Optical Services - Computer Science

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26 Οκτ 2013 (πριν από 3 χρόνια και 5 μήνες)

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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

tlavian@eecs.berkeley.edu

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

l
, ASON, MPLS, OE,


Challenges


Service Solutions


Killer Applications


Summary


Optical Networking Services

10/26/2013

Slide:
4

Three networks in The Internet

Long
-
Haul Core

(WAN)

Local

Network

(LAN)

ASON

ASON

Metro

Core

Backbone

ASON

PX

Access

ASON

Metro Network

(MAN)

Optical Networking Services

10/26/2013

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


Fault Detection


Fault Isolation


Fault Correlation


Monitoring

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

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


Killer Applications


Summary


Optical Networking Services

10/26/2013

Slide:
8

OC
-
192

DWDM n x
l

D匱

D匳

End User

Access

Metro

Core

Ethernet LAN

LL/FR/ATM

1
-
40Meg

OC
-
12

OC
-
48

OC
-
192

IP/DATA

1GigE

40G+

The Metro Bottleneck

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 efficiency


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


Killer Applications


Summary


Optical Networking Services

10/26/2013

Slide:
15

O + E

LAN

Solution:
Optics + Ethernet

MAN

Reliable

Fast

Simple

Optical Networks


Huge bandwidth


Fast and reliable

Ethernet Transport


Data efficiency


Simple and scalable

Optical Networking Services

Slide:
16

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

Optical Networking Services

Slide:
17

RPR Ring

Storage Service Provider

FC SW

Long Haul



10GigE

Raid Controller

OXC



LAN Switch

Servers

OXC

Router

10

To other SAN

islands

Users

Public

Network

l
1
-
l
x

l
1
-
l
x

Gateway

Router

Scenario 2: Storage Area Network (SAN)

10

10

10

10

10

10





l
1
-
l
x

Optical Networking Services

10/26/2013

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

10/26/2013

Slide:
19

Flexible VPN


Protocol Identifier (0x8100)


Priority (per 802.1p)

VLAN_ID

(12 bits)


Ethernet

Header

Payload

802.1Q

Tag

OE

Header

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

MPLS

Labels

End
-
User

Ethernet Frame

Label

CoS

TTL

Optical Networking Services

10/26/2013

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

10/26/2013

Slide:
21

QoS (Quality of Service)


Mechanisms


L1: wavelength protection


L2: Ethernet CoS


IEEE 801.p priority levels


L2+: MPLS CoS


L3: IP QoS


Diffserv


Intserv


Use differentiation


Network providers: carriers


Service providers: ISP


Applications


Content


Base technologies


IP Intserv and Diffserv


ASON


Ethernet


MPLS/GMPLS

Optical Networking Services

10/26/2013

Slide:
22

Agenda


Optical Networking


Challenges


Service Solutions


Killer 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

10/26/2013

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

10/26/2013

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: fighter concurrent design


Optical Networking Services

10/26/2013

Slide:
26

Agenda


Optical Networking


Challenges


Service Solutions


Killer Applications


Summary


Optical Networking Services

10/26/2013

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

10/26/2013

Slide:
28

Backup

Optical Networking Services

10/26/2013

Slide:
29

Resilient Packet Ring (RPR)


A winning combination



SONET/DWDM” + Ethernet



Ring MAC Protocol


Packet Add/Drop/Pass


Efficient Multicast/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

10/26/2013

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 Alliance

OC
-
192

Ethernet

IP

Optical Networking Services

10/26/2013

Slide:
31

MPLS and Long
-
range VPNs

Backbones

MPLS/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
Device

PE
-

Provider Edge Device

P
-

Provider Internal
Device


CE

SP Ethernet
Header

MPLS

Labels

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