DCN DCRS-5960-52T User manual

DCRS-5960 Series Installation Guide Content
1
Content
CHAPTER 1 INTRODUCTION....................................................1-1
1.1 OVERVIEW..........................................................................................1-1
1.2 INTRODUCTION TO PRODUCT................................................................1-1
1.2.1 Product Overview .................................................................................1-1
1.2.2 Features and Benefits ..........................................................................1-2
1.3 PHYSICAL SPECIFICATIONS..................................................................1-3
1.4 DESCRIPTION OF HARDWARE ...............................................................1-5
1.4.1 Front Panel............................................................................................1-5
1.4.2 Back Panel.............................................................................................1-6
1.4.3 DC Power/PoE Power Input .................................................................1-7
1.4.4 Status LEDs...........................................................................................1-8
1.4.5 Interface Description of Front Panel................................................. 1-11
1.4.6 MRS-2XFP/MRS-2SFP+ Extended Module Description ...................1-12
CHAPTER 2 HARDWARE INSTALLATION...............................2-1
2.1 INSTALLATION NOTICE.........................................................................2-1
2.1.1 Environmental Requirements ..............................................................2-1
2.1.2 Installation Notice.................................................................................2-4
2.1.3 Security Warnings ................................................................................2-4
2.2 INSTALLATION PREPARATION...............................................................2-5
2.2.1 Verify the Package Contents................................................................2-5
2.2.2 Required Tools and Utilities.................................................................2-5
2.3 INSTALLATION GUIDE ..........................................................................2-5
2.3.1 Installing Switch....................................................................................2-5
2.3.2 Connecting Console.............................................................................2-6
2.3.3 SFP Transceiver Installation ................................................................2-7
2.3.4 MRS-2XFP Extended Module Installation ...........................................2-7
2.3.5 MRS-2SFP+ extended module Installation .........................................2-8
2.3.6 MRS-2GB Extended module Installation.............................................2-8
2.3.7 Copper Cable/Fiber Cable Connection ...............................................2-9
2.3.8 AC Power Supply Connection ...........................................................2-10
2.3.9 DC Power Supply Connection ...........................................................2-10
2.3.10 PoE Power Supply Connection........................................................ 2-11

DCRS-5960 Series Installation Guide Chapter 1 Introduction
1-1
Chapter 1 Introduction
1.1 Overview
DCRS-5960 series switches are ethernet switches. DCRS-5960 series switches are
intelligent network management switch used by the network environment which needs the
high performance, the bigger port density and the convenient installation.
DCRS-5960 series switches include the types in the following:
Name Type Description
DCRS-5960 series
DCRS-5960-52T(R2) 44 copper ports＋4 Combo ports＋2
10Gb extended cards
DCRS-5960-52T-DC(R2) 44 copper ports＋4 Combo ports＋2
10Gb extended cards ＋DC power
DCRS-5960-52T-PoE(R2) 44 copper ports＋4 Combo ports＋2
10Gb extended cards ＋PoE
DCRS-5960-28T(R2) 20 copper ports＋4 Combo ports＋2
10Gb extended cards
DCRS-5960-28T-DC(R2) 20 copper ports＋4 Combo ports＋2
10Gb extended cards ＋DC power
DCRS-5960-28T-PoE(R2) 20 copper ports＋4 Combo ports＋2
10Gb extended cards ＋PoE
DCRS-5960-28F-DC 12 fiber ports＋12 Combo ports＋2
extended cards ＋DC power
DCRS-5960-52F-DC 44 fiber ports ＋4 Combo ports ＋2
extended cards ＋DC power
1.2 Introduction to Product
1.2.1 Product Overview
DCRS-5960 series switches include DCRS-5960-52T(R2), DCRS-5960-52T-DC(R2),
DCRS-5960-52T-PoE(R2), DCRS-5960-28T(R2), DCRS-5960-28T-DC(R2),
DCRS-5960-28T-PoE(R2), DCRS-5960-28F-DC and DCRS-5960-52F-DC switches.
DCRS-5960-52T-DC(R2) and DCRS-5960-52T-PoE(R2) supply the consistent signal

DCRS-5960 Series Installation Guide Chapter 1 Introduction
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interface with DCRS-5960-52T(R2), the difference is DCRS-5960-52T-DC(R2)
implements 48V DC input, DCRS-5960-52T-PoE(R2) supplies 48 ports for exporting PoE
power supply, and the max output power of each port is 15W. DCRS-5960-28T-DC(R2)
and DCRS-5960-28T-PoE(R2) supply the consistent signal interface with
DCRS-5960-28T(R2), the difference is DCRS-5960-28T-DC(R2) implements 48V DC
input, DCRS-5960-28T-PoE(R2) supplies 24 ports for exporting PoE power supply, and
the max output power of each port is 15W. Front panel of DCRS-5960-28F-DC supplies
12 1000M-fiber-ports and 12 Combo ports. Front panel of DCRS-5960-52F-DC supplies
44 1000M-fiber-ports and 4 Combo ports. DCRS-5960-28-DC and DCRS-5960-52F-DC,
can input 48V DC power.
1.2.2 Features and Benefits
Various Interfaces
DCRS-5960-52T(R2) / DCRS-5960-52T-DC(R2) / DCRS-5960-52T-PoE(R2)
provides 44 fixed 1000Mb copper ports, 4 1000Mb COMBO ports (1000Mb fiber SFP
ports/1000Mb copper ports) and 2 10Gb slots with 2 ports.
DCRS-5960-28T(R2) / DCRS-5960-28T-DC(R2) / DCRS-5960-28T-PoE(R2)
provides 20 fixed 1000Mb copper ports, 4 1000Mb COMBO ports (1000Mb fiber SFP
ports/1000Mb copper ports) and 2 10Gb slots with 2 ports.
DCRS-5960-28F-DC provides 12 1000Mb fiber ports, 12 1000Mb Combo ports
(1000Mb fiber SFP ports/1000Mb copper ports) and 2 slots with the extended cards.
DCRS-5960-52F-DC provides 44 fixed 1000Mb fiber ports, 4 1000Mb Combo ports
(1000Mb fiber SFP ports/1000Mb copper ports) and 2 slots with the extended cards.
Secure Power Supply
DCRS-5960 series switches provide DC/AC power backup, support 220V AC input,
48V DC input or 220V AC, 48V DC input simultaneously.
Support 10Gb Ethernet
10Gb Ethernet which adopts full-duplex technology instead of low-speed, half-duplex
CSMA/CD protocol, is a big leap in the evolution of Ethernet. 10Gb Ethernet can be
deployed in star or ring topologies. DCRS-5960 series switches provide broad bandwidth
and powerful processing capacity. It is suitable for metropolitan networks and wide area
networks. Using DCRS-5960 series switches, users can simplify network structures and
reduce cost of network construction.
Networking Protocols
DCRS-5960 series switches support 802.1d/w/s, 802.1Q, 802.1p, 802.3ad, 802.3x,
GVRP, DHCP and SNTP etc. The switches also support the multicast protocols such as
IGMP, DVMRP and PIM. Moreover, DCRS-5960 series switches support RIPv1/2, OSPF,
BGP and IPv6 protocols. All these protocols supported enable DCRS-5960 series

DCRS-5960 Series Installation Guide Chapter 1 Introduction
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switches to meet the requirements of complex network constructions.
ACL
DCRS-5960 series switches support comprehensively ACL policies. The traffic can
be classified by source/destination IP addresses, source/destination MAC addresses, IP
protocols, TCP/UDP, IP precedence, time ranges and ToS. And various policies can be
conducted to forward the traffic. By implementing ACL policies, users can filter the virus
packets such as “Worm.Blaster”, “Worm.Sasser” and “Red Code” etc. DCRS-5960 series
switch also support IEEE802.1x port based access authentication, which can be deployed
with RADIUS, to ensure the port level security and block illegal users.
QoS
DCRS-5960 series switches fully support DiffServ Module. Users can specify a queue
bandwidth on each port. WRR/SP/SWRR scheduling is also supported. DCRS-5960
series support the port trust. Users can configure trusted CoS, DSCP, IP precedence and
port priority. User can also modify packet’s DSCP and COS values. The traffic can be
classified by port, VLAN, DSCP, IP precedence and ACL table. User can also modify
packet’s DSCP and IP precedence values. Users can specify different bandwidths for
voice/data/video to customize different qualities of service.
3D-SMP Ready
DCRS-5960 series are up to the mustard of Self-defending security region
management strategy according to Digital China Netware. It is supported interaction with
some security system such as firewall, IDS, etc. It can defense the virus and aggress
effectively from the extranet and internet. Thus enhance the security and stability of the
network-wide.
Perfect Web Management.
DCRS-5960 series support SNMP, In-band and Out-of band Management, CLI and
WEB interface and RMON. It can mail the correlative sensitive information to the
administrator abide by SMTP protocol. DCRS-5960 series support SSH protocol, ensure
the configuration management security of the switch. It adopts the Digital China
centralized web management system ‘LinkManager’ for unified management expedienty
and compactly.
1.3 Physical Specifications
Item DCRS-5960-28
F-DC
DCRS-5960-52
F-DC
DCRS-5960-5
2T(R2)/
DCRS-5960-5
2T-DC(R2)
DCRS-5960-5
2T-PoE(R2)
DCRS-5960-28
T(R2)/
DCRS-5960-28
T-DC(R2)
DCRS-5960-2
8T-PoE(R2)

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Dimension
(W * H * D)
（mm）
440×324×44 440×324×44 440×324×44 440×324×44 440×324×44 440 ×324 ×
44
Weight <6kg <6kg <6kg <6kg <6kg <6kg
Fixed ports 12 SFP fiber
ports
12 1000Mb
Combo ports
2 interfaces with
extended card
44 SFP fiber
ports
4 1000Mb
Combo ports
2 interfaces with
extended card
44
100/1000Base-
TX auto
negotiation
ethernet ports
4 1000Mb
Combo ports
2 10Gb
interfaces with
extended card
44
100/1000Base-
TX auto
negotiation
ethernet ports
4 1000Mb
Combo ports
2 10Gb
interfaces with
extended card
20
100/1000Base-
TX auto
negotiation
ethernet ports
4 1000Mb
Combo ports
2 10Gb
interfaces with
extended card
20
100/1000Bas
e-TX auto
negotiation
ethernet ports
4 1000Mb
Combo ports
2 10Gb
interfaces
with extended
card
Management
ports
1 Console port
System
power
DCRS-5960 series support AC/DC power input:
zAC input:
The rating voltage range: 100V~240V AC; 50/60HZ
The max voltage range: 90V~264V AC; 47HZ～63HZ
zDC input:
48V DC input, -48V～-60V/DC; 2.5A
Output
power supply
of PoE
Do not support Do not support Do not support Support Do not support Support
The max
Power
Consumption
35W 65W 65W 65W (PoE
uses external
power supply)
35W 35W (PoE uses
external power
supply)
Fan Support
automatic
timing
Support
automatic
timing
Support
automatic
timing
Support
automatic
timing
Support
automatic
timing
Support
automatic timing
Operating
Temperature
0℃~50℃0℃~50℃0℃~50℃0℃~50℃0℃~50℃0℃~50℃
Relative
Humidity
10％~90％10％~90％10％~90％10％~90％10％~90％10％~90％
Table 1-1 Physical Specifications

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1.4 Description of Hardware
1.4.1 Front Panel
DCRS-5960-28T(R2) / DCRS-5960-28T-DC(R2) / DCRS-5960-28T-PoE(R2)
Ethernet switches provide 20 100/1000Base-TX auto negotiation ehternet ports, 4
1000Mb Combo ports, 6 function LEDs and 1 Console port.
Fig 1-1 Front Panel of DCRS-5960-28T(R2)
Fig 1-2 Front Panel of DCRS-5960-28T-DC(R2)
Fig 1-3 Front Panel of DCRS-5960-28T-PoE(R2)
DCRS-5960-52T(R2) / DCRS-5960-52T-DC(R2) / DCRS-5960-52T-PoE(R2)
Ethernet switches provide 44 100/1000Base-TX auto negotiation ehternet ports, 4
1000Mb Combo ports, 6 function LEDs and 1 Console port.
Fig 1-4 Front Panel of DCRS-5960-52T(R2)
Fig 1-5 Front Panel of DCRS-5960-52T-DC(R2)

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Fig 1-6 Front Panel of DCRS-5960-52T-PoE(R2)
DCRS-5960-28F-DC Ethernet switch provides 12 1000Mb fiber ports, 12 1000Mb
Combo ports, 8 function LEDs and 1 Console port.
Fig 1-7 Front Panel of DCRS-5960-28F-DC
DCRS-5960-52F-DC ehternet switch provides 44 1000Mb fiber ports, 4 1000Mb
Combo ports, 8 function LEDs and 1 Console port.
Fig 1-8 Front Panel of DCRS-5960-52F-DC
1.4.2 Back Panel
DCRS-5960-28T(R2) / DCRS-5960-28T-DC(R2) / DCRS-5960-28T-PoE(R2) supplies
2 plug-in interfaces, 1 -48V DC input power interface, 1 input power interface of PoE and 1
220V input power interface.
Fig 1-9 Back Panel of DCRS-5960-28T(R2)
Fig 1-10 Back Panel of DCRS-5960-28T-DC(R2)
Fig 1-11 Back Panel of DCRS-5960-28T-PoE(R2)
DCRS-5960-52T(R2) / DCRS-5960-52T-DC(R2) / DCRS-5960-52T-PoE(R2) supplies

DCRS-5960 Series Installation Guide Chapter 1 Introduction
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2 plug-in interfaces, 1 -48V DC input power interface, 1 input power interface of PoE and 1
220V input power interface.
Fig 1-12 Back Panel of DCRS-5960-52T(R2)
Fig 1-13 Back Panel of DCRS-5960-52T-DC(R2)
Fig 1-14 Back Panel of DCRS-5960-52T-PoE(R2)
DCRS-5960-28F-DC supplies 2 interfaces with the extended card, 1 interface with
-48V DC power input and 1 interface with 220V AC power input.
Fig 1-15 Back Panel of DCRS-5960-28F-DC
Back Panel of DCRS-5960-52F-DC is same with DCRS-5960-28F-DC, it supplies 2
interfaces for the extended card, 1 interface with -48V DC power input and 1 interface with
220V AC power input.
Fig 1-16 Back Panel of DCRS-5960-52F-DC
1.4.3 DC Power/PoE Power Input
DCRS-5960 series support AC/DC input power backup and PoE power output.
pin-outs signal of DC power and PoE power are distributed as below:

DCRS-5960 Series Installation Guide Chapter 1 Introduction
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Fig 1-17 Pin-outs Distribution of DC Input for DCRS-5960-28T-DC(R2) /
DCRS-5960-52T-DC(R2) / DCRS-5960-28F-DC / DCRS-5960-52F-DC
Pin1 Pin2 Pin3
AC Socket
Pin1 Pin2 Pin3 Pin4 Pin5
DC Socket PoE Socket
Fig 1-18 Pin-outs Distribution of DC Input and PoE Power Input for
DCRS-5960-28T-PoE(R2) / DCRS-5960-52T-PoE(R2)
There are 3 pin-outs for DC socket:
PIN1: GND Ground connection
PIN2: -48V DC power cathode input
PIN3: 0V DC power positive electrode input
There are 5 pin-outs for PoE socket:
PIN1: GND Ground connection
PIN2: -52V DC power cathode input
PIN3: -52V DC power cathode input
PIN4: 0V DC power positive electrode input
PIN5: 0V DC power positive electrode input
1.4.4 Status LEDs
LEDs of DCRS-5960-28T(R2) / DCRS-5960-28T-DC(R2) / DCRS-5960-28T-PoE(R2)
/ DCRS-5960-52T(R2) / DCRS-5960-52T-DC(R2) / DCRS-5960-52T-PoE(R2) show the

DCRS-5960 Series Installation Guide Chapter 1 Introduction
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corresponding state. Mainboard LEDs include two parts, one is 24/48 1000M interface
LEDs, they show each port state at RJ45 plug-in, each port corresponds a LED with
double colors.
Table 1-2 Port LEDs
LED Status Description
Red
On On means ports are in the link state
of 100M or export PoE power
Off Off means ports are not in the link
state of 100M or do not export PoE
power
Blink Send or receive the data
Green
On On means ports are in the link state
of 1000M
Off Off means ports are not in the link
state of 1000M
Blink Send or receive the data
The other is system LEDs, they are used to show the work status of the system at the
right of front panel.
Table 1-3 DCRS-5960-28T(R2) / DCRS-5960-28T-DC(R2) /
DCRS-5960-28T-PoE(R2) / DCRS-5960-52T(R2) / DCRS-5960-52T-DC(R2) /
DCRS-5960-52T-PoE(R2) System LEDs
Panel
Symbol Status Description
PWR On (Green) Power is operating normally
Off Power is abnormally
DIAG On (Green, blink) System is loading
On (Green) System is operating normally
ALM
On (Green) System is malfunctioning
Off System is operating normally
RPS
On (Green) System is using DC power
Off System does not use DC power
M1
On (Green) M1 is in place
Off M1 is not in place
M2
On (Green) M2 is in place
Off M2 is not in place

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LEDs of DCRS-5960-28F-DC / DCRS-5960-52F-DC show the corresponding state.
There are two kinds of LEDs on front panel, one of its kinds is fiber/copper LEDs of port
transceiver, they are at RJ45 linker or SFP linker. Each port of RJ45 linker corresponds a
LED with double colors, each port of SFP linker corresponds two LEDs, detailed
descriptions are shown in the following tables.
Table 1-4 RJ45 Port LEDs
LED Status Description
Green
On It means port is at link state
Off It means port is not at link state
Blink Send or receive the data
Table 1-5 SFP Port LEDs
LED Status Description
Left LED
On SFP port is at link state
Off SFP port is not at link state
Blink There is no this state
Right LED
On There is no this state
Off No data is received or sent
Blink Send or receive the data
Note: For DCRS-5960-52F-DC, there are four LEDs with the number from the buttom
up on the left of RJ45 linker, the number is from 1 to 4, and they correspond four ports of
RJ45 linker respectively.
The other of its kind is system LEDs, system LEDs of DCRS-5960-28F-DC are at the
right of the front panel. For DCRS-5960-52F-DC, there are corresponding name for
system LEDs with 2*4 array. They are used to show the work stateand the port state of the
extended card.
Table 1-6 DCRS-5960-28F-DC / DCRS-5960-52F-DC System LEDs
Panel
Symbol Status Description
PWR On (Green) Power is operating normally
Off Power is abnormally
DIAG On (Green, blink) System is loading
On (Green) System is operating normally
ALM
On (Green) System is malfunctioning

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1-11
Off System is operating normally
DC
On (Green) System is using DC power
Off System does not use DC power
M1-1
On (Green) Port1 of M1 is at link state
On (Green,
Blink)
Port1 of M1 is receiving or sending
the data
Off Port1 of M1 is not at link state
M1-2
On (Green) Port2 of M1 is at link state
On (Green,
Blink)
Port2 of M1 is receiving or sending
the data
Off Port2 of M1 is not at link state
On (Orange) Port2 of M1 is not at link state, but
M1 is in place
M2-1
On (Green) Port1 of M2 is at link state
On (Green,
Blink)
Port1 of M2 is receiving or sending
the data
Off Port1 of M2 is not at link state
M2-2
On (Green) Port2 of M2 is at link state
On (Green,
Blink)
Port2 of M2 is receiving or sending
the data
Off Port2 of M2 is not at link state
On (Orange) Port2 of M2 is not at link state, but
M2 is in place
1.4.5 Interface Description of Front Panel
DCRS-5960 series switches provide RJ-45 1000Mb copper port and the interface of
SFP 1000Mb fiber transceivers.
Table 1-7 interface descriptions
Interface mode Spec
RJ-45 port •10/100/1000Mbps auto negotiation
•MDI/MDI-X cable mode auto negotiation
•5 kinds of UTP: 100 m

DCRS-5960 Series Installation Guide Chapter 1 Introduction
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SFP •SFP-SX-L transceiver
1000Base-SX SFP(850nm,MMF,550m)
•SFP-LX-L transceiver
1000Base-LX SFP(1310nm, SMF, 10km or
MMF, 550m)
•SFP-LX-20-L transcever
1310nm lightwave, 9/125um single mode
fiber: 20km
•SFP-LX-40 transceiver
9/125um single mode fiber: 40km
•SFP-LH-70-L transceiver
9/125um single mode fiber: 70km
•SFP-LH-120-L transceiver
9/125um single mode fiber: 120km
SFP-GT •SFP-GT Module:
1000Base-T SFP interface card module,
RJ-45 interface
1.4.6 MRS-2XFP/MRS-2SFP+ Extended Module Description
DCRS-5960 series provides 2 slots to install 2 MRS-2XFP, MRS-2SFP+ or MRS-2GB
extended modules.
Extended module model DCRS-5960 series switch Extended module description
MRS-2XFP Support 10Gb XFP extended module
with double ports
MRS-2SFP+ Support 10Gb / 1Gb 10Gb/1Gb compatible
module with double ports
MRS-2GB Support 1Gb module with double
ports
Take MRS-2XFP as a example, extended module diagram is shown as follows:

DCRS-5960 Series Installation Guide Chapter 1 Introduction
1-13
Figure 1-19 MRS-2XFP structure diagram
Each extended module’s panel diagram is shown as follows:
Figure 1-20 panel diagram of MRS-2XFP
Figure 1-21 panel diagram of MRS-2SFP+
Figure 1-22 panel diagram of MRS-2GB
Back panel diagrams of switch with extended modules are shown as follows:
Figure 1-23 The back panel with extended modules for DCRS-5960-28T(R2) /
DCRS-5960-52T(R2)
Figure 1-24 The back panel with extended modules for DCRS-5960-28T-DC(R2) /
DCRS-5960-52T-DC(R2)
Figure 1-25 The back panel with extended modules for DCRS-5960-28T-PoE(R2) /
DCRS-5960-52T-PoE(R2)

DCRS-5960 Series Installation Guide Chapter 1 Introduction
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Figure 1-26 The back panel with extended modules for DCRS-5960-28F-DC /
DCRS-5960-52F-DC
Extended module‘s LED descriptions are in the following:
Table 1-8 LED descriptions of 10Gb extended module
Table 1-9 XFP, SFP+ transceivers descriptions of DCRS-5960 series
Spec
XFP
•XFP-SR transceiver
10GBase-SR XFP multi-mode fiber
transceiver (850nm，62.5μm MMF 32m，50
μm 500MHz/km MMF 85m ，50 μm
2000MHz/km MMF 300m)
•XFP-LR transceiver
10GBase-LR XFP single-mode fiber
transceiver (1310nm,SMF,10km)
•XFP-ER transceiver
1550nm SMF, 40km
•XFP-ER-70 transceiver
1550nm SMF, 70km
SFP+
zSFP+-LR transceiver
10GBase-LR SFP+(1310nm, SMF, 10km)
zSFP+-SR transceiver
10GBase-SR SFP+(850nm, 62.5μm MMF
32m, 50μm 500MHz/km MMF 85m, 50μm
2000MHz/km MMF 300m)
LED Status Description
Link/Activity
Green Ports are at link state with 10G
Blink(Green) Ports are at active state with 10G
Off No link or the link is failure

DCRS-5960 Series Installation Guide Chapter 2 Hardware Installation
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Chapter 2 Hardware Installation
2.1 Installation Notice
To ensure the proper operation for DCRS-5960 series and your physical security,
please read carefully the following installation guide.
2.1.1 Environmental Requirements
The switch must be installed in a clean area. Otherwise, the switch may be damaged
by electrostatic adherence.
Maintain the temperature within 0 to 50 °C and the humidity within 10% to 95%,
non-condensing.
The switch must be put in a dry and cool place. Leave sufficient spacing around the
switch for good air circulation.
The switch must work in the right range of power input (AC power: 90 ~ 264V (50Hz),
DC power: -40 ~ -60V)
The switch must be well grounded in order to avoid ESD damage and physical injury
of people.
The switch should avoid the sunlight perpendicular incidence. Keep the switch away
from heat sources and strong electromagnetic interference sources.
The switch must be mounted to a standard 19’’ rack or placed on a clean level
desktop.
2.1.1.1 Dust and Particles
Dust is harmful to the safe operation of DCRS-5960 series. Dust can lead to
electrostatic adherence, especially likely under low relative humidity, causing poor contact
of metal connectors or contacts. Electrostatic adherence will result in not only reduced
product lifespan, but also increased chance of communication failures. The recommended
value for dust content and particle diameter in the site is shown below:
Max Diameter (µm) 0.5 1 3 5
Max Density
(particles/m³) 1.4×1057×1052.4×1051.3×105
Table 2-1 Environmental Requirements: Dust
In addition, salt, acid and sulfide in the air are also harmful to the switch. Such

DCRS-5960 Series Installation Guide Chapter 2 Hardware Installation
2-2
harmful gases will aggravate metal corrosion and the aging of some parts. The site should
avoid harmful gases, such as SO2, H2S, NO2, NH3and Cl2, etc. The table below details the
threshold value.
Gas Average (mg/m³) Max (mg/m³)
SO20.2 1.5
H2S 0.006 0.03
NO20.04 0.15
NH30.05 0.15
Cl20.01 0.3
Table 2-2 Environmental Requirements: Particles
2.1.1.2 Temperature and Humidity
Although the switch is designed to use 4 fans, the site should still maintain a desirable
temperature and humidity. High-humidity conditions can cause electrical resistance
degradation or even electric leakage, degradation of mechanical properties and corrosion
of internal components. Extreme low relative humidity may cause the insulation spacer to
contract, making the fastening screw insecure. Furthermore, in dry environments, static
electricity is liable to be produced and cause harm to internal circuits. Temperature
extremes can cause reduced reliability and premature aging of insulation materials, thus
reducing the switch’s working lifespan. In the hot summer, it is recommended to use
air-conditioners to cool down the site. And the cold winter, it is recommenced to use
heaters.
The recommended temperature and humidity are shown below:
Temperature: Relative humidity
Long term condition Short term condition Long term condition Short term
condition
15 ~ 30°C 0 ~ 50°C 40 ~ 65% 10 ~ 95%
Table 2-3 Environmental Requirements: Temperature and Humidity
Caution!
A sample of ambient temperature and humidity should be taken at 1.5m above the
floor and 0.4m in front of the switch rack, with no protective panel covering the front and
rear of the rack. Short term working conditions refer to a maximum of 48 hours of
continued operation and an annual cumulative total of less than 15 days. Formidable
operation conditions refers to the ambient temperature and relative humidity value that

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may occur during an air-conditioning system failure, and normal operation conditions
should be recovered within 5 hours.
2.1.1.3 Power Supply
Before powering on the power supply, please check the power input to ensure proper
grounding of the power supply system. The input source for the switch should be reliable
and secure; a voltage adaptor can be used if necessary. The building’s circuit protection
system should include in the circuit a fuse or circuit-breaker of no greater than 240 V, 10 A.
It is recommended to use a UPS for more reliable power supplying. .
Caution!
Improper power supply system grounding, extreme fluctuation of the input power, and
transients (or spikes) can result in larger error rate, or even hardware damage!
2.1.1.4 Preventing Electrostatic Discharge Damage
Static electric discharges can cause damage to internal circuits, even the entire
switch. Follow these guidelines for avoiding ESD damage:
Ensure proper earth grounding of the device;
Perform regular cleaning to reduce dust;
Maintain proper temperature and humidity;
Always wear an ESD wrist strap and antistatic uniform when in contact with circuit
boards.
2.1.1.5 Anti-interference
All sources of interference, whether from the device/system itself or the outside
environment, will affect operations in various ways, such as capacitive coupling, inductive
coupling, electromagnetic radiation, common impedance (including the grounding system)
and cables/lines (power cables, signal lines, and output lines). The following should be
noted:
Precautions should be taken to prevent power source interruptions;
Provide the system with a dedicated grounding, rather than sharing the grounding
with the electronic equipment or lightning protection devices;
Keep away from high power radio transmitters, radar transmitters, and high frequency
strong circuit devices;
Provide electromagnetic shielding if necessary.
2.1.1.6 Rack Configuration
The dimensions of the DCRS-5960 series is designed to be mounted on a standard

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19’’ rack, please ensure good ventilation for the rack.
Every device in the rack will generate heat during operation, therefore vent and fans
must be provided for an enclosed rack, and devices should not be stacked closely.
When mounting devices in an open rack, care should be taken to prevent the rack
frame from obstructing the switch ventilation openings. Be sure to check the
positioning of the switch after installation to avoid the aforementioned.
Caution！
If a standard 19’’ rack is not available, the DCRS-5960 series can be placed on a
clean level desktop, leave a clearance of 100mm around the switch for ventilation, and do
not place anything on top of the switch.
2.1.2 Installation Notice
Read through the installation instruction carefully before operating on the system.
Make sure the installation materials and tools are prepared. And make sure the
installation site is well prepared.
During the installation, users must use the brackets and screws provided in the
accessory kit. Users should use the proper tools to perform the installation. Users
should always wear antistatic uniform and ESD wrist straps. Users should use
standard cables and connecters.
After the installation, users should clean the site. Before powering on the switch,
users should ensure the switch is well grounded. Users should maintain the switch
regularly to extend the lifespan of the switch.
2.1.3 Security Warnings
When using SFP transceiver, do not stare directly at the fiber bore when the switch is
in operation. Otherwise the laser may hurt your eyes.
Do not attempt to conduct the operations which can damage the switch or which can
cause physical injury.
Do not install, move or disclose the switch and its modules when the switch is in
operation.
Do not open the switch shell.
Do not drop metals into the switch. It can cause short-circuit.
Do not touch the power plug and power socket.
Do not place the tinder near the switch.
Do not configure the switch alone in a dangerous situation,
Use standard power sockets which have overload and leakage protection.
Inspect and maintain the site and the switch regularly.
Have the emergence power switch on the site. In case of emergence, switch off the

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power immediately.
Caution!
Potential risk include: Electric leakage, Power supply arcing, Power line breakage,
Imperfect earth, Overload circuit and Electrical short circuit. If electric shock, fire, electrical
short circuit occurs, please cut off the electricity supply and alarm rapidly. Rescue the
injured person in the contingency under inherently safe, give the injured person proper
first aid treatment according to the injury state, and seek help from the Medical
Emergency using various ways.
2.2 Installation Preparation
2.2.1 Verify the Package Contents
Please unpack the shipping package and verify carefully the contents inside.
2.2.2 Required Tools and Utilities
The required tools and utilities are shown below:
Cross screwdrivers
Flat-blade screwdriver
ESD wrist strap
Antistatic uniform
Caution!
Users should prepare the required tools by themselves.
2.3 Installation Guide
2.3.1 Installing Switch