Getting "destination host unreachable message" while pinging two hosts connected to two different switches under the control of two different remote controllers in mininet virtual network.

[bharga...@gmail.com]

Hi All,

I created a virtual network consists of 

Two remote controllers c1,c2.

Two switches (s1,s2):s1 is under the control of c1,s2 is under the control of c2.s1 and s2 are connected to each other.

Two hosts (h1,h2):h1 is cnnected to s1,h2 is connected to s2.

in mininet using python script.

c1    c2

/        \

s1----- s2

/          \

h1       h2

when I was pinging by giving h1 ping h2 command at mininet CLI ,it was giving destination host unreachable.

Please let me know why it is giving destination host unreachable and how to get connectivity between h1 and h2.

[Christian Esteve Rothenberg]

Please share the ipconf configuration of h1 and h2, as well as the ipconf of the LXC containers in each routeflow instance plus the dump-flow output of s1 and s2

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Christian

[bharga...@gmail.com]

On Saturday, April 26, 2014 11:14:32 PM UTC+5:30, Christian Esteve Rothenberg wrote:

Please share the ipconf configuration of h1 and h2, as well as the ipconf of the LXC containers in each routeflow instance plus the dump-flow output of s1 and s2

On Sat, Apr 26, 2014 at 7:26 AM, <bharga...@gmail.com> wrote:

Hi All,

I created a virtual network consists of 

Two remote controllers c1,c2.

Two switches (s1,s2):s1 is under the control of c1,s2 is under the control of c2.s1 and s2 are connected to each other.

Two hosts (h1,h2):h1 is cnnected to s1,h2 is connected to s2.

in mininet using python script.

c1    c2

/        \

s1----- s2

/          \

h1       h2

when I was pinging by giving h1 ping h2 command at mininet CLI ,it was giving destination host unreachable.

Please let me know why it is giving destination host unreachable and how to get connectivity between h1 and h2.

Iam posting my python script for mininet topology.

#! /usr/bin/python

# w...@ateneo.edu

#

import sys

import os

from mininet.net import Mininet

from mininet.node import Controller, OVSKernelSwitch, RemoteController

from mininet.cli import CLI

from mininet.log import setLogLevel, info

from mininet.node import CPULimitedHost

from mininet.link import TCLink

from mininet.util import dumpNodeConnections

#from mininet.util import createLink

def createControllerNetwork():

    info( '*** Creating network for Controller Example' )

    # Create an empty network.

    net=Mininet(controller = RemoteController, switch = OVSKernelSwitch ,host=CPULimitedHost, link=TCLink)

    c1 = net.addController('c1', controller=RemoteController, ip="10.132.35.14", port=6633)

    c2 = net.addController('c2', controller=RemoteController, ip="10.132.35.15", port=6633)

    # Creating nodes in the network.

    h1 = net.addHost('h1',ip = '10.0.0.1')

    h2 = net.addHost('h2',ip = '10.0.0.2')

  s1 = net.addSwitch('s1',mac = '00:00:00:00:00:01')

    s2 = net.addSwitch('s2',mac = '00:00:00:00:00:02')

    #Creating links between nodes in network.

    info( '\n*** bw latency h1<->s1:' )

    net.addLink(h1, s1,bw=1, delay='5ms', use_htb=False)

    info( '\n*** bw latency h2<->s2:' )

    net.addLink(h2, s2,bw=1, delay='5ms', use_htb=False)

    info( '\n*** bw latency s1<->s2:' )

    net.addLink(s1, s2,bw=10, delay='5ms', use_htb=False)

   # Start network

    info( '\n' )

    net.build()

    # Attaching Controllers to Switches

    c1.start()

    c2.start()

    s1.start([c1])

    s2.start([c2])

    # dump stuff on the screen

    info( '\n*** Network state:' )

    for node in c1,c2,s1,s2,h1,h2:

        info( str( node ) + ' ' )

        info( '\n')

    CLI(net)

if __name__ == '__main__':

    setLogLevel( 'info' )

    createControllerNetwork()