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OMNeT++ Routing Examples
Details on OMNeT++ Routing Examples
OMNET++ ROUTING EXAMPLES – What is Routing? OMNeT++ Routing Example With Source code? Detailed Information on OMNeT++ Routing Examples?
Routing is the process of moving packets across a network from one host to another. It is usually performed by dedicated devices called routers. Routing is a key feature of the Internet and it, together with a great deal of deliberate redundancy of high capacity transmission lines
- Completed OMNeT++ Routing Protocol Projects 72%
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Goals of routing:
- Stability.
- Fairness.
- Correctness.
- Optimality.
- Simplicity.
- Robustness.
Classification routing algorithm:
- Hierarchical routing
- Adaptive routing
- Distributed
- Centralized
- Isolated
- Backward learning
- Hot potato
- Delta routing
- Non-adaptive routing
- Flooding
- Spanning tree
- Sequence number
- Hop count
- Flooding
- Random walk
Sample code for routing:
void RoutingTable::addRoute(IPv4Route *entry)
{
Enter_Method(“addRoute(…)”);
internalAddRoute(entry);
invalidateCache();
updateDisplayString();
nb->fireChangeNotification(NF_IPv4_ROUTE_ADDED, entry);
}
IPv4Route *RoutingTable::internalRemoveRoute(IPv4Route *entry)
{
RouteVector::iterator i = std::find(routes.begin(), routes.end(), entry);
if (i!=routes.end())
{
routes.erase(i);
return entry;
}
return NULL;
}
IPv4Route *RoutingTable::removeRoute(IPv4Route *entry)
{
Enter_Method(“removeRoute(…)”);
entry = internalRemoveRoute(entry);
if (entry != NULL)
{
invalidateCache();
updateDisplayString();
ASSERT(entry->getRoutingTable() == this); // still filled in, for the listeners’ benefit
nb->fireChangeNotification(NF_IPv4_ROUTE_DELETED, entry);
entry->setRoutingTable(NULL);
}
return entry;
}
bool RoutingTable::deleteRoute(IPv4Route *entry)
{
Enter_Method(“deleteRoute(…)”);
entry = internalRemoveRoute(entry);
if (entry != NULL)
{
invalidateCache();
updateDisplayString();
ASSERT(entry->getRoutingTable() == this); // still filled in, for the listeners’ benefit
nb->fireChangeNotification(NF_IPv4_ROUTE_DELETED, entry);
delete entry;
}
return entry != NULL;
}
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