Optical Access for Business Services
Choosing the Right Technology
Market Trends in Business Services
Business Fiber Trend
% of Commercial Buildings with 20+ Employees
Fiber penetration has doubled in
last 5 years to U.S. Commercial
Buildings with 20+ employees
VSG 2010
• Carriers have developed a “think fiber first” mindset
– Service quality/reliability
– Growth potential/scalability
• Investment is accelerating in fiber access
– Fiber penetration has more than doubled in last 5 years
– Solutions must be fiber-ready
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Drivers for Optical Access
 Smart Phones, Video, new apps are stressing backhaul infrastructure
 Fiber access offers improved scalability and reliability
 Fiber plant constraints addressed with WDM or PON
 Pseudowire emerging as legitimate TDM transition option
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Key Attributes for Optical Access
 Low Cost, Highly Scalable Bandwidth
– Ethernet, TDM
 Time to Market for Service Ubiquity
– Ethernet, TDM, Copper
 Service Convergence
– Path to all-packet architecture
 SLA Management
– CoS support e.g. Real-time vs. Best-Effort
 Resiliency
– 99.99+% service availability
 Hardened solutions for outside plant deployment
– Robust operating range, metallic interface protection
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SONET / SDH
Point-to-Point
Ring
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Notes:
• Dedicated bandwidth per service
interface
• Deterministic transport performance
• ‘Single’ Class of Service - guaranteed
• Very mature OA&M capabilities
• Ideally suited for TDM transport
• DS1/E1  VT1.5/ VC-2
• DS3/E3  STS-1/ VC-3/4
• Adapted for packet based transport
• 10/100 Mbps  GFP  VT/VC
• GE/ 10GE  GFP  STS/VT/VC
• Modular, ‘carrier grade’ architecture
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Ethernet over Fiber
Point-to-Point
Ring
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Notes:
• Possibility for shared bandwidth per
service interface or trunk
• Engineered transport performance
• Multiple Classes of Service
• Emerging OA&M capabilities
• Ideally suited for packet based
transport
• Adapted for TDM based transport
• DS1/E1  PWE3/CES
• DS3/E3  PWE3/CES
• Modular architecture
• Emerging ‘carrier grade’ architecture
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GPON
Point-to-Multipoint
Notes:
• Shared bandwidth per service
interface
• Engineered transport performance
• Multiple Classes of Service
• Emerging OA&M capabilities
• Ideally suited for low bandwidth, best
effort packet based transport
• Adapted for TDM based transport
• DS1/E1  PWE3/ CES
• DS3/E3  PWE3/ CES
• Typically fixed access architecture
• Emerging ‘carrier grade’ architecture
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Technology Comparison
Technology
SONET/ SDH
Ethernet
over Fiber
GPON
Availability
• Ability for network to survive failures
Highest
High
Medium
Reliability
• Ability to detect and react to local faults
Highest
High
Medium
Packet Efficiency
• How efficiently Ethernet is carried
Medium
Highest
Highest
TDM Efficiency
• How efficiently DS1/E1, DS3/E3 is carried
Highest
Medium*
Medium*
Performance
• Tools to monitor error rates
• Capabilities in testing/ reporting
High
Medium**
Medium**
Cost per bit
• Overall cost to transport service
High
Medium
Low
* Pseudowire solutions available for DS1/E1
** Ethernet OAM standards are maturing
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Higher
Lower
Cost per bit
Technology Tradeoffs for Today’s
Solutions
SONET/ SDH
Ethernet over Fiber
GPON
Lower
Higher
Performance
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OPTI 6100 Family of Systems
 Network interfaces (OMM)
LMX chassis
24 Line Card
Slots
Rack mount
336 DS1, 48 DS3,
OC-3, OC-12
Ethernet
OC-48
– OC-3
– TM, UPSR, 1310 nm IR and LR, w, w/o XC, ADM, 1550 LR
– OC-12
– TM, UPSR, 1310 nm IR and LR, w, w/o XC, ADM, 1550 LR
– OC-48
– Linear, UPSR
– SFP based
 Low-speed (tributary) interfaces
MX chassis
12 Line Card Slots
Wall or Rack mount
84 DS1, 12 DS3,
Ethernet
OC-3, OC-12, OC-48
SMX chassis
–
–
–
–
–
–
–
DS1 (28 ports, M13, or VT1.5 mapped)
DS3 (3 port)
OC-3 (1 port, 2 fiber, SFP)
OC-12 (1 port, SFP)
Ethernet (10/100) (3 ports)(8 ports w, w/o tagging)
Transmux (1 port and 3 port)
GigE (copper, SM, MM, SFP)
4 Line Card Slots
Wall or rack mount
28 DS1, 6 DS3,
Ethernet
OC-3, OC-12, OC-48
Tilt-down Wall Enclosures for MX and
SMX application
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Advanced Ethernet Modules
vs.
VLAN1
Individual VLANs in
shared VCAT Group
Individual VCAT
Groups
Shared
VCG
Customers
VLAN1
OPTI-6100
Customers
GigE or
10/100
Router
HO/LO
VCAT
OPTI-6100
VLAN1
OPTI-6100
VLAN2
VLAN trunk
OC-12/48 SONET Ring
VLAN3
GigE
Applications
• EVPL service with VLAN separation of
customer traffic
• ELAN service with VLAN separation of
customer traffic
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Ethernet over Fiber Components
TA5000 8-port Gigabit Ethernet Access Module
– 8 GigE SFP cages
– Link Aggregation
– Link OAM
NetVanta 8044M
–
–
–
–
–
–
4 -10/100/1000BaseT WAN or LAN
4 - GigE SFP WAN or LAN
2 - Expansion Slots
1 and 2.5G ERPS Ring support with optical bypass option.
Clock Sync over Packet Ready e.g. G.8261/62 SyncE
Dual fed DC options (+/-24V, -48V DC)
Carrier Ethernet
– MEF 9, 14, 18
– Eth OAM CFM and PM
– TACASC+ and RADIUS Authentication, Authorization
8-port GigE
Access Module
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NetVanta 8044M Modular NTE
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Leverage Fiber Assets with CWDM
DS1
TA5000 MSAP
2xGE or
2x10GE
Central Office/
Exchange
TA5000 MSAP
Carrier
Ethernet
Network
8 port
EoFiber
AM
NetVanta 8044M
8 port PW Service Module
CWDM
GigE
NV8044M
Modular NTE
NV8044M
Modular NTE
8xDS1 & Clock Sync
10/100/1000
Cell
Site
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8xDS1 & Clock Sync
10/100/1000
Cell
Site
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Total Access GPON Solution
 Total Access 5000 OLT
– GPON 2-Port Optical Line Terminal
– 21 OLTs/42 PONs per Total Access
5000
 1,344 SUBs
Total Access 5000
– 2.488 Gbps downstream,1.244 Gbps
upstream
– Completely GEM based
 Voice support via SIP
 GPON Optical Network Terminals
– SFU—Support for triple-play delivery
 2 POTS, 1 Ethernet port
 2 POTS, 2 Ethernet ports
 Voice, HS data, IPTV
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TA35X
GPON OLT
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Total Access 372 SBU
Total Access 372
–SBU ONT
– 8 POTS, 2 Ethernet, 4 DS1
 Loop and Ground start
 10/100/1000Bt Ethernet
– TLS Support
– MEF Compliant (future)
 DS1 PWE
– GR950 Compliant Enclosure
– GPON and Active Versions
 372 - SC APC GPON
 372E - SFP Active Ethernet
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Conclusions
 Fiber the preferred access media for business services
 Choices available, each with its own set of strengths and
weaknesses
– SONET/ SDH
 The most mature
 Ideally suited to TDM services
 Comparatively expensive
– Ethernet over Fiber
 Suitable for packet based services over a wide range of speeds
 Moderate cost
 Excellent scalability
– GPON
 Ideally suited to services up to 100Mbps
 Can be engineered for business services
 Lowest cost
 Choice of technology is dependant upon service needs and
cost objectives
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