ENEE4999 University of Tennessee Communication Networks Fiber Transport Design A brief, one-page write-up describing your design solution and why you made

ENEE4999 University of Tennessee Communication Networks Fiber Transport Design A brief, one-page write-up describing your design solution and why you made the choices you did (DWDM vs lease more fiber, amplifiers vs splice through).Completion of the “Assignment 2 – Solution” Excel spreadsheet. Fill in the yellow shaded cells. You may add equations to the spreadsheet to complete some of the cells for you.ENEE 4999 Assignment 2 – Fiber Transport Design.pdfAssignment 2 — Solution.xlsx ENEE 4999 Communication Networks – Fall 2019
Assignment #2: Fiber Transport Design
Due: 10/07/2019
Background
One 10 gigabit Ethernet connection is required between Site A and Site D and another 10 gigabit
Ethernet connection is required between Site A and Site E (see Figure 1).
Site D
Site B
Site A
30km
2 free fiber
pairs
Site C
X km
2 free fiber
pairs
20km
Site E
rd
3 Party
Fiber
Each pair
costs $
Y km
2 free fiber
pairs
Figure 1. Site Topology
Site A is connected to Site B by a fiber bundle with 2 unused pairs of fiber.
Site B is connected to Site C by a fiber bundle with 2 unused pairs of fiber, but the fiber is owned by a 3rd
party and must be leased for a cost:
Dark Fiber Leasing
Up Front One-Time Cost
Annual Maintenance
$500 per km per pair
$100 per km per pair per year
Site C connects to both Sites D and E with fiber bundles with a single unused pair to between each site.
The distance between Sites C and D and Sites C and E are determined by the following equations, where
X and Y are the first and second digits of your UTCID (abcXYZ):
Dcd = (X/2 + 10) km
Dce = (Y/3 + 25) km
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ENEE 4999 Communication Networks – Fall 2019
Fiber losses are given in the table below.
Fiber Losses
Fiber @ 1310 nm
Fiber @ 1500-1600nm
Connector (one per SFP or amplifier)
Splice (assume one splice every 5 km)
Loss
0.5 dB/km
0.2 dB/km
0.5 dB
0.2 dB
Requirements
You are to design the least cost solution assuming a design lifetime of 5 years. You will select the
appropriate SFPs for the routers at Sites A, D, and E. Also, at each intermediate location (Sites B, C, and
D) the fibers must be spliced together or an amplifier installed, depending on the losses incurred in the
fiber.
Amplifiers will add 20 dB of power to the input signal, but also introduce some noise. For the purposes
of this assignment you may ignore the noise. Amplifiers can increase the power in both directions.
Finally, you have sufficient pairs of fibers to make the connections, but to avoiding having to lease two
pairs of fibers between Sites B and C, you may opt to install a Dense Wavelength Division Multiplexing
(DWDM) system at the endpoints to send both 10 gigabit Ethernet connections over the same pair of
fibers, just using different wavelengths of light.
DWDM systems use prisms to combine different wavelengths together on a single fiber. The particular
model available for use in this assignment can combine four different wavelengths together. Passive
DWDM systems, like the one available to you, require special SFPs in the connected devices that send
narrow band light at a specific wavelength. These narrow band SFPs are more expensive than generic
wide band SFPs.
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ENEE 4999 Communication Networks – Fall 2019
Deliverables
Two files must be submitted via Canvas by the deadline:
(1) A brief, one-page write-up describing your design solution and why you made the choices you
did (DWDM vs lease more fiber, amplifiers vs splice through).
(2) Completion of the “Assignment 2 – Solution” Excel spreadsheet. Fill in the yellow shaded cells.
You may add equations to the spreadsheet to complete some of the cells for you.
Resources
You are free to use any of the items in the parts list below.
Description
Part Number
Unit
Cost
Xmit
Pwr
(dBm)
Rcv
Min
(dBm)
Wavelength
(nm)
Cisco 4-Channel Passive
DWDM
15216-FLD-4-30.3
$2,936
Narrow Band 10G SFP
DWDM-SFP10G30.33
$5,440
3
-17
1530.33
Narrow Band 10G SFP
DWDM-SFP10G31.12
$5,440
3
-17
1531.12
Wide Band 10G SFP
Long Reach
SFP-10G-LR
$2,876
0.5
-14
1310
Wide Band 10G SFP
Longer Reach
SFP-10G-ER
$4,110
4
-16
1550
Wide Band 10G SFP
Longest Reach
SFP-10G-ZR
$8,567
-24
1550
EDFA amplifier
PL-1000IL
$5,980
4
adds
20dB
-17 1300-1600
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ENEE 4999 Assignment 2
Site A
Fiber Span A-B
10G to Site D
Transmit Power (dBm)
Received Power (dBm)
SFP Part #
10G to Site E
Transmit Power (dBm)
Received Power (dBm)
SFP Part #
Bill of Materials
Item
Length (km)
Losses (dB)
Cost ($)
Total Cost ($)
Sum of all equipment and leasing costs across all sites
LEASED
Site B
10G between A and D
Xmit Pwr to Site A (dBm)
Rcv Pwr from Site A (dBm)
Xmit Pwr to Site C (dBm)
Rcv Pwr from Site C (dBm)
Amplifier or Splice?
10G between A and E
Xmit Pwr to Site A (dBm)
Rcv Pwr from Site A (dBm)
Xmit Pwr to Site C (dBm)
Rcv Pwr from Site C (dBm)
Amplifier or Splice?
Bill of Materials
Item
Fiber Span B-C
Length (km)
Losses (dB)
# of fiber pairs leased
5 year total cost ($)
Cost ($)
Site C
10G between A and D
Xmit Pwr to Site B (dBm)
Rcv Pwr from Site B (dBm)
Xmit Pwr to Site D (dBm)
Rcv Pwr from Site D (dBm)
Amplifier or Splice?
10G between A and E
Xmit Pwr to Site B (dBm)
Rcv Pwr from Site B (dBm)
Xmit Pwr to Site E (dBm)
Rcv Pwr from Site E (dBm)
Amplifier or Splice?
Bill of Materials
Item
Fiber Span C-D
Length (km)
Losses (dB)
Fiber Span C-E
Length (km)
Losses (dB)
Cost ($)
Site D
10G to Site A
Transmit Power (dBm)
Received Power (dBm)
SFP Part #
Bill of Materials
Item
Site E
10G to Site A
Transmit Power (dBm)
Received Power (dBm)
SFP Part #
Bill of Materials
Item
Site D
Cost ($)
Site E
Cost ($)

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