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A rapid growth in the internet network technologies claims for a better routing protocol in transmitting data. The network performance is evaluated to compare the two Link State (LS) routing protocols which are the Open Shortest Path First version3 (OSPFv3) and Intermediate System to Intermediate System (IS-IS). The evaluation is done in terms of the performance in the network convergence through...
In the modern Internet area, the role of routing protocol is the most important. Routing protocols are used to determine the best path to destination. There are two main types of algorithms for IP routing: Distance Vector Routing and Link State Routing. In this work we aimed to analyze the performance of routing protocols (RIP, OSPF, EIGRP, IGRP) for various services (Voice, Video Conferencing and...
Software Defined Networking (SDN) is an emerging paradigm to address the demands for flexible and agile network controllability. The fundamental idea of SDN is the physical separation of the network control plane from the data (forwarding) plane. This migration of control into programmable computing devices enables the underlying network infrastructures to be abstracted for applications and services...
Named Data Networking (NDN) is a new Internet architecture that replaces today's focus on where — addresses and hosts — with what — the content that users and applications care about. A unique advantage of NDN over IP is the adaptive forwarding plane, which, by observing the performance of Interest/Data exchange, can dynamically select the best performing forwarding path, detect and recover from failures,...
Ethernet has evolved from a local network technology to a technology that can be used in metro access and transport networks. Unfortunately the new Ethernet networks cannot achieve the level of reliability of traditional TDM Carrier-class networks. In order to improve Ethernet performance, we need to develop new mechanisms specifically adapted to this type of network technology. The high convergence...
The IPFRR technology provides fast network recovery after a link or router failure within an ISP network. During the link or the router failure within network, there is unpredictable period of time when part of communication is lost until the process of network convergence will complete. During this process specific networks may become unavailable and problems with critical applications and services,...
This project involves finding out a solution through implementation of HSRP (Hot Standby Routing Protocol) which gives robustness to the network and allows load sharing between links. HSRP is a routing protocol used to find out an alternate route to forward a packet to the destination network. Two routers connected to the same network are required to initiate HSRP. To enable HSRP, a dynamic routing...
As the Internet takes an increasingly central role in day to day communications infrastructure, the slow convergence of routing protocols after a network failure becomes a growing problem. To assure fast recovery from link and node failures in IP networks, it presents a new recovery scheme called Multiple Routing Configurations (MRC). The proposed scheme guarantees recovery in all single failure scenarios,...
The OSPF convergence period takes several milliseconds to update the current information about the topology. In worse transient behavior, the packets are dropped or loop may occur. It may result in network instability. The link failure recovery is important because it finds the alternative path to deviate the packets, in order to prevent the packet loss rate. An IPFRR approach, FEPS can handle single...
Guaranteeing a high availability of communication services to customers is a day-to-day challenge for Carrier networks. In the context of IGP routing, when a failure occurs, a re-convergence process is initiated in order to re-establish a consistent view of the network. During this process, the latency of the failure detection, which is realized by the Hello protocol, is responsible for an important...
Quickly recovering IP networks from failures is critical to enhancing Internet robustness and availability. Due to their serious impact on network routing, large-scale failures have received increasing attention in recent years. We propose an approach called Reactive Two-phase Rerouting (RTR) for intra-domain routing to quickly recover from large-scale failures with the shortest recovery paths. To...
In this paper, we propose a new gossip-based signaling dissemination method for the Next Steps in Signaling protocol family. In more detail, we propose to extend the General Internet Signaling Transport (GIST) protocol, so as to leverage these new dissemination capabilities from all NSIS Signaling Layer Protocol applications using its transport capabilities. The extension consists of two main procedures:...
Network virtualization is one of the foundations for Future Internet architectures, able to catalyze technologies for the solution of classical problems in the IP layer. The work here gives a step forward in that direction, evaluating the performance of different virtual network tools under the perspective of a virtualized IP routing control plane. Two lightweight container-based virtualization systems,...
With the significant increase in the Internet traffic, the uncoordinated routing practices across border gateways are limiting the Internet growth. It is becoming urgent to rethink the principles underlying the Internet infrastructure as well as the design of its major protocols, especially those related to Internet routing and traffic engineering. In its support, an appropriate characterization of...
Intradomain IP routing protocols like OSPF or IS-IS are robust against failures. New fast reroute mechanisms can minimize packet loss directly after an outage by temporarily detouring packets around the failed network element. This buys time for a loop-free convergence, which brings the topology to a new stable path layout without causing temporary micro-loops. We analyze the link utilizations during...
Although possible security threats were taken into consideration when IPv6 was formulated, attacks, especially distributed denial-of-service (DDoS), still exist in IPv6 network. This makes IP trace back schemes very relevant to the security of IPv6 network. As many current IP trace back schemes are designed according to IPv4, they can not be directly used in IPv6 network. A modified Deterministic...
In this paper we show data plane restoration measurements for restoration under backbone link failures for a large network with IP/MPLS OSPF routing and also for the same backbone with Traffic Engineering (TE) and Fast Reroute (FRR) deployed. Our study is unique as we analyzed a significant quantity of measurements obtained from a production network over a 14-month period encompassing many link failures...
This paper proposes a fast-convergence scheme to update metrics avoiding loop in Open Shortest Path Fast (OSPF) networks. In original OSPF networks, when metrics are updated to improve the routing performance, packets may be routed in a loop in transient states. This may cause packet loss and inefficiency in network resources. To avoid transient loops, a conventional scheme gives each router its priority,...
Network operators in large-scale networks are often faced with long lists of maintenance tasks and find it difficult to track the relative importance of these tasks, without knowing their impact on the network's operation. As a result, operators may react slowly to critical tasks, increasing network downtime and maintenance costs. We present a system that quantifies the impact of maintenance tasks...
Traditional IP multicast technology establishes and maintains a tree for each multicast group, and this leads to a serious state scalability problem when large numbers of multicast groups exist in a network. As a novel scheme to address this scalability problem, aggregated multicast forces multiple groups which have identical or similar trees to use one deliver tree. Given the number of multicast...
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