Host mobility u Access control policies u Network troubleshooting The Beauty of

Host mobility u access control policies u network

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Host mobility u Access-control policies u Network troubleshooting The Beauty of Ethernet 17 CSE 222A – Lecture 8: Data Center Networks
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Flooding-based delivery u Frames to unknown destinations are flooded Broadcasting for basic service u Bootstrapping relies on broadcasting u Vulnerable to resource exhaustion attacks Inefficient forwarding paths u Loops are fatal due to broadcast storms; uses STP u Forwarding along a single tree leads to inefficiency and lower utilization Ethernet Scaling Challenges 18 CSE 222A – Lecture 8: Data Center Networks
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Enterprise networks comprised of Ethernet-based IP subnets interconnected by routers R R R R Ethernet Bridging - Flat addressing - Self-learning - Flooding - Forwarding along a tree IP Routing (e.g., OSPF) - Hierarchical addressing - Subnet configuration - Host configuration - Forwarding along shortest paths R Broadcast Domain (LAN or VLAN) Traditional L2/L3 Model 19 CSE 222A – Lecture 8: Data Center Networks
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For Next Class… Read PortLand paper Work on project proposals u Details available on the course Web page 20 CSE 222A – Lecture 8: Data Center Networks
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  • Fall '08
  • Vahdat,A
  • IP address, Router, Network switch, Subnetwork

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