an evolutionary approach to g-mpls ensuring a smooth migration of legacy networks ben martens...
TRANSCRIPT
![Page 1: An evolutionary approach to G-MPLS ensuring a smooth migration of legacy networks Ben Martens Alcatel USA](https://reader036.vdocuments.site/reader036/viewer/2022062518/56649d095503460f949dac4f/html5/thumbnails/1.jpg)
An evolutionary approach to G-MPLS ensuring a smooth migration
of legacy networks
Ben MartensAlcatel USA
![Page 2: An evolutionary approach to G-MPLS ensuring a smooth migration of legacy networks Ben Martens Alcatel USA](https://reader036.vdocuments.site/reader036/viewer/2022062518/56649d095503460f949dac4f/html5/thumbnails/2.jpg)
Core Network EvolutionTraditional Core Networks
Layer
0La
yer
1
TDM transportSONET/SDH Digital ADM and DCS
Layer
2La
yer
3
Voiceexchange
ATMswitch
ATMswitch
FRswitch
ATMswitch
IProuter
DWDM terminal multiplexers
SML
Voice VPN IP ATMLeasedLines
NMLEML
NMLEML
NMLEML
SMLSMLSMLSML
NML: Network Management Layer SML: Service Management LayerEML: Element Management Layer
Variety ofNetworks
(TDM, ATM, FR, IP)
OTN Management
IP Management
ATM Management
SDH/SONET Management
![Page 3: An evolutionary approach to G-MPLS ensuring a smooth migration of legacy networks Ben Martens Alcatel USA](https://reader036.vdocuments.site/reader036/viewer/2022062518/56649d095503460f949dac4f/html5/thumbnails/3.jpg)
FragmentedNetwork
Management
Integrated Cross Technology
Network Management
CumbersomeService
Provisioning
Intelligent Optical Networking
ComplexTransmission
Layer
All OpticalTransport Network
Low / MediumCapacityNodes
Network Consolidation
through Scalable Terabit Nodes
Layer
2La
yer
3
Variety ofNetworks
(TDM, ATM, FR, IP)
Core Network EvolutionVision of the New Millennium
Layer
0La
yer
1
TDM transportSONET/SDH Digital ADM and DCS
DWDM Terminal Multiplexers
VPNLeasedLines
Voiceexchange
ATMswitch
FRswitch
ATMswitch
IProuter
Serv
ice L
ayer
Service Convergence on Enhanced
IP layer
Tra
nsp
ort
Layer
Serv
ice S
ubla
yer
Tra
nsp
ort
Sub
layer
Optical cross connectsOptical add drop multiplexersDWDM terminal multiplexers
TDM transportNMLEML
NMLEML
NMLEML
NMLEML
NMLEML
SMLSMLSMLSMLSML
VoiceIPLeasedLines
IProuter
DiffServ MPLS
ATM
IPFR
Voic
e
Voic
e
Voic
eATMswitch
![Page 4: An evolutionary approach to G-MPLS ensuring a smooth migration of legacy networks Ben Martens Alcatel USA](https://reader036.vdocuments.site/reader036/viewer/2022062518/56649d095503460f949dac4f/html5/thumbnails/4.jpg)
setuprequest
GMPLS orO-UNI
IP TE
Optical Internetworking
OXC with embedded ‘
routers’
Intelligent Optical NetworkingA New Networking Paradigm
Traditional Provisioning• IP network using MPLS-TE• Optical circuits controlled by TMN • no co-ordination between IP and
Optical domain Intelligent Optical Networking
• Evolution of transmission networks in a way that is beneficial to the creation and provisioning of services
• Automatically controlled transport networks
• New role for transport management• Distributed connection control
model
SONET
Protection
DWDM
ADM DWDMMux/Demux
OADM
![Page 5: An evolutionary approach to G-MPLS ensuring a smooth migration of legacy networks Ben Martens Alcatel USA](https://reader036.vdocuments.site/reader036/viewer/2022062518/56649d095503460f949dac4f/html5/thumbnails/5.jpg)
GMPLS Control Plane
Untrusted interfaces
ISP 1
ISP 1
ISP 2
ISP 2
ISP 3
O-UNI
O-UNI
O-UNI
Client LSRsignals foran explicit
optical pathusing GMPLS
signalling
Or client LSRsignals
connectivityrequirementsusing O-UNI
Setup ofoptical path
MPLS TE-LSPruns over optical path
![Page 6: An evolutionary approach to G-MPLS ensuring a smooth migration of legacy networks Ben Martens Alcatel USA](https://reader036.vdocuments.site/reader036/viewer/2022062518/56649d095503460f949dac4f/html5/thumbnails/6.jpg)
GMPLS models
Operator 1
Operator 2
Operator 3
UNI
UNI
Peer (Integrated)Single routing domain for all routers and optical cross-connectsSingle operator owning IP and Optical networkOverlayNo topology information has to be shared between domainsOptical network can serve multiple client networks
HybridCombining Overlay and PeerIP/Optical operator can also provide wholesale services
UNI UNI
![Page 7: An evolutionary approach to G-MPLS ensuring a smooth migration of legacy networks Ben Martens Alcatel USA](https://reader036.vdocuments.site/reader036/viewer/2022062518/56649d095503460f949dac4f/html5/thumbnails/7.jpg)
Evolution approach to Intelligent Optical Networking
Short term: centralized implementation of an automatically controlled transport network
• Centralized provisioning (TMN)• Add UNI interface to the management system in the optical
network (indirect signaling interface)• Start on a boundary router or management system in the client
domain• e.g., out-of-fiber / out-of-band UNI
• Allows clients to query the server to set up light-paths • The server performs CAC, calculates & establishes the light-
path. Present architecture features...
• No direct signaling interface between routers and OXCs• applicable to non-GMPLS enabled networks• Aids in implementing complex capacity optimization schemes• The near-term provisioning solution in optical networks with
interconnected multi-vendor optical sub-networks.
![Page 8: An evolutionary approach to G-MPLS ensuring a smooth migration of legacy networks Ben Martens Alcatel USA](https://reader036.vdocuments.site/reader036/viewer/2022062518/56649d095503460f949dac4f/html5/thumbnails/8.jpg)
OIF UNI
Focussing on traffic engineering
• Use of service management system to handle service level agreements between client and Transmission
• Use of OIF UNI - lightpath create/delete/query/...
Dynamic connectivity driven by IP traffic patterns
• Dynamic path set-up process• Optical as well as SDH/SONET
transport
Transport Management
IP ServiceManagement
- TE Tool -
Centralized Management Approach
Any Transport network
Other client’s applications
![Page 9: An evolutionary approach to G-MPLS ensuring a smooth migration of legacy networks Ben Martens Alcatel USA](https://reader036.vdocuments.site/reader036/viewer/2022062518/56649d095503460f949dac4f/html5/thumbnails/9.jpg)
Allows the Operator to sell “bandwidth on demand” services to client ISPs and be Carriers’ Carrier
• Set-up of flexible and guaranteed optical services:• any-time (only when and for the time needed)• @any-point (supporting flexible topologies)• @any-type (with different flavors in terms of bandwidth,
protection, …)• with a guaranteed O-SLA
• bandwidth on demand services guaranteed according to an SLA that can be easily demonstrated
• with specific constraints (e.g., verification against O-VPN contract)
• Signaled from client Ease inter-operability using the OIF UNI standard
Protocol across• different vendors of Transport Networks • IP, ATM Clients and the Transport Network.
No impact on network elements
New role for Transport Management
![Page 10: An evolutionary approach to G-MPLS ensuring a smooth migration of legacy networks Ben Martens Alcatel USA](https://reader036.vdocuments.site/reader036/viewer/2022062518/56649d095503460f949dac4f/html5/thumbnails/10.jpg)
The intelligent optical network
Transport Management
IP ServiceManagement
OXCs with embedded GMPLS
controller
OIF UNI
OIF UNI
Focussing on lambda processing
• Optical Crossconnect as key component of the core
CrossConnect fully GMPLS enabled
• GMPLS Control Plane• Link Management Protocol• Capable to support peer and/or
overlay model Role of Transport Management
• No longer involved with setting up individual connections
• Deals with SLAs• Can be used to support transport
VPNs (lambda service)
![Page 11: An evolutionary approach to G-MPLS ensuring a smooth migration of legacy networks Ben Martens Alcatel USA](https://reader036.vdocuments.site/reader036/viewer/2022062518/56649d095503460f949dac4f/html5/thumbnails/11.jpg)
7770 RCP
O-UNI
GMPLS proxy
GMPLS / Non-GMPLS Inter-Networking
OIF UNI
Transport ManagementIP Service
Management
Non-GMPLSsubnet
GMPLSsubnet
OIF UNI
Focussing on Interworking• Transport domain manager
covers lambda provisioning, protection & restoration capabilities in non-GMPLS networks
Keep todays value-added services
• Add network migration procedures
Role of Transport Management
• Not only network management but source of network intelligence
![Page 12: An evolutionary approach to G-MPLS ensuring a smooth migration of legacy networks Ben Martens Alcatel USA](https://reader036.vdocuments.site/reader036/viewer/2022062518/56649d095503460f949dac4f/html5/thumbnails/12.jpg)
Core network evolution calls for • Next generation high capacity core routers• Intelligent Optical Networking
Maximizing profitability drives the need for • Fast service deployment• Service differentiation • Reduced OPEX
OIF and GMPLS concepts applicable to current generation core networks
Installed base calls for evolution strategy
Conclusion