Technical ReportPDF Available

Equipment power consumption in optical multilayer networks – source data

Authors:

Abstract and Figures

This report contains source data to derive accountable reference power consumption values for IP-over-WDM core network equipment. The reference values are provided in the publication shown in the box below. The report is mainly based on publicly available data from product data sheets.
Content may be subject to copyright.
IBCN-12-001-01 Page 1 of 28
Equipment power consumption in optical
multilayer networks source data
Report Number: IBCN-12-001-01
Date: January 12th, 2012
Authors: Ward Van Heddeghem (ward.vanheddeghem@intec.ugent.be),
Department of Information Technology (INTEC) of Ghent University,
IBBT, Gaston Crommenlaan 8, 9050 Gent, Belgium
Filip Idzikowski (filip.idzikowski@tu-berlin.de)
Department of Telecommunication Systems of Technical University of
Berlin (TKN), Einsteinufer 25, 10587 Berlin, Germany
Available at: http://powerlib.intec.ugent.be
Abstract
This report contains source data to derive accountable reference power consumption values
for IP-over-WDM core network equipment. The reference values are provided in the
publication shown in the box below. The report is mainly based on publicly available data
from product data sheets.
For additional information and referring values given in this work, please cite the
corresponding paper:
W. Van Heddeghem, F. Idzikowski, W. Vereecken, D. Colle, M. Pickavet, and P.
Demeester, "Power consumption modeling in optical multilayer networks", Photonic
Network Communications (2012), DOI: 10.1007/s11107-011-0370-7
Copyright 2012: Ghent University. All rights reserved.
IBCN-12-001-01 Page 2 of 28
Table of Contents
Abstract 1
Table of Contents 2
1 Detailed power consumption data 3
1.1 IP/MPLS layer 3
1.1.1 Systems description and overview 3
1.1.2 Power consumption breakdown 4
1.1.3 Detailed power consumption values 5
1.2 Ethernet layer 8
1.2.1 Systems description and overview 8
1.2.2 Power consumption breakdown 8
1.2.3 Detailed power consumption values 8
1.2.4 Observations and reference values 10
1.3 OTN layer 11
1.4 WDM layer: transponders/muxponders 12
1.4.1 Detailed power consumption values 12
1.4.2 Observations and reference values 14
1.5 WDM layer: optical amplifiers 15
1.5.1 Detailed power consumption values 15
1.5.2 Observations and reference values 18
1.6 WDM layer: WDM terminals 18
1.7 WDM layer: OXC/OADM 19
1.7.1 Detailed power consumption values 19
1.7.2 Observations 20
2 Acronyms 22
3 References 24
3.1 Research publications 24
3.2 Product Data Sheets 24
IBCN-12-001-01 Page 3 of 28
1 Detailed power consumption data
1.1 IP/MPLS layer
The IP/MPLS layer power consumption is based on data sheets for Cisco’s CRS and
Juniper’s T-series core routers.
1.1.1 Systems description and overview
Cisco CRS
The Cisco CRS (Carrier Routing System) core router series consists of 2 generations: the
CRS-1 which was launched in 2004 and the CRS-3 which was launched in 2010.
Both generations come in three different shelf sizes: a 4-slot, 8-slot and 16-slot line card
shelf (LCS). In addition to these three standalone shelf configurations multiple line card
shelves can be connected by using one or more so-called fabric card shelves (FCS) to
increase the total routing capacity. Each FCS can connect 9 LCS. The maximum
configuration consists of 72 LCSs interconnected by 8 FCSs.
The main difference between the CRS-1 and CRS-3 generation is the slot capacity: 40 Gbps
per slot for the CRS-1 and 140 Gbps for the CRS-3.
Each slot takes a modular services card (MSC) and a physical layer interface module (PLIM).
The MSC is always paired with a PLIM and mainly contains the forwarding engine. The PLIM
contains the physical connections to the network, for example a 1-port STM-256 PoS, or a 4-
port 10 Gigabit Ethernet interface. In this document we consider the MSC as the slot card
because it contains the forwarding engine, and the PLIM as the port card.
Juniper T-series
The Juniper T-series core routers, launched in 2002, come in three standalone shelf
configurations: the T320 (16 x 10 Gbps slots), the T640 (8 x 40 Gbps slots), the T1600 (8 x
100 Gbps slots). In addition, multiple of these shelves can be connected by a TX Matrix shelf
(connects up to four T640s) or a TX Matrix Plus shelf (connects up to 16 T1600s1).
Considering only the T1600, each slot can be equipped with a flexible PIC concentrator
(FPC), which can then take depending on the FPC type up to four physical interface
modules (PICs). Similar to the Cisco architecture, the FPC contains the forwarding engine.
The PIC provides the physical layer-1/layer-2 connections. A PIC can contain multiple ports.
Again, in this document we consider the FPC as the slot card, and the PIC as the port card.
The main difference with the CRS architecture is that for the T-series the FPC really contain
PICs and thus acting as a proper slot card, whereas for the CRS, the MSC are not really slot
cards containing another card.
Table 1 provides an overview of the different components and terminology used.
1 However, the hardware guide [7] does not mention how to connect more than 4 T1600s.
IBCN-12-001-01 Page 4 of 28
Table 1 Cisco and Juniper terminology overview
This document
Cisco
Juniper
Basic node
Contains everything but the slot
cards and the port cards, i.e.
mainly routing engine, switch
fabric, internal cooling systems
Line card shelf, plus optionally
fabric card shelf for multi-shelf
systems
Core router chassis, plus
optionally TX Matrix (Plus) chassis
for multi-shelf systems
Slot card
Contains the forwarding engine
Modular Services Card (MSC)
Is always paired with a PLIM
The maximum ‘slot’ throughput is
40 Gbps (CRS-1) and 140 Gbps
(CRS-3)
Flexible PIC Concentrator (FPC)
Depending on the FPC type:
- its maximum throughput is either
4, 16, 40, 50 or 100 Gbps
- can take either 1, 2 or 4 PICs
Port card
Contains the physical interfaces
Physical Layer Interface Module
(PLIM)
Can contain multiple ports of the
same interface
Physical Interface Card (PIC)
Can contain multiple ports of the
same interface
1.1.2 Power consumption breakdown
Table 2 shows the detailed power distribution breakdown of two configurations. We derived
the typical power consumption to be 90% of the given maximum power consumption. Power
values have been rounded; for Juniper power values were derived from current specifications
at 48 VDC.
Table 2 Power consumption breakdown for the CRS-3 16-slot and T1600
Component
Power
Max.
[Watt]
Power
Typ.
[Watt]
(derived)
Source
Cisco CRS-3 16-slot (single shelf system)
Chassis
Switch fabric modules (8x206 W)
1648
1483
[13]
Route processors (2x166 W)
332
299
[13]
Power supply and internal cooling
Fan controller cards (2x344 W)
688
619
[13]
Line cards
Forwarding engines (MSC, 16x446 W)
7136
6422
[13]
Interfaces (PLIM, 16x150 W)
2400
2160
[13]
Juniper T1600
Chassis
Switch fabric (5 SIBs: 5x197 W)
984
886
[3]
Routing engine (1 host subsystem + RE-C1800, 125 W +
82 W)
206
185
[3]
Other (2 SCG, craft interface, LCC-CB, 2x10 W + 10 W +
48 W)
77
69
[3]
IBCN-12-001-01 Page 5 of 28
Component
Power
Max.
[Watt]
Power
Typ.
[Watt]
(derived)
Source
Power supply and internal cooling
Power supply (2) + internal cooling (2x82 W + 480 W)2
643
579
[3]
Line cards
Forwarding engines (FPC, 8x542 W)
4339
3905
[3]
Interfaces (PIC, 16x66 W; generalized maximum value)
1052
947
[3]
1.1.3 Detailed power consumption values
General notes:
Power values stated in the data sheets are the maximum power budget required per
component (for power provisioning purposes), and thus represent an upper limit and not
typical values of power consumption at full load. We derived the typical power
consumption at full load to be 90% of the given maximum power consumption.
The power consumption of the port cards includes the power consumption for powering
the optics. Separate values are not given, except for two 10GE Cisco port cards (see the
table for details).
For a list of Juniper T-series documents and data sheets, see the T-series Technical
Documentation webpage [1].
For an overview of Cisco CRS components, see the list of product data sheets [9]
containing power consumption values.
For an overview of Cisco CRS system description publications, see the Product
installation guides list [10].
Table 3 Detailed power consumption values of IP router components
Manuf.
Description
Power
Max.
[Watt]
Power
Typ.
[Watt]
(derived)
Source
Basic
Node
Juniper
T320 chassis, 160 Gbps
(custom calculation based on: switch fabric, routing engine,
power supply, internal cooling, other)
605
545
[4]
Juniper
T640 chassis, 320 Gbps
(custom calculation based on: switch fabric, routing engine,
power supply, internal cooling, other)
1 114
1003
[5]
Juniper
T1600 chassis, 800 Gbps
(custom calculation based on: switch fabric, routing engine,
power supply, internal cooling, other)
1 910
1719
[3]
2 The actual maximum cooling power consumption is given 22 A x 48 V = 1056 W, but this is for “high
temperature environment or cooling component failure”. As such, we have used a more realistic maximum power
consumption of 10 A x 48 V = 480 W.
IBCN-12-001-01 Page 6 of 28
Manuf.
Description
Power
Max.
[Watt]
Power
Typ.
[Watt]
(derived)
Source
Juniper
TX Matrix chassis, connects up to four T640s
(custom calculation based on: switch fabric, routing engine,
power supply, internal cooling, other)
3 144
2830
[6]
Juniper
TX Matrix Plus chassis, connects up to four3 T1600s
(switch fabric, routing engine, power supply, internal cooling,
other)
As an good approximation, half the power (3518 W) is
required per two T1600s, since only 5 SIB cards are
required for connecting 1 or 2 T1600s, whereas 10 SIB
cards are required for connecting 3 or 4 T1600s
7 036
6332
[7]
Cisco
CRS-1 16-slot single-shelf system chassis, 640 Gbps
2 920
2628
[Idzikow
ski2009]
Cisco
CRS-3 16-slot single-shelf system chassis, 2240 Gbps
(custom calculation based on: switch fabric modules, route
processors, fan controller cards)
2 668
2401
[13]
Cisco
CRS-1 Fabric card shelf, connects up to nine CRS 16-slot
systems
9 000
8100
[14]
Slot cards
Juniper
Type-3 FPC, 40 Gbps full duplex, max. 4 PICs
437
393
[3]
Juniper
Type-4 FPC, 40 Gbps full duplex, max. 1 PIC
394
355
[3]
Juniper
Type-4 FPC, 100 Gbps full duplex, max. 2 PICs
542
488
[3]
Cisco
CRS-1 MSC 40 Gbps full duplex
350, 375
315, 338
[12], [13]
Cisco
CRS-3 MSC 140 Gbps full duplex
446
401
[11], [13]
Port Cards
Juniper
1x Gigabit Ethernet PIC with SFP, reach 70 km
11.9
10.7
[2]
Juniper
2x Gigabit Ethernet PIC with SFP, reach 70 km
11.9
10.7
[2]
Juniper
4x Gigabit Ethernet PIC with SFP, reach 70 km
23.8
21.4
[2]
Juniper
10x Gigabit Ethernet PIC with SFP, reach 70 km
29.9
26.9
[2]
Juniper
1x 10GE Ethernet PIC with XENPAK (T1600 Router),
reach 80 km
26.6
23.9
[2]
Juniper
1x 10GE Ethernet LAN/WAN PIC with XFP (T1600
Router), Type 4 FPC compatible, reach 80 km
43.0
37.8
[2]
Juniper
1x 10GE Ethernet DWDM PIC (T1600 Router), reach 80
km
26.6
23.9
[2]
Juniper
1x 10GE Ethernet DWDM OTN PIC (T1600 Router),
reach 80 km
26.6
23.9
[2]
Juniper
1x 10GE Ethernet IQ2 PIC with XFP (T1600 Router),
reach 80 km
56.0
50.4
[2]
Juniper
1x 10GE Ethernet Enhanced IQ2 (IQ2E) PIC with XFP
(T1600 Router), reach 80 km
56.0
50.4
[2]
3 The product brochure ([8]) mentions up to sixteen T1600s, however the hardware guide [7] only details on
connecting up to four.
IBCN-12-001-01 Page 7 of 28
Manuf.
Description
Power
Max.
[Watt]
Power
Typ.
[Watt]
(derived)
Source
Juniper
1x SONET/SDH OC48/STM16 (Multi-Rate) PIC with SFP,
reach 80 km
9.5
8.6
[2]
Juniper
1x SONET/SDH OC192c/STM64 PIC (T1600 Router),
reach 80 km
21.6
19.4
[2]
Juniper
1x SONET/SDH OC192/STM64 PICs with XFP (T1600),
reach 80 km
25.0
22.5
[2]
Juniper
4x SONET/SDH OC192/STM64 PICs with XFP (T1600),
Type 4 FPC compatible, reach 80 km
53.1
47.8
[2]
Juniper
1x SONET/SDH OC768c/STM256 PIC (T1600 Router),
Type 4 FPC compatible, reach 2 km
65.7
59.1
[2]
Juniper
1x 100-Gigabit Ethernet PIC, reach 10 km
not
available
[2]
Cisco
16x CRS OC-48c/STM-16c POS/DPT, reach 80 km
136, 150
122, 135
[13], [16]
Cisco
4x CRS OC-192c/STM-64 POS/DPT, reach 80 km
138, 150
124,135
[13], [17]
Cisco
1x CRS OC-768c/STM-256c POS, reach 2 km
65, 150
59, 135
[13], [15]
Cisco
1x CRS-3 100 Gigabit Ethernet, reach 10 km
150
135
[13]
Cisco
14x CRS-3 10GE LAN/WAN-PHY, reach 80 km
150
(of which
35 W for
optics
budget)
135
[13]
Cisco
20x CRS-3 10GE LAN/WAN-PHY, reach 80 km
150
(of which
30 W for
optics
budget)
135
[13]
Cisco
8x CRS 10GE, XFP
88
79
[13]
Cisco
8x CRS 10GE, XENPAK, reach 80 km
110, 150
99, 135
[13], [18]
Cisco
4x 10GE Tunable WDMPHY, reach 2000 km
150
13
[19]
Cisco
1x OC-768C/STM-256C Tunable WDMPOS, reach
1000 km
150
135
[20]
Cisco
1x OC-768C/STM-256C DPSK+ Tunable WDMPOS,
reach 2000 km
150
135
[21]
IBCN-12-001-01 Page 8 of 28
1.2 Ethernet layer
The Ethernet layer power consumption is based on data sheets for the Cisco Nexus 7018
and Juniper EX8216 switch.
1.2.1 Systems description and overview
Cisco Nexus 7018
The Cisco Nexus 7000 series switches consist of two types: the 10-slot Nexus 7010, and the
18-slot Nexus 7018. We only consider the latter. The Nexus 7018 chassis has 18 slots which
can contain up to 16 I/O modules and up to 2 supervisor modules. The base system consists
of 3 to 5 fabric modules and a set of fan trays.
Juniper EX8216
The Juniper EX8216 Ethernet switch is the high-capacity switch of the EX8200 series. It has
16 slots. The base systems consist of a routing engine, switch fabric cards and fan trays.
1.2.2 Power consumption breakdown
Table 4 shows the detailed power distribution breakdown of two 10G configurations.
The source of the values can be found in section 1.2.3.
Table 4 Power consumption breakdown for the Cisco and Juniper Ethernet switches
Component
Power
Typ.
[Watt]
Percentage
Cisco Nexus 7018
Chassis
Switch fabric modules (5x90 W)
450
4%
Supervisor module (2x190 W)
380
3%
Fan trays (1x569 W)
569
5%
Line cards
32 port 10G cards (16x611 W)
9776
87%
Juniper EX8216
Chassis
Routing engine (1), Fans (2), Fabric cards (8)
1080
18%
Line cards
8 port 10G cards (16x299 W)
4784
82%
1.2.3 Detailed power consumption values
Table 5 lists the power consumption values of the individual components of the listed
switches.
IBCN-12-001-01 Page 9 of 28
Table 6 lists the power consumption values of complete systems, for various maximum
configurations.
Table 5 Detailed power consumption values of Ethernet switches components
Manuf.
Description
Power
Typ.
[Watt]
Power
Max. [Watt]
Power
Used [Watt]
Source
Cisco
Nexus 7000, 32-port 10-Gigabit Ethernet I/O
module
611
750
611
[22]
Cisco
Nexus 7000, 8-port 10-Gigabit Ethernet I/O
module with XL option
520
650
520
[22]
Cisco
Nexus 7000, 48-port 1-Gigabit Ethernet I/O
module
358
400
358
[22]
Cisco
Nexus 7000, supervisor module, per module
value; switch takes up to 2 modules
190
210
190
[22]
Cisco
Nexus 7018, fabric module, per module value;
switch takes 3 to 5 modules
90
100
90
[22]
Cisco
Nexus 7018, fan trays (total number of fan trays)
569
1433
569
[22]
Juniper
EX8216 Base system, 1 routing engine, 8 switch
fabric modules, 2 fan trays
The datasheet mentions reserved power and
typical power. However, the values for reserved
power correspond to the typical values in the
EX8200 Ethernet Line cards datasheet.
Likewise, the values for the typical power
correspond to the maximum power in the
mentioned datasheet.
1080
2280
1080
[23]
Juniper
EX8216 8-port 10G module (EX8200-8XS)
299
450
299
[24]
Juniper
EX8216 48-port 1G module (EX8200-48F)
185
330
185
[24]
Table 6 Detailed typical power consumption values of complete Ethernet switch
configurations
Manuf.
Description
Port
speed
(Gbps)
Power per
port, typ.
[Watt]
Source
Cisco
Nexus 7018 average value per port
A Cisco Nexus 7000 18-Slot Switch fully populated with Cisco
Nexus 32-Port 1 and 10 Gigabit Ethernet Modules has the
capability to deliver up to 10.2 (Tbps) of switching performance,
with a typical power consumption of less than 10 W per port.
10
10
[25]
Cisco
Nexus 7018, maximum 10 G configuration, fully populated with
16 32-port 10G Ethernet modules + fans + 2 supervisor
modules + 5 fabric modules
512 ports for a total of 11175 W typical. But slot switching
capacity limited to 230 Gbps, so we assume 23 ports per slot,
which gives 368 ports in total
10
30
[22]
Cisco
Nexus 7018, maximum 1 G configuration, fully populated with
16 48-port 1G Ethernet modules + fans + 2 supervisor modules
+ 5 fabric modules
768 ports for a total of 7127 W typical
1
9.3
[22]
Juniper
EX8216, maximum 10 G configuration, fully populated with 16
8-port 10G modules + 1 routing engine, 8 fabric cards and 2
fans
128 ports for a total of 5864 W typical
10
45.8
[23]
Juniper
EX8216, maximum 1 G configuration, fully populated with 16
48-port 1G modules + 1 routing engine, 8 fabric cards and 2
fans
768 ports for a total of 4040 W typical
1
5.3
[23]
IBCN-12-001-01 Page 10 of 28
1.2.4 Observations and reference values
The Ethernet power consumption is based on two systems: the Cisco Nexus 7018 and the
Juniper EX8216. The power consumption values are based on the typical power
consumption of a maximum configured system, including the power overhead of the chassis
and any required control and switch fabric cards.
Figure 1 Power consumption of the Ethernet layer interfaces, per port
Observations:
The typical power-per-port values, including chassis overhead, are plotted in Figure 1.
The power values of both systems are roughly in line, as such averaging of the values
makes sense.
The reference values are given in Table 7.
As there is no public data available for higher capacities, we assume the same
exponential function:  
  .
The value 0.73 follows from  
    

Table 7 Ethernet layer (bidirectional)
Type
Remarks
Power
consumption
[Watt]
Power
efficiency
[Watt/Gbps]
Ethernet 1 Gbps port
Includes chassis overhead
7 W
7 W/Gbps
Ethernet 10 Gbps port
38 W
3.8 W/Gbps
Ethernet 40 Gbps port
(105 W)
(2.6 W/Gbps)
Ethernet 100 Gbps port
(205 W)
(2.1 W/Gbps)
Ethernet 400 Gbps port
(560 W)
(1.4 W/Gbps)
Ethernet 1 Tbps port
(1100 W)
(1.1 W/Gbps)
0
20
40
60
80
100
120
010 20 30 40
P [Watt]
Port speed [Gbps]
Cisco Nexus 7018
Juniper EX8216
IBCN-12-001-01 Page 11 of 28
1.3 OTN layer
The OTN power consumption is based on confidential information; as such the values are
approximations.
The power consumption values are based on the typical power consumption of a maximum
configured system, including the power overhead of the chassis and any required control and
switch fabric cards.
Figure 2 Power consumption of the OTN layer interfaces, per port
Observations:
As can be seen in Figure 2, the values scale quite smoothly with the port speed.
The values are given in Table 8.
As there is no data available for capacities higher than 100 Gbps, we assume the same
exponential function as present for the 40 Gbps to 100 Gbps cards.
 
  .
This line is also indicated in Figure 2.
Table 8 OTN layer (bidirectional)
Type
Remarks
Power
consumption
[Watt]
Power Efficiency
[Watt/Gbps]
OTN 1 Gbps port
Includes chassis
overhead
7 W
7 W/Gbps
OTN 2.5 Gbps port
15 W
6 W/Gbps
OTN 10 Gbps port
34 W
3.4 W/Gbps
OTN 40 Gbps port
160 W
4 W/Gbps
OTN 100 Gbps port
360 W
3.6 W/Gbps
OTN 400 Gbps port
(1240 W)
(3.1 W/Gbps)
OTN 1 Tbps port
(2800 W)
(2.8 W/Gbps)
0,0
50,0
100,0
150,0
200,0
250,0
300,0
350,0
400,0
020 40 60 80 100
P [Watt]
Port speed [Gbps]
IBCN-12-001-01 Page 12 of 28
1.4 WDM layer: transponders/muxponders
1.4.1 Detailed power consumption values
The power consumption value in the column labeled ‘Used’ is calculated by using the values
in the previous 3 columns. If the value in the source was unspecified to be typical or
maximum, it is assumed to be typical, and this value is shown in the used column. Otherwise
the values in the typical and maximum column are averaged, with the maximum value (first)
being reduced to 75%.
Table 9 Detailed power consumption values of transponders
Manuf.
Description
Speed
(Gbps)
Power [Watt]
Source
Unsp.
Typ.
Max.
Used
Fujitsu
FLASHWAVE 7200, Tunable Optical
Transponder Solution, ANSI shelf: 381 W typical
for 16 2.5 G transponders (OC-48/STM-16)
mgmt shelf: 215 W typical fully populated
(381+215)/16 = 37.2 W
2.5
-
37.2
-
37.2
[26]
Fujitsu
FLASHWAVE 7200, Tunable Optical
Transponder Solution, ANSI shelf: 333 W typical
for 8 10G transponders (OC-192/STM-64))
mgmt shelf: 215 W typical fully populated
(333+215)/8 = 68.5 W
10
-
68.5
-
68.5
[26]
Fujitsu
FLASHWAVE 7200, Tunable Optical
Transponder Solution, ETSI shelf: 334 W typical
for 14 2.5 G transponders + mgmt shelf: 215 W
typical fully populated
(334+215)/14 = 39.2 W
2.5
-
39.2
-
39.2
[26]
Fujitsu
FLASHWAVE 7200, Tunable Optical
Transponder Solution, ETSI shelf: 292 W typical
for 7 10G transponders + mgmt shelf: 215 W
typical fully populated
(292+215)/7 = 72.43 W
10
-
72.4
-
72.4
[26]
Fujitsu
FLASHWAVE 7300 WDM transponder, 10G
Ethernet
(transponder, protection and regenerator
system)
Muxponder capability (4x2.5 Gb). Feature list
also mentions:
• Performance monitoring
• Out-of-Band forward error correction
• Control plane routing functionality, 681 W for 18
bidir 10G + 206 W mgmt shelf = (681 + 206)/18
= 49.3 W/Gbps bidir
10
49.3
-
-
49.3
[27]
Ciena
F10-T 10G transponder module, 10G
transponder for the CN 4200 FlexSelect platform
family, F10-Tunable with maximum FEC (does
not include XFP): 35 W
10
35
-
-
35
[28]
Ciena
F10-T 10G transponder module, 10G
transponder for the CN 4200 FlexSelect platform
family, F10-Tunable with maximum FEC (does
not include XFP): 41 W
10
41
-
-
41
[28]
Transmode
10G Tunable OTN Transponder, Max. 22 W
worst case including client optics
10
-
-
22
16.5
[29]
Transmode
10G Tunable Transponder, 25 W fully equipped
10
-
-
25
18.75
[30]
Transmode
Double 10GbE Transponder.
Max. 40 W in Transponder mode (fully equipped
with client and DWDM XFPs). So 20 W for one
transponder.
10
-
-
20
15
[31]
IBCN-12-001-01 Page 13 of 28
Manuf.
Description
Speed
(Gbps)
Power [Watt]
Source
Unsp.
Typ.
Max.
Used
Transmode
Double 10G Lite Transponder, Max. 18 W in
Transponder mode (fully equipped with client
and DWDM XFPs). So 9 W for one transponder.
10
-
-
9
6.75
[32]
Transmode
Tunable 10G Transponder with extended reach,
22 W (Max. consumption including transceivers)
10
-
-
22
16.5
[33]
Transmode
7900/01 10G Transponder. Can also be used in
regenerator mode, Max. 11 W
10
-
-
11
8.25
[34]
Transmode
7910/01 10G Transponder. Can also be used in
regenerator mode, Max. 17 W
10
-
-
17
12.75
[35]
Transmode
MultiRate Transponder 7700
The 7700 is a fully featured 100Mb/s 2.7Gb/s
Transponder with pluggable optics on both the
line and client side. Fully equipped: 5.5 W
2.5
-
-
5.5
4.125
[36]
Transmode
TM-4000 40G transponder unit, Max. power
consumption: 130 W
40
-
-
130
97.5
[37]
Transmode
TM-4000 40G transponder unit + chassis,
Chassis has room for 8 cards. Max. chassis
power consumption: 1500 W, with max. card
power consumption 160 W (muxponder card).
Thus: 1500 - 8x160 = 220 W chassis
Thus: for 8 transponders =130 + 220/8 = 158 W
40
-
-
158
118.5
[37]
Cisco
Extended Performance 10-Gbps Full-Band
Tunable Multirate Transponder Card for the
Cisco ONS 15454 Multiservice Transport
Platform
10
-
35
50
36.25
[38]
Cisco
ONS 15454 2.5 Gbps Multirate Transponder
Card
2.5
-
25
35
25.63
[39]
Cisco
ONS 15454 10-Gbps Multirate Enhanced
Transponder Card
10
-
40
50
38.75
[40]
Tellabs
40 Gigabit Transponder Module (FGTM)
40
-
167
-
167
[41]
Paper
(based on) Alcatel Lucent WaveStar OLS 1.6T
ULH, WDM transponder based on Alcatel Lucent
WaveStar OLS 1.6T ultra-long haul system
(OLS: optical line system)
10
73
-
-
73
[Shen2009]
Paper
WDM transponder 40G, LH, Nokia Siemens
estimate
40
66
-
-
66
[Palkopoulo
u2009]
Paper
100G transponder (QPSK modulation)
100
351
-
-
351
[Morea2011]
IBCN-12-001-01 Page 14 of 28
1.4.2 Observations and reference values
Figure 3 Transponder power consumption in function
of the data rate
Observations:
From Figure 3: Fujitsu has higher values, because these values are based on complete
systems (including management shelf). The percentage of overhead ranges from 22% to
42%.
The Transmode 40G transponder is shown once with and once without chassis
overhead. This overhead represents 11% of the total power consumption.
From confidential data (a-conf and b-conf in Figure 3), we see that the influence of the
line side maximum transmission distance is of (arguably) minor influence on the power
consumption. A 10G transponder with reach up to 1200 km consumes about 15% more
than its 200 km version. Given the range of power consumption values for the different
equipment and the fact that it is not always clear from the data sheets what the maximum
supported reach is, we do not make a distinction based on the reach.
Based on the distribution in Figure 3, we assume the following typical power consumption
values, including chassis and management overhead power consumption:
For 2.5G transponders we assume 25 W
For 10G transponders we assume 50 W
For 40G transponders we assume 100 W
As there is no public vendor data available for 100G, 400G and 1T transponders, we assume
the same function where the power is doubled for a forth-fold increase in capacity:
 
  . We thus get:
For 100G transponders we assume 150 W.
For 400G transponders we assume 300 W.
For 1T transponders we assume 500 W (rounded from 474 W). In [Morea2011] a power
estimation (351 W) is given for 100G coherent transponders. This seems to suggest that the
digital signal processing functionality of these transponders leads to more than the double
power consumption of our extrapolated estimates.
0,0
20,0
40,0
60,0
80,0
100,0
120,0
140,0
010 20 30 40 50
P [Watt]
Data rate [Gbps]
Fujistsu
Ciena
Transmode
Cisco
paper
a-conf
b-conf
+ chassis
IBCN-12-001-01 Page 15 of 28
Furthermore, we assume the following guidelines:
Maximum power consumption values, as opposed to typical values, can be
approximated by adding 33%.
The chassis and management power overhead per transponder is about 20% of the
above quoted typical consumption values (which already includes this overhead).
1.5 WDM layer: optical amplifiers
1.5.1 Detailed power consumption values
Table 10 lists the power consumption values of individual optical amplifiers
Table 11 lists the power consumption values of complete amplification systems, for
various maximum configurations.
See the note at the beginning of section 1.4 for an explanation of the different power value
columns.
Table 10 Detailed power consumption values of optical amplifiers
Manuf.
Description
Power [Watt]
Source
Unsp.
Typ.
Max.
Used
Cisco
ONS 15501 EDFA optical amplifier, mode of operation:
unidirectional
Typ. 8 W, max. 15 W
-
16
30
19.25
[43]
conf
EDFA, 2-stage
25 W per direction
50
-
-
50
Confidential
conf
Raman amp (~10 dB gain)
50 W per direction
100
-
-
100
Confidential
Infinera
Optical Line Amplifier, EDFA
Typ. 26 W per fiber (probably), so 52 W per fiber pair
Max. 53 W per fiber (probably), so 106 W per fiber pair
-
52
106
65.75
[44]
Infinera
Optical Line Amplifier, RAMAN
Typ. 45 W per fiber (probably), so 90 W per fiber pair
Max.105 W per fiber (probably), so 210 W per fiber pair
-
90
210
123.7
5
[44]
Cisco
ONS 15454 Optical amplifier card (pre/booster)
Typ. 30 W, max. 39 W. Seems unidirectional, so double
-
60
78
59.25
[47]
Cisco
ONS 15454 Optical amplifier card (inline)
Typ. 19 W, max. 23 W. Seems unidirectional, so double
-
38
46
36.25
[47]
Cisco
ONS 15454 Raman C-band optical amplifier card (15454-
OPT-RAMP-C)
Typ. 44 W, max. 55 W
-
88
110
85.25
[48]
conf
Line amplifier card, very long span
-
80
Confidential
conf
Line amplifier card, long span
-
70
Confidential
conf
Line amplifier card, medium span
-
47
Confidential
conf
Line amplifier card, short span
-
47
Confidential
conf
Raman pump
-
100
Confidential
IBCN-12-001-01 Page 16 of 28
Manuf.
Description
Power [Watt]
Source
Unsp.
Typ.
Max.
Used
MRV
Fiber Driver optical amplifier module (EM316EDFA), For
metro networks
Power usage: max. 6 W. Seems unidirectional, so double
-
-
12
9
[50]
MRV
LambdaDriver Optical Amplifier Module. (EM800-
Oax/EM1600-Oax), For long haul networks. 18 dBm output.
20 dB gain without midstage access
From 3.3 W (18 dBm type) to 15 W (high-power 21 dBm
type). Seems unidirectional based on accompanying figures,
so double
-
-
6.6
4.95
[51]
MRV
LambdaDriver High Power Optical Amplifier Module, EDFA
(EM800-Oax/EM1600-Oax), Mainly serve high wavelength
count (more than 32 waves) DWDM or ultra long single span
applications, with midstage access
From 3.3 W (18 dBm type) to 15 W (high-power 21 dBm
type). Seems unidirectional based on accompanying figures,
so double
-
-
30
22.5
[52]
MRV
LambdaDriver Optical Amplifier Module, Raman. (EM1600-
OAR), for long haul networks
Max. 60 W. Seems unidirectional based on accompanying
figure, so double.
-
-
120
90
[53]
Oclaro
PureGain PG1000, Compact EDFA Pre-Amplifier, 30 dB
gain
Max. power consumption is 4 W with cooling (typ. 2 W),
1.5 W uncooled (typ. 1 W). Unidirectional, so double
-
4
8
5
[54]
Oclaro
PureGain PG 1000, Compact EDFA Booster amplifier, 25 dB
gain
Max. power consumption is 4 W with cooling, 1.5 W
uncooled. Unidirectional, so double
-
4
8
5
[55]
Oclaro
PureGain PG1600, Compact EDFA, For add drop terminals,
23 dB Gain
Max. 9 W. Unidirectional, so double
-
-
18
13.5
[56]
Oclaro
PureGain PG2800 Configurable EDFA, model 2811, Inline 1
without Mid-Stage Access,
15-25 dB variable gain
9 W. Unidirectional, so double
-
-
18
13.5
[57]
Oclaro
PureGain PG2800 Configurable EDFA, model 2821, Inline 1
with Mid-Stage Access,
17-29 dB variable gain
14 W. Unidirectional, so double
-
-
28
21
[57]
Oclaro
PureGain PG3000 Performance EDFA, Inline 2 with Mid-
Stage Access
24-34 dB variable gain
14 W and 20 W. Unidirectional, so double
-
28
40
29
[58]
Ciena
Fixed-gain amplifier for ActivSpan 4200 Series (OAF-00-1-
C), Preamp/Booster/Inline
36 W probably maximum, 'unidirectional design', so double
-
-
72
54
[59]
Ciena
Variable-gain amplifier for ActivSpan 4200 series (OAV-OS-
U-C), Preamp/Booster/Inline with Mid-stage access
48 W probably maximum, 'unidirectional design', so double
-
-
96
72
[59]
Alcatel
Alcatel LM1600 Dual stage line amplifier
26 W. Unidirectional, so double
-
-
52
39
[60]
IBCN-12-001-01 Page 17 of 28
Manuf.
Description
Power [Watt]
Source
Unsp.
Typ.
Max.
Used
Paper
optical amplifier
"power consumption of optical amplifiers is between 3 and
12 W depending on the overall insertion loss and the length
of fiber delay lines"
Probably unidirectional
-
6
12
7.5
[Aleksic2009]
Paper
Each EDFA is 8 W based on Cisco ONS 15501 EDFAs
Typ. 8 W, max.15 W
-
16
30
19.25
[Shen2009]
[43]
Paper
EDFA booster/pre-amplifier combination (OLT)
25 W
25
-
-
25
[Grobe2011]
Table 11 Detailed power consumption values of complete amplification systems
Manuf.
Description
Power [Watt]
Source
Unsp.
Typ.
Max.
Used
Ciena
Common Photonic layer, fully filled Line Amplification site
(88 wavelengths) = 95 W (0.1 rack)
Probably bidirectional because for other 'sites' it always
mentions specifically that it is 'per direction'
-
95
-
95
[42]
Infinera
Optical Line Amplifier, EDFA, including chassis, ancillary and
controller (OMM)
amplifier: 2x53 W = 106 W
chassis, ancillary: 122 W [from email corresp.]
OMM: 28 W [from email corresp.]
= 256 W
-
-
256
192
[44]
Infinera
Optical Line Amplifier, RAMAN, including chassis, ancillary
and controller (OMM)
amplifier: 2x105 W = 210 W
chassis, ancillary: 122 W [email corresp.]
OMM: 28 W [email corresp.]
= 360 W
-
-
360
270
[44]
Fujistsu
Flashwave 7700 ILA, "ultra long haul DWDM"
621.8 W typical for 176 channels (10G each)
-
621,8
-
622
[45]
Fujistsu
Flashwave 7600 ILA
601 W typical for 32 wavelengths (up to 10G)
-
601
-
601
[46]
Cisco
ONS 15454 multiservice transport platform, EDFA, specified
typical power consumption
-
200
307
215
[49]
Cisco
ONS 15454 multiservice transport platform, Raman,
specified typical power consumption
-
288
415
300
[49]
conf
Line amplifier card, very long span
Maximum number of amp cards per shelf/rack + controller
cards and fans
-
-
-
119
Confidential
conf
Line amplifier card, long span
Maximum number of amp cards per shelf/rack + controller
cards and fans
-
-
-
108
Confidential
conf
Line amplifier card, medium span
Maximum number of amp cards per shelf/rack + controller
cards and fans
-
-
-
66
Confidential
Alcatel
Alcatel LM1600, Dual stage line amplifier
Max number of amp cards per shelf, including mandatory
cards (controller, fans, alarm, …)
-
-
103
77
[60]
IBCN-12-001-01 Page 18 of 28
1.5.2 Observations and reference values
Line rate does not have an influence on power consumption of optical amplifiers. There is
also no consistent difference in booster, pre- or line amplifiers (see MRV and confidential
vendor).
The power consumption of optical amplifiers increases with longer span lengths (based
on the detailed data available from the confidential vendor).
The optical amplifier type (EDFA or Raman) has a large influence. The Infinera RAMAN
optical amplifiers consume without management almost exactly twice as much as the
EDFA optical amplifiers. This is also the case for the confidential vendor RAMAN
amplifier.
Management is also a big contributor: for Infinera (quite reliable values thanks to email
correspondence with Infinera): management is fixed at 140 W, and one bidirectional
amplifier is 106 W (EDFA) or 210 W (Raman). For the confidential vendor, the
management adds about 20 W to each bidirectional amplifier in a fully-configured
chassis.
1.6 WDM layer: WDM terminals
Table 12 lists the power consumption values of WDM terminals. See the note at the
beginning of section 1.4 for an explanation of the different power value columns.
Table 12 Detailed power consumption values of WDM terminals
Manuf.
Description
Power [Watt]
Source
Unsp.
Typ.
Max.
Used
Cisco
15454 MSTP WDM terminal, 40 channels, no
transponders included
1 x 40DMX + 1 x OPT-BST + 1 x OPT-PRE = 80 W
(typ.), 117 W (max.)
Overhead: 150 W (typ.)
Total: 230 W (typ.)
-
230
-
230
[61], [47]
Cisco
15454 MSTP WDM terminal, 80 channels, no
transponders included
2 x 40DMX + 1 x OPT-BST + 1 x OPT-PRE = 100 W
(typical), 150 W (max.)
Overhead: 150 W (typ.)
Total: 250 W (typ.)
-
250
-
250
[61], [47]
Alcatel
LM1600-based MUX/DEMUX 96 channels (12x8
MUX/DEMUX), 10G each. Including amplifiers, no
transponders included
custom calculation (1 controller card, 1 fan, 1 ALCT, 1
alarm card, 1 PSU + 12 CMDX + 1 BMDX + 2
amplifiers)
-
-
344
258
[60]
Alcatel
LM1600-based MUX/DEMUX 80 channels (12x8
MUX/DEMUX), 10G each. Including amplifiers, no
transponders included
custom calculation (1 controller card, 1 fan, 1 ALCT, 1
alarm card, 1 PSU + 10 CMDX + 1 BMDX + 2
amplifiers)
-
-
314
236
[60]
Fujistsu
Flashwave 7700 terminal, "ultra long haul DWDM"
810.6 W typical for 176 channels (10G each)
-
811
-
811
[45]
IBCN-12-001-01 Page 19 of 28
1.7 WDM layer: OXC/OADM
1.7.1 Detailed power consumption values
The calculations for OXCs and OADMs are based on the Cisco OSN 15454 system. Data
sheets used include [61], [62] and [63].
Table 13 Detailed power consumption values of OXC/OADMs
Manuf.
Component
Power Typ.
[Watt]
Source
Cisco
ROADM 40-channel
(based on: Cisco 40-Channel Reconfigurable Optical Add/Drop
Multiplexing Portfolio for 15454 MSTP)
Switching
Wavelength Selective Switch (2 x 40WSS @ 63 W)
126 W
[61]
Demultiplexer (2 x 40DMX @ 20 W)
40 W
[61]
Booster amplifier (2 x OPT-BST @ 30 W)
60 W
[47]
Pre- amplifier (2 x OPT-PRE @ 30 W)
60 W
[47]
Overhead
150 W
custom
estimation
Cisco
OXC 40-channel, N-degree, D- add/drop-degree
(based on: Cisco 40-Channel Reconfigurable Optical Add/Drop
Multiplexing Portfolio for 15454 MSTP)
Switching
Wavelength cross-connect (N x 40WXC)
N x 25 W
[61]
Booster amplifier (N x OPT-BST)
N x 30 W
[61]
Pre- amplifier (N x OPT-PRE)
N x 30 W
[61]
Add/Drop
Multiplexer (D x 40MUX)
D x 20 W
[61]
Demultiplexer (D x 40DMX)
D x 20 W
[61]
Overhead
150 W
custom
estimation
Cisco
ROADM 80-channel
(based on: Cisco 40-Channel Reconfigurable Optical Add/Drop
Multiplexing Portfolio for 15454 MSTP)
Switching
Wavelength Selective Switch (4 x 40WSS @ 63 W)
252 W
[61]
Demultiplexer (4 x 40DMX @ 20 W)
80 W
[61]
Booster amplifier (2 x OPT-BST @ 30 W)
60 W
[61]
Pre- amplifier (2 x OPT-PRE @ 30 W)
60 W
[61]
Overhead
150 W
custom
estimation
IBCN-12-001-01 Page 20 of 28
Manuf.
Component
Power Typ.
[Watt]
Source
Cisco
OXC 80-channel, N-degree, D- add/drop-degree
(based on: Cisco 80-Channel Wavelength Cross-Connect Card for the
Cisco ONS 15454 Multiservice Transport Platform)
Switching
Wavelength cross-connect (N x 80WXC)
N x 20 W
[63]
Booster amplifier (N x OPT-BST)
N x 30 W
[61]
Pre- amplifier (N x OPT-PRE)
N x 30 W
[61]
Add/Drop
Multiplexer (D x 2 x 40MUX)
D x 40 W
[61]
Demultiplexer (D x 2 x 40DMX)
D x 40 W
[61]
Overhead
150 W
custom
estimation
1.7.2 Observations
Figure 4 Typical power consumption of ROADMs and OXCs (add/dropping for each
degree), not including overhead power
As public data about complete OXC systems is sparse, the data is based solely on the Cisco
OSN 15454 system.
ROADM functionality is constructed by combining of a number of building blocks: wavelength
selective switch (WSS) cards, MUX/DEMUX cards and pre/booster amplifier cards. Single
module cards that contain all of this functionality are also available, and are labeled SMR
(single module ROADM).
OXC functionality is constructed from wavelength cross-connect (WXC) cards, pre and
booster amplifiers cards. For each degree to be added/dropped, MUX/DEMUX cards are
required.
0
100
200
300
400
500
600
700
800
900
1000
2 3 4 5 6
P [Watt]
Node degree
OXC - 80ch
OXC - 40ch
ROADM - 80ch
ROADM - 40ch
ROADM - 40ch (SMR)
IBCN-12-001-01 Page 21 of 28
Observations:
From Figure 4: ROADMs consume slightly more power than 2-degree OXCs. This is
because the WSS cards used in the ROADMs consume more than the WXC cards used
in the OXCs.
From Figure 4: the SMRs consume significantly less than the combined systems.
From Figure 4: OXC power consumption scales nicely with the degree (apart from the
overhead power consumption, which is not shown in the figure)
The overhead for both ROADMs and OXCs is estimated to be around 150 W per node.
This is based on (a) the remaining difference with the typical power consumption values
cited (by the datasheet) for a 2-degree 80-channel ROADM node (452 W, see Table 13),
as well as (b) the combined power consumption of the fan module, power module and
controller card.
IBCN-12-001-01 Page 22 of 28
2 Acronyms
ALCT Automatic Laser ConTrol
ANSI American National Standards Institute
BMDX Band MUX/DEMUX
CMDX Channel MUX/DEMUX
CRS Carrier Routing System
DMX Demultiplexer
DEMUX Demultiplexer
DPSK Differential Phase Shift Keying
DPT Dynamic Packet Transport
DWDM Dense Wavelength Division Multiplexing
EDFA Erbium-Doped Fiber Amplifier
ETSI European Telecommunications Standards Institute
FCS Fabric Card Shelf
FEC Forward Error Correction
FGTM Forty Gigabit Transponder Module
FGTM-M Forty Gigabit Transponder Module-Multiplexer
FPC Flexible PIC Concentrator
ILA In-Line Amplifier
IP Internet Protocol
LCC-CB Line Card Chassis Control Board
LCS Line Card Shelf
LH Long Haul
MPLS Multiprotocol Label Switching
MSC Modular Services Card
MSTP Multiservice Transport Platform
MUX Multiplexer
OADM Optical Add/Drop Multiplexer
OC Optical Carrier
OLA Optical Line Amplifier
OLS Optical Line System
OLT Optical Line Terminal
OMM OTC Management Module
OPT-BST Optical Booster Amplifier
OPT-PRE Optical Preamplifier
OTC Optical Transport Chassis
IBCN-12-001-01 Page 23 of 28
OTN Optical Transport Network
OXC Optical Cross Connect
PIC Physical Interface Card
PLIM Physical Layer Interface Module
PoS Packet over SONET
QPSK Quadrature Phase Shift Keying
ROADM Reconfigurable OADM
SCG SONET Clock Generator
SDH Synchronous Digital Hierarchy
SFP Small Form-factor Pluggable
SIB Switch Interface Board
SONET Synchronous Optical NETworking
STM Synchronous Transport Module
ULH Ultra Long Haul
WDM Wavelength Division Multiplexing
WXC Wavelength Cross-Connect
XFP 10 Gigabit Small Form Factor Pluggable
IBCN-12-001-01 Page 24 of 28
3 References
3.1 Research publications
[Aleksic2009]
S. Aleksic, Analysis of Power Consumption in Future High-Capacity Network Nodes,
Journal of Optical Communications and Networking (JOCN), vol. 1, 2009, pp. 245-
258, DOI: 10.1364/JOCN.1.000245
[Grobe2011]
K. Grobe, M. Roppelt, A. Autenrieth, J.-P. Elbers, and M. Eiselt, Cost and energy
consumption analysis of advanced WDM-PONs, IEEE Communications Magazine,
vol. 49, no. 2, p. s25-s32, Feb. 2011, DOI: 10.1109/MCOM.2011.5706310
[Idzikowski2009]
F. Idzikowski, Power Consumption of network elements in IP over WDM networks,
Technische Universität Berlin, Telecommunication Networks Group, TKN Technical
Report TKN-09-006, July 2009
[Morea2011]
A. Morea, S. Spadaro, O. Rival, J. Perelló, F. Agraz and D. Verchere, Power
Management of Optoelectronic Interfaces for Dynamic Optical Networks, ECOC
2011, Geneva (Switzerland)
[Palkopoulou2009]
E. Palkopoulou, D. A. Schupke, and T. Bauschert, Energy efficiency and CAPEX
minimization for backbone network planning: Is there a tradeoff?, ANTS 2009, Delhi
(India), DOI: 10.1109/ANTS.2009.5409867
[Shen2009]
G. Shen and R. S. Tucker, Energy-minimized design for IP over WDM networks,
Journal of Optical Communications and Networking, vol. 1, 2009, pp. 176-186., DOI:
10.1364/JOCN.1.000176
3.2 Product Data Sheets
IP/MPLS
[1] Juniper, Technical Documentation webpage, http://www.juniper.net/techpubs/en_US/release-
independent/junos/information-products/pathway-pages/t-series/t1600/index.html, Last
accessed October 2011
[2] Juniper, T1600 Router PIC Guide, http://www.juniper.net/techpubs/en_US/release-
independent/junos/information-products/topic-collections/hardware/t-
series/t1600/pics/t1600-pic.pdf , March 2011
[3] Juniper, T1600 Router Hardware Guide, Appendix D,
http://www.juniper.net/techpubs/en_US/release-independent/junos/information-
products/topic-collections/hardware/t-series/t1600/hwguide/t1600-hwguide.pdf,
13 November 2009
[4] Juniper, T320 Router Hardware Guide, http://www.juniper.net/techpubs/en_US/release-
independent/junos/information-products/topic-collections/hardware/t-
series/t320/hwguide/t320-hwguide.pdf, 27 July 2011
[5] Juniper, T640 Router Hardware Guide, http://www.juniper.net/techpubs/en_US/release-
independent/junos/information-products/topic-collections/hardware/t-
series/t640/hwguide/t640-hwguide.pdf, 25 November 2009
[6] Juniper, TX Matrix Router Hardware Guide, http://www.juniper.net/techpubs/en_US/release-
independent/junos/information-products/topic-collections/hardware/t-series/tx-
matrix/hwguide/tx-matrix-hwguide.pdf, October 2010
[7] Juniper, TX Matrix Plus Router Hardware Guide, http://www.juniper.net/techpubs/en_US/release-
independent/junos/information-products/topic-collections/hardware/t-series/tx-matrix-
plus/hwguide/tx-matrix-plus-hwguide.pdf, October 2010
[8] Juniper, T series Core Routers Product Overview,
www.juniper.net/us/en/local/pdf/datasheets/1000051-en.pdf, June 2011
IBCN-12-001-01 Page 25 of 28
[9] Cisco, Product data sheet list,
http://www.cisco.com/en/US/products/ps5763/products_data_sheets_list.html, Last accessed
October 2011
[10] Cisco, Product installation guides list,
http://www.cisco.com/en/US/products/ps5763/prod_installation_guides_list.html, Last
accessed October 2011
[11] Cisco, CRS-3 Modular Services Card (Line Card),
http://www.cisco.com/en/US/prod/collateral/routers/ps5763/CRS_MSC-140G.pdf, February 2010
[12] Cisco, CRS Modular Services Card (Line Card),
http://www.cisco.com/en/US/prod/collateral/routers/ps5763/ps5862/product_data_sheet09186
a008022d5ee.pdf, February 2010
[13] Cisco, CRS Carrier Routing System 16-Slot Line Card Chassis System Description,
http://www.cisco.com/en/US/docs/routers/crs/crs1/16_slot_lc/system_description/reference
/guide/sysdsc.pdf, October 2010
[14] Cisco, CRS Carrier Routing System Multishelf System Description,
http://www.cisco.com/en/US/docs/routers/crs/crs1/mss/16_slot_fc/system_description/refer
ence/guide/mss_sysdsc.pdf, April 2011
[15] Cisco, CRS Single-Port OC-768c/STM-256c POS Interface Module,
http://www.cisco.com/en/US/prod/collateral/routers/ps5763/ps5862/product_data_sheet09186
a008022d5f2.pdf, February 2010
[16] Cisco, CRS 16-Port OC-48c/STM-16c POS/DPT Interface Module,
http://www.cisco.com/en/US/prod/collateral/routers/ps5763/ps5862/product_data_sheet09186
a008022d5f0.pdf, February 2010
[17] Cisco, CRS 4-Port OC-192c/STM-64 POS/DPT Interface Module,
http://www.cisco.com/en/US/prod/collateral/routers/ps5763/ps5862/product_data_sheet09186
a008022d5ef.pdf, February 2010
[18] Cisco, CRS 8-Port 10 Gigabit Ethernet Interface Module,
http://www.cisco.com/en/US/prod/collateral/routers/ps5763/ps5862/product_data_sheet09186
a008022d5e9.pdf, February 2010
[19] Cisco, CRS 4-Port 10GE Tunable WDMPHY Interface Module,
http://www.cisco.com/en/US/prod/collateral/routers/ps5763/ps6112/product_data_sheet0900a
ecd80395b82.pdf, November 2010
[20] Cisco, CRS 1-Port OC-768C/STM-256C Tunable WDMPOS Interface Module,
http://www.cisco.com/en/US/prod/collateral/routers/ps5763/product_data_sheet0900aecd8039
5bbe.pdf, February 2010
[21] Cisco, CRS 1-Port OC-768C/STM-256C DPSK+ Tunable WDMPOS Interface Module,
http://www.cisco.com/en/US/prod/collateral/routers/ps5763/data_sheet_c78-478689.pdf,
November 2010
Ethernet
[22] Cisco, Nexus 7000 site preparation guide, technical specifications,
http://www.cisco.com/en/US/docs/switches/datacenter/hw/nexus7000/site_prep/guide/nexus70
00siteprep.pdf, August 2011
[23] Juniper, EX8216 Ethernet switch datasheet,
http://www.juniper.net/us/en/local/pdf/datasheets/1000283-en.pdf, July 2011
[24] Juniper, EX8200 Ethernet Line Cards datasheet,
http://www.juniper.net/us/en/local/pdf/datasheets/1000262-en.pdf, September 2011
[25] Cisco, Nexus 7000 32-Port 1 and 10 Gigabit Ethernet Module datasheet,
http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9402/data_sheet_c78-
605622.pdf, March 2011
Transponders
[26] Fujitsu, Flashwave 7200,
http://www.fujitsu.com/downloads/TEL/fnc/datasheets/flashwave7200.pdf, March 2002
[27] Fujitsu, Flashwave 7300,
http://www.fujitsu.com/downloads/TEL/fnc/datasheets/flashwave7300.pdf, March 2002
IBCN-12-001-01 Page 26 of 28
[28] Ciena, F10-T 10G Transponder Module, http://media.ciena.com/documents/F10-T_A4_DS.pdf,
October 2010
[29] Transmode, 10G Tunable OTN Transponder, http://www.transmode.com/doc/doc_download/187-10g-
tunable-otn-transponder, 2010
[30] Transmode, 10G Tunable Transponder, http://www.transmode.com/doc_download/15-10g-tuneable-
transponder, March 2008
[31] Transmode, Double 10Ge Transponder, http://www.transmode.com/doc_download/62-double-10gbe-
transponder, 2010
[32] Transmode, Double 10G Lite Transponder, http://www.transmode.com/doc_download/5-dual-10g-
lite-transponder, 2010
[33] Transmode, Tunable 10G Transponder with extended reach,
http://www.transmode.com/doc_download/61-tp10g-extended-reach, 2008
[34] Transmode, 7900/01 10G Transponder, http://www.transmode.com/doc_download/23-7900-10g-
transponder, 2009
[35] Transmode, 7910/01 10G Transponder, http://www.transmode.com/doc_download/156-791001-10g-
transponder, 2010
[36] Transmode, MultiRate Transponder 7700, http://www.transmode.com/doc_download/22-multirate-
transponder-7700, March 2008
[37] Transmode, TM-4000 40G transponder unit, http://www.transmode.com/doc_download/259-40g-
solution, 2010
[38] Cisco, Extended Performance 10-Gbps Full-Band Tunable Multirate Transponder Card for the Cisco ONS
15454 Multiservice Transport Platform,
http://www.cisco.com/en/US/prod/collateral/optical/ps5724/ps2006/data_sheet_c78-
580763.pdf, January 2010
[39] Cisco, ONS 15454 2.5 Gbps Multirate Transponder Cards,
http://www.cisco.com/application/pdf/en/us/guest/products/ps2006/c1650/ccmigration_09186
a00801a24d9.pdf, September 2004
[40] Cisco, ONS 15454 10-Gbps Multirate Enhanced Transponder Card,
http://www.cisco.com/en/US/prod/collateral/optical/ps5724/ps2006/ps5320/product_data_she
et0900aecd80101903.pdf, December 2005
[41] Tellabs, 7100 Optical Transport System, 40 Gigabit Transponder & Muxponder Modules (FGTM & FGTM-
M), http://www.tellabs.com/products/7000/tlab7100_fgtm.pdf, Rev. B, July 2010
Optical Amplifiers
[42] Ciena, Common Photonic layer,
http://media.ciena.com/documents/Common_Photonic_Layer_A4_DS.pdf, August 2011,
http://media.ciena.com/documents/Common_Photonic_Layer_DS.pdf, August 2011
[43] Cisco, ONS 15501 EDFA optical amplifier,
http://www.cisco.com/warp/public/cc/pd/olpl/metro/on15500/on15501/prodlit/ons15_ds.pdf,
May 2003
[44] Infinera, Optical Line Amplifier, EDFA,
http://www.infinera.com/pdfs/ola/infinera_ola_data_sheet.pdf, June 2010
[45] Fujistsu, Flashwave 7700 ILA, http://www.fujitsu.com/downloads/IN/fw7700.pdf, 2002
[46] Fujistsu, Flashwave 7600 ILA, http://www.fujitsu.com/downloads/IN/fw7600.pdf, 2002
[47] Cisco, ONS 15454 Optical amplifier card (pre/booster),
http://www.cisco.com/en/US/prod/collateral/optical/ps5724/ps2006/product_data_sheet0900a
ecd800e4d24.pdf, January 2007
[48] Cisco, ONS 15454 Raman C-band optical amplifier card (15454-OPT-RAMP-C),
http://www.cisco.com/en/US/prod/collateral/optical/ps5724/ps2006/data_sheet_c78-
500925.pdf, October 2008
[49] Cisco, ONS 15454 multiservice transport platform, EDFA,
http://www.cisco.com/en/US/prod/collateral/optical/ps5724/ps2006/ps5320/product_data_she
et09186a00801849e7.pdf, April 2011
[50] MRV, Fiber Driver optical amplifier module (EM316EDFA),
http://www.mrv.com/datasheets/FD/PDF300/MRV-FD-EDFA_HI.pdf, Rev. A5, 2010
IBCN-12-001-01 Page 27 of 28
[51] MRV, LambdaDriver Optical Amplifier Module. (EM800-Oax/EM1600-Oax),
http://www.mrv.com/datasheets/LD/PDF300/MRV-LD-OAB_HI.pdf, Rev. 5, December 2009
[52] MRV, LambdaDriver High Power Optical Amplifier Module, EDFA (EM800-Oax/EM1600-Oax),
http://www.mrv.com/datasheets/LD/PDF300/MRV-LD-OAB_HI.pdf, Rev. 5, December 2009
[53] MRV, LambdaDriver Optical Amplifier Module, Raman. (EM1600-OAR),
http://www.mrv.com/datasheets/LD/PDF300/MRV-LD-EM1600-OARB_HI.pdf, Rev. 5, December 2009
[54] Oclaro, PureGain PG1000, Compact EDFA Pre-Amplifier,
http://www.oclaro.com/datasheets/Oclaro_PG1000_Pre-amp_v2_0.pdf, 2010
[55] Oclaro, PureGain PG 1000, Compact EDFA Booster amplifier,
http://www.oclaro.com/datasheets/Oclaro_PG1000_Booster_v2_0.pdf, 2010
[56] Oclaro, PureGain PG1600, Compact EDFA,
http://www.oclaro.com/datasheets/PG1600_0611_v1.pdf, 2011
[57] Oclaro, PureGain PG2800 Configurable EDFA, model 2811,
http://www.oclaro.com/datasheets/PG2800_0611_v1.pdf, 2011
[58] Oclaro, PureGain PG3000 Performance EDFA,
www.oclaro.com/datasheets/PG3000_0611_v1.pdf, 2011
[59] Ciena, Fixed-gain amplifier for ActivSpan 4200 Series (OAF-00-1-C),
http://media.ciena.com/documents/Optical_Amplifier_Modules_A4_DS.pdf, October 2010
WDM terminal
[60] Alcatel, LM1626 Technical handbook, http://www.scribd.com/doc/5033940/1626LM-mannual, 2005
[61] Cisco, 40-Channel Reconfigurable Optical Add/Drop Multiplexing Portfolio for 15454 MSTP,
http://www.cisco.com/en/US/prod/collateral/optical/ps5724/ps2006/product_data_sheet0900a
ecd805ebf1d.pdf, February 2007
OXC/ROADMS
[62] Cisco, 40-Channel Single-Module ROADM for the Cisco ONS 15454 Multiservice Transport Platform,
http://www.cisco.com/en/US/prod/collateral/optical/ps5724/ps2006/data_sheet_c78-
578552.pdf, January 2010
[63] Cisco, 80-Channel Wavelength Cross-Connect Card for the Cisco ONS 15454 Multiservice Transport
Platform, http://www.cisco.com/en/US/prod/collateral/optical/ps5724/ps2006/datasheet_c78-
598521.pdf, April 2010
IBCN-12-001-01 Page 28 of 28
Acknowledgments
The research leading to these results was carried out with the support of the IBBT-project
GreenICT, the European Community’s Seventh Framework Programme (FP7/2007-2013)
under grant agreement n. 216863 (Network of Excellence BONE”), grant agreement
n. 257740 (Network of Excellence TREND”) and grant agreement n. 247674
(‘STRONGEST’ project).
... An electric IP router port with 400 Gbps rate connects to a transponder. The power consumption of Ethernet ports is 560 Watt [59]. Data from the IP layer enter the elastic architecture through that connection. ...
... Their power consumption is 560 Watt [59]. That connection is used by the data of the IP layer for entering the elastic architecture. ...
Thesis
Full-text available
Optical computer networks provide the means for reliable data communications with low transmission and propagation delay, low error rate, and at the same time, high throughput. Their adoption rate constantly increases for fulfilling connectivity needs in the backbone of large countries or the constant need for access from the end-user perspective. The increase of resource usage leads to higher energy consumption which is a factor that should be confronted by embedding energy-efficiency in the computational logic while transferring data. Energy-efficient algorithms design the logical backbone topology of the network with low energy consumption and the preservation of performance at a high level. On the other hand, optical access networks intermediate between end-user units and the backbone, covering the last mile of connectivity. The fast access in these networks from the end-user perspective, improves their quality of service and the overall throughput. Artificially intelligent algorithms exploit the operating state of the network by adapting to its runtime conditions, allocating resources more efficiently than the static alternatives. Thus, being suitable for either the backbone or the access part of the network. Two types of AI algorithms are designed and evaluated which are capable of achieving the aforementioned goals, i.e., those with energy-efficiency in their computational logic for the backbone, and also those offering adaptive bandwidth distribution at the access side of the network.
... For the DOTS architecture, an extra 2 CU per switch is included to account for software integration costs [12]. As for the calculation of energy costs, the power consumption per device is obtained from [12], [13], and from the component datasheets. This calculation takes into account a cost of 0.33 USD per kWh (in 2023) and an average annual market inflation rate of 2.5% [14,15]. ...
Article
We investigate the techno-economic benefits of a novel optical transport network (OTN) architecture that meets the transport requirements of 6G systems in the Metro/Core network segments. The proposed solution is based on the disaggregation of the monolithic chassis-based node architecture that is used today to deploy OTN networks. The disaggregation breaks up the monolithic node system into stand alone white-boxes interconnected through active optical cables in a leaf-spine configuration. The leafs consist of line cards that provide client port interfaces, while the spines are Ethernet switches that emulate the process of OTN switching. The resulting solution provides a scalable and software-controlled OTN architecture based on off-the-shelf white-boxes that minimize the network acquisition costs. Results for a selected network scenario show that - compared to the monolithic solution - the disaggregated architecture yields average cost savings on the order of 39.7%.
... BVTs are connected to router ports with rate 400 Gbps. The power consumption of each port is 560 Watt [22]. This is the main access point of the IP layer to the elastic architecture and also the switch fabric is not considered to consume power. ...
Article
Full-text available
The flexible nature of elastic optical networks allows advanced resource management. Algorithms facilitating the procedure of resource allocation can provide connectivity that is energy-efficient. Also, the network’s performance is slightly affected and remains at a high level. There are innovative developments during the last years concerning the physical layer that increase the performance even further. Such a technique which provides spectrum sharing is called Signal Overlap. Specifically, the modulation includes two independent data flows that rely on the same spectrum resources and propagate combined in the optical fiber. When energy-efficient algorithms are designed to exploit the Signal Overlap technique for building the virtual topology of the network, less energy-consuming components operate in the network. This procedure also preserves the performance at a stable level. In this paper, the Signal Overlap technique is used to design a new algorithm that increases energy efficiency in elastic optical networks. To the best of authors’ knowledge, it is the first time that the Signal Overlap technique is used for that purpose. Also, the execution time is low upon mid-to-large topologies, so the algorithm is candidate for real-time execution.
... Electric IP router ports with 400 Gbps each, connect to bitrate-variable transponders. Their power consumption is 560 Watt [10]. That connection is used by the data of the IP layer for entering the elastic architecture. ...
Conference Paper
Full-text available
Elastic optical networks provide the required flexibility to perform efficient resource management for achieving the goal that relates to energy efficiency. The latest and innovative physical-layer development of the Signal Overlap technique provides the means to push efficiency even further. Two independent data streams can be modulated by utilizing the same resources and propagate together in the optical fiber. The energy-consuming components that are required to build the virtual topology of the network, decrease in numbers by utilizing an elaborate energy-efficient heuristic which exploits this new physical-layer capability. For that reason, a new energy-efficient heuristic method is designed and evaluated that exploits the aforementioned Signal Overlap technique.
... An electric IP router port with 400 Gbps rate connects to a transponder. The power consumption of Ethernet ports is 560 Watt 25 . Data from the IP layer enter the elastic architecture through that connection. ...
Article
Full-text available
Elastic optical networks offer a reliable platform for achieving energy efficiency by supporting extensive optical grooming of variable-rate data traffic along with the traditional electrical data aggregation methods. The procedure of routing and spectrum allocation in a topology of nodes has explicit effect to the amount of consumed power. A new energy-efficient method for designing the virtual topology in IP-over-elastic networks, is introduced and evaluated. It is concluded that it consumes less power under different elastic transponder types, it designs the virtual topology using fewer transponders, and finally, there is a slight increase in the number of end-to-end lightpath hops. The proposed method is characterized by high performance and low lightpath establishment complexity. Therefore, it is suitable for a broad range of network configurations and transponder types.
Article
Several works have been done in order to balance the energy consumption of the network with traffic which aims to have a positive impact on the CO2 emission. However, CO2 and energy consumption cannot be considered proportionate if the means of electricity production differs. In this paper, we have proposed two different metrics namely Carbon Emission Factor and Non-Renewable Energy usage percentage for achieving green network. We have designed an algorithm considering these metrics as objective functions. We have considered a software defined network approach and provided a set of data and control plane for each metric. Their performances are then analyzed and compared with respect to green policy enabled Shortest Path First algorithm. All the experiments are conducted on GÉANT network with realistic demand size. A comprehensive analysis of the quality of service parameters like the end to end delay and packet loss is also done for each metric of the algorithm.
Article
Full-text available
Due to the development of broadband access technologies including FTTx and 5G, the traffic in metro and core networks is forecasted to be more dynamic. To support this dynamicity, flex-grid elastic optical networks (EONs) have started to become prolific over the past few years. During the migration from the legacy fixed-grid wavelength division multiplexing optical networks to flex-grid EONs, a transition technology called the fixed/flex-grid optical network has become popular. In such fixed/flex-grid networks, the energy consumption caused by serious capacity mismatch between variable IP traffic and the different optical channel capacities is significantly high to be ignored. In fact, energy-efficient traffic grooming (i.e., to aggregate multiple fine-grained IP flows and map them onto a lightpath) is a challenge in IP-over-fixed/flex-grid optical networks because co-existing fixed-grid and flex-grid nodes have different traffic grooming ability and energy consumption models. To overcome the challenge, we propose an auxiliary-graph-based energy-efficient traffic-grooming ( EETG ) algorithm in IP-over-fixed/flex-grid optical networks for the first time. The construction of an auxiliary graph (AG) model for each connection request is one of the core steps. The well-designed weight-assignment scheme of the AG establishes the relationships between traffic grooming operations and specific energy consumption models. The final traffic grooming operations are undertaken based on the calculated weight-minimized path. The simulation results show that the EETG algorithm achieves 1) the least energy consumption compared with the state-of-the-art traffic grooming algorithms under the non-blocking scenario; and 2) achieves the tradeoff between energy consumption and blocking probability under the blocking scenario.
Article
Full-text available
There are all sort of indications that Internet usage will go only upwards, resulting in an increase in energy consumption and CO2 emissions. At the same time, a significant amount of this carbon footprint corresponds to the information and communication technologies (ICT) sector, with around one third being due to networking. In this paper we have approached the problem of green networking from the point of view of sustainability. Here, alongside energy-aware routing, we have also introduced pollution-aware routing with environmental metrics like carbon emission factor and non-renewable energy usage percentage. We have proposed an algorithm based on these three candidate-metrics. Our algorithm provides optimum data and control planes for three different metrics which regulate the usage of different routers and adapt the bandwidth of the links while giving the traffic demand requirements utmost priority. We have made a comparison between these three metrics in order to show their impact on greening routing. The results show that for a particular scenario, our pollution-aware routing algorithm can reduce 36% and 20% of CO2 emissions compared to shortest path first and energy-based solutions, respectively.
Article
The success of novel multimedia services such as Video-on-Demand (VoD) is leading to a tremendous growth of Internet traffic. Content caching can help mitigate such uncontrolled growth by storing video content closer to the users in core, metro and access network nodes. So far, fixed, and, especially, mobile access networks have evolved independently, leveraging logically (and often also physically) separate infrastructures. This means that mobile users cannot access caches placed in the fixed access network (and vice-versa) even if they are geographically close to them, and energy consumption implications of such undesired effect must be investigated. In this paper we perform an evaluation of energy-efficient VoD content caching and distribution under static and dynamic traffic in converged networks as well as in non-converged networks. We define an Integer Linear Programming optimization problem modeling an energy-efficient placement of caches in core, metro and fixed/mobile access nodes where energy is minimized by powering-on and -off caches located in different segments of the network and by performing an energy-efficient VoD-request routing. To deal with problem complexity, we propose an energy-efficient content caching and VoD-request routing heuristic algorithm, which is also adopted under dynamic traffic scenarios. Our results show how deploying caches in the access and metro network segments can reduce the overall energy consumption of the network. Moreover, results show how the evolution towards a Fixed-Mobile Converged metro/access network, where fixed and mobile users can share caches, can reduce the energy consumed for VoD content delivery.
Technical Report
Full-text available
This report collects numbers (available in the literature and in the product data sheets) on power consumption of various network elements in IP over WDM networks.
Article
Full-text available
We propose a protocol enhancement to manage the power state of optoelectronic interfaces in automatically reconfigurable optical networks. For dynamic traffic scenarios 67% of energy savings have been estimated for the optoelectronic interfaces.
Article
Full-text available
Power consumption and the footprint of future network elements are expected to become the main limiting factors for scaling the current architectures and approaches to capacities of hundreds of terabits or even petabits per second. Since the underlying demand for network capacity can be satisfied only by contemporaneously increasing transmission bit rate, processing speed, and switching capacity, it unavoidably will lead to increased power consumption of network nodes. On the one hand, using optical switching fabrics could relax the limitations to some extent, but large optical buffers occupy larger areas and dissipate more power than electronic ones. On the other hand, electronic technology has made fast progress during the past decade regarding reduced feature size and decreased power consumption. It is expected that this trend will continue in the future. This paper addresses power consumption issues in future high-capacity switching and routing elements and examines different architectures based on both pure packet-switched and pure circuit-switched designs by assuming either all-electronic or all-optical implementation, which can be seen as upper and lower bounds regarding power consumption. The total power consumption of a realistic and appropriate technology for future high-performance core network nodes would probably lie somewhere between those two extreme cases. Our results show that implementation in optics is generally more power efficient; especially circuit-switched architectures have a low power consumption. When taking into account possible future developments of Si CMOS technology, even very large electronic packet routers having capacities of more than hundreds of terabits per second seem to be feasible. Because circuit switching is more power efficient and easier to implement in optics than pure packet switching, the scalability limitation due to increased power consumption could be considerably relaxed when a kind of dynamic optical circuit switching is used within the core network together with an efficient flow aggregation at edge nodes.
Article
Full-text available
As the Internet expands in reach and capacity, the energy consumption of network equipment increases. To date, the cost of transmission and switching equipment has been considered to be the major barrier to growth of the Internet. But energy consumption rather than cost of the component equipment may eventually become a barrier to continued growth. Research efforts on “greening the Internet” have been initiated in recent years, aiming to develop energy-efficient network architectures and operational strategies so as to reduce the energy consumption of the Internet. The direct benefits of such efforts are to reduce the operational costs in the network and cut the greenhouse footprint of the network. Second, from an engineering point of view, energy efficiency will assist in reducing the thermal issues associated with heat dissipation in large data centers and switching nodes. In the present research, we concentrate on minimizing the energy consumption of an IP over WDM network. We develop efficient approaches ranging from mixed integer linear programming (MILP) models to heuristics. These approaches are based on traditional virtual-topology and traffic grooming designs. The novelty of the framework involves the definition of an energy-oriented model for the IP over WDM network, the incorporation of the physical layer issues such as energy consumption of each component and the layout of optical amplifiers in the design, etc. Extensive optimization and simulation studies indicate that the proposed energy-minimized design can significantly reduce energy consumption of the IP over WDM network, ranging from 25% to 45%. Moreover, the proposed designs can also help equalize the power consumption at each network node. This is useful for real network deployment, in which each node location may be constrained by a limited electricity power supply. Finally, it is also interesting and useful to find that an energy-efficient network design is also a cost-efficient design because of the fact that IP router ports play a dominating role in both energy consumption and network cost in the IP over WDM network.
Article
Next-generation access systems will have to provide bandwidths in excess of 100 Mb/s per residential customer, in conjunction with high customer count and high maximum reach. Potential systems solutions include several variants of WDM-PONs. These systems, however, differ significantly in their cost (capital expenditures) and energy consumption potential. We compare several WDM-PON concepts, including hybrid WDM-PON with integrated per-wavelength multiple access, with regard to these parameters. We also show the impact and importance of generic next-generation bandwidth and reach requirements.
Conference Paper
Energy efficiency and the minimization of capital expenditures (CAPEX) for network equipment are studied for two network architectures: IP over WDM and IP over OTN over WDM. Case study results from mixed integer linear programming (MILP) formulations indicate that a CAPEX optimized network yields solutions having minimum energy consumption for both architectures. However, it is shown that the most cost efficient architecture is not always the least energy consuming. We quantify the occurring tradeoff and observe that network equipment CAPEX are dominating in terms of cost. Additionally, it is observed that the relative power contribution of different network layers is independent of the average inter-node traffic demand for both studied architectures.
Fixed-gain amplifier for ActivSpan 4200 Series (OAF-00-1-C), http://media.ciena.com/documents
  • Ciena
Ciena, Fixed-gain amplifier for ActivSpan 4200 Series (OAF-00-1-C), http://media.ciena.com/documents/Optical_Amplifier_Modules_A4_DS.pdf, October 2010 WDM terminal
  • Transmode
Transmode, 7910/01 10G Transponder, http://www.transmode.com/doc_download/156-791001-10g- transponder, 2010
  • Transmode
Transmode, 7900/01 10G Transponder, http://www.transmode.com/doc_download/23-7900-10g- transponder, 2009
40-Channel Single-Module ROADM for the Cisco ONS 15454 Multiservice Transport Platform
  • Cisco
Cisco, 40-Channel Single-Module ROADM for the Cisco ONS 15454 Multiservice Transport Platform, http://www.cisco.com/en/US/prod/collateral/optical/ps5724/ps2006/data_sheet_c78- 578552.pdf, January 2010