Download Introduction to the MEF

Combining
Ethernet and Circuit
Services
presented at
23th Oct 2006
Overview
• Ethernet transport is a key enabler for Ethernet (& IP)
services
– Uniquely meets most stringent service requirements
– Improve service coverage and time to market
– Accommodates today’s transport infrastructure and enables for
future migration
• Key applications in
–
–
–
–
Residential triple play backbones
Wireless access/backhaul
Data center networking
Resilient access to switched/routed data services networks
2
Background
To reduce operating and capital expenditures, many
enterprises are considering consolidating their voice,
data, and video traffic onto a single converged, packetbased network
Despite the availability of Ethernet metro and WAN services,
many enterprises are still searching for solutions that fully
address their evolving requirements
Revenues from traditional frame relay, ATM and TDM
private line services delivered over separate network
infrastructures continue to shrink, but will take a long
time to disappear
Co-existence of Ethernet and other services is a necessity !!
3
Challenges for Carriers
Carrier Challenges
Carrier Ethernet Solution
Scalability
(MACs, VLANs, Nodes)
EoMPLS
Differentiated services
on one network
Hard QoS
Carrier-class
Non-stop reliability
Service migration
Service interworking
Carrier Ethernet solutions respond to carrier challenges
4
Multiple Services – Single Network
NOTE: View this slide in
presentation mode.
IP
FR
IP
IP
Business Services
Network
Infrastructure
AT
M
• Frame Relay
Consumer Services• DSL Back Haul
Network
• Ethernet TLS VPNs
Infrastructure
• Internet Access
• IP Sec & GRE VPNs
TD
M
ET
H
IP/MPLS
Ethernet
DS
Multiple Services
L
Wireles
s
ATM
Business
Customers
Revenue
Consumer
Revenue
IP VPNs
FR/ATM VPNs
Ethernet VPNs
MPLS Enables Convergence
5
Service Interworking
Layer 3 VPN
Layer 3 VPN
(IP)
(IP)
Ethernet
Ethernet
IP/MPLS Core
Layer 2 VPN
(FR/ATM)
PE
PE
Layer 2 VPN
(FR/ATM)
– Service Interworking enables existing FR/ATM customers to
communicate with new IP/Ethernet customers
– Service Interworking enables any customer to exchange data with any
other, regardless of protocol
– Provides ATM-like hard QoS guarantees for IP and Ethernet services
enabling customized per-customer/per-service SLAs
6
Service Interworking Example
Bank A
LSP A
LSP B
FR
PE
Bank B
PE
Ethernet
IP/MPLS Core
Bank A
Bank A
ATM
FR
 Service Interworking is a key enabler




Increases Addressable Market
Lowers Capital Expenditures
Increases Flexibility
Seamless Integration for the Customer
Service Interworking is a must to address current as well as new customers
7
Example End to End Services
Network Architecture
Core
Aggregation
8830
To National or Off-Net Customers
Internet
Access
8813-311
Ethernet 8813-311
Access Ring
8830
8860
IP
Metro
8813-311
Gigabit
Ethernet
PSTN
8815-5000
8813-427
MPLS
Metro
8813-311
Access
Network
8830
Copper
Fiber
Enabled Services
ATM /
Frame
8813-311v
Multipoint Ethernet
8830
8830
8840
8813-46
Point-to-Point Ethernet
8830
IP or IP/MPLS
Backbone
Customer Premises
- Internet Access
- TLS
- VPLS
-
IPVPNs (2547bis)
Off-net TDM Access
TDM over Ethernet
VoIP and Video
Internet Access
8815-2200
Off-net TDM Access
TDM over Ethernet
8
Convergence Technologies
SynEth
Enh1588
IPTV
CESSync
WiMax
CES
WiFi
EoPDH
MEth
DoC
OC-3, OC-12
MPLS
EoS
ADSL
FR
3G
VoIP
VDSL
xPON
FCoS
2G
OC-48/-192
ATM
T/E
Key:
Sync over PSN
Not Ethernet-based
Ethernet-based
Partially Ethernet-based
Ref: "Crossing the Chasm" by Geoffrey A. Moore 9
TDM Convergence Technologies
Customer Side (type)
CES
TDM Signal
Framing and OHT
Adaptation
EoS
EoPDH
RTP (opt.)
Ethernet
Ethernet
UDP/IP (opt.)
GFP-T or GFP-F
GFP-F
MPLS (opt.)
VCAT & LCAS
VCAT & LCAS
VLAN (opt.)
SONET/SDH
T/E Carrier
Framing & OHT
Framing & OHT
Ethernet
SONET/SDH
T/E Carrier
PHY
PHY
Eth PHY
Provider Side (typ.)
10
Sync-over-Packet Network View
xPON
HDX, IC
Sync IWF
PRS
xPON ONT
IWF
CES
OCC Sync
DOCSIS
HDX, CC sync
CMTS
GE, 10GE
FDX, CC
GE, 10GE
FDX, CC
Sync IWF
ESS
IWF
ESS
PRS
SONET/SDH
FDX, CC
GE, 10GE
FDX, CC
SONET/
SDH
Network
ADM
ADM
GE, 10GE
FDX, CC
Sync IWF
AFE
Clock
IWF
OCC
ADM
GE, 10GE
FDX, CC
Metro
Ethernet
Network
CES
Sync
ESS
xDSL
FDX, CC
ESS
IP-DSLAM
GE, 10GE
FDX, CC
ADM
GE, 10GE
FDX, CC
CES
Sync
RNC
Iub: FE, GE
FDX, CC
3G
Node B
Sync IWF
Local
Clock
IWF
CES
Sync
WiMax
Base St
CC = Continuous Carrier
IC = Intermittent Carrier
11
Sync and Incumbent Carriers
Incumbent carriers will want...
– High-quality sync --> Potential differentiator (or maintain parity)
– Predictable, reliable, deterministic sync...not traffic-dependent
– Proven technology, low risk (conservative approach)
– Hierarchical clock distribution which derives from SONET/SDH
– Easy fit: Similar OSS & craft setup and management
– Always operate at the lowest feasible network level
• Reliability
• Quality
– Low incremental CapEx
Predictions:
#1 Choice: CES Sync (Available now, but not "Layer 1," not forklift)
#2 Choice: Synchronous Ethernet ("Layer 1," but not available now, and forklift)
#3 Choice: IEEE 1588v2 ("Layer 2, and not available now, and forklift)
Wildcard: Cheap GPS!
12
Carrier Ethernet Convergence Is Here
HD TV
TVoD, VoD
Video
Source
Gaming
Business
Backup, ERP
Voice/Video
Telephony Voice
gateway
Video
Source
E-Line, E-LAN,
and TDM services
Business
Broadband
Mobile
3G
Broadband
mobile data/video



Carrier
Ethernet
Internet
Residential
Triple-Play
FTTx and
DSLAM Backhaul
Traffic Engineering & QoS of ATM
Resiliency & Manageability of SONET/SDH
Simplicity & Economics of Ethernet
13
Broadband Services Applications
Business
Mobile
Residential
• Enriched Services
• Wireless Backhaul
• Triple Play with IPTV
• Gigabit connectivity
between businesses
• Wi-Fi Access delivery
• 100’s of TV channels
• WiMAX infrastructure
• Video on demand
• 3G and beyond wireless
• Video
recording/playback
• Data Center
Consolidation
• Storage and disaster
recovery
• Next gen data services
• Interactive video apps
• High resolution photo
• Guaranteed rate multimegabit Internet access
• Video conferencing &
broadcast
• Wireless video
• Multi-megabit Internet
access
• Gaming
• Remote learning
• Digital TV
• Gaming
• Business telephony
14
Enterprise Services
Inter-LAN, Inter-PABX and SAN
VPLS or VPLS-TE Service
Customer
site
High Speed Internet Access
Customer
site
Customer
site
Customer
site
Customer
site
Carrier Ethernet
VPLS Group
Carrier Ethernet
Carrier Ethernet
www
Customer
site
Customer
site
Customer
site
High Speed Access to IP-VPN
Multi-Service Access
Customer
site
Customer
site
Customer
site
Customer
site
Customer
site
IP VPN
Carrier Ethernet
Carrier Ethernet
IP VPN
www
Network
Customer
site
Customer
site
ASP, or
Extranet
15
Triple-Play Services
Access
Concentrator
MPLS/Ethernet
Aggregation
Network
BB-SR
Regional
Network
ISP
ASP
RGW
•
•
Delivering triple play services over variety of access
concentrators (DSLAM, OLT, Base stations) enables the operator
to offer extensive and competitive Triple-Play services
The Carrier-Ethernet aggregation network is a key factor to enable
co-existence of new and legacy access network do deliver new
and advanced services
16
End-to-End Carrier Ethernet Solution
BTS
Carrier Ethernet
with Traditional Ethernet Economics
17
Delivering Commercial Voice, Video and Data
Services over Packet Switched Networks
Metro /
Campus
FE/GbE
PSTN
Circuit Emulation with or
without compression
T1/E1,
CT3/OC3
STM-1
TDM Network
(Class 5 Switch,
PBX, SONET…)
V.35/T1/E1/T3/E3
PBX
PSN w/
Abundant
B/W
Circuit Emulation
PBX
Metro / WAN
Cable/DSL
Satellite
Leased Lines
Frame Relay
Internet
PSN w/
Limited
B/W
Circuit Emulation
with compression

Voice, Data & Video Pseudowire services over Metro & WAN

Circuit Emulation requires at least 1.7Mbps of bandwidth per T1

Compression ( with VAD, BOD, LBRC, HDLC flag & SS7 FISU/LISU suppression) reduces
bandwidth consumption to under 100Kbps per T1
18
Connecting TDM-Based PBX’s
Over FE/GBE or IP WAN
Headquarters
PBX
Circuit Emulation
for Campus or
Metro Ethernet
(School districts,
airports, etc.)
FE/GbE
School
PSTN
Circuit Emulation with
or without compression
IP WAN
Circuit Emulation with
Compression for IP WANs
and low Bandwidth
Access networks
Remote Branch
PBX
PBX
Circuit
Emulation
T1/E1, Frame Relay
Satellite, Wireless
xDSL, Cable, PLC
T1/E1
Circuit Emulation
with compression
 Connect PBXs transparently over any packet switched network
 Circuit Emulation is simple solution for campus/metro Ethernet
 Add compression and echo cancellation for voice quality over IP WANs and low bandwidth
networks (e.g. cable, DSL, Satellite and Internet)
19
Cellular Backhaul via Pseudowires
FT1/T1/n*T1
Switch
Site
FT1/T1/n*T1
Cell Site
T1/E1,
CT3/OC3
STM-1
Circuit
Emulation
Cell Site
Fiber
FE/GbE
Circuit emulation
and cross-connect
FT1/T1/n*T1
Carrier
Ethernet
•
T1/E1 leased lines account for 40%-60% of
mobile operators expenses
•
Reduces 2G access costs and positions the
mobile operator for future 3G network
expansion
•
Latency starts at under 3ms
•
Clock complies with G.823/824 jitter and
wander requirements
Fixed
Wireless
Headend
Cable HFC
Infrastructure
Circuit
Emulation
Cell Site
FT1/T1/n*T1
Circuit
Emulation
Cell Site
20
Pseudowires vs. VOIP
Complementing Technologies
VOIP
Circuit
Emulation
Advanced multimedia features


Any-to-any voice/video switching & hunt groups


Protects investment in legacy equipment during migration to IP


Supports structured/unstructured T1/E1 & T3/E3


Transparent to payload


Accurate clock synchronization over IP/Ethernet/MPLS


Supports async/sync protocols over PSN (including ATM, Frame
Relay, H.320 video, GSM, CDMA, encryption, etc.)
Minimum end-to-end latency (assuming G.711)


45ms
1ms
21
Private Line Services
•
•
Private Line (‘legacy’) service revenue still growing
Driving increased demand for circuit emulation
Total Private Line Revenue (US), 2005-2010 ($Millions) Insight Research Jan 2006
22
Circuit Emulation
Emulated Circuits
SAToP
• T1/E1/T3
• Clock & any data transport
CESoPSN
• NxDS0 with or without CAS
• Efficient fractional/aggregate NxDS0
CESoPSN
CEP
• Low order VC: VC-11/12/2/3
• High order VC: VC-3/4/4-4c/etc
• SDH ADM over packet
Multi-Service
E1/T1
SAToP
NxDS0
4x E1/T1
4x E1/T1
SONET/SDH
VC-4
STM-1/OC-3
STS-1
Carrier Ethernet
CEP
23
Typical CES Topology
Core
Metro
Access
CPE
Class 5
Switch
TDM
Backhaul
SONET/SDH
PSN
Class 5
Switch
Ethernet
nxT1/E1
T1/E1/T3/STM-1/OC-3
Ethernet
Carrier Ethernet
Backhaul
nxT1/E1
24
World of Standards
CIRCUIT EMULATION
Standards Body
Network
CES Standard
Notes & Standards Names
IETF
IP
SAToP; CESoPSN;
CEP
PWE3
ITU
General
SAToP; CESoPSN
Rec. Y.1413
Metro Ethernet Forum
Carrier Ethernet
SAToP; CESoPSN
MEF-3; MEF-8
MPLS Forum
MPLS
SAToP; CESoPSN
MFA 8.0.0
CableLabs
DOCSIS
BSoD
SYNCHRONIZATION OVER PACKET
Standards Body
Standard
Notes & Standards Names
IEEE
IEEE 1588 v2
Sync over Packet
ITU
G.8261
SG15
25
Ethernet Co-exists with other Services
MPLS
Hybrid L2 and
L3 Ethernet
VPNs
ATM Service
Inter-working
Carrier
Ethernet
FR Service
Inter-working
TDM over
Ethernet
26
Accelerating Worldwide Adoption of
Carrier-class Ethernet Networks and Services