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Transcript
Industry Perspectives on
Optical Networking
Progress in optical control plane interoperability
Joe Berthold
May 3, 2005
Dynamic Multilevel Architectures
Three Principle Transport
Methods
Motivation
»
Reduce CapEx – Optimize transport choice
»
Reduce OpEx – Automate transport
»
Improve Performance - Lower latency, bandwidth
guarantee, improved security
2
Revenue
End-user
Generating
Services
Services
Service offerings at
multiple network layers
IP/MPLS
MPLS
Layer 2 Convergence
MPLS
Intelligent Circuits
Layer 1 Convergence
Intelligent Circuits
GFP-VC-LCAS
Agile WDM
Layer 0 Convergence
Agile WDM
©2005 Ciena Communications, Inc.
•
IP/MPLS for Packet Services
•
SONET/SDH/OTN for Sub-l
Circuit Services
•
Agile WDM for l Circuit
Services
Relative Switching Costs
MPLS
IOS
WDM
5
1
1
10
2
0.2
Interface Cost
Express Cost
Optical Control Plane Benefits
Optical control plane enables»
Dynamic bandwidth services
»
Multivendor service activation
»
Improved manageability
Multivendor Service Activation
Dynamic Bandwidth Services
Application
Servers
Modify bandwidth based on application needs
Improved Manageability
Control plane standards accelerate interoperability
and simplify management system development
3
©2005 Ciena Communications, Inc.
•
Auto-discovery
•
Auto-provisioning
•
Network is the database
•
End-to-end service management
Key Optical Networking Standards
Control Plane Standards
ITU-T G.ASON
IETF GMPLS
Data Adaptation to SONET/SDH
Domain Model
Optical Services
Virtual Concatenation
Client B
Client A
OC48/STM16
UNI
OC12/STM4
5 x STS-1 Circuit (STS-1- 5v = 250 Mb/s)
Domain B
Network
Domain A
E-NNI
Domain C
Generic Framing Procedure
Gigabit
Ethernet
OC48/
STM16
7 x STS-3c Circuit
(STS-3c-7v = 1 Gb/s)
OC48/
STM16
Gigabit
Ethernet
Peer Model
Integrated Control of IP and Optical Network
Network
Adapter
Adapter
Link Capacity Adjustment Scheme
4
©2005 Ciena Communications, Inc.
5
©2005 Ciena Communications, Inc.
2004 OIF World Interoperability Demonstration
Interoperability of Dynamic Intelligent Optical Networks
Interfaces
»
»
O-UNI 1.0 (Optical User Network Interface)
»
E-NNI 1.0 (External Network to Network Interface)
Interoperability
»
»
Network Topology Discovery
»
Provisioning and Support of Switched High Speed Circuits
Ethernet/SONET adaptation using Generic Framing Procedure (GFP)
Capabilities demonstrated
»
6
»
Fast Ethernet (100 Mb/s) on a mix of SONET/SDH payload options
»
Gigabit Ethernet (1Gb/s) on a mix of SONET/SDH payload options
©2005 Ciena Communications, Inc.
Significance of the Event
»
Industry’s first time ever worldwide multi-carrier interoperability
testing
» Carriers’ close involvement and strong support are key to the
technology advancing towards industry adoption
7
»
Control plane connectivity built out around the world lays the
foundation for future testing methodology and infrastructure
»
Successful control plane and data plane integration validates
OIF’s Implementation Agreements
»
Participation of 15 industry leading vendors and 7 major carriers
signifies the wide technology adoption in industry
©2005 Ciena Communications, Inc.
OIF World Interoperability Event
SuperCom – June 2004
Testing
-OIF UNI 1.0 – optical service interface
-OIF ENNI – inter-domain optical interface
-Ethernet over wide area transport
15 Participating Vendors
» ADVA
» Alcatel
» Avici Systems
» CIENA Corp.
Testing carried out in 7 interconnected
carrier labs over several months
» China Telecom
» KDDI Labs
» NTT
» Deutsche Telekom
8
» Cisco Systems
» Fujitsu
» Lucent Technologies
» Mahi Networks
» Marconi
» NEC
» Nortel Networks
» Telecom Italia
» Siemens
» AT&T
» Sycamore Networks
» Verizon
» Tellabs
©2005 Ciena Communications, Inc.
» Turin Networks
OIF World Interoperability Demonstration at Supercomm 2004
9
©2005 Ciena Communications, Inc.
Ethernet over dynamic transport network
Customer 1 Access
Customer 1 Access
GE
Sonet VC1
GE
Sonet VC2
Customer 2 Access
Customer 2 Access
Transport service connects two access ports:
– Ethernet over SONET/SDH connection
– Guaranteed bandwidth and latency
– Bandwidth adjustable with LCAS
– OIF UNI 2.0 adds signaling for Ethernet interfaces
10
©2005 Ciena Communications, Inc.
Multiple Ethernet services on transport network
Customer Access
Customer Access
GE
VCG
GE
Customer Access
VCG
Transport service connects multiple access ports
– TDM: Channelized STS’s
– VLAN: Flows switched based on VLAN tag
11
©2005 Ciena Communications, Inc.
GE
VCG
OIF Interoperability In Progress
Client
network
D
UNI2.0
Ethernet
Client
network
E
Optical
network
A
MSPP
(UNI1.0R2)
Client
network
A
Optical
network
B
MSPP
I- NNI
E- NNI
I- NNI
(UNI1.0
R2)
UN
I
Client
network
C
UNI2.0
Ethernet
Carrier
domain
Client
network
B
Client
network
F
UNI – User to network interface
I-NNI – Internal network to network interface
E-NNI – External network to network interface
12
©2005 Ciena Communications, Inc.
Summary
» Control Plane Implementation Status
» Over 30 carriers worldwide use optical control planes in live
networks
» Control Plane Interoperability
» Interoperability standards for UNI are complete
» Interoperability standards for NNI are progressing
» OIF is driving interoperability for ITU-T standards
» Ethernet Dedicated Private Line Services
» ITU data adaptation standards are complete
» Dynamic bandwidth control standards progressing
13
©2005 Ciena Communications, Inc.
Thank You