$ns_ node <optional:hier address>

This command is used to create a mobilenode after node configuration is done as shown in the node-config command. Incase

hierarchical addressing is being used, the hier address of the node needs to be passed as well.

$node log-movement

This command previously used to enable logging of mobilenode’s movement has now been replaced by $ns_node-config -movementTrace <ON or OFF>.

create-god <num_nodes>

This command is used to create a God instance. The number of mobilenodes is passed as argument which is used by God to

create a matrix to store connectivity information of the topology.

$topo load_flatgrid <X> <Y> <optional:res>

This initializes the grid for the topography object. <X> and <Y> are the x-y co-ordinates for the topology and are used for sizing the grid. The grid resolution may be passed as <res>. A default value of 1 is normally used.

$topo load_demfile <file-descrptor>

For loading DEMFile objects into topography. See ns/dem.cc,.h for details on DEMFiles.

$ns_ namtrace-all-wireless <namtrace> <X> <Y>

This command is used to initialize a namtrace file for logging node movements to be viewed in nam. The namtrace file descriptor, the X and Y co-ordinates of the wireless topology is passed as parameters with this command.

$ns_ nam-end-wireless <stop-time>

This command is used to tell nam the simulation stop time given by <stop-time>.

$ns_ initial_node_pos <node> <size>

This command defines the node initial position in nam. <size> denotes the size of node in nam. This function must be called after mobility model has been defined.

$mobilenode random-motion <0 or 1>

Random-motion is used to turn on random movements for the mobilenode, in which case random destinations are assigned to the node. 0 disables and 1 enables random-motion.

$mobilenode setdest <X> <Y> <s>

This command is used to setup a destination for the mobilenode. The mobile node starts moving towards destination given by <X> and <Y> at a speed of <s> m/s.

$mobilenode reset

This command is used to reset all the objects in the nodes (network components like LL, MAC, phy etc).Internal procedures Following is a list of internal procedures used in wireless networking:

$mobilenode base-station <BSnode-hier-addr>

This is used for wired-cum-wireless scenarios. Here the mobilenode is provided with the base-stationnode info for its domain. The address is hierarchical since wired-cum-wireless scenarios typically use hierarchical addressing.

$mobilenode log-target <target-object>

The <target-object>, which is normally a trace object, is used to log mobilenode movements and their energy usage, if energy model is provided.

$mobilenode topography <topoinstance>

This command is used to provide the node with a handle to the topography object.

$mobilenode addif

A mobilenode may have more than one network interface. This command is used to pass handle for a network interface to

the node.

$mobilenode namattach <namtracefd>

This command is used to attach the namtrace file descriptor <namtracefd> to the mobilenode. All nam traces for the node are then written into this namtrace file.

$mobilenode radius <r>

The radius <r> denotes the node’s range. All mobilenodes that fall within the circle of radius <r> with the node at its center are considered as neighbours. This info is typically used by the gridkeeper.

$mobilenode start

This command is used to start off the movement of the mobilenode.