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@cern.ch]
Sent: 08 February 2007 16:49
To: Kristina Ulrika Gunne; Stephen.Pickles@manchester.ac.uk;
ogf20pc@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@manchester.ac.uk; ogf20pc@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@manchester.ac.uk]
Sent: 08 February 2007 14:29
To: ogf20pc@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@manchester.ac.uk
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