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8/6/2019 Ethernet Services Over Packet Aware Transport Final
1/20
Ethernet Services over PacketAware Transport
8/6/2019 Ethernet Services Over Packet Aware Transport Final
2/20
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
8/6/2019 Ethernet Services Over Packet Aware Transport Final
3/20
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
8/6/2019 Ethernet Services Over Packet Aware Transport Final
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Benefits of Packet-Aware Transport
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
8/6/2019 Ethernet Services Over Packet Aware Transport Final
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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
8/6/2019 Ethernet Services Over Packet Aware Transport Final
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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
8/6/2019 Ethernet Services Over Packet Aware Transport Final
7/20
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
8/6/2019 Ethernet Services Over Packet Aware Transport Final
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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
8/6/2019 Ethernet Services Over Packet Aware Transport Final
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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
8/6/2019 Ethernet Services Over Packet Aware Transport Final
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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
8/6/2019 Ethernet Services Over Packet Aware Transport Final
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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
8/6/2019 Ethernet Services Over Packet Aware Transport Final
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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
Benefits of Packet-Aware Transport
8/6/2019 Ethernet Services Over Packet Aware Transport Final
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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
8/6/2019 Ethernet Services Over Packet Aware Transport Final
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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
8/6/2019 Ethernet Services Over Packet Aware Transport Final
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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
8/6/2019 Ethernet Services Over Packet Aware Transport Final
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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
8/6/2019 Ethernet Services Over Packet Aware Transport Final
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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
8/6/2019 Ethernet Services Over Packet Aware Transport Final
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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
8/6/2019 Ethernet Services Over Packet Aware Transport Final
19/20
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