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Optical Networking Three networks: LAN, MAN and WAN Leading technologies: ASTN, Smart l, ASON, MPLS, OE, Optical Ethernet (OE): Goal Ethernet Transport (L2) over Optical networks (L1) Benefits Optical agility and reliability Ethernet simplicity and efficiency Seamless transport from LAN to MAN and to WAN Network security Encrypted communication Selective routing Network efficiency Fast transport Extensible intranet and extranet Dynamical connection and route setup
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Optical Networking Services 1
Optical Networking Services
Some slides and most of the graphics are taken from other slides
Tal Lavian [email protected]
Optical Networking Services 2
Research Direction • The research topic that I’m looking after is Applications and
Services Infrastructure for Optical Networking
• 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?
• 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
• 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
Optical Networking Services 3
Agenda
� Optical Networking� Three networks: LAN, MAN and WAN� Leading technologies: ASTN, Smart λ, ASON, MPLS,
OE,
� Challenges
� Service Solutions
� Kil ler Applications
� Summary
Optical Networking Services
10/25/14
Slide: 4
Three networks in The Internet
Long-Haul Core(WAN)
Local Network
(LAN)
ASON
ASON
MetroCore
Backbone
ASON
PX
Access
OPE
ASON
OPE
Metro Network (MAN)
Optical Networking Services
10/25/14
Slide: 5
Management
System
Client Signaling
Client
Traffic
OCC
Optical Switch
UNI
OCC OCC
+
3. Applications (SA Servers)
Service
Agent (SA)
UNI Proxy Signaling
2. Adds Layer for Service Management & Creation•Service Activation•Service Assurance•Customer Care and Billing•Service Control•Policy Services
• Mesh Network Planner
• Mesh Optimizer
• Mesh Capacity Planner
To
ols
Ser
vice
-W
are
Net
wo
rk
Mg
mt
•Fault Detection•Fault Isolation•Fault Correlation•Monitoring
MPLS path establishmen
tNNI
OSPF routing
Optical Routing& Signaling Layer
Topology discovery
Inter-domain I/FOCC(IOC)
Agile Optical Network
ASON : End-to-End Dynamic Connectivity
l’s, OC-N, STS-N
granularity
Optical ASTN (Automatic Switch Transport Network)
Optical Networking Services Slide: 6
Optical Ethernet (OE)� Goal
� Ethernet Transport (L2) over Optical networks (L1)
� Benefits� Optical agility and reliability� Ethernet simplicity and efficiency� Seamless transport from LAN to MAN and to WAN
RPR Standard(Resilient Packet Ring)
•Ring MAC protocol•Ethernet over rings•IEEE 802.17
OC-192
Ethernet
IP
10GigE Standard
•GigE extension•Ethernet over OC-192•IEEE 802.3ae
Optical Networking Services Slide: 7
Agenda� Optical Networking� Challenges
� Bandwidth provisioning� Data transport� Enterprise Networks� QoS� Network Heterogeneity
� Service Solutions� Kil ler Applications� Summary
Optical Networking Services
10/25/14
Slide: 8
OC-192DWDM n x λ
DS1DS3
End User Access Metro Core
Ethernet LAN
LL/FR/ATM1-40Meg
OC-12OC-48OC-192
IP/DATA1GigE 40G+
The Metro Bott leneckThe Metro Bott leneck
Metro Access
Other Sites
10G
Optical Networking Services Slide: 9
Challenge 1: Bandwidth Provisioning
� Network congestion� LAN access to MAN
� Fibers in MAN and WAN� Insufficient use: <50% on lighting� Inefficient use: wavelength under load
� Lack of mechanisms� Dynamic setup� User intelligence
Optical Networking Services Slide: 10
Challenge 2: Data Transport Connectivity Packet Switch
� data-optimized� Ethernet� TCP/IP
� Network use� LAN
� Advantages� Efficient� Simple� Low cost
� Disadvantages� Unreliable
Circuit Switch � Voice-oriented
� SONET� ATM
� Network uses� Metro and Core
� Advantages� Reliable
� Disadvantages� Complicate� High cost
Efficiency ? Reliability
Optical Networking Services Slide: 11
Challenge 3: Enterprise Networks� Network security
� Encrypted communication� Selective routing
� Network eff iciency� Fast transport� Extensible intranet and extranet� Dynamical connection and route setup
Optical Networking Services Slide: 12
Challenge 4: QoS Guarantee� The Internet has rapidly increasing bandwidth
� With the help of optical transport� With high-speed router and switches
� However, it does not provide server guarantee� Throughput� Delay� Jitter� Reliability� Priority
Optical Networking Services Slide: 13
Challenge 5: Network Heterogeneity� The Internet is fragmented in structure
� LAN, MAN and WAN in terms of area� Actual domains operated by network service providers
� Network Service providers� Support a variety of L1-7 protocols� Realize data transport in their own ways� Control network by different methods and technologies
� Interface problems� Device interface: UNI, NNI� Layer-to-layer: IP QoS to Ethernet CoS� Switching: Ethernet to MPLS, RPR to MPLS
Optical Networking Services Slide: 14
Agenda� Optical Networking� Challenges� Service Solutions
� Optics + Ethernet� Smart bandwidth� Flexible VPN� QoS� Network Coordination
� Kil ler Applications� Summary
Optical Networking Services
10/25/14
Slide: 15
O + EO + E
LAN
Solution: Optics + Ethernet
MAN
ReliableFastSimple
Optical Networks•Huge bandwidth•Fast and reliable
Ethernet Transport•Data efficiency•Simple and scalable
Optical Networking Services Slide: 16
Core Backbone
Service POPService POP POPPOP
Customer ACustomer A
Customer Customer PremisePremise
Virtual RPR RingVirtual RPR Ring
Scenario 1: City Network
POPPOP
Core
IOFIOF
Customers Customers A, CA, C
Customer BCustomer BCustomer A, BCustomer A, B
Customer CCustomer C
Customers Customers B, CB, C
RPR Ring
RPR Ring
RPR Ring
RPR Ring
RPR Ring
Optical Networking Services Slide: 17
RPR Ring
Storage Service Provider
FC SW
Long Haul
10GigE 10GigE
Raid Controller
OXC
LAN Switch
Servers
OXC
Router
10
To other SANislands
Users
Public Network
λ1−λ x λ1−λ x
Gateway Router
Scenario 2: Storage Area Network (SAN)
10
1010
10
10
10
λ1−λ x
Optical Networking Services
10/25/14
Slide: 18
Smart Bandwidth
� Bandwidth on Demand� Schedulable bandwidth provisioning� Tunable bandwidth allocation� Dynamic optical links and wavelength
establishment
� Load Balance� Bandwidth fairness� Traffic re-route
� Use differentiation� Traffic: sources and destinations� User: how much you pay, privilege� Application: medical, science computing� Content: video streaming, 3D games
� Base Technologies� OE: RPR, 10GigE� ASON� MPLS/GMPLS� Content networking
Optical Networking Services
10/25/14
Slide: 19
Flexible VPN
•Protocol Identifier (0x8100)•Priority (per 802.1p)
VLAN_ID(12 bits)
Ethernet Header
Payload802.1Q
Tag
OEHeader TLS Tag Customer
Ethernet Frame
� Various needs� L1: Optical VPN� L2: Ethernet 802.1Q VLAN� L2: Ethernet Transparent LAN� L2+: MPLS-based VPN� L3: IP VPN� L4+: Content VPN
� Intelligent Control� VPN on demand� Dynamic join/drop� Route adjustment
� Use differentiation� Enterprise: SBC, Sprint, AOL� User group: discussion� App content: games, video conference
� Base technologies� ASON� Ethernet� MPLS/GMPLS� IPVPN� Content networking
SP Ethernet Header
MPLSLabels
End-User Ethernet Frame
Label CoS TTL
Optical Networking Services
10/25/14
Slide: 20
Coordination of Network Controls� Mapping
� IP2OE: IP control to Optical Ethernet control
� OE2M: Optical Ethernet control to MPLS control
� NCIM: network interface mapping UNI NNI
� Use differentiation� Network providers: carriers� Service providers: ISP
� Base technologies� IP� ASON� Ethernet� MPLS/GMPLS
Optical Networking Services
10/25/14
Slide: 21
QoS (Quality of Service)
� Mechanisms� L1: wavelength protection� L2: Ethernet CoS
IEEE 801.p priority levels� L2+: MPLS CoS� L3: IP QoS
DiffservIntserv
� Use differentiation� Network providers: carriers� Service providers: ISP� Applications� Content
� Base technologies� IP Intserv and Diffserv� ASON� Ethernet� MPLS/GMPLS
Optical Networking Services
10/25/14
Slide: 22
Agenda
� Optical Networking
� Challenges
� Service Solutions
� Kil ler Applications
� Summary
Optical Networking Services Slide: 23
Large-volume Data Exchange� Optical SAN
� Backup on demand
� Disaster Recovery� Fast route to restore data after the disaster� Alternate routes to bypass the network in a disaster
Optical Networking Services
10/25/14
Slide: 24
Content Networking� Content enabling extensions
� Content VPN� Content Caching� Content Multicasting
� Application scenarios� Video teleconferencing� Video on demand� Streaming media
Optical Networking Services
10/25/14
Slide: 25
Distributed Server Groups� Servers grouped in the Internet
� In SAN, data storage servers� In Web, HTTP servers� In Media, A/V media streaming servers� In Grid, supper computing servers
� Application scenarios� Global Load Balance
Server load fair distributions� Grid Computing
Media treatment: CT diagnoses CAD: f ighter concurrent design
Optical Networking Services
10/25/14
Slide: 26
Agenda
� Optical Networking
� Challenges
� Service Solutions
� Kil ler Applications
� Summary
Optical Networking Services
10/25/14
Slide: 27
Summary� Optical transport brings abundant bandwidth
� Efficient use of bandwidth becomes crucial
� Network Services enable� Use network flexibly and transparently� Add customized intelligence
� Killer Applications night be OVPN or any other dynamic bandwidth provisioning
Optical Networking Services
10/25/14
Slide: 28
Backup
Optical Networking Services
10/25/14
Slide: 29
Resil ient Packet Ring (RPR)� A winning combination
� “SONET/DWDM” + Ethernet � Ring MAC Protocol
� Packet Add/Drop/Pass� Efficient Mult icast/Broadcast
� Effective Use of Bandwidth � Spatial re-use
� Ring Protection � Fast and reliable layer 2 protection
� Topology Discovery� Connectionless route discovery
� Control Access Protocol� Ensures fair access to ring BW
� Class of Service� IEEE 802.1p
IEEE
RPR
Optical Networking Services
10/25/14
Slide: 30
10 Gigabit Ethernet (10-GigE)� An immediate extension of GigE from LAN to LAN
and WAN� Same Ethernet MAC protocol� Same frame format with the same minimum and maximum size� Fiber-only
� IEEE 802.3ae Standard� 10GEA: 10 GigE All iance
OC-192
Ethernet
IP
Optical Networking Services
10/25/14
Slide: 31
MPLS and Long-range VPNs
BackbonesMPLS/GMPLS
VPN A
VPN C
VPN B
VPN D
VPN A
VPN B
VPN C
VPN D
PE
PE
PE
CE
CE
CE
CE
CE
CE
CE
CE
CE P
P
P P
CE - Customer Edge DevicePE - Provider Edge Device
P - Provider Internal Device
CE
SP Ethernet Header
MPLSLabels
End-User Ethernet Frame
Label CoS TTL
• MPLS/GMPLS is the emerging switching protocol in optical core networks
• Long-range VPNs can be established by MPLS labels