0102 2001 Level 3 Communications, Inc. All Rights Reserved. 1 Network Overview Copyright Level 3 Communications, Inc. 2002. This work is the intellectual property of the author. Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author.
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0102
2001 Level 3 Communications, Inc. All Rights Reserved. 1
Network Overview
Copyright Level 3 Communications, Inc. 2002. This work is the intellectual property of the author. Permission is granted for this material to be shared for non-commercial,
educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To
disseminate otherwise or to republish requires written permission from the author.
0102
2001 Level 3 Communications, Inc. All Rights Reserved. 2
Level 3’s ExperienceOver the last three years, Level 3’s engineering team recently oversaw the design and physical construction of a $10 billion global network from whiteboard to completion. This project was one of the largest construction projects in history when measured by dollars spent per month
In addition to physical construction, Level 3 built a global operational organization numbering 4,500 people in eleven different countries
Level 3’s management team has extensive network construction experience through MFS and Kiewit
Level 3 built a Tier 1 IP backbone in less than 3 years
Level 3 was the first to deploy an MPLS backbone
Level 3 operates the largest SoftSwitch based network in the world. SoftSwitch based service include voice over IP (with PSTN quality) and managed modem services
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2001 Level 3 Communications, Inc. All Rights Reserved. 3
ONTAPSM - World Class Provisioning Process
ONTAPSM = On-Net Transport Activation Process
Capacity verification at order entry
Acceleration of customer’s revenue recognition
Clear commitment at the time of the order
Reduced exposure to forecasting risk
Vendor-neutral architecture
“We are big believers in ONTAP. Level 3 was able to turn up a national private-line backbone for Masergy in less than 10 business days. Such rapid provisioning has enabled Masergy to directly tie capital outlays to solid forecasts of demand and to offer better service to our own customers.”
– Gerald Poe, Sr. Mgr. Infrastructure Engineering and Provisioning
Masergy
Winner of the 2002 Frost & Sullivan Customer Service Innovation Market
Engineering Award.
ONTAPSM
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2001 Level 3 Communications, Inc. All Rights Reserved. 4
ONTAP Process
Order to Delivery Process
Industry: 10 Days ONTAP : 0.5 Days
Process Changes:• Provisioning/billing
info validated before sign off
• Reservation capabilities
• Credit approval prior to signoff
Complete Service Request
Industry: 60 Days ONTAP : 1.0 Days
Process Changes:• Handoffs between organizations
eliminated
• Real-time consumption management provided
• Remote activation of logical network elements
Design, Assign, and Activate
Industry: 40 Days ONTAP : 3.5 Days
Process Changes:• Handoffs with Field
Management eliminated
• Billing is automatically activated
Test and Turn Up
Customer Lead
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2001 Level 3 Communications, Inc. All Rights Reserved. 5
Industry Leading Provisioning Time
Cycle Time Performance
Customer Sign Date to Bill Start Date
Leading industry cycle times for OC-3 and above services, < 20 days for On-Net services
Migration to Level 3 network enabled > 50% cycle time reduction in 2001
Cycle Time
Service Activation
45
35 33 3026 23
16 1520 23
1511 13
0
10
20
30
40
50
60
70
80
Mar-01 Apr-01 May-01
Jun-01 Jul-01 Aug-01
Sep-01
Oct-01 Nov-01 Dec-01 Jan-02 Feb-02 Mar-02
Da
ys
Cycle Time
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2001 Level 3 Communications, Inc. All Rights Reserved. 6
Meeting Customer Commitments
Customer Commitment Dates
Currently meeting 99% of Customer Commitment Dates (CCD)
CCD performance reflects change in focus from construction to operation
% CCD Met
Service Activation
81%84%
87%
92%
97% 96% 98%93%
97%95%
98% 99%
50%
60%
70%
80%
90%
100%
Apr-01 May-01 Jun-01 Jul-01 Aug-01 Sep-01 Oct-01 Nov-01 Dec-01 Jan-02 Feb-02 Mar-02
% CCD Met
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2001 Level 3 Communications, Inc. All Rights Reserved. 7
Operational Excellence
PERFORMANCE
RELIABILITY
• Industry leader for core round-trip latency across the Network for IP services
• Network availability guaranteed at 99.99% for terrestrial On-Net services
• Online visibility to network statistics, utilization, and traffic flow through the Online Customer Service Center (OCSC)
• Consistently meet our guarantee of less than 1% packet loss performance for IP services
Level 3 is committed to excellent operational performance to enhance our customers’ experience and satisfaction
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2001 Level 3 Communications, Inc. All Rights Reserved. 8
Level 3 North America Network 16,000 U.S. route miles
Upgradeable 12 conduit system
Private Line Service available in 56 cities nationwide
Substantially completed
Fully owned, homogeneous
No spurs or laterals
6.5 Million square feet of colocation facilities
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2001 Level 3 Communications, Inc. All Rights Reserved. 9
Level 3 European Network
Cable completed in 4Q00
Initially operates 320 gigabits per second
Upgradeable to 1.28 terabits per second
Connects Level 3’s US and European networks
Diverse capacity available
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2001 Level 3 Communications, Inc. All Rights Reserved. 10
The Level 3 Conduit Advantage
At some point it is more cost effective to light additional fibers.At some point it is more cost effective to use next generation fiber.
Level 3 conduits support both options.
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2001 Level 3 Communications, Inc. All Rights Reserved. 11
Lowering the Cost of Transport
Source: Corning, Inc., Nortel Networks, Inc., Level 3 Engineering
1.00
10.00
100.00
1,000.00
10,000.00
1990 1995 2000 2005 2010
Unit Cost$ per Gbps
mile
SMF
N2DSF
LEAF
Gen 4
Gen 5
Gen 6
Gen 7
Gen 8
Gen 9
0.50
0.01
Level 3 Cost Curve
Level 3 built its Network to be upgradeable, leveraging new generations of fiber and optronics in 12 parallel conduits
Newest generations purchased in large scale = best unit cost
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2001 Level 3 Communications, Inc. All Rights Reserved. 12
NetworkSpurs
Non-Diverse City Laterals/
Collapsed Rings
The Level 3 Network Is Completely Route Diverse
It is important to be sure that the topology map a provider shows you is a true representation of their network.
Richmond
POP
Richmond
POP
The Level 3 network does not have any spurs or laterals – it is completely route-diverse.
Sometimes carriers want you to see this.
In reality, this isoften what the network truly looks like.
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2001 Level 3 Communications, Inc. All Rights Reserved. 13
Metro Networks
Broad geographic coverage• 27 major North American
markets
• 9 major European markets
Deep metro presence at duct level• 2,150 total local route miles
• 500+ On-Net buildings
• Up to 864 fibers per cable, per conduit
Industry-leading Colocation facilities• 70 Global “Carrier Grade”
Colocation Data centers• 6 million square feet of
colocation space
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2001 Level 3 Communications, Inc. All Rights Reserved. 14
Metro POP Route Diversity
Non DiverseEntrance Facilities
Carrier service
Provision/gateway facility
As in the case of intercity networks somecarriers lead you to believe that they havecomplete diversity.
Non DiverseRisers in Gateways
What carrierswant you to see
What you shouldbeware of
Level 3 has complete diversity in our metro networks and facilities.
On-Net building/
Customer location
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2001 Level 3 Communications, Inc. All Rights Reserved. 15
The Level 3 IP Network
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2001 Level 3 Communications, Inc. All Rights Reserved. 16
IP Logical Diagram
Peering(public
Internet)
Peering(public
Internet)
Core MPLS Network
Core MPLS Network
Level (3)InternetNetwork
Level (3)InternetNetwork
VoiceNetwork
VoiceNetwork
Level(3) Gateway
Crossroads(Collocation)
DIA(Metro TDM)
EPOP(Metro Ethernet)
Management/OSS
Network
Management/OSS
Network
Internet
Internet
VoiceVoice
MOSSMOSS
Internet
Internet
VoiceVoice
MOSSMOSS
Internet
Internet
VoiceVoice
MOSSMOSS
Managed Modem
Voice Quality VPN
Over MPLS tunnels
Management VPNOver MPLS tunnels
Internet VPN
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2001 Level 3 Communications, Inc. All Rights Reserved. 17
Industry-Leading Performance
Uniform Global Network • Designed and built for performance from the ground up
MPLS-enabled backbone• Carries multiple protocol traffic• Improves routing and QoS
Peering• > 600 peering sessions, 51+ Gb of Connectivity in North America• 95% Private peering
Consistently Ranked in Top 3 by Keynote Systems
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2001 Level 3 Communications, Inc. All Rights Reserved. 18
(3) Packet Ethernet, Frame Relay and ATM over MPLS
Ethernet Switch
ATM Switch
Router RunningFrame Relay
Ethernet Switch
ATM Switch
Router RunningFrame Relay
VLAN
VC
DLCI
VC
DLCI
VLAN
Level 3 MPLSBackbone (LSR)
Virtual Circuit A
Virtual Circuit B
Virtual Circuit C
ATM Switch
LER
LER
LER
LER – Labeled Switched Router
LSR – Labeled Switched Router
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2001 Level 3 Communications, Inc. All Rights Reserved. 19
North America Peering Interconnection
Peering Capacity:51+ Gb/s active
2.0 Gb/s
7.1 Gb/s
6.4 Gb/s
6.4 Gb/s
932 Mb/s
7.8 Gb/s
11.6 Gb/s
6.2 Gb/s
3.7 Gb/s
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2001 Level 3 Communications, Inc. All Rights Reserved. 20
Level 3’s Academic and Research Community Focus
Dedicated team of sales, marketing, business development and engineering resources
Efforts focused on national network initiatives, consortia and traffic aggregators, not on individual institutions
Specific product programs for academic and research community
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