ethernet services over packet aware transport final

8/6/2019 Ethernet Services Over Packet Aware Transport Final

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Ethernet Services over PacketAware Transport


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Benefits of Packet-Aware Transport

History and Goals of Packet Aware TransportHistory and Goals of Packet Aware Transport

Benefits of Packet Aware TransportBenefits of Packet Aware Transport

Evolution of SONET/SDH EquipmentEvolution of SONET/SDH Equipment

Evolution of Ethernet EquipmentEvolution of Ethernet Equipment

Service Interworking with MPLSService Interworking with MPLS


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Ethernet Services over Packet Aware Transport

History of Packet Aware Transport Late 1990s: Proprietary Ethernet over Sonet/SDH gear

2001-present: Standards-based data-aware Sonet/SDH solutions (GFP,VCAT, LCAS)

2002-present: Metro Ethernet solutions based on pure Ethernet, WDM &MPLS as pure-packet alternative to Sonet/SDH

2005: End-to-end architectures evolve beyond point solutions

Goals for Packet Aware Transport

Reduce capex for packet services transport

Support legacy traffic & services consistent with existing infrastructure

Reduce opex through functional integration of packet & transport

Increase service provisioning times

Improve bandwidth efficiency associated with multiple grades of packetservices transport


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Transparently multiplex different types of traffic onto a single Sonet/SDH pipe

Distinguish between high-priority and low-priority traffic within the Sonet/SDH

Bridge converged core IP network & metro/access Sonet/SDH network

Provision services end-to-end using standards-based MPLS signaling

Enable handoff of all services on one universal port

Eliminate the need to crossconnect data services at multiple locations

Aggregate traffic on handoff interfaces to reduce access charges

Converge on Ethernet ports and service for many interfaces


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Packet-Aware Transport Model

SONET/SDH

SONET/SDH

MPLS Core

MPLSCommon

Core

MPLSCommon

Core

OpticalCore

OpticalCore

AccessEthernet

Packet ADM

MSPP

WDM / PON

MetroPacket ADM

Ethernet

MSPP

Router

WDM

CoreRouter

SONET/SDH

WDM

Packet-Aware

Transport

Network

Virtual Circuits

Universal

Port

OC-n

PortOCn

OCn

OCn

Ethernet

Ethernet

ATM

ATM

Frame

Relay

Frame

Relay

CustomerCLE


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TDM Centric vs. Packet Centric

Frame

ATMIP

Ethernet

Frame

ATMIP

Ethernet

Pseudo-wiresPseudo-wires

Access Ring

3/1

DCS

ADMIP

Router

ATM

Switch

Frame

Switch

Access

Packet Ring

Packet-

aware

MSP

Service

Edge

Integrated architectures

Bandwidth-efficient

Hardware cost-effective-

Feature-rich

EvolutionEvolution

Frame

ATM

IP

Ethernet

Frame

ATM

IP

Ethernet

TDM-

Encapsulated

TDM-

Encapsulated

ADM

PL

Data

Same:

Reliability Security Performance

Same:

Reliability Security Performance

Private

Line

Data3/3

DCS

1/0

DCS


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Enabling Technologies: Virtual Concatenation

Radically improves data/Ethernet transport efficiency

More granular than typical Sonet concatenations with full legacySonet compatibility

Dynamicallycreated N x STS1 or N x VT1.5 Sonet channels forEthernet transport (N = 1, 2, 3)

OC192

STS3c

2xSTS1 VC

7xVT1.5 VC

STS1

100-Mbit/s Ethernet

10-Mbit/s Ethernet


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Enabling Technologies:Generic Framing Procedure (GFP)

Carriers required new, more broadly applicable method of mapping new servicesto their transport networks

Packet-over-Sonet, native Ethernet, Fiber Channel, ESCON & Resilient PacketRing (RPR) all map to SDH/Sonet equipment using GFP

IP Data Services StorageServices

GE, ESCON

FC/FICONGE, Ethernet RPRATM10GEPDH

DWDM

WIS HDLC

Virtual Concatenation

Sonet / SDHOTN

Fu

ture

Serv

ices

Lam

bda

Serv

ices

Frame GFP

PPP (POS)

Transparent GFP


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Enabling Technologies: Resilient Packet Ring

2-fiber ring topology; each station performs:add, drop, copy

Data rates of 155-Mbit/s to 10-Gbit/s

& beyond

Packet-based traffic management for

3 classes of service

Sub-50ms protection for all services

Bandwidth efficiency

Efficient statistical multiplexing

Spatial reuse Protection per CIR, and notper channel

Fairness (weighted)

Support for both Sonet & Ethernet PHY

MACBW

Monitor


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SONET Evolves for Packet Efficiencies

Sonet/SDH PHY

TDM Fabric

Traditional ADM

STS-1 VT1.5

Sonet/SDH PHY

TDM Fabric

Hybrid ADM

STS-1 VT1.5Packet

Services

Sonet/SDH PHY

Packet Fabric

Service Aware ADM

STS-1,

VT1.5Packet Services

Time

Add/drop circuits

No support for packet

services

Distributed DXC

Mapping of packet services

to circuits

Some local packet

switching

Optimized for packet

multiplexing

Mapping of circuits over

packets

Traditional synchronization

Circuits Packets


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Core POPCentral ExchangeMetro Network

Local ExchangeAccess Network

Customer

Managed Ethernet access

Data services

Dual-homingfor higheravailability

Physical ringor pt-pt mesh

optionsPositives Very low CAPEX

Inexpensive compact units

Efficiency through aggregation

Very low OPEX Simple to deploy and operate

Full OAM

Connection oriented approach

Carrier class

Secure traffic separation

Scalable

Future proof

Ideal for profitablemainstream rolloutIdeal for profitable

mainstream rollout


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Carrier-class Ethernet mixed deployment

Aggregation

Demarcationx 10

P

PE PE

Aggregation 2

x 10

Aggregation

& switching

x 10 x 10

x 10

Aggregation

Demarcation

Metrocore

Metroaccess

CP


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Aggregation network putting it all together

Integrated Ethernet

access infrastructurefor enterprise,

business and retailmarket

Aggregation anddemarcation layer

Metro PoP

Service edgeswitch or router

ProtectedGigabit Ethernet

ring

Business /retail

Enterprise /business

10 x 10/1006 x 10/100/1000

FE

FEGE

GE

Network services

layer


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Scalable Ethernet access solutions

Secure connection oriented transport

Statistical multiplexing

Flexible bandwidth options from 1 to 1000Mbit/s

Most cost-effective solution for carrier mass rollout

MetroEthernet Ethernet

Ethernet

Customer

premise

FSPManagementSuite

M

etro

ac

cess

Portaggregation

Portaggregation

Portextension

Portextension

Ethernetbackhaul

Ethernetbackhaul

Metro

core


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Extending Ethernet Transport into core

transport

Rapidly scale and add new Ethernet services over existing fiber infrastructure

Extend distances up to hundreds of kilometers

Natural extension in to core/access transport

Logicalconnection

FSPManagementSuite

Ethernet Ethernet

Level

Of

Aggregation


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MPLS Evolves the Metro

FSP 150CP

FSP 150Mx

FSP 150CP

PoP#2PoP#1

FSP 150CP

x10 x10

FSP 150CP

x10 x10

PoP#4PoP#3

FSP 150MxFSP 150Mx

VLAN/MPLS/IP mapping

in metro edge device

The Internet

Internet peering

location

Customer A logical path

Customer B logical path

Access

infrastructure

Metro core


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MPLS Evolves the Metro and Core

MPLS-enabled core network brings packet-awareness

Network services defined at the edge of the MPLS core

network Enhanced Ethernet switching services

Other IP-enabled services, e.g., IP VPN, DIA, VOIP

Optical

Core

Transport

IPNetwork

IPNetwork

MPLSCommon

Core

MPLSCommon

Core

VoiceNetwork

ATM/FRNetworkFR UNI

Ports/IPFR

T3FR

IMA NxT1

FR NNI

ATM UNI

Ethernet

DS1/DS3

OC-3/12/48PPP/HDLC

ATM

IP

Eth

FR

Optical

Core

TransportEvolution

Serv

ice

Ed

ge

ethernet services over packet aware transport final

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