some destinations would be unreachable and the corresponding services unavailable. Careful tuning of various parameters to accelerate routing convergence may cause routing instability when the majority of failures are transient. To improve failure resiliency without jeopardizing routing stability, we propose a local rerouting approach. Under this approach, upon a link failure, Adjacent Router suppresses global updating and instead initiates local rerouting. All other Routers infer potential link failures from packet's flight, precompute interface dependent forwarding tables and route around failed links without explicit link state updates. This article demonstrates feasibility, reliability and stability of the proposed approach

  • failure insensitive routing for ensuring service availability
    International Workshop on Quality of Service, 2003
    Co-Authors: Srihari Nelakuditi, Sanghwan Lee, Zhili Zhang
    Abstract:

    Intra-domain routing protocols employed in the Internet route around failed links by having Routers detect Adjacent link failures, exchange link state changes, and recompute their routing tables. Due to several delays in detection, propagation and recomputation, it may take tens of seconds to minutes after a link failure to resume forwarding of packets to the affected destinations. This discontinuity in destination reachability adversely affects the quality of continuous media applications such as Voice over IP. Moreover, the resulting service unavailability for even a short duration could be catastrophic in the world of e-commerce. Though careful tuning of the various parameters of the routing protocols can accelerate convergence, it may cause instability when the majority of the failures are transient. To improve the failure resiliency without jeopardizing the routing stability, we propose a local rerouting based approach called failure insensitive routing. Under this approach, upon a link failure, Adjacent Router suppresses global updating and instead initiates local rerouting. All other Routers infer potential link failures from the packet's incoming interface, precompute interface specific forwarding We demonstrate that the proposed approach provides higher service availability than the existing routing schemes.

  • Failure Insensitive Routing for Ensuring Service Availability
    2003
    Co-Authors: Srihari Nelakuditi Sanghwan, Srihari Nelakuditi, Sanghwan Lee, Zhili Zhang
    Abstract:

    Intra-domain routing protocols employed in the Internet route around failed links by having Routers detect Adjacent link failures, exchange link state changes, and recompute their routing tables. Due to several delays in detection, propagation and recomputation, it may take tens of seconds to minutes after a link failure to resume forwarding of packets to the affected destinations. This discontinuity in destination reachability adversely affects the quality of continuous media applications such as Voice over IP. Moreover, the resulting service unavailability for even a short duration could be catastrophic in the world of e-commerce. Careful tuning of various parameters to accelerate routing convergence may cause routing instability when the majority of failures are transient. To improve failure resiliency without jeopardizing routing stability, we propose a local rerouting based approach called failure insensitive routing. Under this approach, upon a link failure, Adjacent Router suppresses global updating and instead initiates local rerouting. All other Routers infer potential link failures from packet's incoming interface, precompute interface dependent forwarding tables and route around failed links without explicit link state updates

Srihari Nelakuditi - One of the best experts on this subject based on the ideXlab platform.

  • Failure Insensitive Routing for Ensuring Service Availability
    2011
    Co-Authors: Srihari Nelakuditi, Sanghwan Lee, Zhili Zhang
    Abstract:

    Abstract. Intra-domain routing protocols employed in the Internet route around failed links by having Routers detect Adjacent link failures, exchange link state changes, and recompute their routing tables. Due to several delays in detection, propagation and recomputation, it may take tens of seconds to minutes after a link failure to resume forwarding of packets to the affected destinations. This discontinuity in destination reachability adversely affects the quality of continuous media applications such as Voice over IP. Moreover, the resulting service unavailability for even a short duration could be catastrophic in the world of e-commerce. Though careful tuning of the various parameters of the routing protocols can accelerate convergence, it may cause instability when the majority of the failures are transient. To improve the failure resiliency without jeopardizing the routing stability, we propose a local rerouting based approach called failure insensitive routing. Under this approach, upon a link failure, Adjacent Router suppresses global updating and instead initiates local rerouting. All other Routers infer potential link failures from the packet’s incoming interface, precompute interface specific forwarding tables and route around failed links without explicit link state updates. We demonstrate that the proposed approach provides higher service availability than the existing routing schemes.

  • Local Rerouting for Handling Transient Link Failures
    2007
    Co-Authors: Srihari Nelakuditi, Sanghwan Lee, Zhili Zhang
    Abstract:

    Link failures are part of the day to day operation of a network due to various causes such as maintenance, faulty interfaces, and accidental fiber cuts. Due to several delays in detection, propagation and recomputation, intra-domain routing protocols may take tens of seconds to minutes after a link failure to resume forwarding of packets to the affected destinations. During this period, some destinations would be unreachable and the corresponding services unavailable. Careful tuning of various parameters to accelerate routing convergence may cause routing instability when the majority of failures are transient. To improve failure resiliency without jeopardizing routing stability, we propose a local rerouting approach. Under this approach, upon a link failure, Adjacent Router suppresses global updating and instead initiates local rerouting. All other Routers infer potential link failures from packet's flight, precompute interface dependent forwarding tables and route around failed links without explicit link state updates. This article demonstrates feasibility, reliability and stability of the proposed approach

  • failure insensitive routing for ensuring service availability
    International Workshop on Quality of Service, 2003
    Co-Authors: Srihari Nelakuditi, Sanghwan Lee, Zhili Zhang
    Abstract:

    Intra-domain routing protocols employed in the Internet route around failed links by having Routers detect Adjacent link failures, exchange link state changes, and recompute their routing tables. Due to several delays in detection, propagation and recomputation, it may take tens of seconds to minutes after a link failure to resume forwarding of packets to the affected destinations. This discontinuity in destination reachability adversely affects the quality of continuous media applications such as Voice over IP. Moreover, the resulting service unavailability for even a short duration could be catastrophic in the world of e-commerce. Though careful tuning of the various parameters of the routing protocols can accelerate convergence, it may cause instability when the majority of the failures are transient. To improve the failure resiliency without jeopardizing the routing stability, we propose a local rerouting based approach called failure insensitive routing. Under this approach, upon a link failure, Adjacent Router suppresses global updating and instead initiates local rerouting. All other Routers infer potential link failures from the packet's incoming interface, precompute interface specific forwarding We demonstrate that the proposed approach provides higher service availability than the existing routing schemes.

  • Failure Insensitive Routing for Ensuring Service Availability
    2003
    Co-Authors: Srihari Nelakuditi Sanghwan, Srihari Nelakuditi, Sanghwan Lee, Zhili Zhang
    Abstract:

    Intra-domain routing protocols employed in the Internet route around failed links by having Routers detect Adjacent link failures, exchange link state changes, and recompute their routing tables. Due to several delays in detection, propagation and recomputation, it may take tens of seconds to minutes after a link failure to resume forwarding of packets to the affected destinations. This discontinuity in destination reachability adversely affects the quality of continuous media applications such as Voice over IP. Moreover, the resulting service unavailability for even a short duration could be catastrophic in the world of e-commerce. Careful tuning of various parameters to accelerate routing convergence may cause routing instability when the majority of failures are transient. To improve failure resiliency without jeopardizing routing stability, we propose a local rerouting based approach called failure insensitive routing. Under this approach, upon a link failure, Adjacent Router suppresses global updating and instead initiates local rerouting. All other Routers infer potential link failures from packet's incoming interface, precompute interface dependent forwarding tables and route around failed links without explicit link state updates

Sanghwan Lee - One of the best experts on this subject based on the ideXlab platform.

  • Failure Insensitive Routing for Ensuring Service Availability
    2011
    Co-Authors: Srihari Nelakuditi, Sanghwan Lee, Zhili Zhang
    Abstract:

    Abstract. Intra-domain routing protocols employed in the Internet route around failed links by having Routers detect Adjacent link failures, exchange link state changes, and recompute their routing tables. Due to several delays in detection, propagation and recomputation, it may take tens of seconds to minutes after a link failure to resume forwarding of packets to the affected destinations. This discontinuity in destination reachability adversely affects the quality of continuous media applications such as Voice over IP. Moreover, the resulting service unavailability for even a short duration could be catastrophic in the world of e-commerce. Though careful tuning of the various parameters of the routing protocols can accelerate convergence, it may cause instability when the majority of the failures are transient. To improve the failure resiliency without jeopardizing the routing stability, we propose a local rerouting based approach called failure insensitive routing. Under this approach, upon a link failure, Adjacent Router suppresses global updating and instead initiates local rerouting. All other Routers infer potential link failures from the packet’s incoming interface, precompute interface specific forwarding tables and route around failed links without explicit link state updates. We demonstrate that the proposed approach provides higher service availability than the existing routing schemes.

  • Local Rerouting for Handling Transient Link Failures
    2007
    Co-Authors: Srihari Nelakuditi, Sanghwan Lee, Zhili Zhang
    Abstract:

    Link failures are part of the day to day operation of a network due to various causes such as maintenance, faulty interfaces, and accidental fiber cuts. Due to several delays in detection, propagation and recomputation, intra-domain routing protocols may take tens of seconds to minutes after a link failure to resume forwarding of packets to the affected destinations. During this period, some destinations would be unreachable and the corresponding services unavailable. Careful tuning of various parameters to accelerate routing convergence may cause routing instability when the majority of failures are transient. To improve failure resiliency without jeopardizing routing stability, we propose a local rerouting approach. Under this approach, upon a link failure, Adjacent Router suppresses global updating and instead initiates local rerouting. All other Routers infer potential link failures from packet's flight, precompute interface dependent forwarding tables and route around failed links without explicit link state updates. This article demonstrates feasibility, reliability and stability of the proposed approach

  • failure insensitive routing for ensuring service availability
    International Workshop on Quality of Service, 2003
    Co-Authors: Srihari Nelakuditi, Sanghwan Lee, Zhili Zhang
    Abstract:

    Intra-domain routing protocols employed in the Internet route around failed links by having Routers detect Adjacent link failures, exchange link state changes, and recompute their routing tables. Due to several delays in detection, propagation and recomputation, it may take tens of seconds to minutes after a link failure to resume forwarding of packets to the affected destinations. This discontinuity in destination reachability adversely affects the quality of continuous media applications such as Voice over IP. Moreover, the resulting service unavailability for even a short duration could be catastrophic in the world of e-commerce. Though careful tuning of the various parameters of the routing protocols can accelerate convergence, it may cause instability when the majority of the failures are transient. To improve the failure resiliency without jeopardizing the routing stability, we propose a local rerouting based approach called failure insensitive routing. Under this approach, upon a link failure, Adjacent Router suppresses global updating and instead initiates local rerouting. All other Routers infer potential link failures from the packet's incoming interface, precompute interface specific forwarding We demonstrate that the proposed approach provides higher service availability than the existing routing schemes.

  • Failure Insensitive Routing for Ensuring Service Availability
    2003
    Co-Authors: Srihari Nelakuditi Sanghwan, Srihari Nelakuditi, Sanghwan Lee, Zhili Zhang
    Abstract:

    Intra-domain routing protocols employed in the Internet route around failed links by having Routers detect Adjacent link failures, exchange link state changes, and recompute their routing tables. Due to several delays in detection, propagation and recomputation, it may take tens of seconds to minutes after a link failure to resume forwarding of packets to the affected destinations. This discontinuity in destination reachability adversely affects the quality of continuous media applications such as Voice over IP. Moreover, the resulting service unavailability for even a short duration could be catastrophic in the world of e-commerce. Careful tuning of various parameters to accelerate routing convergence may cause routing instability when the majority of failures are transient. To improve failure resiliency without jeopardizing routing stability, we propose a local rerouting based approach called failure insensitive routing. Under this approach, upon a link failure, Adjacent Router suppresses global updating and instead initiates local rerouting. All other Routers infer potential link failures from packet's incoming interface, precompute interface dependent forwarding tables and route around failed links without explicit link state updates

T. M. Mcguire - One of the best experts on this subject based on the ideXlab platform.

  • Hop Integrity in Computer Networks
    2000
    Co-Authors: M. G. Gouda, E. N. Elnozahy, -t. C. Huang, T. M. Mcguire
    Abstract:

    A computer network is said to provide hop integrity iff when any Router p in the network receives a message m supposedly from an Adjacent Router q, then p can check that m was indeed sent by q, was not modified after it was sent, and was not a replay of an old message sent from q to p. In this paper, we describe three protocols that can be added to the Routers in a computer network so that the network can provide hop integrity. These three protocols are a secret exchange protocol, a weak integrity protocol, and a strong integrity protocol. All three protocols are stateless, require small overhead, and do not constrain the network protocol in the Routers in any way. Keywords: authentication, Internet, network protocol, Router, security, smurf attack, SYN attack, message modification, message replay. 1

  • Hop Integrity in Computer Networks
    2000
    Co-Authors: Mohamed Gouda Member, M. G. Gouda, E. N. Elnozahy, Chin-tser Huang, Student Member, T. M. Mcguire
    Abstract:

    A computer network is said to provide hop integrity iff when any Router in the network receives a message supposedly from an Adjacent Router , then can check that was indeed sent by , was not modified after it was sent, and was not a replay of an old message sent from to . In this paper, we describe three protocols that can be added to the Routers in a computer network so that the network can provide hop integrity, and thus overcome most denial-of-service attacks. These three protocols are a secret exchange protocol, a weak integrity protocol, and a strong integrity protocol. All three protocols are stateless, require small overhead, and do not constrain the network protocol in the Routers in any way

M. G. Gouda - One of the best experts on this subject based on the ideXlab platform.

  • Hop Integrity in Computer Networks
    2000
    Co-Authors: M. G. Gouda, E. N. Elnozahy, -t. C. Huang, T. M. Mcguire
    Abstract:

    A computer network is said to provide hop integrity iff when any Router p in the network receives a message m supposedly from an Adjacent Router q, then p can check that m was indeed sent by q, was not modified after it was sent, and was not a replay of an old message sent from q to p. In this paper, we describe three protocols that can be added to the Routers in a computer network so that the network can provide hop integrity. These three protocols are a secret exchange protocol, a weak integrity protocol, and a strong integrity protocol. All three protocols are stateless, require small overhead, and do not constrain the network protocol in the Routers in any way. Keywords: authentication, Internet, network protocol, Router, security, smurf attack, SYN attack, message modification, message replay. 1

  • Hop Integrity in Computer Networks
    2000
    Co-Authors: Mohamed Gouda Member, M. G. Gouda, E. N. Elnozahy, Chin-tser Huang, Student Member, T. M. Mcguire
    Abstract:

    A computer network is said to provide hop integrity iff when any Router in the network receives a message supposedly from an Adjacent Router , then can check that was indeed sent by , was not modified after it was sent, and was not a replay of an old message sent from to . In this paper, we describe three protocols that can be added to the Routers in a computer network so that the network can provide hop integrity, and thus overcome most denial-of-service attacks. These three protocols are a secret exchange protocol, a weak integrity protocol, and a strong integrity protocol. All three protocols are stateless, require small overhead, and do not constrain the network protocol in the Routers in any way