Post on 15-Jan-2015
description
Achim Autenrieth, ADVA Optical Networking
MPLS SDN World Congress 2014
March 18-21, 2014 / Paris, France
GMPLS, SDN, Optical Networking, Control Plane
© 2014 ADVA Optical Networking. All rights reserved.22
Cloud Connectivity: What Is Hot?
Network VirtualizationProgrammable WAN connectivity with open SDN implementation
Business ContinuityLow-latency connectivity for synchronous mirroring and disaster recovery solutions
Mega Data Center ConnectivityCost-, space- and power-efficient high-capacity transport
Cloud and traditional data center growth
“Cloud data center traffic will grow 6-fold from 2011 to 2016 reaching ca. 5 ZB”
Source: Global Cloud Index 2012, CiscoData Center Connectivity
Cloud services drive demand for dynamic high-speed data center connectivity
Cloud services drive demand for dynamic high-speed data center connectivity
© 2014 ADVA Optical Networking. All rights reserved.33
NMS / CP / SDN
Mission Key Facts
Transport SDN for Flexible Optical Networks
• Datacenter Connectivity
• Cloud Bursting
• Secure multi-tenancy
• Global network visibility with “real-time” control
• De-couple virtual from physical network
• NFV supportFrom cloud access to optical
Terabit/s connectivity
Use Cases and Drivers Enablers
DC Site 1
MAN / WAN
DC Site NEnterprise
Tenant B cloud
Tenant C cloudTenant A cloud
• Network Abstraction
• Virtualization
• Open & standardized interfaces
• Multi-tenancy capability
• Integration with existing OSS / NMS / CP
SDN turns the network into a programmable resourceSDN turns the network into a programmable resource
© 2014 ADVA Optical Networking. All rights reserved.44
What is SDN?
Open Networking Foundation white paper
In the SDN architecture, the control and data planes are decoupled, network intelligence and state are logically centralized, and the underlying network
infrastructure is abstracted from the applications.
• SDN is an architectural framework for creating intelligent networks that are programmable, application aware, and more open.
• SDN allows the network to transform into a more effective business enabler.
• SDN enables applications to request and manipulate services provided by the network and allows the network to expose network state back to the applications.
• A key aspect to the architectural framework is the separation of forwarding from control plane, and establishment of standard protocols and abstractions
AT&T Domain 2.0 Vision white paper
How does SDN apply to Optical Transport Networks?How does SDN apply to Optical Transport Networks?
© 2014 ADVA Optical Networking. All rights reserved.55
Transport SDN – Early Attempts
“If all you have
is a hammer,
everything looks
like a nail.”
Abraham Maslow, 1966
Transport SDN is much more than OpenFlow and protocol extensions. Transport SDN is much more than OpenFlow and protocol extensions.
© 2014 ADVA Optical Networking. All rights reserved.66
Packet Switch != Optical SwitchPacket Switch Optical l-Switch
Signal format Digital electronic Analog optical
Signal structure Ethernet frames Signal dependent
Payload visibility Yes No
Topology discovery In-band (e.g. LLDP) Out-of band (e.g. OSC)
Fabric connectivity Any-to-any Constrained
Path feasibility Implicit Dep. on signal quality
Path set-up Any order Sequential
Target: Optical layer connectivity but hiding optical complexityTarget: Optical layer connectivity but hiding optical complexity
© 2014 ADVA Optical Networking. All rights reserved.77
Optical Network != Generic Hardware
Connectivity & Topology DiscoverySignal Mapping & Format Compatibility
Optical Performance ConstraintsSequential Lightpath Setup/Teardown
Optical Power Balancing
OSC
(Out-of-band)
a) 40km
b) 60km
c) 20km
a)
b)
c)
d)
d)
WSS
WSS
WSS
WSS
WSS
Fixed / Tunable transponders
External Wavelengths
Regenerators
Colorless Module(s)
Line Ports
Directionless Module
© 2014 ADVA Optical Networking. All rights reserved.88
“Leg
acy
” Tr
an
sport
Network programmability
HW abstraction and virtualization
Centralized management & control
Flow/circuit oriented data plane
SDN vs. “Legacy” Optical Transport
Separation of data and control plane
SDN Principles
Top-down approach: Facilitate optical layer virtualization & programmability.
Top-down approach: Facilitate optical layer virtualization & programmability.
© 2014 ADVA Optical Networking. All rights reserved.99
• GMPLS *is* SDN (or a functional component of SDN)
• Control and Data plane separation was a basic design principle together with Centralized Control & Hardware Abstraction: see ASON - RFC4397/4652• Transport node<Data Plane> is a logical network device (…)
originating and/or terminating of a data flow and/or switching (…).
• Controller<Control Plane> is a logical entity that models all control plane intelligence (routing, traffic engineering (TE), and signaling protocols, path computation, etc.). A single controller can manage one or more transport nodes.
SDN/GMPLS for Optical Networks
How to leverage existing GMPLS control plane for SDN?How to leverage existing GMPLS control plane for SDN?
© 2014 ADVA Optical Networking. All rights reserved.1010
• Orchestration ~ automated configuration / coordination / management of complex systems, devices or systems, can present or deploy autonomic control and elements of control theory.
• A higher level system is required for “end to end composition” or virtual networks
• Abstraction of hardware andvirtualization enables homogeneous service activation processes
• Coordinate the deployment of services controlled by either GMPLS or OpenFlow
End to End Service Orchestrationwith GMPLS as Internal Signaling Protocol
DC
Eth. Aggr.
OpenFlow-controlledEthernet
Aggregation
WAN
GMPLS-controlled virtual (o real)
WSON/SSON
GMPLS
Cloud ComputingOrchestration
OVS
SDNCtrl.
OpenFlow-controlled
Ethernet/L2 Switches
OpenFlow
OVS
OVS
PCE
OpenFlow
SDNCtrl.
SDNCtrl.
?
© 2014 ADVA Optical Networking. All rights reserved.1111
How Transport Fits in SDN Model
NetworkHypervisor
UserInterfaces
3rd PartyApps
Transport Apps
Optical Network Controller
Management
Fault & Alarms
Configuration
Accounting
Performance
Security
Control
Topology Disc
Path Compute
Provisioning
Resource Mgr
Policy Mgr
Database
Flow DB
Topology DB
Resource DB
Policy DB
Optical Network Hypervisor
Network
Hypervisor
Storage Compute
Optical Network
Orchestration
SDNSDN Controller
Orchestration
• Hypervisors allowed Storage and Compute resources to be managed together.
• SDN allowed Networking to join through an Orchestration layer
• Transport is added by extending the SDN controller function.
Network Hypervisor virtualizes the optical network and presents an abstracted view to the SDN controller
Network Hypervisor virtualizes the optical network and presents an abstracted view to the SDN controller
© 2014 ADVA Optical Networking. All rights reserved.1212
Topology Virtualization Options
Abstract Link
• “You can reach this destination across this domain with these characteristics”
• Paths in the optical domain become links in the virtual topology
• Allows vendor independent constraint modelling
Virtual Node• Hierarchical abstraction
• Presents subnetwork as a virtual switch
• Simple model, but can be deceptive• No easy way to advertise “limited cross-
connect capabilities”
Virtual Node aggregation hides internal connectivity
issues and physical constraints
Abstract Link aggregation needs compromises and
frequent updates
See also: Aihua Guo, "Network Virtualization", OFC 2014, M2B.5See also: Aihua Guo, "Network Virtualization", OFC 2014, M2B.5
© 2014 ADVA Optical Networking. All rights reserved.1313
Optical Network Hypervisor
WAN is exposed as virtual topology using OpenFlow or Restful API.
SDN Controller #2
SDN Controller #1
ProviderController
SDN Controller #3
Optical Network Controller / HyperVisorFSP SW Suite
SNMP, NETCONF
OF, NETCONF, RESTful API
OF,
NETCONF,
PCEP
OF, PCEP, NETCONFGMPLS-AL, BGP-LS
SNMP, MTOSI
OpenFlow PCEP GMPLS-ALBGP-LS NETCONF/YANG
REST
Ab
str
acti
on
Physi
cal re
ssourc
es
Deri
ved t
opolo
gy
GMPLS
TED LSPDBPCE
© 2014 ADVA Optical Networking. All rights reserved.1414
Demonstration of SDN Use Cases
ECOC 2013 Postdeadline Paper
ECOC 2012 ECOC 2012 Postdeadline Paper
OFC/NFOED 2013
© 2014 ADVA Optical Networking. All rights reserved.1515
STRAUSS SDN Orchestration Testbed
SDN Network Orchestration
ABNO Controller
PCE
GMPLS-enabled Flexi-grid
DWDM domain
Active StatefulPCE
TED LSPDBTED
Topology Server
VNTM
Topology Server OPS
Flow Server
Provisioning Manager
TREMA Controller
REST API
OpenFlow
OpenFlow-enabled
OPS/Flexi-grid
DWDM domain
NOX Controller
REST API
OpenFlow
OpenFlow-enabled OPS
DWDM domain
OpenFlowController
REST API
Network Hypervisor
OpenFlow + GMPLS enabled
DWDM domain
OCS
OPS OCS
TED LSPDB
www.ict-strauss.eu
@ICTstrauss
© 2014 ADVA Optical Networking. All rights reserved.1616
SDN Enables Optical Network Operation and Control Innovation
Datacenter Connectivity Network Virtualization & Orchestration
Multilayer Optimization Open Application Framework
© 2014 ADVA Optical Networking. All rights reserved.1717
Optical Transport Network Evolution withSoftware Defined Networking
Network & Service Mgmt & Apps Control Plane SDN
Existing NM & CP software portfolio will be extendedand complemented with new SDN-based software modules
Abstraction & Virtualization
End-to-End Service Orchestration
Network Programmability
Thank You
IMPORTANT NOTICE
The content of this presentation is strictly confidential. ADVA Optical Networking is the exclusive owner or licensee of the content, material, and information in this presentation. Any reproduction, publication or reprint, in whole or in part, is strictly prohibited.
The information in this presentation may not be accurate, complete or up to date, and is provided without warranties or representations of any kind, either express or implied. ADVA Optical Networking shall not be responsible for and disclaims any liability for any loss or damages, including without limitation, direct, indirect, incidental, consequential and special damages, alleged to have been caused by or in connection with using and/or relying on the information contained in this presentation.
Copyright © for the entire content of this presentation: ADVA Optical Networking.
aautenrieth@advaoptical.com