1. John Conway Bonn, Sept 20th, 2007
WP1.2.3 Progress
John Conway
Bonn, Sept 20th, 2007

2. Overview 1 iBoB and 1 iADC ordered, arrival mid-October??
Jodrell-Metsahovi to do digital electronics firmware – Onsala to provision link for 4Gbps test to eMERLIN, main deliverable fringes
Have decided to do fringe test at 1.3cm using Onsala 20m
Present recent discussions-progress on link issue
Also will employ 1 man-year from Nov/Dec, soon to advertise

3. Discussions with SUNET/NORDUnet
Held a meeting at Arlanda airport, Stockholm, June 12th, myself, SUNET and NORDUnet heads, + Richard Hughes-Jones from Manchester
Very successful. SUNET wants users for lightpaths on its newly installed 40G hybrid network.
Offered to install equipment free of charge at Onsala and Chalmers to light a lightpath on our dark fibre, to enable Onsala-Stockholm 10G lightpath
No need to pay SUNET while in test phase in 2008, would have to pay if used operationally (e.g LOFAR, eMERLIN). Likewise NORDUnet to arrange test time (few days per month) to UK.
10G equipment to be installed at Onsala and Chalmers on Tuesday 6th November

4. NORDUnet Proposal
Objective is to build a network based on user controled point to point (PtP) connections between Onsala and Metsahovi and correlators at Dwingeloo, Manchester,Groningen.
Initial required bandwidth 4 Gbps
Client line interface 10 GE Lan/Phy
National Connectivity
SUNET
Funet
SURFnet
Ukerna
Cross boarder Connectivity
NORDUnet
Will be a User Controled Light Path (UCLP) network

5. PROPOSED - General Topology

6. Expected Ready For Service Date – November 2007? NORDUnet questions
How will Janet deliver the interconnection between Jodrell Bank and NORDUnet Co-Hosted at LINX
Will SURFnet deliver the interconnection between Dwingloo and SURFnet
Will SURFnet deliver the interconnection between Groningen and SURFnet
Who will delivere the interconnection between Metsahov and NORDUnet (FUnet)
Client Interface types – NORDUnet presuemes it is 10 GE LAN/PHY
Will each Radio Telescope/NREN be a pure Layer 2 or will it requieres routing
Plan next meeting Oct 31st Copenhagen, invite UK, Dutch NRENs.

7. Chalmers
Multi mode digital
20m
Analog over fibre
Single mode digital
10G lightpath
1G General traffic
1G switched VLBI
Coax
iADC
VLBI’
Mk5
New
Offices
iBoB
25m
CX4
Ciena
Switch
LR-10G
LR-10G?
CX4?
LOFAR
PC+10G card
Onsala Local Network plan
November 2007
General Obs traffic

8. Test schedule/Timeline
Envision PC to PC, iBob to PC, iBOB to iBOB tests.
Done either of Onsala-Metsahovi or Onsala-Jodrell Bank routes
Final timeframe for fringes depends on delivery of eMERLIN correlator
Also investigate fringes to LOFAR (using our present 4 LBA setup, or full LOFAR station if
funded in 2008 (will know end of November)