Re: [nvrg-bof] poll on charter focus - RESPONSES DUE OCT 23

[James Kempf <james.kempf at ericsson.com>]

Hi Rob,

I guess FlowVisor could rewrite the OpenFlow protocol coming from the virtualized controllers to insert LAN QoS, right? That would enforce isolation for Enterprise GENI.

I was mainly thinking about the WAN case. My understanding from a discussion in the PlanetLab GENI meeting in Seattle is that the plan was to use IP overlays between Enterprise GENI networks.

		jak  

> -----Original Message-----
> From: rob.sherwood at gmail.com [mailto:rob.sherwood at gmail.com] 
> On Behalf Of Rob Sherwood
> Sent: Thursday, October 15, 2009 8:47 AM
> To: James Kempf
> Cc: Thomas Narten; Joe Touch; nvrg at listserv.gwdg.de
> Subject: Re: [nvrg-bof] poll on charter focus - RESPONSES DUE OCT 23
> 
> My preference is for the group to concentrate on network 
> rather than systems virtualization, but I also definitely 
> agree with Thomas.
> 
> On Mon, Oct 12, 2009 at 8:15 AM, James Kempf 
> <james.kempf at ericsson.com> wrote:
> > Another topic is "over the top" v.s. "close to the metal" 
> network virtualization. Talking to GENI researchers, they 
> seem to be planning to run virtualized networks as overlays 
> like X-Bone was. This is in contrast to the, shall we say, 
> "original promise" of virtualized networks, which is that 
> they provide isolation between traffic on different "slices". 
> Providing isolation while still providing the cost benefits 
> of statistical multiplexing, especially across service 
> providers, is a challenging research problem. Most L2 VPNs 
> with service guarantees are expensive and time consuming to 
> provision and confined to a single provider, which is 
> probably why academic researchers aren't planning on using 
> them. And statistical multiplexing is not possible because 
> the VPN customers ping constantly to make sure they are 
> getting their SLAs fufilled.
> 
> Fwiw, I'm working in GENI with my FlowVisor virtualization 
> layer project (tech report newly available at 
> http://www.openflowswitch.org/wk/index.php/FlowVisor if 
> anyone is interested), and while I'm not sure where you draw 
> the line between "over the top" vs. "close to the metal", 
> FlowVisor (intuitively to me at least) would seem to run 
> close to the metal and is not really an overlay like X-Bone.
> 
> Cheers,
> 
> - Rob
> .
>