Connection-oriented Ethernet (COE)Full Service Mobile Backhaul COE uniquely addresses emerging 3G/4G...
Transcript of Connection-oriented Ethernet (COE)Full Service Mobile Backhaul COE uniquely addresses emerging 3G/4G...
Connection-oriented
Ethernet (COE)
Combining the Reliability, Performance, and Security of
SONET with the Flexibility and Efficiency of Ethernet
Topics
Just what is connection-oriented Ethernet (COE) anyway?
Fundamental attributes
Key technologies
Basic value proposition
The value of integrating COE with optical networking
Packet Optical Networking
How is COE creating business opportunities in metro
networks?
Mobile backhaul
DSLAM backhaul
Wholesale and retail Ethernet services
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Connection-Oriented Ethernet:
Carrier Ethernet with Traffic Engineering
Explicit forwarding of
Ethernet connections &
tunnels
Forward on tags
vs. connectionless MAC
address learning and
flooding
vs. Layer 1 forwarding
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EVC1
EVC2
EVC3
• Scheduler sees each EVC
• Deterministic performance
Connection-oriented
Ethernet
Per flow queuing
Shared
priority queue
EVC1EVC2EVC3
• Scheduler sees the Queue
• Statistical performance
?
Traditional
Ethernet “switching”
Priority queuing
Explicit data path
Connection-oriented
Ethernet
“magic”
Plug n’ play
Traditional
Ethernet “switching”
Resource reservation and admission control
For each CoS instance, EVC, tunnel
Per-flow queuing / traffic engineering
vs. simple priority queuing
Attributes of Connection-oriented Ethernet
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Network Protection• G.8031 50ms EVC Protection
•802.3ad UNI & ENNI Protection
Ethernet OAM• 802.3ah Link Fault Management
•Y.1731 Service Fault Management
Scalability•Layer 2 Aggregation
•Statistical Multiplexing
•Tag Swapping/Reuse
Deterministic QoS• Lowest Delay, Delay Variation, Loss
• Bandwidth Resource Reservation
• Connection Admission Control
COE
Attributes
Standardized Services• MEF 6.1 EPL, EVPL Services
• MEF 10.2 Service Attributes
Security• Bridging disabled-MAC DoS attacks mitigated
• Completely Layer 2 - no IP vulnerabilities
Connection-oriented Ethernet: More than just a protocol…
The Best of Both Worlds
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Connectionless 802.1 Ethernet
Bridging
• No Aggregation /Stat Muxing
• Deterministic QoS
• Short (<50ms) protection times
• Security
• Good Aggregation / Stat Muxing
• Non-deterministic QoS
• Long (>200ms) protection times
Connection-Oriented
Ethernet• Ethernet aggregation and stat muxing
• Highest EVC quality
• 50ms protection speed
• Precision OAM
• Security
Packet
ONP
MSPP
Eth
MSPP
MSPP
Eth
Eth
Eth
Ethernet over SONET/WDM
Eth
Eth
Eth
SONET quality, security, availability – Ethernet flexibility and efficiency
Connection-Oriented Ethernet (COE)
NGN Metro Infrastructure and Ethernet Services
First general purpose Ethernet Infrastructure
A single investment for all applications
Deterministic foundation
Ethernet aggregation for efficiency
High-value Ethernet connectivity
and backhaul services
Key applications
Mobile Backhaul
Enterprise site to site services
Retail Ethernet access services
Wholesale interconnection services
DSLAM Backhaul
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EnterpriseMobility
Residence, MTU
Metro
E-LAN office
Video
MTSOVHO
Web
Service Edges
Enterprise
COE does for Ethernet
what SONET did for DS1/DS3
Mobility
Connection-Oriented
Ethernet Infrastructure
VoIPWebL2 VPN L3 VPN Web
IP services
PoP
End users
COE is the foundation of Metro NGN Networks / Services
Ethernet-Centric COE
Simplest COE for Metro
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Three Layers to manage
Ethernet, MPLS PW, MPLS LSP
Multiple OAM methods
Complex protection
One Layer to manage
Ethernet
Scalable through reusable tags
One OAM method (802.1ag/Y.1731)
One protection method (G.8031)
Management plane approach
Ethernet-centric COE results in simplest and lowest cost metro operations
MPLS-centric COE
Eth Eth
Ethernet-centric COE
S/C tag tunnel Eth MPLS LSPPW PW
Static PW T-MPLS MPLS-TP IP/MPLS
IP controlplane
Mgmt plane
Eth
Mgmt plane
Packet Optical Networking:
Integrating COE and Layer 1 Optical Networking
COE + complete layer 1 networking
SONET, PDH, OTN, Lambda, Ethernet
Provisioned connections vs. dynamic IP
control plane
Brownfield optical network is an
asset
~100,000 nodes can feed COE services
Builds the NGN network
More than a „transition‟ investment
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“Open Platform” implementation
Pluggable open /interworking environment
Vs. discrete functions that live under a specific technology “roof”
• Like packet on a blade in a ROADM
Widest range of application and flexibility in network evolution
COE and TDM
Switching
fabric
OTN/Wave
Transport
TDM
network
Ethernet
networks
Example Packet ONP
“Open-platform” Implementation
Joining the Existing Network and the Next Generation Network
MSPPMSPP
SONET +
COE
SONET SONET
NID
Eth
COE card
mPONPMSPP
COEPacket
ONP
COE
mPONP
Backhaul Provider Challenges
COE is required for 3G and 4G backhaul
Ethernet for economical bandwidth
Connection-oriented Ethernet for loss, latency, jitter
performance
• Performance is too stringent for connectionless Ethernet
T1 transport is required
¾ of cell sites have 2G, 3G, 4G mix
Leveraging existing assets
Many sites served by MSPP equipment now
T1 over SONET is tariffed and operationalized
Minimizing access costs
Serving multiple operators with a single solution
Keep backhaul simple and familiar
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Address Emerging Requirements – Deliver Existing Services – Leverage Existing Assets
Cell Sites by RAN
(Worldwide 2010-2012)
Multi-Ran - 73%
3G-only
11%
4G-only
3%
2G-only
13%
Cell Sites by RAN
(Worldwide 2010-2012)
Multi-Ran - 73%
3G-only
11%
4G-only
3%
2G-only
13%
< 5ms latency
< 1ms jitter
< 10-6 packet loss
802.1 bridged
networks
fall short
P-ONP
Connection-oriented
Ethernet networks
exceed
Mobile Operator Ethernet
Performance Requirements
Source: Infonetics. August 2009
Case Study:
Full Service Mobile Backhaul
COE uniquely addresses emerging 3G/4G Ethernet needs Connection performance with Ethernet
aggregation
SONET integration for existing T1 backhaul Native TDM backhaul for multi-provider,
multi-RAN sites
No new sync technology, no staff retraining, no new SLAs, no new troubleshooting
Maximizes use of existing assets Existing MSPPs with EoS
Add COE units to existing MSPP chassis –Micro Packet ONP
Packet ONP is a flexible anchor point to build out new fiber to greenfield sites
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Single architecture for emerging and existing services
2G
3G
2G3G
4G
COE over
SONET Ring
NID
Native Ethernet
MSPP
EoSONET
ring
2G
3G
4G
Mobile Office /
Aggregation office
COE Ring
Packet
ONP
3G4G
mPONP
mPONP
Case Study:
DSLAM Backhaul and Wholesale Access
Mix of DSLAM backhaul required
Legacy DSLAMs - ATM over DS3
• Requires SONET backhaul
New EoCu DSLAM deployments
• Requires Ethernet Backhaul
Packet Optical COE Infrastructure
Single network for all needs
High quality Connection-oriented
Ethernet backhaul connections
• Underpins all services
• Provides broad-scale aggregation vs. EoS
• Presents a standard ENNI to partners
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ATM DSLAM
Hub CO
ATM DSLAMEth DSLAM
Eth DSLAM
DS3 DS3
GEGE
WebWebIP VPNIP VPN
COE + SONET Ring
Evolve to new EoCu DSL services while cost effectively servicing existing subscribers
mPONP mPONP
Packet
ONP
PEPE
Ethernet
partner
ENNI
Wholesale and Retail Ethernet Services
Decouples Ethernet service from the underlying network technology One COE service – any access
One end user, one service, different access
Increases the addressable end-users Embedded networks / off-net can get COE services
Increases the service velocity No specialized overlay
Enables wholesale interconnection services
Delivers standard R-UNI and ENNI
Simplifies Ethernet access network Single elements at hub and access sites
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1
One Ethernet Service Description over any type of Access Network
ENNIHub CO
NIDMSPP
T1, T3
PDH
Access
Network
COE
SONET Ethernet
WebWebIP VPNIP VPN
Packet
ONP
mPONPEoPDH
Hub
Site
MSPPMSPP
MSPP
EoPDH
EoPDH
EoPDHMSPP
MSPPMSPP
EoPDH
EoPDH
EoPDH
Hub
SitePacket
ONP
VoIPVoIPWebWebIP VPNIP VPNVoIPVoIP
WebWebIP VPNIP VPN
PEPE
Ethernet
partner
Ethernet
Service
COE + Packet Optical for Next Generation Networks
COE = Carrier Ethernet + Traffic Engineering
SONET reliability, performance, security
Ethernet flexibility and efficiency
Packet Optical Networking integrates COE and Layer 1 optical
networking
Joins existing assets (networks, people, IT) with next generation
services
Increases velocity, addressable customers, lowers cost
Unique applications being deployed now
Full Service Mobile backhaul
DSLAM backhaul
Wholesale and retail Ethernet services
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