Hi
Thanks a lot for reply..
> I am running CPqD switch (soft switch) on bare metal machine with Ubuntu
> > 14.04 machine. I created 2 tap interfaces on the machine
> >
> > tunctl -u root -t h1
> >
> > tunctl -u root -t h2.
>
> Are you running your guests as root? I wouldn't advise this long term,
> but it's probably ok as an experiment.
>
>
> > I attached these interfaces to the soft switch. Interfaces are attached,
> > can see them in the switch's CLI. I created 2 VMs each with NAT,
> host-Only
> > and Bridged adapter.
>
> Why? What are you trying to achieve?
>
What I want is the packets should flow through the switch. The switch is
attached to OpenDayLight SDN controller. The flows into the switch will de
added by the controller when the hosts ping each other.
>
> > Configured bridged adapters with IPs 10.0.0.1 (VM1)
> > and 10.0.0.2 (VM2). No VMs can ping each other (Destination Host Not
> > Reachable).
>
> What are the bridged adapters bridged to on the host? The two tap
> interfaces you mentioned earlier, or something else? From your diagram
> below, it seems like your guests' bridge adapters are bridged to the
> tap devices, which are connected to your softswitch. Seeing the
> configuration of your softswitch, and the network configuration inside
> each guest might help diagnose this.
>
Yes, the bridged adapters are bridged to the tap interfaces connected the
switch. Switch has no IP assigned so the VMs aren't getting IP. I have
tried with only Bridged adapter in VMs and ping returns with Destination
Host Not Reachable.
>
> >
> > P.S. I also tried assigning IPs 127.0.0.2 and 127.0.0.3, 10.107.a.b and
> > 10.107.c.d to VMs. NO success.
> >
>
> Your guests aren't going to communicate if they aren't on the same subnet,
> or if there isn't a route between separate subnets. I'm guessing you
> want both guests on 10.107.a, instead of on different subnets. Without
> understanding what you want to do though, this is just a guess, and it
> could be wrong. You seem to be on the right track with 10.0.0.1, and
> 10.0.0.2.
>
> >
> > VM1 ---------------switch ----------------- VM2
> >
> > (Bridged h1) h1 h2 (Bridged h2)
>
> You seem to be on the right track, but without seeing the
> configuration of your switch, and each of your guests, that's probably
> as far as I can help you. Since you're using NAT for some reason, your
> guests are probably using that as your default gateway, and may be
> trying to route traffic meant for the bridge through NAT.
>
> Greg
>
>
> > Janki Chhatbar
> > M.Tech (Embedded Systems)
> > Nirma University
> > (+91) 9409239106
>
> >
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