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Data Center Networks: Topologies, Architectures and by Yang Liu, Jogesh K. Muppala, Malathi Veeraraghavan, Dong

By Yang Liu, Jogesh K. Muppala, Malathi Veeraraghavan, Dong Lin, Mounir Hamdi (auth.)

This SpringerBrief offers a survey of information middle community designs and topologies and compares a number of homes for you to spotlight their merits and drawbacks. The short additionally explores a number of routing protocols designed for those topologies and compares the fundamental algorithms to set up connections, the suggestions used to realize greater functionality, and the mechanisms for fault-tolerance. Readers should be outfitted to appreciate how present examine on facts middle networks permits the layout of destiny architectures which could enhance functionality and dependability of information facilities. This concise short is designed for researchers and practitioners engaged on facts heart networks, comparative topologies, fault tolerance routing, and knowledge middle administration structures. The context supplied and knowledge on destiny instructions also will turn out invaluable for college students attracted to those topics.

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Extra resources for Data Center Networks: Topologies, Architectures and Fault-Tolerance Characteristics

Example text

In other words, a simple algorithm can be executed to determine the output port based on the destination IP address given that the algorithm leverages the structured manner in which addresses are assigned. However, on closer examination, one sees that the nodes at which packet forwarding occurs cannot be off-the-shelf IP routers performing standard longest-prefix matching operations. Instead a new router design1 is required for a two-level lookup. , servers generate IP datagrams carried in Ethernet frames, new routers need to be designed, implemented, and deployed to realize this architecture.

While constructing a BCube1 , n extra switches are used, connecting to exactly one server in each BCube0 . Therefore a BCube1 contains n BCube0 s and n extra switches (If the switches in the BCube0 s are taken into consideration, there are totally 2n switches in a BCube1 ). More generally, a BCubek is constructed from n BCubek 1 s and nk extra n-port switches. These extra switches are connected to exactly one server in each BCubek 1 . In a level-k BCube, each level requires nk switches (each of which is an n-port switch).

1 (Node-disjoint Paths). The minimum of the total number of paths that share no common intermediate nodes between any arbitrary servers. 2 (Edge-disjoint Paths). The minimum of the total number of paths that share no common edges between any arbitrary servers. 3 (f -fault-tolerance [7]). A network is f -fault-tolerant if for any f failed components in the network, the network is still connected. 4 (Redundancy Level [7]). A network has a redundancy level equal to r if and only if, after removing any set of r links, it remains connected, and there exists a set of r C 1 links such that after removing them, the network is no longer connected.

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