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Satellite networks can provide worldwide-coverage wireless data gram services, but cause great challenges for how to efficiently route data gram. The Low Earth Orbit (LEO) satellite is becoming an essential part of the Next-Generation internet with short round-trip delay and low power consumption. In this paper, we propose a routing algorithm for LEO satellite constellation networks with high performance...
Root cause analysis of BGP updates is the key to debug and troubleshoot BGP routing problems. However, accurately inferring what is the cause of routing instability and where it originate is very hard. In this paper, we present a novel approach to locate the origin of routing instability by analyzing the relationship of the closed loops formed by intersecting the all the paths in path exploration...
With increasing development of forwarding network, the configuration and management of so many distributed devices has become a great challenge. This has motivated a renewed interest in centralized control of routing network. It enables the control-plane functionalities to be centralized on specific network devices in order to separate from packet forwarding. As a result of centralized control, the...
Satellites can broadcast datagram over a wide area, even to the areas that cannot be well served by the existing terrestrial infrastructures. Therefore, it is a hot research topic about how to multicast datagram over satellites. Low Earth Orbit (LEO) satellites have short round-trip delay and low power consumption, it will be an essential part of future multimedia communication application. In this...
As the network technology and applications continue to evolve, computer networks become more and more important. However, network users can attack the network infrastructure (such as domain name service and routing services, etc.). The networks can not provide the minimum required quality of service for control. Network situation can not be aware in a timely manner. And network maintaining and upgrading...
Root cause analysis of BGP updates is the key to debug and troubleshoot BGP routing problems. However, inferring the root cause with high accuracy is challenge. Although correlating multiple vantage points is a validate method, how many vantage points are truly necessary to pinpoint the root cause is not resolved. In this paper, we propose a new method to explore two independent vantage points to...
Most ISPs rely on their upstream providers in achieving global reachability, thus they tend to make backup upstream links for the purpose of improving their own resilience. Yet, the Internet AS topology does not entail as much redundancy as it is widely thought, e.g., in our observation, 23.6% of all ASes only have single provider. Moreover, even though an AS has multiple upstream links, if all its...
In the challenged networks, such as interplanetary networks, satellite networks, military networks and so on, a complete path from the source to the destination does not exist for most of the time. The lack of end-to-end path makes the message delivery a great challenge in these networks. In this paper, we propose the spray and routing message delivery mechanism, which combines the simplicity of epidemic...
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