Re: [Xen-users] Openvswitch

[Jonathan Tripathy <jonnyt@xxxxxxxxxxx>]

On 19/05/10 18:00, Nick Couchman wrote:
> > > > On 2010/05/19 at 07:16, "Jonathan Tripathy"<jonnyt@xxxxxxxxxxx>  wrote:
> > > >          
> > Hi Everyone,
> >
> > Is Openvswitch, which is now in XCP and Xenserver, just a Xen-alternative to
> > VMWare's fancy virtual switches?
> >
> > For example, can I create virtual switches and VLANs "inside" the Xen host?
> >
> > One thing that was nice about VMWare, was that you could create your "own
> > world" inside the box, regarding network layout.
> >
> >      
> Yes, openvswitch is very similar to VMware's Cisco Nexus switch provided with the 
> enterprise-level versions of vSphere.  It allows you to create a full, virtual switch 
> inside your host, rather than relying on things like dom0 bridge support to accomplish 
> domU network access.  It has several advantages: remote administration (ability to 
> remotely configure your switch from a central location), remote monitoring (sFlow/NetFlow 
> support), port mirroring (useful instead of monitoring all of the traffic on a bridge), 
> and quite a bit more.  Additionally, openvswitch is an "openflow" switch, which 
> means you can set up an openflow controller machine (physical or domU) that will actually 
> do all of the traffic directing for your virtual network.
>
> You can create your "own world" inside a box without openvswitch or Cisco 
> Nexus.  On Xen, you can create a local bridge that has no connectivity to a physical 
> ethernet interface, and connect your domUs to that bridge.  This gives you an isolated 
> network on which you can test stuff.  The same thing can be done with VMware.  You don't 
> need a virtual switch on either platform to accomplish this.
>
> -Nick
>
>
>
>
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Hi Nick,

Thanks for the email.

I currently use the free version of VMWare ESXi, and I can make my "own 
world" with it. You say I can do this with XCP, however is it just for 
testing purposes? Is it insecure for production purposes?
Thanks

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