Wavelength Division Multiplexing WDM NASA

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Wavelength Division Multiplexing (WDM) NASA
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Agenda

• Overview of WDM
• Benefits of WDM
• Specifications given to vendors
• Vendor Solutions
• Cisco
• Nortel
• Zhone
• Ciena
• Ericsson / Marconi
• Adva

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Overview

• Wave Division Mutiplexing (WDM) multiplexes
  multiple optical carrier signals on a single
  optical fiber by using different wavelengths
  (colors) of laser light to carry different
  signals.
• Bit rate and protocol independent

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Overview
5
Overview

• Two main types of WDM
• Coarse Wavelength Division Multiplexing (CWDM)
• Dense Wavelength Division Multiplexing (DWDM)

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Overview

• Fiber Characteristics

C Band Range 1530nm 1560nm L Band Range
1570nm 1600nm
Water Peak
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OverviewWDM Components
l1
l1...n
l2
l3
Optical Multiplexer
l1
l1
l1...n
l2
l2
l3
l3
Optical De-multiplexer
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OverviewSub-Lambda Multiplexing

• Multiplexing a single low rate data connection
  onto a wavelength is very inefficient.
• For example, if a FastEthernet connection is
  transported on a WDM wavelength, only 4 of the
  bandwidth is used. This assumes the wavelength
  is capable of transporting 2.5 Gbps.
• To better utilize bandwidth many vendors support
  sub-lambda multiplexing.
• The cards that support this are often referred to
  as DataMux or Muxponder cards.
• Muxponder cards have multiple ports (FE, GE,
  etc.). These cards multiplex the data flows and
  transports them onto a wavelength.
• Some vendor use SONET framing to multiplex the
  data
• Others use proprietary protocols

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OverviewWDM Protection Schemes
11 Optical Multiplex Section (OMS)
11 Optical Channel Protection (OCh)
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OverviewWDM Protection Schemes
11 Optical Channel Protection (OCh)
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OverviewWDM Protection Schemes

• Optical Channel Dedicated Protection Ring
  (OCh-DPRing)

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OverviewWDM Protection Schemes

• Example of an Optical Ring with protection
  between UMD, GSFC and NOAA (Optical Channel
  Dedicated Protection Ring OCh-DPRing)

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OverviewWDM Protection Schemes
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OverviewWDM Protection Schemes
15
OverviewWDM Protection Schemes
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Benefits of WDM

• WDM technology allows multiple connections over
  one fiber thus reducing fiber plant requirement.
  
• This is mainly beneficial for long-haul
  applications.
• Campus applications require a cost benefit
  analysis.
• WDM technology can also provide fiber redundancy.
• WDM provides a managed fiber service.

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Vendor Responses to Implement a Point-to-Point
Solution
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Specification for point-to-point WDM System

• NASA has several sites that may benefit from a
  small end WDM solution. As such, the following
  specifications were given to vendors to obtain
  their solution(s).
• A two node system in a point-to-point
  configuration with no link fail-over capability.
• Each node should support 4 gigabit interfaces and
  8 fast ethernet interfaces.
• The nodes should have redundant power supplies
  and processors.
• The nodes should be SNMP managed.
• The distance between nodes will be approximately
  3 miles.

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Vendors

• Cisco
• Nortel
• Zhone
• Ciena
• Ericsson / Marconi
• Adva

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Cisco

• Cisco provided two different designs
• WDM design using their ONS 15454
• This design met all requirements
• SONET design using their ONS 15310
• This design did not support Gigabit Ethernet

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CiscoONS 15454 Solution

• Cisco systems has different DWDM devices.
• ONS 15454 can be a WDM multiplexer and a SONET
  multiplexer.
• 17 slot chassis
• 99.999 reliability
• Cisco ONS 15454 is used by NASAs WANR project.
• This device is feature rich. It can perform more
  functions than required
• Automatic power adjustment of optical lasers
• Reconfigurable Add/Drop Multiplexer (ROADM)
• Up to 64 lambdas (wavelengths) can be
  multiplexed.
• Sophisticated network management tools to
  provision, design and manage the optical network.

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CiscoONS 15454 Solution
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Cisco ONS 15454 Solution

• Cisco is using the SONET MUX capability of the
  15454 to combine the 8 Fast Ethernet connections
  onto one OC-48. This requires the following
  SONET cards
• Eight port 10/100 Ethernet
• SONET Xconn
• OC48 card. This card outputs a DWDM wavelength
  that can be optically multiplexed.
• DataMux Cards (Sub-Lambda Multiplexing Cards) are
  used to multiplex 2 Gigabit Ethernet connections
  onto one 2.5G wavelength.
• Two cards were used to support 4 Gigabit Ethernet
  connections.
• An optical MUX card is used to combine the three
  wavelengths supporting one OC48 and four Gigabit
  Ethernet onto one fiber.

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CiscoONS 15310 Solution

• Cisco ONS 15310 is a SONET device that cannot
  multiplex different wavelengths.
• Can support up to 32 10/100 ethernet channels
• Line side supports up to OC-48 (2.488 Gbps)
• Automatic Protection Switching (APS)
• Can be configured to provide 99.999 reliability
• This design does not include Gigabit Ethernet
• A SONET solution cannot provide the same
  bandwidth as a WDM solution.

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Nortel OM 5200 Solution

• Nortel systems also has a selection of DWDM
  devices. They are proposing their Optical Metro
  (OM) 5200 to meet the requirements.
• The OM 5200 is only a WDM device. It is not a
  SONET MUX, but does have the capability to
  provide sub-lambda multiplexing using certain
  interface cards.
• Nortels Optical Metro 3000 series provides SONET
  MUX capabilities.
• 20 slot chassis
• 99.999 reliability
• This device is feature rich. It can perform more
  functions than required
• Automatic power adjustment of optical lasers
• Reconfigurable Add/Drop Multiplexer (ROADM)
• Up to 48 lambdas (wavelengths) can be
  multiplexed.
• Sophisticated network management tools to
  provision, design and manage the optical network.

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Nortel OM 5200 Solution
OM 5200
OM 5200
GigE (4)
GigE (4)
3 miles
DWDM carrying 4 lambdas
100Base-FX (8)
100Base-FX (8)
Wavelength 1528.77 nm Wavelength 1533.47
nm Wavelength 1530.33 nm Wavelength 1531.90
nm Gigabit Ethernet (FX 850 nm) FastEthernet (FX)
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Nortel OM 5200 Solution

• Nortel is using two 2-port Gigabit Ethernet
  DataMux cards to transport 4 gigabit ethernets.
• Requires two 2.5Gbps wavelengths each of which
  transport 2 Gigabit connections.
• Fast Ethernet DataMux Cards (Sub-Lambda
  Multiplexing Cards) are used to multiplex 4 Fast
  Ethernet (FX) connections onto one 2.5G
  wavelength.
• Since there is a requirement for 8 Fast Ethernet,
  Nortel is recommending two of these cards.
• This will require two wavelengths to support all
  8 FE connections.
• An OMX filter is used to multiplex and
  de-multiplex the optical wavelength.
• This is a separate passive device from the OM
  5200 and does not require power.
• This filter can be purchased to multiplex up to
  32 wavelengths (1, 2, 4 and 32 wavelengths)
• This device is 1 RU

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Nortel OM 5200 / OM 1200 Solution
OM 5200
OM 5200
GigE (4)
GigE (4)
3 miles
OM5200
DWDM carrying 3 lambdas
10/100 TX (8)
OM 1200
10/100 TX (8)
OM 1200
Wavelength 1528.77 nm Wavelength 1533.47
nm Wavelength 1530.33 nm Gigabit Ethernet (FX
850 nm) FastEthernet (TX)
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Nortel OM 5200 / OM 1200 Solution

• Nortel is using two 2-port Gigabit Ethernet
  DataMux cards to transport 4 gigabit ethernets.
• Requires two 2.5 Gbps wavelengths each of which
  transport 2 Gigabit connections.
• A separate device, an OM 1200, is used with this
  option to multiplex Fast Ethernet (TX)
  connections onto a Gigabit Ethernet connection.
• The gigabit is then connected to the OM 5200
  which is transported by a wavelength.
• The Fast Ethernet connections remain isolated.
• An OMX filter is used to multiplex and
  demultiplex the optical wavelength.
• This is a separate passive device from the OM
  5200 and does not require power.
• This filter can be purchased to multiplex up to
  32 wavelengths (1, 2, 4 and 32 wavelengths)
• This device is 1 RU

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ZhoneGigaMux 1608 Solution

• Zhone has proposed their GigaMux 1608. They also
  have other larger WDM platforms with additional
  capabilities.
• The GigaMux 1608 is only a WDM device. It is not
  a SONET MUX but does have the capability to
  provide sub-lambda multiplexing on certain cards.
• 8 slot chassis
• 99.999 reliability

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ZhoneGigaMux 1608 Solution
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ZhoneGigaMux 1608 Solution

• Zhone is using three 2-port Gigabit Ethernet
  DataMux cards to transport 5 gigabit Ethernets.
• A separate device is required with this option to
  multiplex Fast Ethernet connections onto a
  Gigabit Ethernet connection.
• Zhone is recommending using an Ethernet switch
  with VLANs and 802.1q trunking.
• The gigabit uplink is connected to the
  GigaMux1608.
• Zhone does not have a FE DataMux card.
• An optical MUX card is used to combined the three
  wavelengths supporting 5 Gigabit Ethernet
  connections onto one fiber.
• Zhone equipment is being used by NASA/GSFC Code
  900 and UMD MAX.

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CienaCN4200 (2.5 Gbps Wavelength) Solution

• Ciena has proposed their CN4200. They also have
  other larger WDM platforms with additional
  capabilities.
• The CN 4200 is only a WDM device. It is not a
  SONET MUX. However, it uses G709 based time
  slots to perform sub lambda multiplexing.
• This technology allows any sub lambda service to
  be dropped or added at any downstream site.
• 2 slot chassis, 6 slot chassis and a 17 slot
  chassis is planned
• 99.999 reliability
• This device is feature rich. It can perform more
  functions than required
• Electronic Reconfigurable Add/Drop Multiplexer
  (eROADM)
• Sophisticated network management tools to
  provision, design and manage the optical network.

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CienaCN4200 (2.5 Gbps Wavelength) Solution
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CienaCN4200 (2.5 Gbps Wavelength) Solution

• Ciena is using three of their M6 cards.
• One card is supporting 4 Gigabit Ethernet
  connections and 2 Fast Ethernet connections.
• One card is supporting 6 Fast Ethernet
  connections.
• One card is being used to provide 3 WDM uplink
  ports.
• The uplink ports are patched to the optical MUX
  card.
• The ports on the M6 cards can support any data
  rate or protocol.
• Requires the proper SFP.
• The ports can also be used as tributary
  connections or WDM uplink connections.
• The data from the M6 is converted to electrical
  signals.
• The electrical signal is multiplexed with other
  electrical signals using time slots.
• The smallest time slot supports 155 Mbps.
  Gigabit Ethernet requires 7 time slots.
• The electrical signals are sent across the
  backplane to an uplink port that can output a
  wavelength.

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CienaCN4200 (10 Gbps Wavelength) Solution
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CienaCN4200 (10 Gbps Wavelength) Solution

• Ciena is using two of their M6 cards and one 10G
  uplink card.
• One card is supporting 4 Gigabit Ethernet
  connections and 2 Fast Ethernet connections.
• One card is supporting 6 Fast Ethernet
  connections.
• The 10G uplink card is used to multiplex all FE
  and GE connections.
• This design does not have an optical MUX.
  However, the 10G uplink is outputting a WDM
  wavelength.
• By using a WDM wavelength for the 10G uplink, the
  design supports future growth.

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Ericsson / Marconi WDM Solution 6100 / 2330

• Ericsson / Marconi has proposed their 6100
  passive filter with their 2330 mini Multi Service
  Provisioning Platform (MSPP).
• The 6100 is a passive filter that does not
  require power. It is a1RU device.
• 2330 mini MSPP is a SONET MUX that can output a
  WDM wavelength.
• The 2330 is a 1RU device with 6 slots ( 2 for
  line cards and 4 for tributary cards)

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Ericsson / Marconi WDM Solution 6100 / 2330
Model 2330 Mini MSPP
Model 2330 Mini MSPP
Model 2330 Mini MSPP
Model 2330 Mini MSPP
2 x Gigabit Ethernet 2 x Fast E
2 x Gigabit Ethernet 2 x Fast E
2 x Gigabit Ethernet 2 x Fast E
2 x Gigabit Ethernet 2 x Fast E
OC-48 Lambda 1470 nm
OC-48 Lambda 1490 nm
OC-48 Lambda 1470 nm
OC-48 Lambda 1490 nm
RBN GigaEdge 6100 passive CWDM transport (Un-prote
cted)
Model 6100 Passive Filters
Model 6100 Passive Filters
OC-48 Lambda 1510 nm
OC-48 Lambda 1510 nm
Model 2330 Mini MSPP
4 x Fast Ethernet
4 x Fast Ethernet
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Ericsson / Marconi WDM Solution 6100 / 2330

• Ericsson is using their 6100 passive filter to
  multiplex three lambdas from the three 2330
  MSPPs.
• Three 2330 MSPPs are used to support the Fast
  Ethernet and Gigabit Ethernet requirements.
• 1 2330 is supporting 2 FE and 2 GE
• 1 2330 is supporting 2 FE and 2 GE
• 1 2330 is supporting 4 FE

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Adva WDM Solution FS 2000 / FS150

• Adva has proposed their FS 2000 WDM product and
  their FS150 to support the FE requirement.
• The FS 2000 is only a WDM device. It is not a
  SONET MUX but does have the capability to provide
  sub-lambda multiplexing on certain cards.
• 15 slot chassis
• 99.999 reliability
• This device is feature rich. It can perform more
  functions than required
• Automatic power monitoring of optical lasers
• Reconfigurable Add/Drop Multiplexer (ROADM)
• Up to 48 lambdas (wavelengths) can be
  multiplexed.
• Sophisticated network management tools to
  provision, design and manage the optical network.

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Adva WDM Solution FS 2000 / FS150
up to 10 100BT
up to 10 100BT
FSP2000 CWDM/DWDM
Fiber
FSP 150 ME
FSP 150 ME
5 -GbE
5 -GbE
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Adva WDM Solution FS 2000 / FS150

• 4 port TDM that outputs an OC-48 Sonet on a CWDM
  wavelength. (SFP)
• FS150 combines the eight FEs onto a gigabit
  Ethernet.
• The FS150 supports integrated network management
  with the FS 2000.

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WDM Solution Using GBICs / SFPs
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WDM Solution usingGBICs or SFPs
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WDM Solution usingGBICs or SFPs

• SFP or GBIC outputs a WDM wavelength on end user
  equipment.
• Each end user equipment will use a SPF that
  output a different wavelength.
• These wavelengths are multiplexed together using
  a standalone passive optical filter.

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