Modify a field in the routing table

[Maroua]

Hi everyone,

I want to modify the routing table. 

here is my code :

Ptr<Node> node = this->GetObject<Node> ();

Ptr<Ipv4> ipv4 = this->GetObject<Ipv4> ();

Ptr<Ipv4RoutingProtocol> rProto = ipv4->GetRoutingProtocol ();

Ptr<OutputStreamWrapper> routingStream = Create<OutputStreamWrapper> (&std::cout);

rProto->RoutingTable().DeleteRoute ("192.168.1.7");

rProto->PrintRoutingTable(routingStream);

erreur: ‘class ns3::Ipv4RoutingProtocol’ has no member named ‘RoutingTable’

I couldn't alter the table.

Can anybody provide me an idea or a suggest? 

Thank you in advance.

[Maroua]

Hi all

No answer has come to that effect yet.

If it is not possible to change in the routing tables.Does anyone know?  because I lost a lot of time searching without result.

[Tommaso Pecorella]

Hi Maroua,

no offense, but you'll not receive any answer until you'll post a meaningful question.

Please read the posting guidelines.

Thanks,

T.

[Maroua]

hi,

I want to modify the routing table at the transport layer (udp-l4-protocol.cc). I use the DSDV protocol. 

I got the Ipv4 object and the routing protocol(DSDV) as shown in the code below. But i was unable to change in the routing table !! ( Delete the route for example). 

here is my code (the code written in blue and the red text indicates the error) :

[Konstantinos]

Hi Maroua,

First of all, the error you got is very simple to understand and it's plain programming.

See some comments inline:

On Monday, April 11, 2016 at 2:21:41 PM UTC+1, Maroua wrote:

hi,

I want to modify the routing table at the transport layer (udp-l4-protocol.cc). I use the DSDV protocol. 

I got the Ipv4 object and the routing protocol(DSDV) as shown in the code below. But i was unable to change in the routing table !! ( Delete the route for example). 

here is my code (the code written in blue and the red text indicates the error) :

Ptr<Node> node = this->GetObject<Node> ();

Ptr<Ipv4> ipv4 = this->GetObject<Ipv4> ();

Ptr<Ipv4RoutingProtocol> rProto = ipv4->GetRoutingProtocol ();

Here you got a reference to the Ipv4RoutingProtocol object (the base class) not the DSDV. 

If you do not understand the difference, I would suggest to study a C++ primer on inheritance. 

 

Ptr<OutputStreamWrapper> routingStream = Create<OutputStreamWrapper> (&std::cout);

rProto->RoutingTable().DeleteRoute ("192.168.1.7");

The error is here, there is no member function called RoutingTable(). 

There is a class ns3::dsdv::RoutingTable but there is no public API to access it. 

I have comment on this on another thread, you need to change that.

[Maroua]

Thank you very much for your answer 

I know that the error is in this line of code : Proto->RoutingTable().DeleteRoute ("192.168.1.7");

The routing table function are all private!!  how can i use it in this case???

How can i change this line to becomes functional???

Please help me.

[Konstantinos]

I told you the solution... make a public API to get access to the routing table. 
For example have a look at the API of Ipv4StaticRouting