11.8 Global Unicast Routing API

The public API is very minimal. User scripts include the following:

#include "ns3/global-route-manager.h"

After IP addresses are configured, the following function call will cause all of the nodes that have an Ipv4 interface to receive forwarding tables entered automatically by the GlobalRouteManager:

  GlobalRouteManager::PopulateRoutingTables ();

Note: A reminder that the wifi NetDevice is not yet supported (only CSMA and PointToPoint).

It is possible to call this function again in the midst of a simulation using the following additional public function:

  GlobalRouteManager::RecomputeRoutingTables ();

which flushes the old tables, queries the nodes for new interface information, and rebuilds the routes.

For instance, this scheduling call will cause the tables to be rebuilt at time 5 seconds:

  Simulator::Schedule (Seconds (5),&GlobalRouteManager::RecomputeRoutingTables);

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