Nodes with different System Ids run on different cluster machines.Nodes in the simulation assigned different System Ids.Library (and protocol) for distributed applications.Several ongoing attempts, none yet integrated.Running routing daemons on NS-3 (planned).Special ELF loader converts POSIX API calls into NS-3 calls.Run unmodified POSIX programs under simulation.Run Linux Kernel TCP/IP stack under simulation.Simulation events synchronized to ”wall clock time”.Packets can be saved to PCAP files, in a real format.Allow to report events across non-contiguous layers.Small units of information attached to packets.New features can be easily added in the future.wired netdevices do not need to know the node position at all No memory waste in IPv4 stack for nodes that don't need it.Nodes have optional features (sort of AOP).Reduces the memory footprint of the simulation.No memory is allocated for virtual zero bytes.For dummy application data that we don't care about.Packets can have ”virtual zero bytes” (or dummy bytes). node mobility Events Scheduler Time arithmetic common simulator core Packets Packet Tags Packet Headers Pcap/ascii file writing Smart pointers Dynamic type system Attributes Callbacks, Tracing Logging Random Variables Mobility Models (static, random walk, etc.) NS-3 Modules Node class NetDevice ABC Address types (IPv4, MAC, etc.) Queues Socket ABC IPv4 ABCs Packet Sockets helper Routing: olsr,global-routing Internet-stack (ipv4 impl.) Devices: csma | wifi |.
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