DPtech LSW6602-24GT4XGS User manual

Copyright © Hangzhou DPtech Technologies Co. Ltd. i
DPtech LSW6600 Ethernet Switch
Installation Manual
Document version: v1.3

Copyright © Hangzhou DPtech Technologies Co. Ltd. ii
Declaration
Copyright © 2014 Hangzhou DPtech Technologies Co., Ltd.All rights reserved.
No Part of the manual can be extracted or copied by any company or
individuals without written permission, and cannot be transmitted by any
means.
is the trade mark of Hangzhou DPtech Technologies Co., Ltd.
All other trademarks that may be mentioned in this manual are the property of
their respective owners.
Owing to product upgrading or other reasons, information in this manual is
subject to change. Hangzhou DPtech Technologies Co., Ltd. has the right to
modify the content in this manual, as it is a user guides, Hangzhou DPtech
Technologies Co., Ltd. made every effort in the preparation of this document to
ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute the warranty of any kind
express or implied.
Hangzhou DPtech Technologies Co., Ltd.
Address: 6th floor, Zhongcai Mansion, 68 Tonghelu, Binjiangqu, Hangzhou
Zip code: 310051
Website: http://www.dptechnology.net
Mailbox: [e-mail]
7x24 hours technical support hotline: [phone]

DPtech LSW6600 Ethernet Switch Installation Manual V1.3
Copyright © Hangzhou DPtech Technologies Co. Ltd. iii
Contents
1 Product overview..........................................................................................................1-1
1.1 Product introduction................................................................................................. 1-1
1.2 Product features ......................................................................................................1-1
1.3 Front view ................................................................................................................1-3
1.3.1 LSW6602-24GT4XGS product appearance .................................................1-3
1.3.2 LSW6602-48GT4XGS product appearance .................................................1-6
1.3.3 LSW6600-8GT24XGS product appearance .................................................1-8
1.3.4 LSW6600-48XGS4QXP product appearance .............................................1-10
1.4 Port introduction ....................................................................................................1-12
1.4.1 Console port ................................................................................................1-12
1.4.2 10/100/1000Base-T Ethernet electrical interface........................................1-13
1.4.3 SFP port ......................................................................................................1-14
1.4.4 Combo port..................................................................................................1-18
1.5 Product assembly ..................................................................................................1-18
1.5.1 Processor and storage ................................................................................1-18
1.5.2 All interfaces ................................................................................................1-18
2 Installation preparation.................................................................................................2-1
2.1 General safety recommendations............................................................................2-1
2.2 Examining the installation site ................................................................................. 2-1
2.2.1 Temperature/humidity requirement...............................................................2-2
2.2.2 Cleanliness....................................................................................................2-2
2.2.3 ESD requirements ......................................................................................... 2-3
2.2.4 Anti-interference requirements ......................................................................2-3
2.2.5 Lightning protection .......................................................................................2-4
2.2.6 Grounding requirements ...............................................................................2-4
2.2.7 Wiring cable requirements ............................................................................2-4
2.3 Safety with laser ......................................................................................................2-5
2.4 Required tools .........................................................................................................2-5
3 Device installation ........................................................................................................3-1
3.1 Installation procedure .............................................................................................. 3-1
3.2 Before installation ....................................................................................................3-2
3.3 Installing the switch to a place.................................................................................3-2
3.3.1 Install the switch to a workbench ..................................................................3-2

DPtech LSW6600 Ethernet Switch Installation Manual V1.3
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3.3.2 Install the switch to a cabinet ........................................................................3-3
3.4 Grounding the switch...............................................................................................3-4
3.5 Connecting interface cable ......................................................................................3-5
3.5.1 Connecting configuration port cable.............................................................. 3-5
3.5.2 Connecting network management port .........................................................3-6
3.5.3 Connecting service port ................................................................................3-6
3.6 Connecting power cable ..........................................................................................3-6
3.6.1 Connecting alternating power cable.............................................................. 3-6
3.6.2 Connecting redundancy power cable............................................................ 3-7
3.7 Verify the Installation ...............................................................................................3-7
4 Starting up the Switch and Upgrading Software..........................................................4-1
4.1 Starting up the Switch at the Initial Boot.................................................................. 4-1
4.1.1 Setting up a Configuration Environment .......................................................4-1
4.1.2 Booting the Switch......................................................................................... 4-5
4.1.3 Starting Procedure ........................................................................................4-6
4.2 Default Login Method for Web.................................................................................4-7
5 Troubleshooting............................................................................................................5-1
5.1 Power system failure ...............................................................................................5-1
5.2 Switch failure troubleshooting..................................................................................5-1
5.2.1 No terminal display........................................................................................ 5-2
5.2.2 Garbled terminal display ...............................................................................5-2

DPtech LSW6600 Ethernet Switch Installation Manual V1.3
Copyright © Hangzhou DPtech Technologies Co. Ltd. 1-1
1Product overview
1.1 Product introduction
DPtech LSW6600 Series switches are new-generation high-density Gigabit
Ethernet switches tailored for data center. Adopting high-performance
hardware architecture and ConPlat software platform, the LSW6600 Series
switch support rich features and data center virtualization technology and
40G uplink ports to satisfy the TOR deployment of next-generation data
center and 40G/100G uplink requirement. LSW6600 Series switches not
only can be used in the access layer of data center, and cloud-computing
network, but also can be used for the Wide Area Networks (WANs),
Metropolitan Area Networks (MANs) as a convergence layer device.
1.2 Product features
The DPtech LSW6600 is available in five models, including:
LSW6602-24GT4XGS
LSW6602-48GT4XGS
LSW6600-48XGS4QXP
LSW6600-8GT24XGS
Table 1-1 Product specifications 1
Item
LSW6602-24GT4XGS
LSW6602-48GT4XGS
Dimension（W×D×
H）
440mm*423mm*44mm
440mm*423mm*44mm
Weight
5.9Kg
6.15Kg
Internal memory
1 Console port, at the front
panel
1 Console port, at the front
panel
CF card
24*10/100/1000Base-T
Ethernet electric port (RJ45)
48*10/100/1000Base-T
Ethernet electric port

DPtech LSW6600 Ethernet Switch Installation Manual V1.3
Copyright © Hangzhou DPtech Technologies Co. Ltd. 1-2
Item
LSW6602-24GT4XGS
LSW6602-48GT4XGS
4*10GBase-R Ethernet optical
port(SFP+)
1*Ethernet management port
MGMT
(RJ45)
4*10GBase-R Ethernet
optical port (SFP+)
1*Ethernet management
port MGMT
Input
voltage
AC
Rated voltage range: 100V～
240V AC, 50/60Hz
Rated voltage range:
100V～240V AC, 50/60Hz
Incoming
current
AC
Rated current: 1.5A
Rated current：1.5A
Power supply slot and
number
2 * AC slots
2* AC slots
Power supply
maximum power
150W
150W
Heat dissipation
system
Use 4 fans to dissipate heat
Use 4 fans to dissipate heat
Working environment
temperature
0℃～45℃
Working altitude
10%～95%
Table 1-2 Product specifications 2
Item
LSW6600-48XGS4QXP
LSW6600-8GT24XGS
Dimension（W×D×H）
424mm*440mm*44mm
424mm*440mm*44mm
Weight
7.5kg
7.8kg
Internal memory
1 Console port, at the front
panel
1 Console port, at the
front panel
CF card
24*10GBase-R Ethernet optical
port(SFP+)
8*10/100/1000Base-T
Ethernet electrical port
(RJ45)
24 个10GBase-R
Ethernet optical
port(SFP+)
Input
voltage
AC
Rated voltage range:100V～
240V AC, 50/60Hz
Rate voltage range:
100V～240V AC,
50/60Hz
DC
Rated voltage range:-48V～
70V DC
None
Incoming
current
AC
Rated current: 1.5A
Rated current: 1.5A
DC
Rated current: 10A
None
Power supply slot and
number
2 * AC or DC slots
2* AC slots

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Item
LSW6600-48XGS4QXP
LSW6600-8GT24XGS
Power supply maximum
power
375W
150W
Heat dissipation system
Use 2 fan frame to dissipate
heat
Use 2 fan frame to
dissipate heat
Working environment
temperature
0℃～45℃
Working altitude
10%～95%
1.3 Front view
1.3.1 LSW6602-24GT4XGS product appearance
1.3.1.1 Front view
Figure 1-1 Front view
(1) (2) (4)(3) (5) (6) (7) (8) (9)
(13)(12)
(10)
(11)
(1)10/100/1000M Ethernet electrical
interface LED (0)
(2)10/100/1000M Ethernet electrical
interface (0)
(3)10GEthernet optical port LED (24)
(4)10G Ethernet optical port (24)
(5)Ethernet management LED
(MGMT)
(6)Ethernet management port (MGMT)
(7) CONSOLE port
(8)System run LED (RUN)
(9)AC power LED (PWR 0)
(10) Slot LED (SLOT1)
(11)Slot LED (SLOT2)
(12)AC power LED (PWR 1)
(13)System Alarm LED (ALM)

DPtech LSW6600 Ethernet Switch Installation Manual V1.3
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Figure 1-2 Front view of LSW6602-24GT4XGS
(1) (2) (4)(3) (5) (6) (7) (8) (9)
(13)(12)
(10)
(11)
LED
Status
Description
(1)10/100/1000M Ethernet
electrical interface
LED(0)( Green)
Steady on
Means the GE0 electrical port is
connected.
Blink
Means the GE0 electrical port is
sending and receiving data.
Steady off
Means the GE 0 is disconnected.
(3) 10GEthernet optical port
LED(24) (Green)
Steady on
Means the 10GE optical port 24 is
connected.
Blink
Means the 10GE optical port 24 is
sending and receiving data.
Steady off
Means the 10GE optical port 24 is
disconnected.
(5)Ethernet electrical interface
LED MGMT(Green)
Steady on
Means the management interface
MGMT is connected.
Blink
Means the management port MGMT is
sending and receiving data.
Steady off
Means the management port MGMT is
disconnected.
(8)System run
LED(RUN)( Green)
Steady on
Means the system is working normally
and is in active status.
Blink (1Hz)
Means the system is working normally
and is in backup status.
Blink (8Hz)
Means the system is initiating.
Steady off
Means the system isn’t initiating.
(9)Power LED(PWR 0)( Green)
Steady on
Means power supply 0 is working
normally.
Steady off
Means power supply 0 isn’t power-up
or the power supply isn’t working. .
(10)Slot LED(SLOT1) (Green)
Steady off
Means the slot 1 isn’t inserted
recognizable module or the inserted
module is failure.
Steady on
Means the insert module 1 is working
normally.
(11Slot LED(SLOT2) (Green)
Steady off
Means the insert module 2 isn’t
inserted recognizable module or the
inserted module is failure.

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LED
Status
Description
Steady on
Means the inserted module 2 is
working normally.
(12)Power LED(PWR 1)
(Green)
Steady on
Means the power supply 1 is working
normally.
Steady off
Means the power supply 1 isn’t
power-up or the power supply isn’t
working.
(13) System alarm LED(ALM)
(Green)
Fast Blink
(8Hz)
Means the system isn’t working
normally.
Steady off
Means the system isn’t warning.
Note: you can see 0-23 10G Ethernet optical port, 10/100/1000M Ethernet
electrical port 24-31 on the front panel and status LEDs on the front panel.
1.3.1.2 Rear view
Figure 1-3 Rear view of LSW6602-24GT4XGS
(1) (2)
(3)(4)
Table 1-3 Rear view of LSW6602-24GT4XGS
(1) AC power socket
(2) AC power socket
(3) Grounding terminal
(4) SLOT(2 slots can be inserted )

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1.3.2 LSW6602-48GT4XGS product appearance
1. Front view
(1) (2)
(12)
(13)
(3) (4) (5) (6)(7)
(11)
(10)
(8)
(9)
(1)10/100/1000M Ethernet electrical
interface LED (0)
(2)10/100/1000M Ethernet electrical
interface (0)
(3) Ethernet management port LED
MGMT
(4) Ethernet management port MGMT
(5) CONSOLE port
(6) System run LED(RUN)
(7) AC power LED(PWR 0)
(8) Slot LED(SLOT1)
(9) Slot LED(SLOT2)
(10) AC power LED(PWR 1)
(11)System alarm LED(ALM)
(12) 10G Ethernet optical port (48)
(13)10GEthernet optical port LED(48)
Figure 1-4 LSW6602-48GT4XGS front view
(1)
(13)
(3) (6)(7)
(11)
(10)
(8)
(9)
LED
Status
Description
(1)10/100/1000M Ethernet
electrical interface LED(0)(
green)
Steady on
Means the GE electrical port 0 is
connected.
Blink
Means the GE electrical port 0 is sending
and receiving data.
Steady off
Means the GE electrical port 0 is
disconnected.
(3)Ethernet electrical
interface LED
Steady on
Means the management port (MGMTP) is
sending and receiving data.

DPtech LSW6600 Ethernet Switch Installation Manual V1.3
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LED
Status
Description
MGMT(Green)
Blink
Means the management port (MGMT) is
sending and receiving data.
Steady off
Means the management port (MGMT) is
disconnected.
(6)System run
LED(RUN)(Green)
Steady on
Means the system is working normally and
is in active status.
Blink (1Hz)
Means the system is working normally and
is in backup status.
Blink (8Hz)
Means the system is initiating.
Steady off
Means the system isn’t initiating.
(7)Power LED(PWR
0)(Green)
Steady on
Means the power supply 0 is working
normally.
Steady off
Means the power supply 0 isn’t power-up
or the power supply isn’t working.
(8)Slot LED(SLOT1)
(Green)
Steady off
Means the slot 1 isn’t inserted
recognizable module or the inserted
module is failure.
Steady on
Means the insert module 1 is working
normally.
(9)Slot LED(SLOT2)
(Green)
Steady off
Means the insert module 2 isn’t inserted
recognizable module or the inserted
module is failure.
Steady on
Means the inserted module 2 is working
normally.
(10)Power LED(PWR 1)
(Green)
Steady on
Means the slot 1 isn’t inserted
recognizable module or the inserted
module is failure.
Steady off
Means the insert module 1 is working
normally.
(11)System alarm
LED(ALM) (Red)
Fast blink
(8Hz)
Means the system isn’t working normally.
Steady off
Means the system isn’t warning.
(13)10G Ethernet optical
port LED(48) (Green)
Steady on
Means 10GE optical port 48 is connected.
Blink
Means 10GE optical port 48 is sending
and receiving data.
Steady off
Means 10GE optical port 48 is
disconnected.
Note: you can see 0-47 10G Ethernet optical port, 10/100/1000M Ethernet
electrical port 48-51 on the front panel and status LEDs on the front panel.

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2. Rear view
Figure 1-5 Rear view of LSW6602-48GT4XGS
(1) (2)
(3)(4)
(1) AC power socket
(2) AC power socket
(3) Grounding terminal
(4) SLOT(2 slots can be inserted)
1.3.3 LSW6600-8GT24XGS product appearance
1.3.3.1 Front view
(1)(2) (4)(3) (5) (6) (7) (8) (9)
(11)(10)
(1)10G Ethernet optical port(0)
(2)10G Ethernet optical port LED(0)
(3)10/100/1000M Ethernet electrical
interface LED(24)
(4)10/100/1000M Ethernet electrical
interface (24)
(5)Ethernet management port MGMT
(6) USB port
(7)CONSOLE port
(8) System run LED(RUN)
(9) AC power LED(PWR 0)
(10) AC power LED(PWR 1)
(11)System alarm LED(ALM)

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Figure 1-6 Front view of LSW6600-8GT24XGS
(2) (3) (8) (9)
(11)(10)
LED
Status
Description
(2) 10G Ethernet optical port
LED(0) (Green)
Steady on
Means the 10GE optical port 0 is
connected.
Blink
Means the 10GE optical port 0 is
sending and receiving data.
Steady off
Means the 10GE optical port 0 is
disconnected.
(3)10/100/1000MEthernet
electrical interface
LED(24)( Green)
Steady on
Means the electrical port 24 is
connected.
Blink
Means the electrical port is sending
and receiving data.
Steady off
Means the electrical port 24 is
disconnected.
(8)System run
LED(RUN)( Green)
Steady on
Means the system is working normally
and is in active status.
Blink (1Hz)
Means the system is working normally
and is in backup status.
Blink (8Hz)
Means the system is initiating.
Steady off
Means the system isn’t initiating.
(9)Power LED(PWR
0)( Green)
Steady on
Means power supply 0 is working
normally.
Steady off
Means power supply 0 isn’t power-up
or the power supply isn’t working. .
(10)Power LED(PWR 1)
(Green)
Steady on
Means power supply 1 is working
normally.
Steady off
Means power supply 1 isn’t power-up
or the power supply isn’t working. .
(11)System alarm LED(ALM)
(Red)
Fast blink
(8Hz)
Means the system isn’t working.
Steady off
Means the system isn’t warning.
Note: you can see 0-23 10G Ethernet optical port, 10/100/1000M Ethernet
electrical port 24-31 on the front panel and status LEDs on the front panel.

DPtech LSW6600 Ethernet Switch Installation Manual V1.3
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1.3.3.2 Rear view
Figure 1-7 Rear view of LSW6600-8GT24XGS
(1) (2)
(3)
(1)AAC power socket
(2) AC power socket
(3) Grounding terminal
1.3.4 LSW6600-48XGS4QXP product appearance
1.3.4.1 Front view
(1)
(8) (7) (6)(5)
(4)(3)(2)
(1) 10G Ethernet optical port(0)
(2) 40G Ethernet optical port (0)
(3) System run LED(RUN)
(4) AC power LED(PWR 0)
(5) Alarm LED(ALM）
(6) AC power LED(PWR 1)
(7) 40G Ethernet optical port LED(0)
(8) 10G Ethernet optical port LED(0)

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Figure 1-8 LSW6600-48XGS4QXP front view
(8) (7) (6)(5)
(4)(3)
LED
Status
Description
(3)System run
LED(RUN)(Green)
Steady
on
Means the system is working normally and is
in active status.
Blink
(1Hz)
Means the system is working normally and is
in backup status.
Blink
(8Hz)
Means the system is initiating.
Steady
off
Means the system isn’t initiating.
(4)Power LED(PWR
0)(Green)
Steady
on
Means power supply 0 is working normally.
Steady
off
Means power supply 0 isn’t power-up or the
power supply isn’t working. .
(5) System alarm
LED(ALM) (Red)
Fast blink
(8Hz)
Means the system isn’t working.
Steady
off
Means the system isn’t warning.
(6)Power LED(PWR
1)(Green)
Steady
on
Means power supply 1 is working normally.
Steady
off
Means power supply 1 isn’t power-up or the
power supply isn’t working. .
(7)40G Ethernet optical
interface LED(0)(Green)
Steady
on
Means 40G optical port 0 is connected.
Blink
Means 40G optical port 0 is sending and
receiving data.
Steady
off
Means 40G optical port 0 is disconnected.
(8)10G Ethernet optical
interface LED(0)(Green)
Steady
on
Means 10G optical port 0 is connected.
Blink
Means 10G optical port 0 is sending and
receiving data.
Steady
off
Means 10G optical port 0 is disconnected.

DPtech LSW6600 Ethernet Switch Installation Manual V1.3
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1.3.4.2 Rear view
Figure 1-9 Rear view of LSW6600-48XGS4QXP
（1） （2） （3） （4） （5）（6）（7）
（8）
(1) 10/100/1000M Ethernet electrical port
(2) USB port
(3) CONSOLE port
(4) Fan slot
(5) Fan slot
(6)Power socket(PWR0)
(7)Power socket (PWR1)
(8)Grounding terminal
1.4 Port introduction
1.4.1 Console port
LSW6600 series Ethernet switch has an RS232 asynchronous serial port
(CON) that can be used to connect computer terminals and can be used to
debug, configure, maintain, manage the system and load a software version.
Table 1-4 describes the attributes of Console port.
Table 1-4 Console port attributes
Properties
Description
Connector type
RJ45
Interface standard
RS232
Baud rate
9600bps～115200bps Default is 9600bps
Transmission distance
≤15m
Service
Connection to an ASCII terminal.
Connection to a serial port on a local PC to run
terminal emulation program on the PC
Command line interface.

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1.4.2 10/100/1000Base-T Ethernet electrical interface
1.4.2.1 Attributes of GbEthernet electrical interface
Table 1-5 Attributes of GbEthernet electrical interface
Properties
Description
Connector
RJ45
Interface type
MDI/MDIX auto-negotiation
Support fame
Ethernet_II
Ethernet_SNAP
Speed and mode
10Mbps, full/half duplex
100Mbps, full/half duplex
1000Mbps, full/half duplex
Medium and transmission distance
Support 100m transmission distance
Interface standard
IEEE 802.3i,802.3u,802.3ab
1.4.2.2 Ethernet electrical interface (RJ45 connector)
LSW6600 series 10 /100/1000M Ethernet electrical interfaces use category 5 or
above category 5 twisted-pair cable to connect the Ethernet. Ethernet electrical
interface adopts RJ45 connector and supports MDI/MDIX auto-negotiation.
You can use twisted-pair category 5 and RJ45 connector to make network
cable.
Figure 1-10 RJ45 connector
1.4.2.3 Ethernet electrical interface cable
Ethernet electrical interface adopts category 5 twisted-pair cable to connect
Ethernet, as shown in Figure 1-11.

DPtech LSW6600 Ethernet Switch Installation Manual V1.3
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Figure 1-11 Diagram for Ethernet cable
Because of different usage, Ethernet cable can be classified as standard
cable (straight cable) and cross cable:
Standard cable: also is called straight cable. The sequences of the twisted
pairs crimped in the RJ45 connectors at both ends are the same. It connects
a terminal device (PC or router) to a HUB or LAN Switch. We provide you the
standard cable along with the device.
Crossover cable: the sequences of the twisted pairs crimped in the RJ-45
connectors at both ends are different. It connects a terminal device (PC or
router) to another terminal device (PC or router). You make crossover cables
by yourself.
1.4.3 SFP port
1.4.3.1 Attributes of Ethernet optical port
Table 1-6 Gigabit Ethernet optical port
Properties
Description
Connector type
SFP/LC
Interface
standard
802.3 802.3u and 802.3ab
Transmi
t power
Type
Short
haul
(850nm)
Optical
interface
module
Long
haul
(1310n
m)
Optical
interface
module
Long haul
(1310nm)
Optical
interface
module
Long haul
(1550nm)
Optical
interface
module
Extra-long
distance
(1550nm)
Optical
interface
module
Min
-9.5dBm
-9dBm
-2dBm
-4dBm
-2dBm
Max
-3dBm
-3dBm
3dBm
1dBm
3dBm
Receiver
sensitivity
-18dBm
-20dBm
-23dBm
-20dBm
-23dBm
Central
wavelength
850nm
1310nm
1310nm
1550nm
1550nm

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Properties
Description
Optical fiber
62.5/125
μm
multimo
de
fibers
9/125μ
m
single-m
ode
fiber
9/125μm
single-mod
e
fiber
9/125μm
single-mode
fiber
9/125μm
single-mode
fiber
Max
transmission
distance
0.55km
15km
40km
40km
80km
Operating mode
1000Mbps full-duplex mode
Table 1-7 Attributes of SFP+ 10GEEthernet optical port
Properties
Description
Connector type
SFP+/LC
Supported physical layer type
10GBASE-R
Interface rate
LAN PHY mode: 9.95Gbps-10.5 Gbps
Transmission
power
Type
Short-haul
multimode
Medium-haul
multimode
Long-haul
multimode
Min
-5dBm
0dBm
-1dBm
Max
-1dBm
0.5dBm
2dBm
Receiver sensitivity
-11.1dBm
-11dBm
-14.1dBm
Central wavelength
850nm
1310nm
1550nm
Optical fiber
62.5/125μm
multi-mode fiber
9/125μm
single-mode
fiber
9/125μm
single-mode
fiber
Max transmission
distance
300m
10km
40km
Operating mode
1000Mbps, full-duplex mode
Table 1-8 Attributes of QSFP+ 40GE Ethernet optical port
Properties
Description
Connector type
MPO
Supported physical
layer type
QSFP+
Central wavelength
850nm

DPtech LSW6600 Ethernet Switch Installation Manual V1.3
Copyright © Hangzhou DPtech Technologies Co. Ltd. 1-16
Properties
Description
Fiber Mode
MMF
Interface standard
Output power
RX Sensitivity
Light saturation
-8.0～+2.4
≤-5.4(each lane)
+3.0
Central wavelength
850nm
Central wavelength
50/125μm
Mode
bandwidth(MHz*km）
2000
4700
Max transmission
distance
100M
150M
Working mode
1000Mbps, full-duplex mode
1.4.3.2 Optical connector
Optical fiber connector (also called union joint), which is a necessary passive
component in optical fiber connector and also is the removable connector in
optical channel. It is either convenient for user to debug and maintain the
optical system, or make optical system switchover more flexible.
There are several types of optical fiber connectors:
LC: A compact optical connector developed by Lucent
SC: A square optical connector
FC: A round optical connector with screw threads
ST: A round plug-in optical connector
MT-RJ: A square optical transceiver
At present, Ethernet optical interface only supports LC connector.