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Save Space, Energy and Costswith the New Standard in Enterprise LANs
Decrease floor space usage by up to 90%
Cut power consumption by up to 80%
Reduce costs by up to 70%
Passive Optical Networks
Transforming the Enterprise NetworkYour organization didn’t get to where it is today by being satisfied with
the status quo — by doing things the way they’ve always been done,
just because they’ve always been done that way.
So why should your enterprise network be any different?
For roughly the past two decades, most enterprise local area networks
(LANs) have been built on an active Ethernet platform with multiple tiers
of network switches and copper cabling. This platform has worked
relatively well. Otherwise, it wouldn’t have become the standard.
Why fix something that isn’t broken?
Because of what you stand to gain by implementing a passive
optical network.
Enable Transformative Technologies
Many enterprise networks are already facing a bandwidth crisis due to the inability of existing
switch hardware and cabling infrastructure to meet ever-increasing demand for:
Internet-based applications
Video and video conferencing
Voice over IP (VoIP)
Cloud-based computing
Wireless access for a growing host of mobile devices
Boosting performance in a legacy active Ethernet LAN means
replacing expensive network switches every five to seven years and
perhaps their interconnecting cabling as well. It can also mean upgrading
the entire existing cabling infrastructure all the way to the desktop level to the
latest category of copper cabling and connecting hardware — another costly and
disruptive undertaking, which you can look forward to repeating every five to 10 years.
Break the cycle of cable upgrades and prepare your network for new technologies
with a cost-effective passive optical network.
Corporate Servers
AAASecurity
Call Manager
WAN
Edge Router
Aggregation Switches
Distribution Switches
Building Aggregation
SwitchesWorkgroup Switches
Copper Cables
End-User Devices
Campus Aggregation
Remote Building
Legacy Active Ethernet LAN
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Optical LAN Solution
Lower CapEx, OpEx and TCO
The capital expenses involved in installing a new
passive optical LAN are substantially lower than
installing the same size new active Ethernet
LAN. When combined with the lower operating
expenses associated with a passive optical LAN,
you can expect a total cost savings of up to 70%.
The total cost of ownership (TCO) benefit is
realized the first year with positive impact to your
bottom line every year after. Not only will you
break the cycle of upgrading network hardware
and cabling to achieve performance increases
every five to seven years, but as your network
grows, the passive optical network offers
economical scalability, supporting up to 8,000
users with one OLT.
Even if you choose to install a new optical
network OLT and fiber to the telecommunications
closet, but use existing copper cabling from the
closet to the desktop, you can still realize capital
and operating expense savings of up to 50%.
OLT
Passive Fiber Distribution Hub
Corporate Servers
AAASecurity
Call Manager
WAN
Edge Router
Aggregation Switches
Campus Aggregation
Remote Building
End-User Devices
What Is a Passive Optical Network?
A passive optical network (PON) is a point-to-multipoint network that
provides converged data, voice and video at gigabit speeds over a single
strand of singlemode fiber to Ethernet-equipped devices at the desktop.
A single optical line terminal (OLT) can act as the central aggregation point
for networks of up to 8,000 users connected via singlemode fiber, passive
optical splitters and optical network terminals (ONTs) at the user level.
The OLT operates like a standard Ethernet switch, but with an aggregation
capacity far exceeding that of a typical chassis-based Ethernet switch.
A PON can extend over multi-building, campus-type LAN distances up
to 20km (12.4 miles) without the need for signal regeneration.
PON may be a relatively new concept in the enterprise network, but it’s
the same technology that’s in place and already taken for granted by tens
of millions of residential consumers of combined TV, Internet and phone
services delivered over fiber by telecommunication service providers.
Decrease floor space usage by up to 90%
Cut power consumption by up to 80%
Reduce costs by up to 70%
The Reliable, Versatile, Scalable and Economical Alternative
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Save Energy and Meet Green Initiatives
A typical legacy active Ethernet LAN with 2,000 users consumes
approximately 10 watts of power per user, while a passive optical
LAN with the same number of users consumes only 2 watts per
user — an 80% savings in power consumption.
This is because the passive optical LAN uses fewer electronics, so
it consumes less energy in the first place, and also generates less
heat that would, in turn, require more HVAC and power to cool.
Lowering energy consumption not only saves money — up to
$72,000 per year in the above example — but can also help you
meet Green initiatives and qualify for building LEED® certification. vs.
A passive optical LAN occupies 90% less rack space than an active Ethernet LAN, and its passive equipment also consumes 80% less power.
PON vs. Active Ethernet LAN
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Who Should Consider a Passive Optical Network?
Generally speaking, passive optical networks offer
clear-cut benefits for any enterprise LAN of 500 or
more users, whether on multiple floors in a single
building or spread out over a campus.
If you have 200–500 users in your LAN, you
should still consider PON technology —
especially if you’re already looking at the need
for a cabling infrastructure upgrade.
At 200 users, a side-by-side cost comparison
for an active Ethernet LAN versus an optical LAN
shows that CapEx is roughly equal, but the PON
solution yields savings in OpEx, even during the
first year of ownership. That’s in addition to PON’s
other advantages, including higher reliability,
flexibility and scalability, as well as cabling
infrastructure designed to last 30 years.
Reclaim Your Real Estate and Your IT Staff
By replacing the legacy Ethernet LAN’s layers of active switches — and the
associated cabling and connecting hardware — with passive optical splitters,
PON technology occupies 90% less floor space in your facility.
Active Ethernet LAN (2,000 users)
Optical LAN (7,000 users)
Typical Rack Units Required 90 9
Typical Racks Required 18 1
Imagine what else you could do with the floor space that’s currently being
occupied by communications closets filled with racks of equipment. Why not
put that real estate to use for a purpose that advances your organization’s
goals and helps your bottom line?
In addition to requiring far less space, a passive optical LAN requires far less
IT support for patches, upgrades, manufacturer service contracts and
troubleshooting than a legacy active Ethernet LAN. This is because the optical
LAN’s equipment is far less complex and its cabling infrastructure has an
expected lifespan of at least 30 years instead of only 5–10.
Breaking the cycle of network migration and labor-intensive support means
you can shift your IT staff’s focus to what matters most to your organization,
such as supporting revenue-generating applications.
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Passive Optical LANs — High Performance for New or Existing Networks
Optical Splitters range in size from 1x4 to 2x64 and passively divide the signal from the OLT to each network port.
Optical Splitters may be used to support a zone or workgroup deployment.
ONT’s support 2-8 end-user connections to the network. ONT’s are available in desktop, wall and cubicle mounted varieties.
OLT aggregates all LAN data traffic in the main distribution center and provides connection to the wide area network.
Singlemode Fiber — Passive Optical Networks utilize singlemode fiber, supporting cable runs of up to 20 Km.
ONT’s connect IP enabled devices to the network, such as IP cameras and access points.
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Solutions
A passive optical LAN with fiber to the desk, shown in the building on the left, offers
significant savings in CapEx and OpEx over a traditional, Ethernet LAN. But even when you’re
connecting an existing copper cabling infrastructure to a passive optical LAN, as shown in the building on
the right, you can still gain CapEx and OpEx savings of up to 50%. Due to its flexibility, scalability and support for
long distances, PON is particularly well suited for networks that span large campuses or multiple floors in a single building.
Existing Ethernet Cabling Infrastructure
Ethernet Ports
PoE Enabled ONT’s
leverage existing Ethernet cabling infrastructure as part of the PON architecture.
What Types of Organizations Are Using PON?
6
Early adopters of passive optical LANs over the past 10 years have included:
Government agencies, because of PON’s capacity to support enhanced
security and reduced energy consumption mandates
Educational institutions, to economically interconnect an entire campus
or school district spread over distances up to 20km
The healthcare industry, which typically requires high bandwidth for digital
imaging and for whom opening up walls and ceilings to upgrade
cabling every five to 10 years can create hygiene issues
Commercial enterprises have taken notice of the benefits
realized by healthcare, government and educational
institutions. The combination of these benefits, plus
the advantages of PON in cost, energy and space, have
driven an increase in demand for PON in the enterprise
over the past five years.
7
Passive Optical Networking FAQs
Does PON provide similar or better security compared to traditional Ethernet switch networks?
Yes. PON has better security since it implements security
architecture similarly to Layer 2 Ethernet switch solutions, plus
additional security mechanisms by means of an all-fiber network
and the PON protocol layer.
Does PON architecture deliver the same bandwidth to end-users and end-devices?
Yes. When compared to traditional Ethernet switches, PON provides
equivalent bandwidth at the network uplink interface, across transmission
equipment switch fabric and at service module interfaces.
Will on-site technical staff need to receive special training before deploying an optical LAN?
No. The Ethernet end-points do not change, and neither do the IP/
Ethernet services being delivered. The training required to support the
fiber plant within an active Ethernet LAN is the same training required
to support the fiber cable plant within a PON network.
How reliable is PON compared to traditional Ethernet switch technology?
PON equipment meets strict 99.999% availability standards, while
traditional Ethernet switching manufacturers advertise a 99.961%
availability (more than 3 hours of network downtime annually).
Does PON support PoE?
Yes. PON ONTs are available with Power over Ethernet (PoE), both
in low-power IEEE 802.3af and high-power IEEE 802.3at standard
configurations on all ports of the ONTs. The PON solution provides for
a centralized DC power system to manage the PoE power and UPS/
backup power for these devices. A desktop solution is also available
as determined by user requirements. Additionally, ONTs can include
POTS ports, providing a SIP connection to the network to allow use
of existing analog telephone handsets.
Is PON a future-proof technology?
Yes. A PON optical distribution network using singlemode fiber is the
closest future-proof LAN infrastructure possible today. Compared to
CATx cabling limitations, singlemode fiber offers superiority in bandwidth
capacity, distance, pliability, connector reliability and weight. Finally, PON
offers the most graceful future migration to 10GbE and DWDM (dense
wave division multiplexing) technologies.
More Questions on Passive Optical Networks?
The shift from active Ethernet to a passive
optical LAN isn’t a snap decision, of course.
To discuss your questions and your network’s
unique requirements, contact WESCO CSC’s
Sales Engineers today.
Call: 877.462.7279
WESCO CSC End-to-End PON Solutions and
Technology Support
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WESCO CSC provides complete, customized solutions to help you
implement a passive optical LAN. We support all related technologies
and infrastructure, including:
Optical LANs
Distributed Antenna Systems (DAS) for Wireless Access
Secure Passive Optical Networks (SPON)
Outside Plant for Campus Networks
Complete Sales Support
WESCO CSC Sales Engineers, in combination with our network
of certified integrators and industry-leading manufacturers, offer
complete specification and design support for your networking, data
communications and security needs.
Around the World or Across the Street, We Keep Your Business Running
WESCO is much more than a data communications, security and
electrical distributor. We are a full-service, global supply chain company
providing you with leading products, services and solutions to meet your
MRO, OEM and capital project requirements.
A majority of Fortune 500 companies use WESCO as their “one-stop
shop.” The breadth and depth of our capabilities, geographic footprint
and supply base enable us to meet your needs and provide continuity
to your operations.
As part of WESCO, Communications Supply Corporation (CSC) is the
world’s fastest-growing global distributor of data communications and
security solutions. WESCO CSC has expertise in the latest technologies
from all industry-leading manufacturers and can provide you with
unmatched extra effort and value-added solutions.
Upgrade Your Business with Value Creation
WESCO can help your business maximize productivity
while saving money. Our extensive line of WESCO Value
Creation Solutions can streamline operations in a variety
of areas by providing energy, project management,
working capital and procurement solutions.
Providing Value Creation Solutions for:
Communications
eBusiness
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Engineering Services
Production Support
Safety
Security
Supply Chain Optimization
Training
Working Capital
WESCO Distribution, Inc.
225 West Station Square Drive, Suite 700
Pittsburgh, PA 15219
Phone: 412.454.2200
www.wesco.com
© 2013 Communications Supply Corporation l 47036298911/ 51962
Communications Supply Corporation
200 East Lies Road
Carol Stream, IL 60188
Phone: 877.462.7279
www.gocsc.com