Carrier Ethernet-Based
Converged Services Infrastructure:
Technology Options
Ralph Santitoro
Carrier Ethernet Market Development
Ralph.Santitoro@us.Fujitsu.com
November 2, 2010
Contents
 Ethernet Service Delivery Technology Evolution
 Improving Network Bandwidth Efficiency
 Convergence Technology Considerations
Carrier Ethernet-Based Converged Services Infrastructure: Nov. 2, 2010
© Copyright 2010 Fujitsu Network Communications,
Inc. All Ethernet:
rights reserved.
2
Connection-Oriented
A No-Nonsense Overview
Ethernet Service Delivery
Technology Evolution
 Transport Technology Evolution: SONET to OTN
 Connection Oriented Ethernet (COE)
 Different Approaches to COE
Carrier Ethernet-Based Converged Services Infrastructure:
© Copyright
Nov. 2, 2010
2010 Fujitsu Network Communications, Inc. All rights reserved.
Transport Technology Evolution
Container size compatibility with Ethernet port speeds
SONET (1.5Mbps to 10Gbps)
OTN (1Gbps to 100+Gbps)
 Container Granularity
 Container Granularity
 1.5Mbps (LO – VT1.5)
 50Mbps (HO – STS)
 Ethernet Fit





10MbE  (OC-3)
100MbE  (OC-3)
1GbE  (OC-48)
10GbE**  (OC-192)
100GbE - N/A
Carrier Ethernet-Based Converged Services Infrastructure: Nov. 2, 2010





1.25Gbps (ODU0)
2.5Gbps (ODU1)
10Gbps (ODU2)
40Gbps (ODU3)
100Gbps (ODU4)
 Ethernet Fit





10MbE - N/A
100MbE - N/A
1GbE  (~1/2 OTU1)
10GbE  (OTU2e)
100GbE  (OTU4)
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4
Connection-Oriented Ethernet
 Ideal convergence technology for:
 Mobile/Cell Tower Backhaul
 High Performance Business Ethernet Services
 Why ?
 Guaranteed CIR
• CIR bandwidth reserved per EVC, OVC or CoS
• CIR-based services unaffected by oversubscribed (EIR) services
 Consistent QoS Performance
• EVC or OVC traverses pre-determined working or protect path
• Paths engineered to meet service packet latency & loss requirements
 High Security
• COE uses few protocols
• The more protocols, the more security vulnerabilities
COE provides the Flexibility and Scalability of Ethernet
with the Performance, Reliability and Security of SONET
Carrier Ethernet-Based Converged Services Infrastructure: Nov. 2, 2010
© Copyright 2010 Fujitsu Network Communications, Inc. All rights reserved.
5
Different approaches to COE
Technology selection depends on the problem you’re trying to solve
Ethernet-centric COE
MPLS-centric COE
Static PW
Eth PW
MPLS-TP
T-MPLS
MPLS LSP
PBB-TE
PBT
PW Eth
Eth
• Ethernet
• MPLS Pseudowire (PW)
• MPLS Label Switched Path (LSP)

Optimized for Multi-Service
Transport





New standards being developed
Augmenting MPLS standards
BMAC/BVID or C/SVID
Eth
• Ethernet

Optimized for Ethernet Service
Delivery and Transport


Three OAM Layers
Less optimal for Ethernet
service delivery and transport
Standards Under Development
Ethernet
VLAN Tag
Tag
Switching

One OAM Layer
Less optimal for multi-service
transport
Standardized Now

Reuses existing Carrier Ethernet
standards, e.g., Service OAM
Ethernet-centric COE optimized for Ethernet/IP Service Transport
MPLS-centric COE optimized for Multi-service Transport
Carrier Ethernet-Based Converged Services Infrastructure: Nov. 2, 2010
© Copyright 2010 Fujitsu Network Communications,
Inc. All Ethernet:
rights reserved.
6
Connection-Oriented
A No-Nonsense Overview
Improving Network Bandwidth
Efficiency with COE
 COE over SONET
 COE over OTN
Carrier Ethernet-Based Converged Services Infrastructure:
© Copyright
Nov. 2, 2010
2010 Fujitsu Network Communications, Inc. All rights reserved.
Improving Network Bandwidth Efficiency
- COE over SONET
 Ethernet over SONET (EoS) Challenges
1. EoS doesn’t support aggregation
• EoS is a port-based service
• Ethernet switch added for aggregation
Eth
MSPP
SONET
Eth
2. EoS service bandwidth dictated by SONET
• EoS bandwidth in 50Mbps STS increments
• Other EVC/OVC rates waste SONET bandwidth
 COE over SONET
 Supports service aggregation
MSPP
PE
Router
MSPP
SONET VCG
30Mbps
wasted
50Mbps
20Mbps EVC
Eth
P-ONP
Eth
P-ONP
COE
over
SONET
P-ONP
PE
Router
 Aggregates EVCs/OVCs to best match SONET VCG size
• Can achieve 100% bandwidth utilization
• Also supports oversubscribed EIR bandwidth
50Mbps
20Mbps EVC
10Mbps EVC
20Mbps EVC
More BW Efficiency = More Service Revenue and Higher Margins
Carrier Ethernet-Based Converged Services Infrastructure: Nov. 2, 2010
© Copyright 2010 Fujitsu Network Communications, Inc. All rights reserved.
8
Improving Network Bandwidth Efficiency
- COE over OTN
 Ethernet over OTN Challenges
 OTN isn’t efficient under 1Gbps
• Smallest container size is ODU0 (1.25Gbps)
• Most popular Ethernet services are < 1Gbps
1.25Gbps 1GbE
ODU0
~800Mbps
wasted
200Mbps EVC
 OTN doesn’t support bandwidth oversubscription
• A Layer 1 service doesn’t provide statistical multiplexing
 COE over OTN
 COE aggregates EVCs/OVCs
• Significantly improved bandwidth utilization for Ethernet services < 1Gbps
• Also supports oversubscribed EIR bandwidth
500Mbps EVC
1.25Gbps
ODU0
1GbE
4x100Mbps EVC
2x50Mbps EVC
COE + OTN = A very bandwidth efficient solution
Carrier Ethernet-Based Converged Services Infrastructure: Nov. 2, 2010
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9
Convergence Technology
Considerations for Ethernet Services
E
P
L
E
V
P
L
E
L
A
N
Metro Access
Metro Aggregation
Core / LH Network
X X X COE (up to 10GbE)
COE (10/100GbE)
MPLS (10/100GbE NNI)
COE (up to 10GbE)
COE (10/100GbE)
OTN (OTU3/4 NNI)
MPLS (10/100GbE)
OTN (OTU3/4 NNI)
OTN (OTU2/3/4)
OTN (OTU3/4 NNI)
X X
X X X COE (up to 10GbE)
X
OTN (OTU1/2)
 Cost of 10G/40G/100G NNI to Core Network
 Does an OTN port cost less than an Ethernet port?
 Ethernet Service Fault Management
 How do you propagate faults across technologies ?
 Type of Services being delivered
 Port-based EPL (like a Layer 1 private line) or EP-LAN
 VLAN-aware EVPL or EVP-LAN services with service multiplexing
 Ethernet Access to IP services
Carrier Ethernet-Based Converged Services Infrastructure: Nov. 2, 2010
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10
Summary
 COE significantly increases BW efficiency over
legacy SONET and NG OTN transport networks
 Good choice for Access and Aggregation Networks
 OTN useful for high bandwidth EPL services
 Ethernet port speeds better match OTN container sizes
 Better bandwidth utilization than EoS EPL services
 Many considerations in technology selection
 10G/40G/100G port costs for NNI handoff to core network
 Fault propagation capabilities
 Types of services to be delivered
Carrier Ethernet-Based Converged Services Infrastructure: Nov. 2, 2010
© Copyright 2010 Fujitsu Network Communications, Inc. All rights reserved.
11
Carrier Ethernet-Based Converged Services Infrastructure: Nov. 2, 2010
© Copyright 2010 Fujitsu Network Communications, Inc. All rights reserved.
12