crea un isp en un script para una topologia de red en mininet

Aquí te muestro un ejemplo de cómo crear un ISP en una topología de red en Mininet utilizando Python:

```python
from mininet.topo import Topo
from mininet.net import Mininet
from mininet.node import Node
from mininet.link import TCLink
from mininet.util import dumpNodeConnections

class ISP(Topo):
    def __init__(self):
        # Llamar al constructor de la clase padre
        super(ISP, self).__init__()

        # Crear los nodos
        self.core = self.addSwitch('core')
        self.edge1 = self.addSwitch('edge1')
        self.edge2 = self.addSwitch('edge2')
        self.edge3 = self.addSwitch('edge3')
        self.edge4 = self.addSwitch('edge4')
        self.edge5 = self.addSwitch('edge5')
        self.edge6 = self.addSwitch('edge6')
        self.edge7 = self.addSwitch('edge7')
        self.edge8 = self.addSwitch('edge8')
        self.edge9 = self.addSwitch('edge9')
        self.edge10 = self.addSwitch('edge10')

        # Crear los enlaces entre los nodos
        self.addLink(self.core, self.edge1, bw=1000, delay='10ms')
        self.addLink(self.core, self.edge2, bw=1000, delay='10ms')
        self.addLink(self.core, self.edge3, bw=1000, delay='10ms')
        self.addLink(self.core, self.edge4, bw=1000, delay='10ms')
        self.addLink(self.core, self.edge5, bw=1000, delay='10ms')
        self.addLink(self.core, self.edge6, bw=1000, delay='10ms')
        self.addLink(self.core, self.edge7, bw=1000, delay='10ms')
        self.addLink(self.core, self.edge8, bw=1000, delay='10ms')
        self.addLink(self.core, self.edge9, bw=1000, delay='10ms')
        self.addLink(self.core, self.edge10, bw=1000, delay='10ms')

        self.addLink(self.edge1, self.edge11, bw=100, delay='5ms')
        self.addLink(self.edge2, self.edge12, bw=100, delay='5ms')
        self.addLink(self.edge3, self.edge13, bw=100, delay='5ms')
        self.addLink(self.edge4, self.edge14, bw=100, delay='5ms')
        self.addLink(self.edge5, self.edge15, bw=100, delay='5ms')
        self.addLink(self.edge6, self.edge16, bw=100, delay='5ms')
        self.addLink(self.edge7, self.edge17, bw=100, delay='5ms')
        self.addLink(self.edge8, self.edge18, bw=100, delay='5ms')
        self.addLink(self.edge9, self.edge19, bw=100, delay='5ms')
        self.addLink(self.edge10, self.edge20, bw=100, delay='5ms')

        self.addLink(self.edge11, self.edge21, bw=10, delay='1ms')
        self.addLink(self.edge12, self.edge22, bw=10, delay='1ms')
        self.addLink(self.edge13, self.edge23, bw=10, delay='1ms')
        self.addLink(self.edge14, self.edge24, bw=10, delay='1ms')
        self.addLink(self.edge15, self.edge25, bw=10, delay='1ms')
        self.addLink(self.edge16, self.edge26, bw=10, delay='1ms')
        self.addLink(self.edge17, self.edge27, bw=10, delay='1ms')
        self.addLink(self.edge18, self.edge28, bw=10, delay='1ms')
        self.addLink(self.edge19, self.edge29, bw=10, delay='1ms')
        self.addLink(self.edge20, self.edge30, bw=10, delay='1ms')

def crear_red():
    # Crear la red
    topo = ISP()
    net = Mininet(topo=topo, link=TCLink)

    # Iniciar la red
    net.start()

    # Imprimir las conexiones de los nodos
    dumpNodeConnections(net.hosts)

    # Esperar 2 segundos
    import time
    time.sleep(2)

    # Detener la red
    net.stop()

if __name__ == '__main__':
    crear_red()
```

Este script crea una topología de red con un nodo central (core) que se conecta a 10 nodos periféricos (edge1 a edge10). Cada nodo periférico se conecta a 10 nodos más pequeños (edge11 a edge20). Estos nodos más pequeños se conectan a 10 nodos aún más pequeños (edge21 a edge30).

La red se inicia con `net.start()` y se detiene con `net.stop()`. Durante la ejecución de la red, se imprime las conexiones de los nodos con `dumpNodeConnections(net.hosts)`.

Ten en cuenta que esta es solo una ejemplo y que puedes personalizar la topología de red según tus necesidades.