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Lightpaths: why, what (and how!) Bram Peeters, SURFnet Network Services SNE College, 21 st of March, Utrecht. # u s e r s. S B ≈ 40 Gb/s. S C ≈ 100 Gb/s. A. S A ≈ 20 Gb/s. B. C. ADSL. GigE. BW requirements. Some history: Lightpaths and OPNs - network users and uses.

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Lightpaths: why, what (and how!)Bram Peeters, SURFnet Network ServicesSNE College, 21st of March, Utrecht


Some history lightpaths and opns network users and uses

#

u

s

e

r

s

SB ≈ 40 Gb/s

SC ≈ 100 Gb/s

A

SA ≈ 20 Gb/s

B

C

ADSL

GigE

BW requirements

Some history: Lightpaths and OPNs -network users and uses

Required capacity per user category:

  • A: End users: web, e-mail

  • B: Institutions: applications, VPNs, shared service center

  • C: Researchers: computing, data grids, virtual-presence

This slide courtesy of Cees de Laat


The basic light path
The Basic Light Path

A definition (one of many)

  • “reliable, point-to-point connection, with guaranteed bandwidth and fixed delay”

  • SURFnet standard: GE port at the client side

  • L2 connection => building stone OPN, direct connection projects

  • OPN = Optical Private Network

GE

GE



A network for lightpaths

End-to-End Light Path

A network for lightpaths

GLORIAD

AMS2

AMS1

Nortel

HDXc

European

Light Paths

Nortel

transport

box

Nortel

transport

box

Intercontinental

Light Paths

..

SURFnet6

Common Photonic Layer

Nortel

transport

box

Nortel

transport

box

Customer

equipment

Customer

equipment

End user

SURFnet infrastructure

End user

Non-SURFnet


Lightpaths implementation
Lightpaths: implementation

  • Standard LAN interface (GE, 10GE)

  • Uses the qualities of the transport network to achieve

    • Performance: capacity, availability

    • Security: OSI L1

    • Flexibility: locations, topologies

    • Simplicity: ‘transparent’, predictable/fixed latency

    • Costs of usage

GE

GE


Hybrid optical packet networks from a ge to wavelengths

packet

IP

Ethernet

HDLC

10 G LAN PHY

10 G WAN PHY

1 G PHY

optical

GFP (G.7041)

SDH (G.707)

Optical Fibre

Hybrid Optical/Packet Networks – from a GE to wavelengths

Courtesy of John Graham


Time division multiplexing

A

B

C

D

E

Time Division Multiplexing

A

8

7

6

5

4

3

2

1

B

MUX / DEMUX

MUX / DEMUX

C

Z

Z

D

E

A  Z:1

E  Z:1

STM-64: 10 Gbit/s – 64 x 150 Mbit/s

STM-16: 2.5 Gbit/s – 16 x 150 Mbits/s

Courtesy of John Graham


Basic node architecture a bit on next gen sdh sonet

X

X

X

Basic Node Architecture – A bit on next-gen SDH / SONET

10G

GE

X

10G

GE

GE

10G

GE

10G

crossconnect

Client side

X

network side - SDH


Making lightpaths reliable

Model 2: “path protected”

  • GE kinterface

  • 1 client port

  • 1+1 protected!

  • Fiber breuk => switch to protecting path < 60 ms

  • Good, clear guarantees

OME

OME

GE

GE

working

protecting

Making Lightpaths reliable

Model 1: Single

  • GE interface

  • 1 client port

  • Fiber cut or failing equipment => service gone

  • Poor guarantees!

OME

OME

GE

GE


More models

Model 4: let’s have it even more reliable

  • 2 client ports

  • redundant, protected

  • Node is final single point of failure

  • 0 to 1G each path

  • Failure always covered (for 1G)

  • THESE ARE TWO PROTECTED LPs!!!

OME

OME

GE

working 1

GE

protecting 2

GE

GE

protecting 1

working 2

More models

Model 3: redundant – not protected

  • 2 client ports

  • redundant, not protected

  • Node is single point of failure

  • 0 to 1G each path

  • Failure always impacts client experience

OME

OME

GE

working

GE

GE

GE

working


A network with lightpaths
A network with lightpaths?

  • Designing a network to work with lightpaths demands some attention

    • Simple solution: direct point to point between two ‘boxes’ --> not really a network…

    • Complex solution: real L2 network???

    • Routed solution, but a single admin domain



Artez opn

Firewall to Internet - uplink 1 Gb/s

SURFnet LP 1Gb

SURFnet LP 1Gb

Managed

Dark fiber

Managed

Dark fiber

Artez OPN

Nieuwe situatie

internet

Arnhem

Oude Kraan

Zwolle

Stadsmuur

Zwolle

Sophia

Arnhem

Onderlangs

Enschede

AKI



Application specific opns
Application specific OPNs

University dept

High Energy

Physics Network

CERN

Healthcare

OPN

Research Network

University

University

Institute Optical

Private Network

eVLBI

Network

Telescope

site


Large hadron collider high level network architecture
Large Hadron Collider:high-level network architecture


The near future dynamic user schedulable lps

“USI” – User to Service Interface (web GUI, API)

Control plane

Admin

The (near!) future: Dynamic, user schedulable LPs

public

DRAC

private

User

Nortel

OME

6500

Nortel

OME

6500

Nortel

OME

6500

CPE

Nortel

OME

6500

1 GE

Customer

equipment

CPE

1 GE

Customer

equipment

resource

SURFnet infrastructure

Non-SURFnet



A manageable service finding the right place for management functions

Group manager

  • Add users to group

  • Manage user rights

  • Get accounting of service usage

  • Request more ports!

Service manager

  • Add network resources to DRAC

  • Create groups

  • Assign port resources and policy to group

  • Allocate to group manager

Network operators

  • Know about the service

  • Don’t want to care about provisioning alarms

  • Manage network incidents

  • Don’t provision on DRAC resource!

A manageable serviceFinding the right place for management functions

Service users

  • Get registered with group(s)

  • Log on

  • Schedule services within group

  • Use service

  • Verify service

USER COMMUNITY

SURFNET



Verder

Verder:

09:30 uur: Ontvangst met koffie

10:00 uur: Inleiding SURFnet en GigaPort – Roy van Schaik

10:20 uur: Fotonica in SURFnet6 - Wouter Huisman

10:50 uur: Bio-break

11:05 uur: Lightpaths, hoe, wat en waarom - Bram Peeters

11:35 uur: SURFnet6 Reporting and monitoring - Hans Trompert

12:00 uur: Lunch

12:30 uur: Einde


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