Optical Networking Services 1 Optical Networking Services


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  • Nortel’s optical signaling network is built over G.ASTN Control Plane using Preside ServiceWare & OSA Clients. It has 3 basic components: The physical control plane made up of interfaces and controllers that are overlaid on top of the existing optical traffic plane. This provide the pysical medium to interconnect all the network elements in the network. The preside ServiceWare layer for service management and creation. This layer takes care of: Service Activation Service Assurance Customer Care and Billing Service Control Policy Services It will also provide the platform for the tools needed to efficiently design and maintain the network including: Mesh Network Planner Mesh Optimizer Mesh Capacity Planner Finally, Preside will also continue to provide leading edge network management functionalities including: Fault Detection Fault Isolation Fault Correlation Alarm Monitoring Network inventory 3. The final component is the applications the will be created to take advantage of the new network capabilities including bandwidth-on-demand, optical VPNs and bandwidth trading.
  • Enterprise employees have been able to communicate across their Local Area Network (LAN) without much concern over format or rate; Ethernet 10Bt and 100Bt are common in almost all enterprises. The enterprise bottleneck to the Wide Area Network (WAN) has always been constrained to the traditional voice telecommunication rates of DS0 (64Kb/s), DS1 and on rare occasions DS3. Format conversion and adaptation is required for any data communication beyond the LAN. The service provider is seen simply as a “middleman”, providing network connectivity with no value-added content, leaving them susceptible to customer churn as lowered priced offerings become available. Bandwidth capacity has been increasing in the service provider WAN as OC-48 and OC-192 optical backbones have been deployed. Bandwidth has also been increasing in the enterprise LAN as they have deployed Fast Ethernet and 1G Ethernet connections in their corporate networks. A bandwidth bottleneck still exists, however, at the connection between the LAN and the WAN, the Metropolitan Area Network (MAN).
  • Optical Networking Services 1 Optical Networking Services

    1. 1. Optical Networking Services Optical Networking Services Some slides and most of the graphics are taken from other slides Tal Lavian [email_address]
    2. 2. Research Direction <ul><li>The research topic that I’m looking after is Applications and Services Infrastructure for Optical Networking </li></ul><ul><li>What is a service composition and how we build a service? What building blocks are needed and how cooperating and brokering should work in optical infrastructure and among providers? </li></ul><ul><li>A good starting point can be to look into some applications and pick few (2-3). We can look into the TeraGrid and SAN, and we should see how the dynamic behavior of emerging optical networking technologies could benefit the applications </li></ul><ul><li>We need to look all the way from the problem, solution, application, architecture, services, and how this is implemented and what services are needed in each layer </li></ul>Optical Networking Services
    3. 3. Agenda <ul><li>Optical Networking </li></ul><ul><ul><li>Three networks: LAN, MAN and WAN </li></ul></ul><ul><ul><li>Leading technologies: ASTN, Smart  , ASON, MPLS, OE, </li></ul></ul><ul><li>Challenges </li></ul><ul><li>Service Solutions </li></ul><ul><li>Killer Applications </li></ul><ul><li>Summary </li></ul>Optical Networking Services
    4. 4. Three networks in The Internet Optical Networking Services 04/14/10 Slide: Long-Haul Core (WAN) Local Network (LAN) Metro Core Backbone PX Access Metro Network (MAN) ASON ASON ASON OPE ASON OPE
    5. 5. Optical ASTN (Automatic Switch Transport Network) Optical Networking Services 04/14/10 Slide: Client Signaling Client Traffic OCC Optical Switch UNI OCC OCC + 3. Applications (SA Servers) Service Agent (SA) MPLS path establishment NNI OSPF routing Optical Routing & Signaling Layer Topology discovery Inter-domain I/F OCC (IOC) Agile Optical Network ASON : End-to-End Dynamic Connectivity l’s, OC-N, STS-N granularity Management System UNI Proxy Signaling 2. Adds Layer for Service Management & Creation <ul><li>Service Activation </li></ul><ul><li>Service Assurance </li></ul><ul><li>Customer Care and Billing </li></ul><ul><li>Service Control </li></ul><ul><li>Policy Services </li></ul><ul><li>Mesh Network Planner </li></ul><ul><li>Mesh Optimizer </li></ul><ul><li>Mesh Capacity Planner </li></ul>Tools Service- Ware Network Mgmt <ul><li>Fault Detection </li></ul><ul><li>Fault Isolation </li></ul><ul><li>Fault Correlation </li></ul><ul><li>Monitoring </li></ul>
    6. 6. Optical Ethernet (OE) <ul><li>Goal </li></ul><ul><ul><li>Ethernet Transport (L2) over Optical networks (L1) </li></ul></ul><ul><li>Benefits </li></ul><ul><ul><li>Optical agility and reliability </li></ul></ul><ul><ul><li>Ethernet simplicity and efficiency </li></ul></ul><ul><ul><li>Seamless transport from LAN to MAN and to WAN </li></ul></ul>Optical Networking Services Slide: <ul><li>RPR Standard </li></ul><ul><li>(Resilient Packet Ring) </li></ul><ul><li>Ring MAC protocol </li></ul><ul><li>Ethernet over rings </li></ul><ul><li>IEEE 802.17 </li></ul><ul><li>10GigE Standard </li></ul><ul><li>GigE extension </li></ul><ul><li>Ethernet over OC-192 </li></ul><ul><li>IEEE 802.3ae </li></ul>OC-192 Ethernet IP
    7. 7. Agenda <ul><li>Optical Networking </li></ul><ul><li>Challenges </li></ul><ul><ul><li>Bandwidth provisioning </li></ul></ul><ul><ul><li>Data transport </li></ul></ul><ul><ul><li>Enterprise Networks </li></ul></ul><ul><ul><li>QoS </li></ul></ul><ul><ul><li>Network Heterogeneity </li></ul></ul><ul><li>Service Solutions </li></ul><ul><li>Killer Applications </li></ul><ul><li>Summary </li></ul>Optical Networking Services Slide:
    8. 8. The Metro Bottleneck Optical Networking Services 04/14/10 Slide: OC-192 DWDM n x  DS1 DS3 End User Access Metro Core Ethernet LAN LL/FR/ATM 1-40Meg OC-12 OC-48 OC-192 IP/DATA 1GigE 40G+ Metro Access Core Network Other Sites 10G
    9. 9. Challenge 1: Bandwidth Provisioning <ul><li>Network congestion </li></ul><ul><ul><li>LAN access to MAN </li></ul></ul><ul><li>Fibers in MAN and WAN </li></ul><ul><ul><li>Insufficient use: <50% on lighting </li></ul></ul><ul><ul><li>Inefficient use: wavelength under load </li></ul></ul><ul><li>Lack of mechanisms </li></ul><ul><ul><li>Dynamic setup </li></ul></ul><ul><ul><li>User intelligence </li></ul></ul>Optical Networking Services Slide:
    10. 10. Challenge 2: Data Transport Connectivity <ul><li>Packet Switch </li></ul><ul><li>data-optimized </li></ul><ul><ul><li>Ethernet </li></ul></ul><ul><ul><li>TCP/IP </li></ul></ul><ul><li>Network use </li></ul><ul><ul><li>LAN </li></ul></ul><ul><li>Advantages </li></ul><ul><ul><li>Efficient </li></ul></ul><ul><ul><li>Simple </li></ul></ul><ul><ul><li>Low cost </li></ul></ul><ul><li>Disadvantages </li></ul><ul><ul><li>Unreliable </li></ul></ul>Optical Networking Services Slide: <ul><li>Circuit Switch </li></ul><ul><li>Voice-oriented </li></ul><ul><ul><li>SONET </li></ul></ul><ul><ul><li>ATM </li></ul></ul><ul><li>Network uses </li></ul><ul><ul><li>Metro and Core </li></ul></ul><ul><li>Advantages </li></ul><ul><ul><li>Reliable </li></ul></ul><ul><li>Disadvantages </li></ul><ul><ul><li>Complicate </li></ul></ul><ul><ul><li>High cost </li></ul></ul>Efficiency ? Reliability
    11. 11. Challenge 3: Enterprise Networks <ul><li>Network security </li></ul><ul><ul><li>Encrypted communication </li></ul></ul><ul><ul><li>Selective routing </li></ul></ul><ul><li>Network efficiency </li></ul><ul><ul><li>Fast transport </li></ul></ul><ul><ul><li>Extensible intranet and extranet </li></ul></ul><ul><ul><li>Dynamical connection and route setup </li></ul></ul>Optical Networking Services Slide:
    12. 12. Challenge 4: QoS Guarantee <ul><li>The Internet has rapidly increasing bandwidth </li></ul><ul><ul><li>With the help of optical transport </li></ul></ul><ul><ul><li>With high-speed router and switches </li></ul></ul><ul><li>However, it does not provide server guarantee </li></ul><ul><ul><li>Throughput </li></ul></ul><ul><ul><li>Delay </li></ul></ul><ul><ul><li>Jitter </li></ul></ul><ul><ul><li>Reliability </li></ul></ul><ul><ul><li>Priority </li></ul></ul>Optical Networking Services Slide:
    13. 13. Challenge 5: Network Heterogeneity <ul><li>The Internet is fragmented in structure </li></ul><ul><ul><li>LAN, MAN and WAN in terms of area </li></ul></ul><ul><ul><li>Actual domains operated by network service providers </li></ul></ul><ul><li>Network Service providers </li></ul><ul><ul><li>Support a variety of L1-7 protocols </li></ul></ul><ul><ul><li>Realize data transport in their own ways </li></ul></ul><ul><ul><li>Control network by different methods and technologies </li></ul></ul><ul><li>Interface problems </li></ul><ul><ul><li>Device interface: UNI, NNI </li></ul></ul><ul><ul><li>Layer-to-layer: IP QoS to Ethernet CoS </li></ul></ul><ul><ul><li>Switching: Ethernet to MPLS, RPR to MPLS </li></ul></ul>Optical Networking Services Slide:
    14. 14. Agenda <ul><li>Optical Networking </li></ul><ul><li>Challenges </li></ul><ul><li>Service Solutions </li></ul><ul><ul><li>Optics + Ethernet </li></ul></ul><ul><ul><li>Smart bandwidth </li></ul></ul><ul><ul><li>Flexible VPN </li></ul></ul><ul><ul><li>QoS </li></ul></ul><ul><ul><li>Network Coordination </li></ul></ul><ul><li>Killer Applications </li></ul><ul><li>Summary </li></ul>Optical Networking Services Slide:
    15. 15. Solution: Optics + Ethernet <ul><li>Reliable </li></ul>Optical Networking Services 04/14/10 Slide: LAN MAN Fast Simple <ul><li>Optical Networks </li></ul><ul><li>Huge bandwidth </li></ul><ul><li>Fast and reliable </li></ul><ul><li>Ethernet Transport </li></ul><ul><li>Data efficiency </li></ul><ul><li>Simple and scalable </li></ul>O + E
    16. 16. Optical Networking Services Slide: Core Backbone Service POP POP Customer A Customer Premise Virtual RPR Ring Scenario 1: City Network POP Core IOF Customers A, C Customer B Customer A, B Customer C Customers B, C RPR Ring RPR Ring RPR Ring RPR Ring RPR Ring
    17. 17. Scenario 2: Storage Area Network (SAN) Optical Networking Services Slide: RPR Ring Storage Service Provider FC SW Long Haul 10GigE Raid Controller LAN Switch Servers 10 To other SAN islands Users Public Network    x    x Gateway Router 10 10 10 10 10 10    x OXC OXC Router
    18. 18. Smart Bandwidth <ul><li>Bandwidth on Demand </li></ul><ul><ul><li>Schedulable bandwidth provisioning </li></ul></ul><ul><ul><li>Tunable bandwidth allocation </li></ul></ul><ul><ul><li>Dynamic optical links and wavelength establishment </li></ul></ul><ul><li>Load Balance </li></ul><ul><ul><li>Bandwidth fairness </li></ul></ul><ul><ul><li>Traffic re-route </li></ul></ul><ul><li>Use differentiation </li></ul><ul><ul><li>Traffic: sources and destinations </li></ul></ul><ul><ul><li>User: how much you pay, privilege </li></ul></ul><ul><ul><li>Application: medical, science computing </li></ul></ul><ul><ul><li>Content: video streaming, 3D games </li></ul></ul>Optical Networking Services 04/14/10 Slide: <ul><li>Base Technologies </li></ul><ul><ul><li>OE: RPR, 10GigE </li></ul></ul><ul><ul><li>ASON </li></ul></ul><ul><ul><li>MPLS/GMPLS </li></ul></ul><ul><ul><li>Content networking </li></ul></ul>
    19. 19. Flexible VPN Optical Networking Services 04/14/10 Slide: <ul><li>Protocol Identifier (0x8100) </li></ul><ul><li>Priority (per 802.1p) </li></ul>VLAN_ID (12 bits) Ethernet Header Payload 802.1Q Tag OE Header TLS Tag Customer Ethernet Frame <ul><li>Various needs </li></ul><ul><ul><li>L1: Optical VPN </li></ul></ul><ul><ul><li>L2: Ethernet 802.1Q VLAN </li></ul></ul><ul><ul><li>L2: Ethernet Transparent LAN </li></ul></ul><ul><ul><li>L2+: MPLS-based VPN </li></ul></ul><ul><ul><li>L3: IP VPN </li></ul></ul><ul><ul><li>L4+: Content VPN </li></ul></ul><ul><li>Intelligent Control </li></ul><ul><ul><li>VPN on demand </li></ul></ul><ul><ul><li>Dynamic join/drop </li></ul></ul><ul><ul><li>Route adjustment </li></ul></ul><ul><li>Use differentiation </li></ul><ul><ul><li>Enterprise: SBC, Sprint, AOL </li></ul></ul><ul><ul><li>User group: discussion </li></ul></ul><ul><ul><li>App content: games, video conference </li></ul></ul><ul><li>Base technologies </li></ul><ul><ul><li>ASON </li></ul></ul><ul><ul><li>Ethernet </li></ul></ul><ul><ul><li>MPLS/GMPLS </li></ul></ul><ul><ul><li>IPVPN </li></ul></ul><ul><ul><li>Content networking </li></ul></ul>SP Ethernet Header MPLS Labels End-User Ethernet Frame Label CoS TTL
    20. 20. Coordination of Network Controls Optical Networking Services 04/14/10 Slide: <ul><li>Mapping </li></ul><ul><ul><li>IP2OE: IP control to Optical Ethernet control </li></ul></ul><ul><ul><li>OE2M: Optical Ethernet control to MPLS control </li></ul></ul><ul><ul><li>NCIM: network interface mapping </li></ul></ul><ul><ul><ul><li>UNI </li></ul></ul></ul><ul><ul><ul><li>NNI </li></ul></ul></ul><ul><li>Use differentiation </li></ul><ul><ul><li>Network providers: carriers </li></ul></ul><ul><ul><li>Service providers: ISP </li></ul></ul><ul><li>Base technologies </li></ul><ul><ul><li>IP </li></ul></ul><ul><ul><li>ASON </li></ul></ul><ul><ul><li>Ethernet </li></ul></ul><ul><ul><li>MPLS/GMPLS </li></ul></ul>
    21. 21. QoS (Quality of Service) Optical Networking Services 04/14/10 Slide: <ul><li>Mechanisms </li></ul><ul><ul><li>L1: wavelength protection </li></ul></ul><ul><ul><li>L2: Ethernet CoS </li></ul></ul><ul><ul><ul><li>IEEE 801.p priority levels </li></ul></ul></ul><ul><ul><li>L2+: MPLS CoS </li></ul></ul><ul><ul><li>L3: IP QoS </li></ul></ul><ul><ul><ul><li>Diffserv </li></ul></ul></ul><ul><ul><ul><li>Intserv </li></ul></ul></ul><ul><li>Use differentiation </li></ul><ul><ul><li>Network providers: carriers </li></ul></ul><ul><ul><li>Service providers: ISP </li></ul></ul><ul><ul><li>Applications </li></ul></ul><ul><ul><li>Content </li></ul></ul><ul><li>Base technologies </li></ul><ul><ul><li>IP Intserv and Diffserv </li></ul></ul><ul><ul><li>ASON </li></ul></ul><ul><ul><li>Ethernet </li></ul></ul><ul><ul><li>MPLS/GMPLS </li></ul></ul>
    22. 22. Agenda <ul><li>Optical Networking </li></ul><ul><li>Challenges </li></ul><ul><li>Service Solutions </li></ul><ul><li>Killer Applications </li></ul><ul><li>Summary </li></ul>Optical Networking Services 04/14/10 Slide:
    23. 23. Large-volume Data Exchange <ul><li>Optical SAN </li></ul><ul><li>Backup on demand </li></ul><ul><li>Disaster Recovery </li></ul><ul><ul><li>Fast route to restore data after the disaster </li></ul></ul><ul><ul><li>Alternate routes to bypass the network in a disaster </li></ul></ul>Optical Networking Services Slide:
    24. 24. Content Networking <ul><li>Content enabling extensions </li></ul><ul><ul><li>Content VPN </li></ul></ul><ul><ul><li>Content Caching </li></ul></ul><ul><ul><li>Content Multicasting </li></ul></ul><ul><li>Application scenarios </li></ul><ul><ul><li>Video teleconferencing </li></ul></ul><ul><ul><li>Video on demand </li></ul></ul><ul><ul><li>Streaming media </li></ul></ul>Optical Networking Services 04/14/10 Slide:
    25. 25. Distributed Server Groups <ul><li>Servers grouped in the Internet </li></ul><ul><ul><li>In SAN, data storage servers </li></ul></ul><ul><ul><li>In Web, HTTP servers </li></ul></ul><ul><ul><li>In Media, A/V media streaming servers </li></ul></ul><ul><ul><li>In Grid, supper computing servers </li></ul></ul><ul><li>Application scenarios </li></ul><ul><ul><li>Global Load Balance </li></ul></ul><ul><ul><ul><li>Server load fair distributions </li></ul></ul></ul><ul><ul><li>Grid Computing </li></ul></ul><ul><ul><ul><li>Media treatment: CT diagnoses </li></ul></ul></ul><ul><ul><ul><li>CAD: fighter concurrent design </li></ul></ul></ul>Optical Networking Services 04/14/10 Slide:
    26. 26. Agenda <ul><li>Optical Networking </li></ul><ul><li>Challenges </li></ul><ul><li>Service Solutions </li></ul><ul><li>Killer Applications </li></ul><ul><li>Summary </li></ul>Optical Networking Services 04/14/10 Slide:
    27. 27. Summary <ul><li>Optical transport brings abundant bandwidth </li></ul><ul><li>Efficient use of bandwidth becomes crucial </li></ul><ul><li>Network Services enable </li></ul><ul><ul><li>Use network flexibly and transparently </li></ul></ul><ul><ul><li>Add customized intelligence </li></ul></ul><ul><li>Killer Applications night be OVPN or any other dynamic bandwidth provisioning </li></ul>Optical Networking Services 04/14/10 Slide:
    28. 28. Backup Optical Networking Services 04/14/10 Slide:
    29. 29. Resilient Packet Ring (RPR) <ul><li>A winning combination </li></ul><ul><ul><li>“ SONET/DWDM” + Ethernet </li></ul></ul><ul><li>Ring MAC Protocol </li></ul><ul><ul><li>Packet Add/Drop/Pass </li></ul></ul><ul><ul><li>Efficient Multicast/Broadcast </li></ul></ul><ul><li>Effective Use of Bandwidth </li></ul><ul><ul><li>Spatial re-use </li></ul></ul><ul><li>Ring Protection </li></ul><ul><ul><li>Fast and reliable layer 2 protection </li></ul></ul><ul><li>Topology Discovery </li></ul><ul><ul><li>Connectionless route discovery </li></ul></ul><ul><li>Control Access Protocol </li></ul><ul><ul><li>Ensures fair access to ring BW </li></ul></ul><ul><li>Class of Service </li></ul><ul><ul><li>IEEE 802.1p </li></ul></ul>Optical Networking Services 04/14/10 Slide: IEEE RPR
    30. 30. 10 Gigabit Ethernet ( 10-GigE) <ul><li>An immediate extension of GigE from LAN to LAN and WAN </li></ul><ul><ul><li>Same Ethernet MAC protocol </li></ul></ul><ul><ul><li>Same frame format with the same minimum and maximum size </li></ul></ul><ul><ul><li>Fiber-only </li></ul></ul><ul><li>IEEE 802.3ae Standard </li></ul><ul><li>10GEA: 10 GigE Alliance </li></ul>Optical Networking Services 04/14/10 Slide: OC-192 Ethernet IP
    31. 31. Optical Networking Services 04/14/10 Slide: MPLS and Long-range VPNs SP Ethernet Header MPLS Labels End-User Ethernet Frame Label CoS TTL <ul><li>MPLS/GMPLS is the emerging switching protocol in optical core networks </li></ul><ul><li>Long-range VPNs can be established by MPLS labels </li></ul>Backbones MPLS/GMPLS VPN A VPN C VPN B VPN D VPN A VPN B VPN C VPN D <ul><li>PE </li></ul><ul><li>PE </li></ul><ul><li>PE </li></ul><ul><li>CE </li></ul><ul><li>CE </li></ul><ul><li>CE </li></ul><ul><li>CE </li></ul><ul><li>CE </li></ul><ul><li>CE </li></ul><ul><li>CE </li></ul><ul><li>CE </li></ul><ul><li>CE </li></ul><ul><li>P </li></ul><ul><li>P </li></ul><ul><li>P </li></ul><ul><li>P </li></ul>CE - Customer Edge Device PE - Provider Edge Device P - Provider Internal Device <ul><li>CE </li></ul>