Advanced Computer Networks

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Presentation transcript:

Advanced Computer Networks CS716 Advanced Computer Networks By Dr. Amir Qayyum 1

Lecture No. 44

Overlay Networks

Overlay Network Layered on Top of a Physical Network

Overlay Nodes Tunnel Through Physical Nodes

Multicast Trees Mapped Onto a Physical Topology B C D R1 R2 50 5 (a) (b) (c) (d) Multicast Trees Mapped Onto a Physical Topology

Multicast Tree Embedded in an Overlay Mesh

Triangular Inequality in Networks

Peer to Peer Network

128-bit Nodes and Objects ID Space objid nodeids 2 128 - 1

Locating Object by Routing

Routing Table at Nodes

Adding Node to the Network

Content Distribution Network Site A Site B Site C aaa.com bbb.com ccc.com Ba cken d server s Ca ch e Geogra ph ically distri bu te d su rro ga te server s Re di rect or s Cl ie nt s