[libvirt-users] unable to ping from guests in virbr0 to guests in virbr1 network

[mallapadi niranjan]

On Mon, Nov 19, 2012 at 7:05 PM, Rudy Godoy <rudy at stone-head.org> wrote:

> On Mon, Nov 19, 2012 at 12:09:53PM +0530, mallapadi niranjan wrote:
> > Hi all,
> >
> > I have 3 guests (2-RHEL4 and 1 RHEL6) and have some issues regarding
> > networking between them. The 2 RHEL4 system's use default bridge virbr0
> and
> > get ip's of range 192.168.122.0/24  (192.168.122.207, 192.168.122.167)
> >
> > I created another bridge (virbr1) with NAT forwarding (no dhcp). The
> > network i choose was 192.168.100.0/24. And the third system (RHEL6) was
> > assigned static ip-addres 192.168.100.101,
> >
> > >From the RHEL6 system which uses virbr1 is able to ping systems in
> > 192.168.122.0/24 series , but  guest systems in 192.168.122.0/24 are not
> > able to ping RHEL6 system (in virbr1) network.
> >
> > >From the RHEL4 guests i am able to ping the gateway ip's (192.168.122.1,
> > 192.168.100.1) , but not the RHEL6 system
> >
>
> That's correct behavior, because the networks are in different ranges
> they need to have a way to talk to each other, either via a gateway or
> fixed routing.
>

ok


>
> btw, Why do you need your hosts in separate networks?
>

I have a special requirement where i need guests from different networks
(subnets) to need to communicate each other.

You may want to check this page on libvirt networking.
> http://wiki.libvirt.org/page/VirtualNetworking
>
> regards.
>
> --
> Rudy Godoy
> http://stone-head.org
>
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