[ogf20pc] Network question

[Stephen M Pickles]

Hi Massimo,

In general, I would have thought that demos would not
require inbound connectivity. I'm trying to flush out
any exceptions to the general case now.

We are already planning on wired connections to the 
demonstrations. There will be some cost implications due
to cabling and ducting and getting wires to each demonstration
and each exhibition booth that needs it. (The cost is not
negligible if the venues' default costing model -- per each --
is applied, so we'll have to work on that.)

We're negotiating on the basis of 1 Gbps.
This is consistent with scaling up usage traces from
OGF19 last week, and assuming that GGF16 was over-provisioned
at 2 x 1 Gbps.

Stephen

> -----Original Message-----
> From: Massimo Lamanna [mailto:Massimo.Lamanna at cern.ch] 
> Sent: 08 February 2007 16:49
> To: Kristina Ulrika Gunne; Stephen.Pickles at manchester.ac.uk; 
> ogf20pc at ogf.org; Steven Newhouse
> Cc: Erwin Laure; Massimo Lamanna
> Subject: RE: Network question
> 
>  Hi Stephen et al.,
> In general we do not require inbound connectivity.
> The typical pattern is connecting and driving the demo via a 
> web service
> located elsewhere.
> 
> I would like that the connection for demo (~20) could be 
> copper instead
> of wifi to protect them from network instabilities. Since anyway a
> "cable" has to pulled to the exhibition room, this should not 
> add to the
> complexity (and cost) in any significant way.
> 
> I agree on the assumption of IPv4 only.
> 
> What is the uplink capacity you are negotiating?
> 
> With my best regards,
> Massimo
> 
> -----Original Message-----
> From: Kristina Ulrika Gunne 
> Sent: Thursday, February 08, 2007 14:31
> To: Stephen.Pickles at manchester.ac.uk; ogf20pc at ogf.org; Steven Newhouse
> Cc: Massimo Lamanna; Erwin Laure
> Subject: RE: Network question
> Importance: High
> 
>  Hi Stephen,
> 
> I forward this request to the more technical people who I hope can
> answer  your questions.
> 
> Best regards,
> 
> Kristina
> 
> -----Original Message-----
> From: Stephen M Pickles [mailto:Stephen.Pickles at manchester.ac.uk]
> Sent: 08 February 2007 14:29
> To: ogf20pc at ogf.org; Kristina Ulrika Gunne; Steven Newhouse
> Subject: Network question
> 
> All,
> 
> A question has arisen regarding the network provision at OGF20 and
> EGEE-UF 2.
> 
> Is anyone likely to be running a demonstration in the exhibition that
> will involve incoming connections?
> 
> We need to be able to provide up to 900 or so IP addresses.
> If all connections will be outgoing, it should be possible to do this
> using Network Address Translation. If some connections will 
> be incoming,
> then it is likely that real IP addresses will be needed.
> 
> An early response will be very helpful. Obtaining 900+ real 
> IP addresses
> will require some negotiation and cannot be guaranteed at this stage.
> Adopting a hybrid solution of NAT for wireless and real IP 
> addresses for
> wired ethernet to the booths is possible, but would add complexity to
> the network design and configuration.
> 
> Stephen
> 
> PS We're assuming IPV6 will not be required.
> 
> ==================== Stephen M. Pickles ====================
> 
> Technical Director, National Grid Service Manchester Computing Room
> G49.1, Kilburn Building
> The University of Manchester           tel: +44 161 275 5974
> Oxford Road                            fax: +44 161 275 6800
> Manchester M13 9PL          stephen.pickles at manchester.ac.uk 
> 
> 
>