Optical Networking Services
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Transcript of Optical Networking Services
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)
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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
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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
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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
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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
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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
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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
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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
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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
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Slide: 24
Content Networking� Content enabling extensions
� Content VPN� Content Caching� Content Multicasting
� Application scenarios� Video teleconferencing� Video on demand� Streaming media
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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
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Slide: 26
Agenda
� Optical Networking
� Challenges
� Service Solutions
� Kil ler Applications
� Summary
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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
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Slide: 28
Backup
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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
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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
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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