Research on Networks presentation at SURFnet, November 8th 2010
1. Interoperability of Lightpath Provisioning
Systems in a Multi-domain Testbed
Fred Wan
Paola Grosso
Cees de Laat
University of Amsterdam
System and Network Engineering research group
2. Overview
• Background
– E-science and dynamic resource allocation and provisioning
– GLIF, NRENs and GOLEs
– Lightpaths/deterministic paths
– Network Resource Provisioning Systems (NRPSs)
• Network service- and control-planes
– General NRPS architecture
– Multi-domain NRPSs: Chain versus Tree model
– Harmony, Fenius, IDC
– Interoperability requirements
– Automated GOLE pilot, Fenius
– SC10 demo
• Conclusions and future work
3. Dynamic Resource Allocation and Provisioning
• National Research and Education Networks (NRENs) facilitate data
transport between
– compute resources
– scientific instruments
– data-storage
– distributed measurement equipment
• Dynamic resource allocation: The network as a dynamic resource
• Efforts to combine international e-science resources:
– EU projects Phosphorus (finished), Geysers (current), FEDERICA, Panlab,
FIRE, etc.
– US projects, e.g. GENI
• Problem: how to combine, allocate and control the inter-NREN
network?
• Current status: manually by NREN NOCs
• Goal: automate request processing for network connections (advance
reservation and provisioning)
4. GLIF and GOLEs
• Global Lambda Integrated Facility
• Virtual international organization promoting paradigm of lambda
networking
• Collaborative initiative among worldwide NRENs, consortia and
institutions
• World-scale Lambda based Laboratory to facilitate application and
middleware development
• GOLE – GLIF Open Lightpath Exchange
– Peering point for lightpaths
– Global model: MANLAN, NetherLight, UKLight, Starlight, NorthernLight, …
• Open anyone can bring lambdas
– Lambda owner controls port
– GOLE owner makes cross connects happen
– Limitations only in technology
8. Connection requirements and Control
• Overprovisioning best-effort networks does not work
• Requirements:
– deterministic bandwidth
– point to point connection
– capacity and timeliness guarantees when transferring large chunks
asynchronously
– Bandwidth guarantees and jitter-free transport when transferring
synchronously
• Available technologies: GMPLS, WDM, TDM (layer 1) and PBT (layer 2)
• TDM: provision a number of VC-4 (or other capacity) channels by
creating cross connects on the switches comprising the path
• Configuration: CLI, TL1, SNMP
• Integrate NEs into workflow: Network Resource Provisioning Systems
(NRPSs) so lightpaths can be reserved in advance
• General design abstracted from various implementations
9. General inter-domain NSP design and implementations
Single-domain NRPSs:
Multi-domain NSP: OSCARS & DRAGON (IDC)
IDC
Internet2, ESnet
10. Inter-domain path reservation and provisioning:
Two models
• Federated model: uniform request interface, topology exchange
and event notification among peers
11. Legend: East / West interfaces
Grid
Reservation service interface
---------------------------------------------------------- Middleware Reservation WS:
Topology service interface • Availability Request
• Create Reservation Request
Request for end-to-end resource
provisioning
Network Service Plane
• Query Reservation(s) Request
• Activate Reservation Request
Database
Topology information
• Cancel Reservation Request
NRPS address information
• Status Request
Topology
NRPS Manager Path Topology WS:
Computer
Service • Add domain
Reservation service client
• Delete domain
Interoperability
• Edit domain
Resource reservations
layer
• Retrieve domain
• Add Endpoints
• Delete Endpoint
Reservation Topology
service client
Reservation Topology
service client
Reservation Topology
service client • Edit Endpoints
• Retrieve Endpoints
Adapter Adapter Adapter
• Add Link
ARGON driver UCLP driver DRAC driver
• Delete Link
• Edit Link
• Retrieve Link
ARGON domain UCLP domain DRAC domain
Centralized model: unification of request interface through an adaptation
layer, overlay topology and central event management
12. Automated GOLE pilot
• 16 Networks/GOLEs
• NRPSs: IDC, ARGIA,
DRAC, G-Lambda,
AutoBAHN
• Central controller:
Fenius
• Fenius: simpler
version of Harmony
13. SC09 setup (UvA view)
• Dynamic lightpath provisioning between GOLEs/Networks
• Each domain: perfSONAR deployed
• Demo: light turns green when connections are made
15. Example Scenario: UvA-StarLight
• Fenius translator on
each domain
• Super-Agent:
– central request
handler,
– inter-domain path-
finder
– messaging to
translators
• Domain-NRPSs
handle path-setup
• Translators can be
queried
17. Conclusions and future work
• Interoperability between heterogeneous Network Resource
Provisioning Systems is possible
• An hierarchical model is easiest to realize for heterogeneous NRPSs
(lesson learned from Harmony)
• A federated model is more flexible (design changes in the interface
apply to all instances), has enhanced interoperability and scalability
• We have show that mixing the two models is possible, but leads to a
lot of ad-hoc solutions
• Ideal solution is a standardized Network Service Interface: work
underway in the OGF-NSI working group. However: slow progress
• Future work:
– Investigate automation of GOLES: OGF automated-GOLE WG
– Improve the design and application of the current prevalent hierarchical
design component: Fenius
– Investigate if an IDC service interface can be designed to improve
integration with DRAC
