Post on 03-Jan-2016
Hybrid MLNDOE
Office of Science DRAGON
Hybrid Network Control Plane Interoperation Between Internet2 and ESnet
Tom LehmanInformation Sciences Institute East, University of Southern California
Chin GuokNetwork Engineering Services Group, ESnet
Andy Lake, John VollbrechtUniversity Corporation for Advanced Internet Development, Internet2
ESCC/Internet2 Joint Techs Summer Meeting
July 16, 2007
Fermi Lab
Batavia, Illinois
Hybrid NetworksHeterogeneous By Nature
• Hybrid networks are extremely heterogeneous at several levels
• DataPlane can be constructed from• router based Multiprotocol Label Switching (MPLS)
tunnels• Ethernet VLAN based Circuits• Synchronous Optical Network / Synchronous Digital
Hierarchy (SONET/SDH) circuits• Wavelength Division Multiplexing (WDM) connections• Combinations of the above
Hybrid NetworksHeterogeneous By Nature
• Control Planes can be based on• Multiprotocol Label Switching (MPLS)• Generalized Multiprotocol Label Switching (GMPLS)• Web Services• Management Systems• Combinations of the above
• Client (user) services or attachment points could be• Ethernet• SONET• IP Router• InfiniBand
Hybrid NetworksWeb Service Control Plane Interfaces
• Web Services provides a mechanism to deal with heterogeneous control planes• inspired by the standards bodies work on control plane protocols,
but not just recreating that work at the web service level • Better described as using control plane techniques to develop a
“service plane”
Ethernet/L2SC(Dataplane)
SONET/TDM(Dataplane)
Router(MPLS)/PSC(Dataplane)
GMPLS(I-NNI)
MPLS(I-NNI)
Management System(I-NNI)
Inter-Domain Controller (IDC)
WS E-NNIWS E-NNI
WS UNI WS UNI
IDC
IDCWS I-NNI IF
WS I-NNI IF WS I-NNI IF
Hybrid NetworksWeb Service Control Plane Interfaces
• Four Primary Web Services Areas: • Topology Exchange, Resource Scheduling, Signaling, User Request
Hybrid NetworksControl Plane Architecture
• The benefits offered by Web Services include• standardized mechanisms for user authentication and policy
management• flexible features for interfacing with a diverse set of I-NNI
mechanisms• Allows focus on several issues that current control plane work
has not addressed in a robust manner:• scalability, stability, security, flexible application of policy, AAA,
scheduling
• Will still allow for peering domains with compatible non web service E-NNI (i.e. GMPLS based) to utilize that as desired• a domain might peer with one domain at GMPLS level, and
another at the Web Service level
Web Service based E-NNIThree Main Components
• Routing• Topology Exchange• Domain Abstraction• Varying levels of dynamic information
• Resource Scheduling• Multi-Domain path computation techniques• Resource identification, reservation, confirmation
• Signaling• path setup, service instantiation
Web Service Based Multi-Domain Provisioning – Collaborative Effort
• Architecture and Web Services Design effort is a collaborative effort between:• Internet2• ESnet• DANTE (GEANT, Autobahn)
• Also collaborating with University of Amsterdam on Token based RSVP signaling and topology exchange
Internet2 and ESnetImplementation Goals and Methods• Goal • Dynamically provision layer 2 circuits between Internet2
network and ESnet/SDN
• Methods• Use existing control plane software where appropriate• Provide multidomain AAA architecture for message
exchanges• Exchange topology information• Coordinate the scheduling of resources• Signal circuit setup between domains
Control Plane Software
• OSCARS (Web Service)• Started by ESnet, merged with Internet2’s
BRUW project in 2006• Web service architecture, interfaces to lower
level network specific provisioning systems• Vendor based MPLS L2VPN (Martini Draft)
• Internet2 DCS/HOPI• DRAGON (NSF funded project in development
by USC/ISI EAST and MAX)• Uses GMPLS protocols to build layer 2 circuits
OSCARS Architecture
End-HostApplication
User
Topology
LinkReservations
Policy
Web-UserInterface
Path Setup(MPLS)
BandwidthScheduler
AuthenticationAuthorization
Path Setup(GMPLS)
OSCARSResourceManager
ResourceManager
Customer Site External Peer
Web-Services Interface(Signed SOAP Messages)
I-NNI
OSCARS• Web Services• Source host, destination host, bandwidth, start
time, end time
• “Book-ahead” scheduling• Multidomain AAA architecture using X.509
certificates• Uses traceroute for path calculation• Each domain configures MPLS tunnels on
Juniper routers at requested time
DRAGON
• Virtual Label Switched Router(VLSR)• PC based control plane software• Manages and provisions various network
equipment such as ethernet switches, SDH/SONET • Signaling with RSVP packets
• Network Aware Resource Broker (NARB)• Stores topology in OSPF-TE database• Performs inter/intradomain path calculation• Exchanges interdomain topology
AAA and Security
• OSCARS AAA• SSL Encryption• Authentication• X.509 Certificates• User to Domain• Domain to Domain
• Web Service Security by OASIS• SAML assertions about end-user (future)
• Authorization• OSCARS attribute based system
Topology Exchange
• XML topology schema• Developed by DICE• Domain, Node, Port, Link hierarchy• Namespace extension to the
NMWG/PerfSonar Topology Schema
• Interdomain exchanges between OSCARS servers via web services
• Topology storage flexible• NARB, XMDR, static file
• Path Computation by NARB or other component that uses topology data
Resource Scheduling
• OSCARS web service message• Source port, destination port, bandwidth,
start time, end time• Optional parameters such as VLAN tag
• Generates information important to later signaling• Global-ID, secure token
• Stored in OSCARS reservation database
Signaling
• XML signaling• OSCARS receives XML signaling message• Contacts VLSR to initiate path setup• Could also talk to Juniper router or other device
• RSVP signaling• User signals VLSR directly• Token-based signaling developed by University
of Amsterdam’s Phosphorous project• Token, Global Reservation ID
Timelines and Future Work
• Timeline• Hope to have test release by end of Summer
2007• Official release in Fall 2007
• Future Work• Continue collaboration with international
partners• Explore use of federated identity software such
as Shibboleth