1. First of all MAC addresses have a lot of reserved numbers, so take care
https://www.iana.org/assignments/ethernet-numbers/ethernet-numbers.xhtml
I suggest you to copy first 6 hex numbers from Virtualbox generated MAC
addresses and only setup last numbers. Can’t your program generate proper
MAC addresses? (because if you by mistake use a wrong Broadcast-reserved
MAC address, things will not work).
2.a. Yes, just connect all your VMs either to bridge mode to Ethernet
adapter. (Promiscuous mode = allow all)
VM - Settings - Mode = Bridge, Promiscuous mode = allow all.
2.b. or you can try internal network (a.k.a vSwitch) (called “intnet”) -
mode = Internal network.
2.c. Disable firewall inside VMs (Windows Firewall or Linux iptables)
other notes: Your vRouters may also need a default gateway or a routing
protocol running to connect to each other. Or they are in Layer2
switchmode? If in L2 mode, then default gateway on hosts h1,2 (guests^2,
really) is not required.
best wishes,
On Thu, 13 Sep 2018 at 8:41 Pynbiang Hadem <pynbiang.ha...@yahoo.com> wrote:
> Hi Alexey,
>
> I have now corrected the MAC address with standard values. *The Script
> for VM1 is shown below. A similar script for VM2 is created with hosts h3
> (IP: 10.0.2.1) and h4 (IP: 10.0.2.2).*
>
> class Approach2Topo(Topo):
> def __init__(self, cpu=.1, max_queue_size=None, **params):
> # Initialize topo
> Topo.__init__(self, **params)
> # Hosts and switches
> s1 = self.addSwitch('s1')
>
> h1 = self.addHost('h1')
> h2 = self.addHost('h2')
>
> # Wire h1 and h2 to s1
> self.addLink(h1, s1)
> self.addLink(h2, s1)
>
> def setup():
> topo = Approach2Topo()
> # We use Open vSwitch and OpenFlow 1.3
> switch = partial(OVSSwitch, protocols='OpenFlow13', datapath='user')
> #controller
> net = Mininet(topo, controller=RemoteController,
> switch=switch, cleanup=True)
>
> # Setting up hosts
> net['h1'].setIP('10.0.1.1/24')
> net['h1'].setMAC('00:00:00:00:00:01')
> net['h1'].cmd('route add default gw 10.0.1.100')
>
> net['h2'].setIP('10.0.1.2/24')
> net['h2'].setMAC('00:00:00:00:00:02')
> net['h2'].cmd('route add default gw 10.0.1.100')
>
> # Setting up routers
> net['s1'].setIP('10.0.1.100/24')
> net['s1'].cmd('ifconfig s1-eth3 hw ether 00:00:00:00:00:03')
>
> net.start()
> CLI(net)
> net.stop
>
> How can we establish a connection from host h1 in VM1 to h3 in VM2?. Is
> this possible?.
>
> Thanks
> Hadem
>
> On Monday, 10 September, 2018, 6:28:08 PM IST, Alexey Eromenko <
> al4...@gmail.com> wrote:
>
>
> uhh ohh? are you setting a non standard MAC address? why?
> Anyway there’s so called promiscuous mode, and you need to enable in
> VirtualBox to allow this.
> By default, Virtualbox blocks all unknown MAC addresses.
>
> so your hosts are not hosts at all, they are rather second level guests
> g^2. (VM in VM)
>
> Vbox VM settings, network, promiscuous mode = allow all.
>
> On Mon, 10 Sep 2018 at 14:51 Pynbiang Hadem <pynbiang.ha...@yahoo.com>
> wrote:
>
> Hi Alexey,
>
> I'm running a script as below on each VMs to create the virtual topologies.
>
> from mininet.topo import Topo
> from mininet.net import Mininet
> from mininet.log import setLogLevel
> from mininet.cli import CLI
> from mininet.node import RemoteController
> from functools import partial
> from mininet.node import OVSSwitch
>
> class Approach2Topo(Topo):
> def __init__(self, cpu=.1, max_queue_size=None, **params):
> # Initialize topo
> Topo.__init__(self, **params)
> # Hosts and switches
> s1 = self.addSwitch('s1')
>
> h1 = self.addHost('h1')
> h2 = self.addHost('h2')
>
> # Wire h1 and h2 to s1
> self.addLink(h1, s1)
> self.addLink(h2, s1)
>
> def setup():
> topo = Approach2Topo()
> # We use Open vSwitch and OpenFlow 1.3
> switch = partial(OVSSwitch, protocols='OpenFlow13', datapath='user')
> #controller
> net = Mininet(topo, controller=RemoteController,
> switch=switch, cleanup=True)
>
> # Setting up hosts
> net['h1'].setIP('10.0.1.1/24')
> net['h1'].setMAC('00:00:00:00:01:01')
> net['h1'].cmd('route add default gw 10.0.1.100')
>
> net['h2'].setIP('10.0.1.2/24')
> net['h2'].setMAC('00:00:00:00:01:02')
> net['h2'].cmd('route add default gw 10.0.1.100')
>
> # Setting up routers
> net['s1'].cmd('ifconfig s1-eth3 hw ether 00:00:00:11:11:11')
>
> net.start()
> CLI(net)
> net.stop
>
> Thanks
> Hadem
>
> On Monday, 10 September, 2018, 5:12:32 PM IST, Alexey Eromenko <
> al4...@gmail.com> wrote:
>
>
> what are h1,2,3,4? those are hosts or guests (VMs)? What are r1,r2?
> You have two VMs on separate hosts? (1 guest on each host?)
>
> Bridging guests on hosts Etherenet port will work, if the hosts are
> connected.
>
> -Technologov
>
> On Mon, 10 Sep 2018 at 14:37 Pynbiang Hadem via VBox-users-community <
> vbox-users-community@lists.sourceforge.net> wrote:
>
> Hi Oliver,
>
> I have the following scenario/network environment on the same physical
> system.
>
> VM1: VM2:
> h1 ------------r1 r2-------------h3
> | |
> h2 h4
>
> I want to ping h3 from h1. The above virtual topologies are created using
> custom Mininet/Python scripts. I have also set up internal interfaces on
> both the VMs.
> However ping is not working from h1 to h3.
> Pls advice how to get the ping/connectivity working.
>
> Thanks
> Hadem
> On Monday, 10 September, 2018, 11:51:51 AM IST, Olivier <
> olivier.nic...@cs.ait.ac.th> wrote:
>
>
> > Pls let me know how can i ping a virtual host in one VM from another
> virtual host in another VM.
> > The virual hosts and switches are created by a python script using
> Mininet.
>
>
> If both your VM are created on the same physical system, there should
> not be any reason that prevent it.
>
> If the VM are created on different physical systems, it depends how your
> network is configured: bridged, yes, NATed, no.
>
> Best regards,
>
> Olivier
>
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>
> --
> -Alexey Eromenko "Technologov"
>
> --
> -Alexey Eromenko "Technologov"
>
--
-Alexey Eromenko "Technologov"
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