Networking Issues
David Salmon
UKERNA/GNT
D.Salmon@ukerna.ac.uk
SuperJANET4 architecture
UHI
ClydeNet
C&NL
MAN
N.I.
MAN
AbMan
EastMAN
Glasgow Edinburgh
NNW
NORMAN
North Wales
MidMAN
YHMAN
Leeds
Warrington
Reading
London
Thames
Valley
EMMAN
EastNET
LMN
Bristol
South
Wales
Portsmouth
Kentish
MAN
LINX
GEANT &
USA
LeNSE
SWERN
7 February 2003
NeSC visit
2
Implementation
•
•
backbone
linking C-PoPs
access links
to regional
networks
(MANs)
7 February 2003
NeSC visit
3
C-PoPs and BARs
Access Link
Cisco
12016
SDH
ADM
Cisco
12008
or
12016
Backbone
C-PoP
7 February 2003
SDH
ADM
MAN
BAR
NeSC visit
4
SJ4 Development Network
Leeds
Warrington
MB-NG
Manchester
(DL)
Reading
2.5 Gbps
London
RAL
ULCC
7 February 2003
NeSC visit
UCL
5
Bandwidth in the backbone
10 + (10) Gbps
2.5 Gbps
155 Mbps
1999
•
2001
2002
2003
requirements for 2003-2005?
• discussions within JCN
7 February 2003
NeSC visit
6
JANET’s External connections
• Global access
• 2 (3) * 2.5Gbps UK based transit to
Global Internet – commodity traffic
• Bandwidth to Europe
• GÉANT — 2.5 Gbps
• Transatlantic bandwidth
• Recent history of Telco failures…
• Dedicated circuit gone
• now have transit via GÉANT
7 February 2003
NeSC visit
7
JANET’s External connections
7 February 2003
NeSC visit
8
Bandwidth delivery chain
NATIONAL
national
backbone
REGION
regional
network
INSTITUTION
University
LAN
Dept.
GEANT
individual
user
Abilene
7 February 2003
NeSC visit
9
High bandwidth connections
E.g. Edinburgh & Glasgow
connection for ScotGRID
Research
Group
MAN
BAR
C-PoP
• charging: marginal costs (HE & Research only)
7 February 2003
NeSC visit
10
E-Science project connection costs
• Intended for Industrial project partners
• UKERNA paper approved by JCN
• Policy for connection charges
• JANET connection costs
• Infrastructure – full cost
• Telecom link: installation & rental
• Routers/Switches & interfaces
• Access to JANET
• Contribution to JANET infrastructure
• ‘List’ prices up to 34Mb/s
7 February 2003
NeSC visit
11
C-PoP Options
UKERNA
Content Host
Research
Group
MAN
C-PoP
Switch
BAR
Backbone
Router
3rd Party
Equipment
C-PoP
• Pilot at Reading C-PoP
• Develop procedures & cost model
• Other selected C-PoPs later – (Leeds…)
7 February 2003
NeSC visit
12
Issues to think about
• Project requirements
• nature of traffic – volume, rate, real-time ?
• Implications for department/university LANs
• involve local support staff
• Regional connection: RN or direct ?
• discuss requirements with local RN operator
• Dedicated connection to industrial partners
• OK for collaborative work under JANET AUP
• Need for access to development network ?
• Funding sources for above
7 February 2003
NeSC visit
13
GNT Applications Questionnaire
• Assess e-Science applications
• Network Requirements
• Network Impact
• Main points
• Application architecture
• Identify & Characterise the
•
most-significant traffic-flows
Scalability – more users, more sites…
• Process
• GNT & GSC Member/s visit projects
• Assist project to answer points above
7 February 2003
NeSC visit
14
JANET Multicast
• Multicast to all RNs
• UKERNA Project plan
• Regional Networks survey
• Equipment & Topology
• 60-70% of RNs now “Multicast capable”
•
i.e. – could deliver to sites if they request it
• Encouraging the rest to follow suit
• Documentation
• JANET Multicast Guide
• Operational Monitoring
• Beacons
• Eventual incorporation into production SLAs
7 February 2003
NeSC visit
15