public int addChannel(String id1, String id2, float tr, float dp){
        int index = 0;
        Nodo source = null, destination = null;
        while(index < _network.size() && (source == null || destination == null)){
            if(source == null && _network.elementAt(index).getId().equals(id1)){
                source = _network.elementAt(index);
            }
            else if(destination == null && _network.elementAt(index).getId().equals(id2)){
                destination = _network.elementAt(index);
            }
            index++;
        }
        if(source==null || destination==null) return FAIL_ADD;
        
        source.createChannelWith(destination, tr, dp);
        System.out.println("+Channel de "+source.getId()+" a "+destination.getId()+" agregado a la red.");
        return SUCCESFUL_ADD;
    }