Upload
theodore-holland
View
214
Download
0
Embed Size (px)
Citation preview
TERENA TAC meetingLyngby, Denmark
21st May 2007
TF-VSS proposal for a Pan-European videoconferencing
service
András Kovács, NIIF/HUNGARNET [email protected]
Overview of TF-VSS
NIIF – http://www.niif.hu
• TF-VSS: Videoconference Service Studies
group
• Mandate: 01/10/2006 – 30/09/2007
• Preliminary support for a European VC service:
• Gather needs and general views
• Prepare a specification (recommendation)
• High level technical plans
• GN2 Y4 proposal preparation
• Feasibility study
• Reminder:• GN2 Y3 → failed• Technical complexity, lack of motivation
Status of TF-VSS activities
NIIF – http://www.niif.hu
Activity
Schedule Title Leader
A1 Start: 01/10/06 End: 06/10/06
Setting up taskforce… András Kovács (NIIF/HUNGARNET)
A2 Start: 01/10/06 End: 31/10/06
Survey on future plans and EU VC service (D2.1)
András Kovács (NIIF/HUNGARNET)
A3 Start: 01/11/06End: 30/11/06
Service specification (D3.1) John S. Martin (JANET)
A4 Start: 01/11/06 End: 30/06/07
Designing high-level technical plans (D4.1)
András Kovács (NIIF/HUNGARNET)
A5 Start: 01/07/07 End: 30/09/07
Final report (D5.1) András Kovács (NIIF/HUNGARNET)
Activity A2
NIIF – http://www.niif.hu
• Web survey:• NREN/institutional VC deployments and mid-term plans• Approach to a European VC service• D2.1 available at TF activities’ page:http://www.terena.org/activities/tf-vss/activity_areas.html
• Responders: 19 European NRENs and 11 large
institutions
Activity A3 / GN2 proposal I.
NIIF – http://www.niif.hu
• Service specification: D3.1 is available
• Basic (1st phase) and advanced (2nd phase)
service
• Pros & cons of central and shared
implementations
Central Shared
Standards based (H.323 and SIP) + multipoint (MCU) service
Central MCU resource Based on NRENs’ spare capacities, heterog. equipments
Easy multiprotocol (H.323/SIP) operation Difficult multiprotocol operation
Shared support on a single device Shared support on multiple devices (SLA?)
Easy prioritization Cannot prioritize national vs. external claims
Easy to introduce new features (e.g. HD) Difficult to introduce new features
Easy implementation of gateways Difficult (distributed) implementation of gateways
Easy monitoring, management & reporting Distributed monitoring, management & reporting
- Interdomain provisioning protocol must be designed
Can be resilient and scalable (more expensive) Resilient and scalable
High quality service Quality?
Expensive (200-250kEuro) Cheap, but requires 2-3x more human resources
Architecture: central resource
NIIF – http://www.niif.hu
Architecture: shared resource
NIIF – http://www.niif.hu
Activity A3 / GN2 proposal II.
NIIF – http://www.niif.hu
• For both implementations:
• Free gatekeeper (H.323) and registrar (SIP)
services
• Central reservation website (localised)
• Federated AAI
• Federated European-scale directory
• Standardised video codecs: H.261, H.263 and
H.264
• Gateways (e.g. ISDN, VRVS/EVO, etc.)
• Data collaboration
• API based MCU control
• . . .
Federated directory
NIIF – http://www.niif.hu
European level VC support
NIIF – http://www.niif.hu
• Implementation of support:
• Hierarchical (European, national, institutional
level)
• NRENs: round robin basis (see e.g. GN2 PERT)
• Important: GDS, coordinating between NREN
support groups
• Operational model to be worked out…
GN2 Y4 proposal III.
NIIF – http://www.niif.hu
• Preliminary proposal:
• Presented at GN2 Y4 planning meeting (2nd
April)
• Draft work items specified
• Option A (shared) and option B (central):
• Partners: CESNET, CSC, GRNET, NIIF,
REDIRIS, SWITCH (informal survey)
• Manpower bids: 6MM
• Very low/limited motivation and contribution
Resource Central Shared
Manpower requirement 28MM 38MM
Operation cost per year 12MM 24MM
Equipment budget 150kEuro (MCU)
servers
GN2 Y4 proposal IV.
NIIF – http://www.niif.hu
• Proposal refinement:
• In progress… based on feedback (GN2)
• Central resource was chosen (human resources)
• Budget: 200-250kEuro (vendor offers)
• Work items finalised
• Available for contribution and comments/ideas
• Reduce complexity, and minimise human
resource needs
• Decision should be taken: continue or not
• Provide official feedback:
• Work item participation
• Manpower bids
GN2 Y4 proposal V. - Options
NIIF – http://www.niif.hu
• Options to chose:
• Proposal as it is… (+MCU, +support,
+reservation, +dir, …)
• Reduced 1 (-MCU, +support, -reservation, +dir,
…)
• Cancel proposal
• . . .
NIIF – http://www.niif.hu
Thank you for your attention
?http://www.terena.org/activities/tf-vss/
Questions/feedbacks: [email protected]