Digital China Networks DCRS-7604E, DCRS-7608E Install Manual

DCRS-7600E InstallManual Content

1

Content

CHAPTER 1 PRODUCT OVERVIEW ......................................... 1-1

1.1 PRODUCT BRIEF ................................................................................. 1-1

1.1.1 Introduction ........................................................................................... 1-1

1.1.2 Main Features ........................................................................................ 1-2

1.2 TECHNICAL SPECIFICATIONS ................................................................. 1-2

1.3 PHYSICAL SPECIFICATIONS .................................................................. 1-6

1.4 HARDWARE COMPONENTS ................................................................... 1-6

1.4.1 Chassis .................................................................................................. 1-6

1.4.2 Introduction to DCRS-7600E Series Cards ....................................... 1-14

1.4.3 Interface description ........................................................................... 1-47

1.4.4 Power supply ...................................................................................... 1-48

1.4.5 Power Distribution Box ...................................................................... 1-52

1.4.6 System Backplane .............................................................................. 1-53

1.4.7 Fan Tray ............................................................................................... 1-54

1.4.8 Dust Gauze .......................................................................................... 1-56

1.4.9 Rear Panel ........................................................................................... 1-57

1.4.10 Side Panels ........................................................................................ 1-59

1.5 SYSTEM FEATURES ........................................................................... 1-61

1.5.1 DCRS-7604E System Features .......................................................... 1-61

1.5.2 DCRS-7608E System Features .......................................................... 1-62

CHAPTER 2 HARDWARE INSTALLATION ............................... 2-1

2.1 INSTALLATION NOTICE ......................................................................... 2-1

2.1.1 Basic Requirements ............................................................................. 2-1

2.1.2 Safety Guidelines .................................................................................. 2-4

2.1.3 Safety Warning ...................................................................................... 2-5

2.1.4 Hot Line Work Safety Guidelines ......................................................... 2-5

2.2 PREPARING FOR INSTALLATION ............................................................. 2-6

2.2.1 Checking Switch Hardware Configuration and Accessories ............ 2-6

2.2.2 Required Tools and Fixings ................................................................. 2-6

2.3 HARDWARE INSTALLATION ................................................................... 2-7

2.3.1 Switch Installation ................................................................................ 2-7

2.3.2 Switch grounding ................................................................................ 2-12

2.3.3 Card and module installation ............................................................. 2-13

2.3.4 Connecting to the Console ................................................................ 2-21

2.3.5 Connecting to the Management Port ................................................ 2-21

2.3.6 SFP transceiver installation ............................................................... 2-22

2.3.7 Copper Cable/Fiber Cable Connection ............................................. 2-22

2.3.8 Power supply connection .................................................................. 2-23

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Chapter 1 Product Overview

RECOMMENDATION: Please read this manual f irst before using the switch,
following the instructions to avoid damaging the device.

1.1 Product Brief

FIG

1-1 DCRS-7604E Switch

FIG 1-2 DCRS-7608E Switch

1.1.1 Introduction

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Digital China DCRS-7600E series is a high performance routi ng switch that can be
deployed as a core layer device for campus and enterprise networks, or an aggregation
device for IP metropolitan area networks (MAN).

DCRS-7604E provides 4 slots. DCRS-7608E provides 10 slots, 8 of which are
interface module slots.

DCRS-7600E series supports various types of line cards, and can seamlessly
support network interfaces from 100Mb, 1000Mb to 10G B Ethernet. Featuring functions
such as policy-based routing, IPv6, and load balance, it is capable of flexibly meeting the
different requirements of complex customer environments. Furthermore, DCRS-7600E
series allows redundancy for management modules, power supply. It supports both
AC-input and DC-input* power supplies, with hot-swapping support for cards, power
supplies and fans. The working temperature of all cards can be monitored in real-time,
offering carrier-class reliability.

1.1.2 Main Features

 DCRS-7604E 4 slots that can be configured in Primary controller-Primary Backup

mode with 2 management modules and 2 network modules, or Single controller mode
with one management module and 3 network modules.

 DCRS-7608E 10 slots that c an be configured in Primary controller-Primary Backup

mode with 2 management modules and 8 network modules, or Single controller mode
with one management module and 8 network modules.

 The management modules of DCRS-7604E have network interfaces, and then all the

slots are effective network slots.

 Store-and-forward switching, ensuring minimal latency.
 Auto MDI/MDI-X, enabled on all RJ-45 ports, allows connections to other switches

using a non-crossover twisted pair cable.

 Full-duplex IEEE802.3x flow control, half-duplex backpressure flow control.
 Console management port provided.
 Port working status and statistics available.
 Restart and reset to factory setting can be done both locally and remot ely.
 TFTP /FTP firmware upgrade available.
 Can be installed into standard 19-inch chassis.

1.2 Technical specifications

Item

DCRS-7604E

DCRS-7608E

Slot

4

10

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Port

10/100/1000BASE-T, 192 at best
1000Base-SX, 192 at best
1000Base-LX, 192 at best
10/100BASE-T, 192 at best

10GBase, at best

10/100/1000BASE-T, 384 at best
1000Base-SX, 384 at best
1000Base-LX, 384 at best
10/100BASE-T, 384 at best

10GBase, at best

Backboard

bandwidth

1.2Tbps(can extend to 2.4Tbps) 2.4Tbps(can extend to 4.8Tbps)

Exchange

capacity

640Gbps

1.28Tbps/2.4Tbps (the secon

d

generation engine)

Packet
Forwarding

Speed

476Mpps

952Mpps/1785Mpps

(the second

generation engine)

Forwarding Delay
Time among Ports

<=6ms <=6ms

VLAN Item

4K

4K

Layer 2 Protocol

Specifications

IEEE802.3(10Base-T), IEEE802.3u(100Base-TX), IEEE802.3z(1000BASE-X)

,

IEEE802.3ab(1000Base-T), IEEE802.3ae(10GBase), IEEE802.1Q(VLAN)

,

IEEE802.3ak(10GBASE-CX4), IEEEE802.1d(STP), IEEEE802.1W(RSTP),
IEEEE802.1S(MSTP), IEEE802.1p(COS), IEEE802.1x(Port Control)

,

IEEE802.3x(Flow control), IEEE802.3ad(LACP), Port Mirror, RSPAN, ULDP

,

LLDP, IGMP Snooping, QinQ, GVRP, VLAN, PVLAN, VOICE VLAN,

Protocol

Vlan, Multicast VLAN, Mac Vlan, Broadcast Storm Control

Layer 3 Protocol

Specifications
(IPv4)

Support ARP, ARP Proxy, ARP Limiting Speed, ARP Repeat-Authentication,
Gratuitous ARP
Support DNS client

Support Static Routing, RIPv1/v2, OSPFv2, BGP4, GRE

Unicast Routing Protocol

etc.

Support Routings for OSPF’s different process import each other
Support LPM Routing, Policy-based Routing(PBR), ECMP
Support VRRP, URPF, Black Hole Routing

Support IGMP v1/2/3, DVMRP, PIM-DM, PIM-SM, PIM-SSM, IGMP Proxy

,

anycast RP, MSDP, Static multicast Routing, boundary multi cast Routing etc.

Strengthen

Extend

Support in-embed firewall, IDS, IPSce VPN, Content-exchange service,

Network

Analysis hardware module etc.

Free-Resource

Support

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IPv6

Support ICMPv6, ND, DNSv6
Support IPv6 LPM Routing, IPv6 Policy-based Routing(PBR)
Support IPv6 VRRPv3, IPv6 URPF, IPv6 Black Hole Routing

Support RIPng, OSPFv3, BGP4+ Unicast Routing Protocol etc.

Support 6to4 Tunnels, configured Tunnels, ISATAP etc.

Support MLD Snooping, IPv6 Muticast VLAN

Support MLDv1/v2, PIM-SM/DM for IPv6, IPv6 anycast RP,

IPv6 Static multicast

Routing, IPv6 boundary multicast Routing, IPv6 multicast tunnel etc.

Support IPv6 ACL, IPv6 QOS

Strengthen

ARP/NDP Safety
function

Support ARP/NDP Spoofing Prevention, ARP/NDP Scanning Prevention

MPLS

MPLS, LDP, MPLS VPN, MPLS TE, Access public network technology

QoS

Carry out by hardware completely, have no effect for performance.

Each port has 8 queues. Support SP, WRR, SWRR queue scheduling algorithm.

Support traffic class base on 802.1p, ToS, port, DiffServ

Class traffic by ACL;

configure the COS, TOS, DSCP bases class result. Class

traffic by high-layer content for ACL-X’s 80 bytes

Support SP, WRR,

SWRR etc. Provide different service quality requested for

speech, data and video transmit at the same network.

Support Traffic Shaping

Support priority Mark/Remark

ACL

Carry out by hardware completely, have no effect for forwarding performance.
Support Standard ACL and Extended ACL
Support IP ACL, base on IP-subnet ACL, MAC ACL, IP-MAC ACL，
Support IP or MAC based on source/destination, Layer 3 IP protocol type

,

TCP/UDP layer 4 port number, IP priority (DSCP, ToS, Precedence),

base on

VLAN, Tag/Untag, CoS etc.

Support REDIRECT based on ACL, Traffic statistic based on ACL

ACL-X

Support to transfer security policy automaticall y base on t i me.

ACL’s deepness content can be used for QoS sort standard, the deepness can

extend 80 bytes.

DCSCMv4/v6

Support IPv4/IPv6 Multicast Source Controllable

, Prevent lawless Multicast

Source

Support IPv4/IPv6 multicast user Controllable

Support IPv4/IPv6 policy multicast

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Port Function

Support MAC+ port binding, IP+ MAC+ port binding, IP+ port binding

Support MAC filter

Support Port Limit(bandwidth management)

Support Port Loopback Detection

Support Port Mirror(CPU Port Mirror, ingress or egress unilateralism/

bidirectional, one-to-one, many-to-one, stride board, stride equipment),

Support Flow Control: HOL prevent head-packet block, half-

duplex back

pressure, full-duplex IEEE802.3x

Support Port aggregation IEEE802.3ad(LACP), port-to-port GEC/FEC,

each

trunk can up to 8 ports, support load equipoise

DHCPv4/v6

Support IPv4/IPv6 DHCP Client, IPv4/IPv6 DHCP Relay,

IPv4/IPv6 DHCP

Snooping

Inside-install IPv4/IPv6 DHCP Server, DHCP Option82

Security Access

Support IEEE 802.1x, DCSM

AAA

Authentication

Support IPv4/IPv6 RADIUS

Security Function

Configuration

Support IPv4/IPv6 syslog

Support the unite for IPv4/IPv6 HTTP and SSL

Support the user IP security inspection for IPv4/IPv6 SNMP

Support MIB and TRAP

Support IPv4/IPv6 FTP/TFTP

Support IPv4/IPv6 NTP

Support RMOM 1, 2, 3, 9 four group

Support the RADIUS authentication for IPv4/IPv6 telnet user name and password

Support IPv4/IPv6 SSHs

The right configuration for users can adopt radius serve r’s shell management

Support the function for timing-reset bases needs

sFlow Function

Support network flow analysis，Support RFC3176，

can realize the flow monitoring

and statistic based on protocol or address

IPFIX

A standard protocol can measure the flow information of the IETE network

Exception

monitoring and
fault check-up

Monitoring the Task exception, Memory exception, CPU utilance, Stack

exception, Switching-

chip exception, board temperature exception etc. And

giving an alarm

Centralized W

eb

Management

Software

It is adopted the Digital China centralized web management software

‘LinkManager’ for unified management.

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1.3 Physical Specifications

 Management Port

□ One RJ-45 serial port for each management modul e

 AC Power Input

□ Input: 90～264V, 50 ~ 60Hz
□ Built-in Universal Power Supply

 DC Power Input

□ Input: -36V~ -72VDC
□ Built-in Universal Power Supply

 Power Consumption

□ DCRS-7604E: 400W Max
□ DCRS-7608E: 1200W Max

 Operating Temperature

□ 0°C ~ 45°C

 Storage Temperature

□ -40°C ~ 70°C

 Relative humidity

□ 10% ~ 90% with no condensate

 Dimension

□ DCRS-7604E 440mm×266mm×421mm (W x H x D)
□ DCRS-7608E 436mm×797mm×478mm (W x H x D)

 Weight

□ DCRS-7604E: 30kg (max. full configuration wei ght)
□ DCRS-7608E: 65kg (max. full configuration weight)

 Mean Time Before Failure

□ Min. 80,000 Hours MTBF

1.4 Hardware Components

DCRS-7604E consists of the chassis, power supply system, ventilation system,

system board, etc.

1.4.1 Chassis

1.4.1.1 DCRS-7604E Chassis

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The DCRS-7604E uses a 19-inch Rack Mountable Chassis, with the standard
dimensions of 440mm (W) x 266mm (H) x 421mm (D). The chassi s consists of functional
block and power supply block. The function module bl ock is a board rack, which is the
supporting structure for DCRS-7604E system boards (4 boards max). The fan block is
located on the left side of the board rack, allowing one fan tray (4 axial f ans for each fan
tray). Dust gauze is provided on the right of the board rack for filtering air circulation
through the rack. The power block upper the dust gauze provid es power to the system,
supporting up to two power modules. The po wer modules insert int o the power sl ots from
the front, with the distribution box at the back of the rack for maintenance.

In addition, there is an ESD Wrist Strap Connectors on the board rack, located on the
left side of the upper.

Fig 1-3 DCRS-7604E Module Outlook

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Fig 1-4 DCRS-7604E Front Panel View

① Management slot: It supports two management slots.

MRS-7604E-M1XFP12GX12GB or MRS-7604E-M44GT etc.can be
inserted in to the Management slots.The second slot can als o be used
as I/O slot for configuring various I/O modules.

② Network slot: 2 network slots are provided. Various network modules

can be added to the network slots. Such as MRS-7600E-4XFP and
MRS-7600E-12GX12GT etc.

③ Power slot: Used for system power supply modules. Support up to two

400W AC/DC modules.

④ Fan tray slot: Supports up to one system fan assemblies, each

assembly consists of four axial fans.

⑤ Dust gauze slot: Exterior air inlet for the ventilation subsystem.
⑥ Distribution box slot: For system distribution box use, works in AC

mode based on the power modules.

1.4.1.1.1 Board Rack

The board rack consists of board slots and a system board.

The boards are inserted vertically into t he DCRS-7604E 4 unit boards are provided.
There are four slots in DCRS-7604E from number 1 to number 4 in order of top to down.
The first slot is used to install management module; the second slot is used to
management module under 1+1 redundant backup mode or i nstall various I/O interface
modules.

A reset button (printed on the panel as Reset), hot swap button (printed on the panel
as SWAP), board power indicator (printed on the panel as PWR) and board running status
indicator (printed on the panel as RUN) are provided for each board. On t he Main Control
cards there is Master-Slave indicator (printed on the panel as M/S) T here is also a power
module status indicator (printed on the panel as Power), fan assembly status indicator
(printed on the panel as Fan), and interface status indicators for corresponding

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management interfaces and network interfaces (print ed on the panel as Link and Act).

The DCRS-7604E system board is an essential part of the switch, located inside t he
switch and providing interconnectivity between the management switch modules (short for
management card) and network interface modules (line card), and for all management
and control signals.

1.4.1.1.2 Power Supply

When using A.C. power supply, we shall adopt power supply of 110V/220V and
corresponding A.C. distribution box. The permissible range of power supply is 90～
264VAC, 50～60Hz. The maximum output power of single power supply module is 400W.

When using D.C. power supply, we shall adopt power supply of -48V and
corresponding D.C. distribution box. The permissible range of power supply is -36V～

-72VDC. The maximum output power of single power supply module is 400W.

1.4.1.1.3 Ventilation and Cooling System

The operating ambient temperature of the DCRS-7604E is 0 ~ 45°C, the thermal
design of the equipment can ensure that the surface tem perature of the device will not
exceed 50-80％ of the highest temperature allowable.

The switch uses fan assemblies to disperse heat, with the air flow being drawn in
through the right section and out through the left section to facilitate air circulation, s o that
the switch can maintain normal operation under specified environmental conditions . The
fan tray is attached to the fan tray slots left the board rack, and ventilation is provided via 4
axial fans that pump out air. Fan trays are hot swappable for maintenance, their status are
indicated by the FAN indicators on the main switch panel. In addition, dust gauze is
provided on the right of the board rack for filtering the air circulating through the rack. The
dust gauze can be unplugged and removed through the back for maintenance.

1.4.1.2 DCRS-7608E Chassis

The DCRS-7608E uses a 19-inch Rack Mountable Chassis, with the standard
dimensions of

436mm (W) x 797mm (H) x 478mm (D). The chassis consists of functional

block, thermal block, and power supply block.

The function module block is a board rack, which is the supporting structure for
DCRS-7608E system boards (10 boards max). Ten wiring clips are provided in the upper
and lower parts of the board rack respectively, for the positioning of all kinds of cables. In
addition, there are two ESD Wrist Strap Connectors on t he board rack, located on the left
side of the upper and lower rack respectively.

The thermal block is located on the upper part of the board ra ck, allowing three fan

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trays (2 axial fans for each fan tray). Dust gauze is provided under the board rack for
filtering air circulation through the rack.

The power block under the dust gauze provides power to the system, supporting up
to three power modules. The power modules insert into the power slots from the front, with
the distribution box at the back of the rack for maintenance. Closely beside the distribution
box, a grounding post has been provided on each side of the rack for grounding
connections.

In addition, on both sides of the lower section of the chassis, a handler is provided for
easier transport.

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Fig

1-5 DCRS-7608E Module Outlook

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Fig 1-6 DCRS-7608E Front Panel view

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① Management slot: 2 management slots are provided. One or two

management switching modules MRS-7608E-MI can be inserted in to
the Management slots.

② Network slot: 8 network slots are provided. Various network modules

can be added to the network slots, such as MRS-7600E-48GB,
MRS-7600E-4XFP, etc.

③ Power slot: Used for system power supply modules. Supports up to

three 600W AC modules or three 600W DC modules.

④ Fan tray slot: Supports up to three system fan assemblies, each

assembly consists of two axial fans.

⑤ Dust gauze slot: exterior air inlet for the ventilation subsystem.
⑥ Distribution box slot: For system distribution box use, works in AC/DC

mode based on the power modules.

1.4.1.2.1 Board Rack

The board rack consists of board slots and a system board.

The boards are inserted vertically into the DCRS-7608E 10 unit boards are provided.
These include 2 management slots in the middle for management switch modules,
marked specially in red as M1 and M2. The other eight board slots are network slots for
various network interface modules, sequenced as 1 to 8 from left to right.

A reset button (printed on the panel as Reset), hot swap button (printed on the panel
as SWAP), board power indicator (printed on the panel as PWR) and board running status
indicator (printed on the panel as RUN) are provided for each board. On the Main Control
cards there is Master-Slave indicator (printed on the panel as M/S) There is also a power
module status indicator (printed on the panel as Power: Fail/OK), fan assembly status
indicator (printed on the panel as Fan: Alarm/OK), and interface status indicators for
corresponding management interfaces and network interfaces (printed on the panel as
Link and Act).

The DCRS-7608E system board is an essential part of the switch, located inside the
switch and providing interconnectivity between the management switch modules (short for
management card) and network interface modules (line card), and for all management
and control signals.

1.4.1.2.2 Power Supply

When powered by AC sources, the 110V/220 VAC input power supplies and
corresponding AC distribution box should be use d. The acceptable input power ranges
from 90 ~ 264 VAC at 50 ~ 60 Hz. The maximum output power of each power module is
600W.

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When powered by DC sources, the -48 VDC input power suppl y and corresponding
DC distribution box should be used. The acceptable input power ranges from -36 V ~ 72
VDC. The maximum output power of each power module is 600W.

1.4.1.2.3 Ventilation and Cooling System

The operating ambient temperature of the DCRS-7608E is 0 ~ 45°C, the thermal
design of the equipment can ensure that the surface tem perature of the device will not
exceed 50-80％ of the highest temperature allowable.

The switch uses fan assemblies to disperse heat, with the air flow being drawn in
through the bottom section and out through the upper section to facilitate air circulation, so
that the switch can maintain normal operation under specified environmental condit ions.
Three fan trays are attached to the fan tray slots above the board rack, and ventilation is
provided via 6 axial fans that pump out air. Fan trays are hot swappable for maintenance,
their status are indicated by the FAN indicators on the main switch panel. In addition, dust
gauze is provided under the board rack for filtering the air circulating through the rack. The
dust gauze can be unplugged and removed through the front for maintenance.

1.4.2 Introduction to DCRS-7600E Series Cards

The following eleven cards for the DCRS-7600E series are currently available:
 Main control card (MRS-7604E-M4GX24TX): The central switching and

controlling module for the DCRS-7604E, System status control, switch
management, user access control and administration, and network operation
maintenance are performed here. 24 10/10Base-TX ports with 4 Gigabit combo
ports (RJ45 or SFP) are also provided.

 Main control card (MRS-7608E-MI): The central switching and controlling

module for the DCRS-7608E. System status control, switch management, user
access control and administration, and network operation maintenance are
performed here.

 4 Gigabit Combo ports and 24 100/10 Base-TX ports line card

(MRS-7600E-4GX24TX): supporting 4 Gigabit Combo ports and 24 100/10
Base-TX ports for layer 2 and layer 3 switching and routing.

 12 Gigabit Combo ports and 12 copper GT ports (MRS-7600E-12GX12GT):

supporting 12 Gigabit Combo ports and 12 copper GT ports for layer 2 and layer
3 switching and routing and ipv6 wire speed forward.

 Dual 10G XFP ports, 12 Gigabit Combo ports and 12 copper Gb ports

(MRS-7600E-2XFP12GX12GT): supporting dual 10G XFP ports, 12 Gigabit

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Combo ports and 12 copper GT ports f or layer 2 and layer 3 switching , routing
and IPv6 wire speed forward.

 48 copper GT ports line card (MRS-7600E-48GT): supporting 48 1000Base-T

copper ports for layer 2 and layer 3 switchi ng and routing and IPv6 wire speed
forward.

 Main control card (MRS-7604E-M1XFP12GX12GT): The central switching and

controlling module for the DCRS-7604E, System status control, switch
management, user access control and administration, and network operation
maintenance are performed here. The board can be insert ed into f irst or second
slots of the chassis for Master-Slave redundancy, and supports IPv6 wire speed
transmission function. 12-port 1G optical-electronic combo, 12-port 1G
electronic and 1-port 10G XFP interface.

 40G XFP interface line card (MRS-7600E-4XFP): implements 2-layer and

3-layer wire-speed switching and routing function of 4 10,000Mbps XFP
interfaces and IPv6 wire-speed transmiss i on.

 48 copper GT ports line card (MRS-7600E-48GB): implements 2-layer and

3-layer wire-speed switching and routing function of 48 1000Mbps optical
interfaces and IPv6 wire-speed transmission.

 Main control card (MRS-7604E-M44GT): The switching module of the

DCRS-7604E switch. System status control, switch manage ment, user access
control and management, and network maintenances are performed here. The
board can be inserted into first or second s lots of the chassis for Master-Slave
redundancy, supports IPv6 wire-speed transmission. It has 44 1000Mbps
electronic interfaces at the same time.

 Main control card (MRS-7604E-M1XFP12GX12GB): is switching module for the

DCRS-7604E. System status control, switch management, user ac cess control
and management, and network maintenances are perform ed here. The board
can be inserted into first or second slots of the chassis for Master-Slave
redundancy. It supports 2-layer and 3-layer wire-speed switching and routing
function of 12 1000Mbps optical-electronic combos, 12 1000Mbps opticals and 1
10,000Mbps XFP interfaces, IPv6 wire-speed transmission.

 12 1000Mbps optical-electronic combo, 12 1000Mbps optical interfaces line

card(MRS-7600E-12GX12GB): The switching module of the 76 series switch
and implements 2-layer and 3-layer wire-speed switching and routing function of
12 1000Mbps optical-electronic combo, 12 1000Mbps optical interfaces, IPv6
wire-speed transmission.

 12 1000Mbps optical-electronic combo, 12 1000Mbps optical and 2 10,000Mbps

XFP interfaces line card (MRS-7600E-2XFP12GX12GB): The switching module

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of the 76 series switch and implements 2-layer and 3-layer wire-speed switching
and routing function of 12 1000Mbps optical-electronic combo, 12 1000Mbps
optical and 2 10,000Mbps XFP interfaces, IPv6 wire-speed transmission.

 Main control card (MRS-7608E-M2): The second generation central swi tching

and controlling module for the DCRS-7608E. System status control, switch
management, user access control and administration, and network operation
maintenance are performed here.

 Main control card (MRS-7608E-M3): The second generation central swi tching

and controlling module for the DCRS-7608E. System status control, switch
management, user access control and administration, and network operation
maintenance are performed here.

 12 1000Mbps electronic interfaces, 24 1000Mbps optical interfaces line card

(MRS-7600E-24GB12GT): The switching module for the 7600E series switch,
which supports MPLS VPN function and implements 2-layer and 3-layer
wire-speed switching and routing function of 12 100 0Mbps electronic interfaces,
24 1000Mbps optical interfaces, IPv6 wire-speed transmission.

 12 1000Mbps electronic interfaces, 12 1000Mbps optical and 2 10,000Mbps

XFP interfaces line card (MRS-7600E-2XFP24GB12GT): The switching module
for the 7600E series switch , which supports MPLS VPN function and
implements 2-layer and 3-layer wire-speed switching and routi ng function of 12
1000Mbps electronic interfaces, 12 1000Mbps optical and 2 10,000Mbps XFP
interfaces, IPv6 wire-speed transmission.

 Dual 10G XFP ports , 12 Gigabit Combo ports and 12 copper Gb ports

(MRS-7600E-2XFP12GX12GT(R2)): The switching module for the
DCRS-7604E(R2), supporting dual 10G XFP ports, 12 Gigabit Combo ports and
12 copper GT ports for layer 2 and layer 3 switching , routing and IPv6 wire
speed forward.

 12 Gigabit Combo ports and 12 copper Gb ports (MRS-7600E-12GX12GT(R2)):

The switching module for the DCRS-7604E(R2), supporting 12 Gigabit Com bo
ports and 12 copper GT ports for layer 2 and layer 3 switching , routing and IPv6
wire speed forward.

 48 copper GT ports line card (MRS-7600E-48GB (R2)): The switching module

for the DCRS-7604E (R2), implements 2-layer and 3-l ayer wi re -s peed swi tc hing
and routing function of 48 1000Mbps optical interfaces and IPv6 wire-speed
transmission.

 Main control card (MRS-7604E-M1XFP12GX12GT (R2)): The central switching

and controlling module for the DCRS-7604E (R2), System status control, switch
management, user access control and administration, and network operation

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maintenance are performed here. The board can be insert ed into f irst or second
slots of the chassis for Master-Slave redundancy, and supports IPv6 wire speed
transmission function. 12-port 1G optical-electronic combo, 12-port 1G
electronic and 1-port 10G XFP interface.

 Main control card (MRS-7608E-MI (R2)): The central switc hing and controlling

module for the DCRS-7608E (R2). System status control, switch management,
user access control and administration, and networ k operat ion m aintenanc e are
performed here.

1.4.2.1 MRS-7604E-M4GX24TX

The MRS-7604E-M4GX24TX is switching module for the DCRS-7604E. System
status control, switch management, user access control and management, and network
maintenances are performed here. The board can be inserted into firs t or second slots of
the chassis for Master-Slave redundancy. 24 10/10Base-TX ports with 4 Gigabit combo
ports (RJ45or SFP) are also provided.

1.4.2.1.1 Front Panel

The MRS-7604E-M4GX24TX provides 24 10/100Base-TX ports and 4 Gigabit
COMBO slots. At the same time, it comes with 1 Console po rt (control console) and 1
10/100Base-Tx Ethernet port (administration port).

The Front Panel view is shown below:

Fig 1-7 MRS-7604E-M4GX24TX

1.4.2.1.2 Front Panel - Indicator

The following table describes the front panel indicators of MRS-7604E-M4GX24TX:

Table 1-1 MRS-7604E-M4GX24TX indicators description

LED Panel Symbol Status Description

Power

Indicator

PWR

On (Green) Card powered
Off Card powered off

Operation

indicator

RUN

On (Green, blink at 1
Hz)

Cards operating normally

On (Green, blink at 8
Hz)

System is loading

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On (Yellow, blink at 8
Hz)

System is shutting down

On (Red, blink at 8
Hz)

Cards malfunction

Off

Cards are powered off and
can be removed

Master-Slave

indicator

M/S

On (Green) Master
Off Slave

Fan Assembly

Status

indicator:

FAN

FAN

On (Green) Fan operating normally
On (Red) Fan malfunctioning

Off

Fan not present (with Alarm
off)

SFP port indicator

Status

indicator

Link

On (Green)

Network connection on SFP
transceiver is normal

Off

No network connection

present on SFP transceiver

Transmission

Indicator

Act Blinking (Green) Sending or receiving data

10/100Base-RJ45 port indicator

Status

indicator

Link

On (Green)

Network connection is
normal

Off

No network connection
present on

10/100Base-RJ45 port

Transmission

Indicator

Act Blinking (Green) Sending or receiving data

1000Base-TX port indicator

Status

indicator

Link

On (Green)

Network connection on

1000Base-TX transceiver is

normal

Off

No network connection

present on 1000Base-TX
transceiver

Transmission

Indicator

Act Blinking (Green) Sending or receiving data

1.4.2.1.3 Front Panel Port Description

The E MRS-7604E-M4GX24TX provides 24 10/100Base-TX ports and 4 Gigabite
COMBO (RJ-45 or SFP) transceiver slots.

1.4.2.1.4 Front Panel – Console Port

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The MRS-7604E-M4GX24TX provides a RJ-45 (receptacle) Console serial port.
Users can connect to hosts via this port to perform system debugging, configuration,
maintenance, management and host software loading.

Table 1-2 MRS-7604E-M4GX24TX Console description

Property Specification

Connector

RJ-45 (receptacle)

Connector type

RS-232

Baud rate

9600bps (default)

Supporting service

 Connects to character terminals
 Connects to PC serial port and run ning terminal emulator

on PC.

1.4.2.1.5 Front Panel – Management Port

The MRS-7604E-M4GX24TX provides a RJ-45 (rec eptacle) Et hernet port. Us ers can
connect through this management port to hosts for program loading or to connect to
remote devices for remote management (e.g., a managing workstation). Note: when
connecting to the host, a cross-over cable should be used.

Table1-3 MRS-7604E-M4GX24TX management port description

Property

Specification

Connector

RJ-45 (Receptacle)

Connector type



10/100Mbps auto sensing



Cat 5 UTP: 100 m

1.4.2.1.6 Front Panel – Reset Button

MRS-7604E-M4GX24TX provides a RESET button for resetting the board.

1.4.2.2 MRS-7608E-MI

The MRS-7608E-MI is switching module for the DCRS-7608E. System status control,
switch management, user access control and management, and network maintenances
are performed here. The board can be inserted into M1 or M2 slots of the chassis for
Master-Slave redundancy.

1.4.2.2.1 Front Panel

The MRS-7608E-MI comes with 1 Console port (control console) and 1
10/100Base-Tx Ethernet port (management port).

The Front Panel view is shown below:

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Fig 1-8 MRS-7608E-MI Front Panel view

1.4.2.2.2 Front Panel - Indicator

The following table describes the front panel indicators of MRS-7608E-MI:

Table 1-4 MRS-7608E-MI indicators description

LED Panel Symbol Status Description

Power

Indicator

PWR

On (Green) Card powered
Off Card powered off

Operation

indicator

RUN

On (Green, blink at 1

Hz)

Cards operating normally

On (Green, blink at 8

Hz)

System is loading

On (Yellow, blink at 8

Hz)

System is shutting down

On (Red, blink at 8 Hz) Cards malfunction

Off

Cards are powered off and can be
removed

Master-Slav

e indicator

M/S

On (Green) Master
Off Slave

Power

Supply

Module

Status

indicator:

POWER

OK

On (Green)

Power Supply Module operating

normally

Off

Power supply module

malfunctioning or not present (with
Fail off)

Fail

On (Yellow) Power Supply Module malfunction

Off

Power supply module operating

normally or not present (with OK
off)

Fan

Assembly

Status

indicator:

FAN

OK

On (Green) Fan operating normally

Off

Fan malfunctioning or not present
(with Alarm off)

Alarm

On (Yellow) Fan malfunction

Off

Fan operating normally or not

present (with OK off)

1.4.2.2.3 Front Panel – Console Port

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The MRS-7608E-MI provides a RJ-45 (receptacle) Console serial port. Users can
connect to hosts via this port to perform system debugging, conf iguration, maintenance,
management and host software loading.

Table 1-5 MRS-7608E-MI Console description

Property Specification

Connector

RJ-45 (receptacle)

Connector type

RS-232

Baud rate

9600bps (default)

Supporting service

 Connects to character terminals
 Connects to PC serial port and run ning terminal emulator

on PC.

1.4.2.2.4 Front Panel – Management Port

The MRS-7608E-MI provides a RJ-45 (receptacle) Ethernet port. Users can connect
through this management port to hosts for program loading or to connect to remote
devices for remote management (e.g., a managing workstation). Not e: when connecting
to the host, a cross-over cable should be used.

Table 1-6 MRS-7608E-MI management port description

Property Specification

Connector

RJ-45 (Receptacle)

Connector type



10/100Mbps auto sensing



Cat 5 UTP: 300 m

1.4.2.2.5 Front Panel – Reset Button

MRS-7608E-MI provides a RESET button for resetting the board.

1.4.2.3 MRS-7600E-4GX24TX

MRS-7600E-4GX24TX is the line card exchange model of DCRS-7600E series
exchanges. It implements the layer2 and layer3 wire speed exchange and routing function
of twenty four 10/100M electronic ports and four 1G COMBO (4 10/100/1000M electroni c
interfaces or four 1G optical interfaces).

1.4.2.3.1 Front Panel Diagram

MRS-7600E-4GX24TX provides twenty four 10/100M electronic ports and four 1G
COMBO.

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Fig

1-9 MRS-7600E-4GX24TX front panel view

1.4.2.3.2 Front Panel Indicator

The description of front panel indicator of MRS-7600E-4GX24TX is as follows:

Table 1-7 MRS-7600E-4GX24TX indicator description

Indicator

Panel

Sign

Status Meanings

Power

Indicator

PWR

On (Green)

Network Interface Card
power on

Off

Network Interface Card
power off

Running

Indicator

RUN

On (Green 1Hz
flash)

Network Interface Card
running in normal status

On (Green 8Hz

flash)

System

loading (Network

Interface Card Booting after

hot plug in)

On (Yellow 8Hz
flash)

System shutting down

On (Red 8Hz flash)

Running status is in failure

Off Network Interface Card is off

and can be pulled out

SFP Interface indicator

Status

Indicator

Link

On (Green)

SFP transceiver network
connection is normal

Off

There is not network
connection at SFP
transceiver

Transmissio

n Indicator

Act Flashes (Green) Sending or receiving data

100MB electronic port indicator

Status
Indicator

Link On (Green)

100MB electronic port
transceiver network
connection is normal

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Off

There is not network
connection at 100MB
electronic port transceiver

Transmissio

n Indicator

Act Flashes (Green) Sending or receiving data

1GB Electronic Port Indicator

Status

Indicator

Link

Flashes (Green)

1GB electronic port
transceiver network
connection is normal

Off

There is not network
connection at 1GB
electronic port transceiver

Transmissio

n Indicator

Act Flashes (Green) Sending or receiving data

1.4.2.3.3 Front Panel Interface Description

MRS-7600E-4GX24TX provides twenty four 10/10 0M and four 1G COMBO.

1.4.2.3.4 Front Panel RESET Button

MRS-7600E-4GX24TX provides a RESET button to reset the panel.

1.4.2.4 MRS-7600E-12GX12GT and
MRS-7600E-2XFP12GX12GT

12-port optical-electronic combo and 12-port electronic interface line card
(MRS-7600E-12GX12GT): to implement the layer 2 and layer3 wire speed exchang e and
routing function of 12-port 1G optical-electronic combo and 12-port 1G electronic interface
and IPv6 wire speed transmission function.

Double 10G and 12-port optical-electronic combo and 12-port electronic interface line
card (MRS-7600E-2XFP12GX12GT): to implement the layer2 and layer3 wire speed
exchange and routing function of 12-port 1G optical-electronic combo, 12-port 1G
electronic and 2-port 10G XFP interface, and IPv6 wire speed transmission function.

1.4.2.4.1 Front Panel Diagram

MRS-7600E-12GX12GT provides twelve 1G SFP ports, twenty four 1G electronic
ports, where the twelve 1G optical ports and the last twelve 1G electronic ports are combo
ports.

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Fig 1-10 MRS-7600E-12GX12GT front panel view

MRS-7600E-2XFP12GX12GT provides two 10G XFP ports, twelve 1G optical SFP
ports, twenty four 1G electronic SFP ports, where the twelve 1G optical ports and the last
twelve 1G electronic ports are combo ports.

Fig 1-11 MRS-7600E-2XFP12GX12GT fr ont panel view

1.4.2.4.2 Front Panel Indicator

The description of front panel indicator of MRS-7600E-12GX12GT and
MRS-7600E-2XFP12GX12GT is as follows:

Table 1-8 MRS-7600E-12GX12GT and MRS-7600E-2XFP12GX12GT indicator

description

LED

Indicator

Panel

Sign

Status Meanings

Power
Indicator

PWR

On (Green) Network Interface Card power on
Off Network Interface Card power off

Running
Indicator

RUN

On (Green 1Hz

flash)

Network Interface Card running in normal
status

On (Green 8Hz

flash)

System loading (Network Interface Card

Booting after hot plug in)

On (Yellow 8Hz

flash)

System shutting down

On (Red 8Hz flash) Running status is in failure

Off

Network Interface Card is off and can be
pulled out

RJ-45 Interface indicator

Status
Indicator

Shared

On (Green)

RJ-

45 Interface Network Connection is

normal

Off

There is not network connection at RJ-45

interface
Transmissio
n Indicator

On (Yellow) Sending or receiving data

SFP Interface Indicator

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Status
Indicator

“Left
Light”

On (Green)

SFP transceiver network connection is

normal

Off

There is not network connection at SFP

interface
Transmissio
n Indicator

“Right
Light”

Flashes (Green) Sending or receiving data

XFP interface Indicator

Status
Indicator

Link

On (Green)

XFP transceiver network connection is

normal

Off

There is not network connection at XFP

transceiver
Transmissio
n Indicator

Act Flashes (Green) Sending or receiving data

1.4.2.4.3 Front Panel Interface Description

MRS-7600E-12GX12GT and MRS-7600E-2XFP12GX12GT provide twelve SFP 1G

optical fibre transceivers and twenty four RJ-45 1 G electronic port slots.

MRS-7600E-2XFP12GX12GT provides two XFP 10G optical ports.

1.4.2.5 MRS-7600E-48GT

48GT electronic interface line card (MRS-7600E-48GT): to implement the layer2 and
layer3 wire speed exchange and routing function of 48GT electroni c interface and IPv6
wire speed transmission function.

1.4.2.5.1 Front Panel Diagram

MRS-7600E-48GT provides 48-Port 10/100/1000M Ethernet electronic ports,

Fig 1-12 MRS-7600E-48GT front panel view

The ports in the above chart are port GE1－GE48 from the bottom-left corner to the
top-right corner. The indicator lamps of ports having odd index number are on the left side
of the port array, while the indicator lamps of ports having even index number are on the
right side. The lamps are green and orange double indicator lamps.

1.4.2.5.2 Front Panel Indicator

The description of front panel indicator of MRS-7600E-48GT as foll ows:

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Table 1-9 MRS-7600E-48GT indicator description

LED

Indicator

Panel

Sign

Status Meanings

RJ-45 Interface indicator

Status
Indicator

Shared

On (Green)

RJ-

45 Interface Network Connection is

normal

Off

There is not network connection at RJ-45

interface
Transmissio
n Indicator

On (Yellow) Sending or receiving data

1.4.2.5.3 Front Panel Interface Description

MRS-7600E-48GT provides 48-port 10/100/1000M RJ-45 electronic port.

1.4.2.6 MRS-7604E-M1XFP12GX12GT

The MRS-7604E-M1XFP12GX12GT is switching module for the DCRS-7604E.
System status control, switch management, user acc ess control and management, and
network maintenances are performed here. The board can be inserted into first or second
slots of the chassis for Master-Slave redundancy. 12-port 1G optical-electronic combo,
12-port 1G electronic and 2-port 10G XFP interface, and IPv6 wire speed transmission
function.

1.4.2.6.1 Front Panel Diagram

MRS-7604E-MIXFP12GX12GT provides 2-port 1G optical-electronic combo, 12-port
1G electronic and 1-port 10G XFP interface. It implements 2-layer and 3-layer wire-speed
switching, routing function and IPv6 transmission. The front 12 ports are 1000M electronic
ports and the last 12 ports are combo ports.

Fig 1-13 MRS-7604E-M1XFP12GX12GT front panel view

1.4.2.6.2 Front Panel Indicator

The description of front panel indicator of MRS-7604E-M1XFP12GX12GT as follows:

Table 1-10 MRS-7604E-M1XFP12GX12GT indicator description

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LED

Indicator

Panel

Sign

Status Meanings

Power
Indicator

PWR

On (Green) Network Interface Card power on
Off Network Interface Card power off

Master-Slav

e indicator

M/S

On (Green) Master
Off Slave

FAN
indicator

FAN

On(Green) Fan present and operating normally
On(Red)

Fan not present or operating abnormally

Off

Fan not present

Running
Indicator

RUN

On (Green 1Hz

flash)

Network Interface Card running in normal
status

On (Green)

System loading (Network Interface Card

Booting after hot plug in)

Off Network Interface Card running abnormally

RJ-45 Interface indicator

Status
Indicator

On (Green)

RJ-

45 Interface Network Connection is

normal

Off

There is not network connection at RJ-45
interface

On (Orange) Sending or receiving data

SFP Interface Indicator

Status
Indicator

“Left
Light”

On (Green)

SFP transceiver network connection is

normal

Off

There is not network connection at SFP

interface
Transmissio
n Indicator

“Right
Light”

Flashes (Green) Sending or receiving data

XFP interface Indicator

Status
Indicator

Link

On (Green)

XFP transceiver network connection is

normal

Off

There is not network connection at XFP

transceiver
Transmissio
n Indicator

Act Flashes (Green) Sending or receiving data

1.4.2.6.3 Front Panel Interface Description

MRS-7604E-M1XFP12GX12GT provides 12-port 1G optical-electronic combo,

24-port 1G electronic and 1-port 10G XFP interface.

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1.4.2.7 MRS-7600E-4XFP

MRS-7600E-4XFP implements 2-layer and 3-layer wire-spee d switching and routing

function of 4 10,000Mbps XFP interfaces and IPv6 wire-speed transmission.

1.4.2.7.1 Front Panel Diagram

The following is the sketch map of its front panel:

Fig 1-14 the Sketch Map of the Front Panel of MRS-7600E-4XFP

1.4.2.7.2 Front Panel Indicator

The following is the instruction of the indicator lamps on the front panel of

MRS-7600E-4XFP.

Table 1-11 the Instruction of Indicator Lamps of MRS-7600E-4XFP

LED

Indicator

Panel

Sign

State Explanation

Power
Indicator
Lamp

PWR

On(green) The boardcard is power-on
Off The boardcard is power-off

Run
Operating
Indicator

RUN

On(green,

glittering at the

frequency of 1 HZ)

The boardcard is operating normally

On(green,

glittering at the

frequency of 8 HZ)

The system is booting(Booting

after the

boardcard is hot-plugged in)

Off The boardcard is operating abnormally

XFP Interface Indicator Lamps

State
Indicator
Lamp

Link

On(green)

The network connection of XFP Transceiver

is normal.

Off

There is no network connection o

n XFP

Transceiver
Transmissio

n Indicator

Lamp

Act On(green) Receiving or sending data.

1.4.2.7.3 Front Panel Interfaces Description

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MRS-7600E-4XFP provides 4 10,000Mbps XFP electric interfaces.

1.4.2.8 MRS-7600E-48GB

48-port 1000Mbps optical line card (MRS-7600E-48GB): Implements 2-layer and
3-layer wire-speed switching and routing function of 48 1000Mbps optical interfaces, and
IPv6 wire-speed transmission.

1.4.2.8.1 Front Panel Diagram

MRS-7600E-48GB provides 48 1000Mbps optical interfac es.

The following is the sketch map of its front panel:

Fig 1-15 the Sketch Map of the Front Panel of MRS-7600E-48GB

The ports in the above chart are port GB1－GB48 from the bottom-left corner to the
top-right corner. The indicator lamps of ports having odd index number are on the left side
of the port array, while the indicator lamps of ports having even index number are on the
right side. The lamps are green indicator lamps.

1.4.2.8.2 Front Panel Indicator

The following is the instruction of the indicator lamps on the front panel of
MRS-7600E-48GB.

Table 1-12 the Instruction of Indicator Lamps of MRS-7600E-48GB

LED

Indicator

Panel

Sign

State Explanation

SFP Interface Indicator Lamps

State
Indicator
Lamp

On(green)

The network connection of SFP interface is
normal.

Off

There is no netw

ork connection on SFP

interface

Transmissio

n Indicator

Lamp

On(green) SFP is receiving or sending data.

1.4.2.8.3 Front Panel Interface Description

MRS-7600E-48GB provides 48 SFP 1000Mbps optical transceiver interfaces.

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1.4.2.9 MRS-7604E-M44GT

The MRS-7604E-M44GT is switching module for the DCRS-7604E switch. System
status control, switch management, user access control and management, and network
maintenances are performed here. The board can be inserted into firs t or second slots of
the chassis for Master-Slave redundancy, supports IPv6 wire-speed transmission. It has
44 1000Mbps electronic interfaces at the same time.

1.4.2.9.1 Front Panel Diagram

MRS-7604E-M44GT implements 2-layer and 3-layer wire-speed switching and
routing function of 44 1000Mbps electronic interfaces and IPv6 transmission.

The following is the sketch map of its front panel:

Fig 1-16 the Sketch Map of the Front Panel of MRS-7604E-M44GT

1.4.2.9.2 Front Panel Indicator

The following is the instruction of the indicator lamps on the front panel of
MRS-7604E-M44GT.

Table1-13 MRS-7604E-M44GT indicator description

LED

Panel

Symbol

Status Description

Power

Indicaor

PWR

On(Green)

Card Powered

Off

Card Powered off

Master-Slave

Indicator

M/S

On(Green)

Master

Off

Slave

Fan

Indicator

FAN

On(Green)

Operating normally

Off

Operating abnormally

Operation

Indicator

RUN

On(Green, blink at 1

Hz)

Cards operating normally

On(Green, blink at 8

Hz)

System is loading (Booting

after the

boardcard is hot-plugged in)

Off

Operating malfunctioning

RJ-45 Interface Indicator

Port

On(Green)

The network connection of RJ-45

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indicator

interface is normal

Off

There is no network connection on
RJ-45 interface

On(Orange)

Receiving or sending data

1.4.2.9.3 Front Panel Interface Description

MRS-7604E-M44GT provides 44-port 10/100/1000M RJ-45 elec tronic port.

1.4.2.10 MRS-7604E-M1XFP12GX12GB

The MRS-7604E-M1XFP12GX12GB is switching module for the DCRS-7604E.
System status control, switch management, user acc ess control and management, and
network maintenances are performed here. The board can be inserted into first or second
slots of the chassis for Master-Slave redundancy. MRS-7604E-M1XFP12GX12GB
supports 2-layer and 3-layer wire-speed switchi ng and routing function of 12 1000Mbps
optical-electronic combos, 12 1000Mbps opticals and 1 10,000Mbps XFP interfaces, IPv6
wire-speed transmission.

1.4.2.10.1 Front Panel Diagram

MRS-7604E-M1XFP12GX12GB provides 12-port 1G optical-electronic combo,
12-port 1G optical and 1-port 10G XFP interface. 12-port 1G optical-electronic are combo
at the front, 12-port are 1G optical interface at the back.

The following is the sketch map of its front panel:

Fig 1-17 the Sketch Map of the Front Panel of MRS-7604E-M1XFP12GX12GB

1.4.2.10.2 Front Panel Indicator

The following is the instruction of the indicator lamps on the front panel of
MRS-7604E-M1XFP12GX12GB.

Table1-14 MRS-7604E-M1XFP12GX12GB indicator descripti on

LED

Panel

Symbol

Status Description

Power

Indicaor

PWR

On(Green)

Card Powered

Off

Card Powered off

Master-Slave

Indicator

M/S

On(Green)

Master

Off

Slave

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Fan

Indicator

FAN

On(Green)

Fan operating normally

Off

Fan not present or operating

abnormally

Operation

Indicator

RUN

On(Green, blink at 1

Hz)

Cards operating normally

On(Green, blink at 8

Hz)

System is loading (Booting

after the

boardcard is hot-plugged in)

Off

Operating malfunctioning

RJ-45 Interface Indicator

Port

Indicator

On(Green)

The network connection of RJ-45
interface is normal

Off

There is no network connection on
RJ-45 interface

On(Orange)

Receiving or sending data

SFP Interface Indicator

Status
Indicator

“Left

Light”

On (Green)

SFP transceiver network

connection is normal

Off

There is not network connection at

SFP interface
Transmission
Indicator

“Right

Light”

On (Green) Sending or receiving data

XFP Interface Indicator

Status
Indicator

Link

On (Green)

XFP transceiver network

connection is normal

Off

There is not network connection at

XFP transceiver
Transmission
Indicator

Act On (Green) Sending or receiving data

1.4.2.10.3 Front Panel Interface Description

MRS-7604E-M1XFP12GX12GB provides 24 SFP 1000Mbps optical fibre
transceivers, 12 RJ-45 1000Mbps electronic port slots and 1 XFP 10,000Mbps electronic
port.

1.4.2.11 MRS-7600E-12GX12GB and
MRS-7600E-2XFP12GX12GB

The MRS-7600E-12GX12GB is switching module for the 76 series switch and
implements 2-layer and 3-layer wire-speed switching and routing function of 12 1000Mbps

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optical-electronic combo, 12 1000Mbps optical interfaces, IPv6 wire-speed transmission.

The MRS-7600E-2XFP12GX12GB is switching module for the 76 series swi tch and
implements 2-layer and 3-layer wire-speed switching and routing function of 12 1000Mbps
optical-electronic combo, 12 1000Mbps optical and 2 10,000Mbps XFP interfaces, IPv6
wire-speed transmission.

1.4.2.11.1 Front Panel Diagram

MRS-7600E-12GX12GB provides 12 1000Mbps optical-electronic combo and 12
1000Mbps optic al interfaces. 12 1000Mbps electronic ports are combo ports at the front,
12 ports are 1000Mbps optical port at the back.

The following is the sketch map of its front panel:

Fig 1-18 the Sketch Map of the Front Panel of MRS-7600E-12GX12GB

The MRS-7600E-2XFP12GX12GB provides 12 1000Mbps optical-electronic combo,
12 1000Mbps optical interfaces and 2 10,000Mbps XFP interfaces. 12 1000Mbps
electronic ports are combo ports at the front, 12 ports are 1000Mbps optical ports at the
back.

The following is the sketch map of its front panel:

Fig 1-19 the Sketch Map of the Front Panel of MRS-7600E-2XFP12GX12GB

1.4.2.11.2 Front Panel Indicator

The following is the instruction of the indicator lamps on the front panel of
MRS-7600E-12GX12GB and MRS-7600E-2XFP12GX12GB.

Table1-15 MRS-7600E-12GX12GB and MRS-7600E-2XFP12GX12GB indicator

description

LED

Panel

Symbol

Status Description

Power

Indicaor

PWR

On(Green)

Card Powered

Off

Card Powered off

Operation

Indicator

RUN

On(Green, blink at 1

Hz)

Cards operating normally

On(Green, blink at 8

Hz)

System is loading (Booting

after the

boardcard is hot-plugged in)

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Off

Operating malfunctioning

RJ-45 Interface Indicator

Port

Indicator

On(Green)

The network connection of RJ-45
interface is normal

Off

There is no network connection on
RJ-45 interface

On(Orange)

Receiving or sending data

SFP Interface Indicator

Status
Indicator

“Left

Light”

On (Green)

SFP transceiver network

connection is normal

Off

There is not network connection at

SFP interface
Transmission
Indicator

“Right

Light”

On (Green) Sending or receiving data

XFP Interface Indicator

Status
Indicator

Link

On (Green)

XFP transceiver network

connection is normal

Off

There is not network connection at

XFP transceiver
Transmission
Indicator

Act On (Green) Sending or receiving data

1.4.2.11.3 Front Panel Interface Description

MRS-7600E-12GX12GB and MRS-7600E-2XFP12GX12GB provides 24 SFP

1000Mbps optical fibre transceivers, 12 RJ-45 1000Mbps electronic port slots.

MRS-7600E-2XFP12GX12GT provides 2 XFP 10,000Mbps optical ports.

1.4.2.12 MRS-7608E-M2

The MRS-7608E-M2 is main switching module for the DCRS -7608E, the important
functions such as system status control, route management, user access control and
management, network maintenances are performed here. The board can b e inserted i nto
M1 or M2 slots of the chassis switch and support Master-Slave redundancy.

1.4.2.12.1 Front Panel Diagram

The MRS-7608E-M2 provide 1 Console port (control platform), and 1
10/100/1000Base-Tx Ethernet port (management port).

The Front Panel is shown as below:

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Fig 1-20 MRS-7608E-M2 Front Panel

1.4.2.12.2 Front Panel Indicator

The following table describes the front panel indicators of MRS-7608E-M2:

Table1-16 MRS-7608E-M2 indicator description

LED

Panel

Symbol

Status Description

Power

Indicaor

PWR

On(Green)

Card Powered

Off

Card Powered off

Operation

Indicator

RUN

On(Green, blink at 1

Hz)

Cards operating normally

On(Green, blink at 8

Hz)

System is loading when the card is

hot plugged

On(Yellow, blink at 8

Hz)

System is shutting down

On(

Red, blink at 8

Hz)

Cards malfunction

Off

Cards are powered off and can be

removed

Master-Slave

indicator

M/S

On(Green)

Master

Off

Slave

Power
Supply

Module

Status

indicator:

POWER

OK

On(Green)

Power Supply Module operating

normally

Off

Power supply module

malfunctioning or not present (with

Fail off)

Fail

On(Yellow)

Power Supply Module malfunction

Off

Power supply module operating

normally or not present (with OK

off)

Fan Assembly

Status

indicator

FAN

OK

On(Green)

Fan operating normally

Off

Fan malfunctioning or not present

(with Alarm off)

Alarm

On(Yellow)

Fan malfunction

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Off

Fan operating normally or not
present (with OK off)

1.4.2.12.3 Front Panel Console

The MRS-7608E-M2 provides a RJ-45 (receptacle) Console s erial port. Users can
connect to background terminal computers via this port to perform system debugging,
configuration, maintenance, management and hos t software loading.

Table1-17MRS-7608E-M2 Console Port Description

Property Specification

Connector

RJ-45(receptacle)

Connector type

RS-232

Baud rate

9600bps(default)

Supporting Service

 Connects to character termi nals
 Connects to PC serial port and runni ng terminal

emulator on PC

1.4.2.12.4 Front Panel Management Port

The MRS-7608E-M2 provides a RJ-45 (rec eptacle) Et hernet port . Us ers can c onnec t
through this management port to backgrou nd t ermi nal c omput er for program loading or to
connect to remote devices for remote management (e.g., a managing workstation). Note:
when connecting to the host, a cross-over cable should be used.

Table1-18 MRS-7608E-M2 Management Port description

Property Specification

Connector

RJ-45(receptacle)

Connector type

 10/100/1000Mbps adapting



Cat 5(UTP): 300m

1.4.2.13 MRS-7608E-M3

The MRS-7608E-M3 is main switc hing module for the DCRS-7608E, the important
functions such as system status control, route management, user access control and
management, network maintenances are performed here. The board can b e inserted into
M1 or M2 slots of the chassis switch and support Master-Slave redundancy.

1.4.2.13.1 Front Panel Diagram

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The MRS-7608E-M3 provide 1 Console port (control platform), and 1
10/100/1000Base-Tx Ethernet port (management port).

The Front Panel is shown as below:

Fig 1-21 MRS-7608E-M3 Front Panel

1.4.2.13.2 Front Panel Indicator

The following table describes the front panel indicators of MRS-7608E-M3:

Table1-19 MRS-7608E-M3 indicator description

LED

Panel

Symbol

Status Description

Power

Indicaor

PWR

On(Green)

Card Powered

Off

Card Powered off

Operation

Indicator

RUN

On(Green, blink at 1

Hz)

Cards operating normally

On(Green, blink at 8

Hz)

System is loading when the card is

hot plugged

On(Yellow, blink at 8

Hz)

System is shutting down

On(

Red, blink at 8

Hz)

Cards malfunction

Off

Cards are powered off and can be

removed

Master-Slave

indicator

M/S

On(Green)

Master

Off

Slave

Power
Supply

Module

Status

indicator:

POWER

OK

On(Green)

Power Supply Module operating
normally

Off

Power supply module

malfunctioning or not present (with

Fail off)

Fail

On(Yellow)

Power Supply Module malfunction

Off

Power supply module operating

normally or not present (with OK

off)

Fan Assembly

Status

OK

On(Green)

Fan operating normally

Off

Fan malfunctioning or not present

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indicator

FAN

(with Alarm off)

Alarm

On(Yellow)

Fan malfunction

Off

Fan operating normally or not
present (with OK off)

1.4.2.13.3 Front Panel Console

The MRS-7608E-M3 pro vides a RJ-45 (receptacle) Console serial port. Users can
connect to background terminal computers via this port to perform system debugging,
configuration, maintenance, management and hos t software loading.

Table1-20MRS-7608E-M3 Console Port Description

Property Specification

Connector

RJ-45(receptacle)

Connector type

RS-232

Baud rate

9600bps(default)

Supporting Service

 Connects to character termi nals
 Connects to PC serial port and runni ng terminal

emulator on PC

1.4.2.13.4 Front Panel Management Port

The MRS-7608E-M3 provides a RJ-45 (receptacle) E thernet port . Users can c onnec t
through this management port to backgrou nd t ermi nal c omput er for program loading or to
connect to remote devices for remote management (e.g., a managing workstation). Note:
when connecting to the host, a cross-over cable should be used.

Table1-21 MRS-7608E-M3 Management Port description

Property Specification

Connector

RJ-45(receptacle)

Connector type

 10/100/1000Mbps adapting



Cat 5(UTP): 300m

1.4.2.14 MRS-7600E-24GB12GT and
MRS-7600E-2XFP24GB12GT

The MRS-7600E-24GB12GT is switching module for the 7600E series switch, which

supports MPLS VPN function and implements 2-layer and 3-layer wire-speed s witching

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and routing function of 12 1000Mbps electronic interfaces, 24 1000Mbps optical
interfaces, IPv6 wire-speed transmission.

The MRS-7600E-2XFP24GB12GT is switching module for the 7600E series switch,
which supports MPLS VPN function and implements 2-layer and 3-layer wire-speed
switching and routing function of 12 1000Mbps electronic interfaces, 12 1000Mbps optical
and 2 10,000Mbps XFP interfaces, IPv6 wire-speed transmission.

1.4.2.14.1 Front Panel

The MRS-7600E-24GB12GT provides 12 1000Mbps electronic interfaces and 24
1000Mbps optical interfaces.

The Front Panel view is shown below:

Fig 1-22 MRS-7600E-24GB12GT Front Panel View

MRS-7600E-2XFP24GB12GT provides 12 1000Mbps electronic interfaces, 24
1000Mbps optical and 2 10,000Mbps XFP interfaces.

The Front Panel view is shown below:

Fig 1-23 MRS-7600E-24GB12GT Front Panel View

1.4.2.14.2 Front Panel - Indicator

The following is the instruction of the indicator lamps on the front panel of

MRS-7600E-24GB12GT and MRS-7600E-2XFP24GB12GT.

Table1-22 MRS-7600E-24GB12GT and MRS-7600E-2XFP24GB12GT indicator

description

LED

Panel

Symbol

Status Description

Power

Indicaor

PWR

On(Green) Card Powered

Off

Card Powered off

Operation

Indicator

RUN

On(Green, blink at

1 Hz)

Cards operating normally

On(Green, blink at

8 Hz)

System is loading (

Booting after the

boardcard is hot-plugged in)

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Off

Operating malfunctioning

RJ-45 Interface Indicator

Port

Indicator

On(Green)

The network connection of RJ-45 interface

is normal

Off

There is no network connection on RJ-45

interface

On(Orange)

Receiving or sending data

SFP Interface Indicator

Status
Indicator

“Left

Light”

On (Green)

SFP transceiver network connection is
normal

Off

There is not network connection at SFP
interface

Transmissio

n Indicator

“Right

Light”

On (Green) Sending or receiving data

XFP Interface Indicator

Status
Indicator

Link

On (Green)

XFP transceiver network connection is
normal

Off

There is not network connection at XFP
transceiver

Transmissio

n Indicator

Act On (Green) Sending or receiving data

1.4.2.14.3 Front Panel Interface Description

MRS-7600E-24GB12GT provides 12 1000Mbps electronic interfaces and 24
1000Mbps optical interfaces.

MRS-7600E-2XFP24GB12GT provides 12 1000Mbps electronic interfaces, 24
1000Mbps optical and 2 10,000Mbps XFP interfaces.

1.4.2.15 MRS-7600E-12GX12GT (R2) and
MRS-7600E-2XFP12GX12GT (R2)

12-port optical-electronic combo and 12-port electronic interface line card
(MRS-7600E-12GX12GT(R2)): The switching module for the DCRS-7604E(R2), to
implement the layer2 and layer3 wire speed exchange and r outing function of 12-port 1 G
optical-electronic combo and 12-port 1G electronic interface and IPv6 wire speed
transmission function.

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Double 10G and 12-port optical-electronic combo and 12-port electronic interface line
card (MRS-7600E-2XFP12GX12GT(R2)): The switching module for the
DCRS-7604E(R2), implement the layer2 and layer3 wire speed exchange and routing
function of 12-port 1G optical-electronic combo, 12-port 1G electronic and 2-port 10G XFP
interface, and IPv6 wire speed transmissi on function.

1.4.2.15.1 Front Panel Diagram

MRS-7600E-12GX12GT (R2) provides twelve 1G optical combo ports, twelve 1G
electronic ports, where the twelve 1G optical ports and the last twelve 1G ele ctronic ports
are combo ports.

Fig 1-24 MRS-7600E-12GX12GT(R2) front panel view

MRS-7600E-2XFP12GX12GT (R2) provides two 10G XFP ports, twelve 1G optical
SFP ports, twelve 1G electronic SFP ports, where the twelve 1G optical ports and the last
twelve 1G electronic ports are combo ports.

Fig 1-25 MRS-7600E-2XFP12GX12GT(R2) front panel view

1.4.2.15.2 Front Panel Indicator

The description of front panel indicator of MRS-7600E-12GX12GT (R2) and
MRS-7600E-2XFP12GX12GT (R2) is as follows:

Table 1-23 MRS-7600E-12GX12GT (R2) and MRS-7600E-2XFP12GX12GT (R2)

indicator description

LED

Indicator

Panel

Sign

Status Meanings

Power
Indicator

PWR

On (Green) Network Interface Card power on
Off Network Interface Card power off

Running
Indicator

RUN

On (Green 1Hz

flash)

Network Interface Card running in normal
status

On (Green 8Hz

flash)

System loading (Network Interface Card

Booting after hot plug in)

Off Running status is in failure

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RJ-45 Interface indicator

Interface
Indicator

On (Green)

RJ-

45 Interface Network Connection is

normal

Off

There is not network connection at RJ-45
interface

On (Orange)

Sending or receiving data

SFP Interface Indicator

Status
Indicator

“Left
Light”

On (Green)

SFP tran

sceiver network connection is

normal

Off

There is not network connection at SFP

interface
Transmissio
n Indicator

“Right
Light”

On (Green) Sending or receiving data

XFP interface Indicator

Status
Indicator

Link

On (Green)

XFP transceiver network conn

ection is

normal

Off

There is not network connection at XFP

transceiver
Transmissio
n Indicator

Act On (Green) Sending or receiving data

1.4.2.15.3 Front Panel Interface Description

MRS-7600E-12GX12GT (R2) and MRS-7600E-2XFP12GX12GT (R2) provide 24

SFP 1G optical fibre transceivers and 12 RJ-45 1G electronic port slots.

MRS-7600E-2XFP12GX12GT (R2) provides two XFP 10G optical ports.

1.4.2.16 MRS-7600E-48GB (R2)

48-port 1000Mbps optical line card (MRS-7600E-48GB (R2)): The swit ching module
for the DCRS-7604E (R2), implement 2-layer and 3-layer wire-speed switching and
routing function of 48 1000Mbps optical interfaces, and IPv6 wi re-speed transmission.

1.4.2.16.1 Front Panel Diagram

MRS-7600E-48GB (R2) provides 48 1000Mbps optical interfac es.

The following is the sketch map of its front panel:

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Fig 1-26 the Sketch Map of the Front Panel of MRS-7600E-48GB(R2)

The ports in the above chart are port GB1－GB48 from the bottom-left corner to the
top-right corner. The indicator lamps of ports having odd index number are on the left side
of the port array, while the indicator lamps of ports having even index number are on the
right side. The lamps are green indicator lamps.

1.4.2.16.2 Front Panel Indicator

The following is the instruction of the indicator lamps on the front panel of
MRS-7600E-48GB (R2).

Table 1-24 the Instruction of Indicator Lamps of MRS-7600E-48GB(R2)

LED

Indicator

Panel

Sign

State Explanation

SFP Interface Indicator Lamps

State
Indicator
Lamp

On(green)

The network connection of SFP interface is
normal.

Off

There is no

network connection on SFP

interface

Transmissio

n Indicator

Lamp

On(green) SFP is receiving or sending data.

1.4.2.16.3 Front Panel Interface Description

MRS-7600E-48GB (R2) provides 48 SFP 1000Mbps optical transceiver interfaces.

1.4.2.17 MRS-7604E-M1XFP12GX12GT (R2)

The MRS-7604E-M1XFP12GX12GT (R2) is swit ching module for the DCRS-7604E
(R2). System status control, switch management, user access control and management,
and network maintenances are performed he re. The board can be inserted into first or
second slots of the chassis for Master-Slave redundancy. 12-port 1G optical-electronic
combo, 12-port 1G electronic and 2-port 10G XFP interface, and IPv6 wire speed
transmission function.

1.4.2.17.1 Front Panel Diagram

MRS-7604E-MIXFP12GX12GT (R2) provides 12-port 1G optical-electronic combo,
12-port 1G electronic and 1-port 10G XFP interface.

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Fig 1-27 MRS-7604E-M1XFP12GX12GT(R2) front panel view

1.4.2.17.2 Front Panel Indicator

The description of front panel indicator of MRS-7604E-M1XFP12GX12GT (R2) as
follows:

Table 1-25 MRS-7604E-M1XFP12GX12GT (R2) indicator description

LED

Indicator

Panel

Sign

Status Meanings

Power
Indicator

PWR

On (Green) Network Interface Card power on
Off Network Interface Card power off

Master-Slav

e indicator

M/S

On(Green)

Master

Off Slave

Fan
Indicator

FAN

On(Green)

Fan operating normally

On(Red)

Fan operating abnormally

Off

Fan not present

Running
Indicator

RUN

On (Green 1Hz

flash)

Network Interface Card running in normal
status

On (Green)

System loading (Network Interface Card

Booting after hot plug in)

Off Running status is in failure

RJ-45 Interface indicator

Status
Indicator

Shared

On (Green)

RJ-

45 Interface Network Connection is

normal

Off

There is not network connection at RJ-45

interface
Transmissio
n Indicator

On (Yellow) Sending or receiving data

SFP Interface Indicator

Status
Indicator

“Left
Light”

On (Green)

SFP transceiver network connection is

normal

Off

There is not network connection at SFP

interface
Transmissio
n Indicator

“Right
Light”

Flashes (Green) Sending or receiving data

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XFP interface Indicator

Status
Indicator

Link

On (Green)

XFP transceiver network connection is

normal

Off

There is not network connection at XFP

transceiver
Transmissio
n Indicator

Act Flashes (Green) Sending or receiving data

1.4.2.17.3 Front Panel Interface Description

MRS-7604E-M1XFP12GX12GT (R2) provides 12-port 1G optical-electronic combo,

12-port 1G electronic and 2-port 10G XFP interface.

1.4.2.18 MRS-7608E-MI (R2)

The MRS-7608E-MI (R2) is switching module for the DCRS-7608E(R2). System
status control, switch management, user access control and management, and network
maintenances are performed here. The board can be ins erted into M1 or M2 slots of the
chassis for Master-Slave redundancy.

1.4.2.18.1 Front Panel

The MRS-7608E-MI (R2) comes with 1 Console port (control console), 1
10/100Base-Tx Ethernet port (management port) and 1 CF card port.

The Front Panel view is shown below:

Fig 1-28 MRS-7608E-MI(R2) Front Panel view

1.4.2.18.2 Front Panel - Indicator

The following table describes the front panel indicators of MRS-7608E-MI (R2):

Table 1-26 MRS-7608E-MI (R2) indicators description

LED Panel Symbol Status Description

Power

Indicator

PWR

On (Green) Card powered
Off Card powered off

Operation

indicator

RUN

On (Green, blink at 1

Hz)

Cards operating normally

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On (Green, blink at 8

Hz)

System is loading

Off Cards malfunction

Master-Slav

e indicator

M/S

On (Green) Master
Off Slave

Power

Supply

Module

Status

indicator:

POWER

POWER _OK

On (Green)

Power Supply Module operating

normally

Off

Power supply module

malfunctioning or not present

POWER_Fail

On (Yellow) Power Supply Module alarm

Off

Power supply module not alarm or
not present

Fan

Assembly

Status

indicator:

FAN

FAN_OK

On (Green) Fan operating normally
Off Fan malfunctioning or not present

FAN_ALARM

On (Yellow) Fan alarm
Off

Fan operating not alarm or not
present

Ethernet
manageme

nt port

indicator

ACT

On (Green)

Ethernet port Sending or receiving
data

Off

Ethernet port Sending or receiving
no data

LINK

On (Green) Ethernet port link successfully
Off Ethernet port link unsuccessfully

CF card

status

indicator

CF-STATUS

On (Green)

CF card is in position

and can

work

Off CF card not present

1.4.2.18.3 Front Panel – Console Port

The MRS-7608E-MI (R2) provides a RJ-45 (receptacle) Cons ole serial port. Users
can connect to hosts via this port to perform system debugging, configuration,
maintenance, management and host software loading.

Table 1-27 MRS-7608E-MI(R2) Console description

Property Specification

Connector

RJ-45 (receptacle)

Connector type

RS-232

Baud rate

9600bps (default)

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Supporting service

 Connects to character terminals
 Connects to PC serial port and run ning terminal emulator

on PC.

1.4.2.18.4 Front Panel – Management Port

The MRS-7608E-MI (R2) provides a RJ-45 (receptacle) Ethernet port. Users can
connect through this management port to hosts for program loading or to connect to
remote devices for remote management (e.g., a managing workstation). Note: when
connecting to the host, a cross-over cable should be used.

Table 1-28 MRS-7608E-MI (R2) management port descript ion

Property

Specification

Connector

RJ-45 (Receptacle)

Connector type



10/100Mbps auto sensing



Cat 5 UTP: 100 m

1.4.2.18.5 Front Panel – CF Card Interface

MRS-7608E-MI (R2) provides a standard CF card slot, and supports hot-swapping.
CF card content supports 256MB/512MB/1GB, it can be save editi on, configuration files
and so on, so as to conveniency switch software update. Notice: It is suggested to ues
DCN CF card, it is not assure the compatibility with other CF card.

1.4.3 Interface description

DCRS-7600E series provide 1000Mbps SFP electric interfaces, RJ-45 (receptacle)
Console serial ports and 10,000Mbps XFP electric interfaces.

Interface description as follow:

Table 1-29 DCRS-7600E series interface descript i on

Interface Format Specs

RJ-45 port

 10/100/1000Mbps self-adapting
 MDI/MDI-X network wire type self-adapting



5 kinds of Unshielded Twisted Pair(UTP): 100
metres

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

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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

XFP

• XFP-SR transceiver
10GBase-SR XFP (850nm, 62.5μm MMF 32m, 50
μm 500MHz/km MMF 85m, 50μm 2000MHz/km
MMF 300m)

• XFP-LR transceiver
10GBase-LR XFP (1310nm, SMF,10km)

• XFP-ER transceiver
1550nm SMF, 40km

• XFP-ER-70 transceiver

1550nm SMF, 70km

1.4.4 Power supply

1.4.4.1 MRS-PWR-A1-AC-B

DCRS-7604E uses 1 +1 redundant power supplies, and s upplies agile power suppl y

weave, to realize high reliability for users by least cost.

1.4.4.1.1 MRS-PWR-A1-AC-B (Alternating Current Power Module for
400W)

MRS-PWR-A1-AC-B is an Alternating Current Power module for 400W, which

support hot plug and redundance backup.

1.4.4.1.2 Power module Front Panel

The front panel of MRS-PWR-A1-AC-B is equipped with power supply switches,
power supply indicators as well as ventilating and cooling port and a handle for ins erting
and pulling out the modules.

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The Front Panel view is shown below:

Fig

1-29 MRS-PWR-A1-AC-B Front Panel View

1.4.4.1.3 LED

The LED description of MRS-PWR-A1-AC-B is as follows

Table 1-30 The Description of MRS-PWR-A1-AC-B LED

LED

Panel

Label

Status Description

Output LED

Output
Good

On Green

Power Module Output Status is okay

Off

Power Module has no output

Abort LED Fault

On Yellow

Faulty Power Module /Not turning-on

The Output Switch

Off

Power Module Working Fine

1.4.4.1.4 Switch of power supply for front panel

MRS-PWR-A1-AC-B provides a power supply switch for controlling the power output
of control module. Under normal operation conditions, the switches for power supply
modules shall be turned on currently. When the switch of one power supply module is
turned on and another is turned off, the FAULT indicator of the module will be on to
suggest the users to turn on the switch so as to utilize 1+1 redundant backup.

1.4.4.2 MRS-PWR-A1-DC-B

DCRS-7604E us es 1 +1 redundant DC power sup plies. But not suggest that the AC

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power and DC power be used mixed.

1.4.4.2.1 MRS-PWR-A1-DC-B (Direct Current Power Module for 400W)

MRS-PWR-A1-DC-B is a Direct Current Power module for 400W, which support hot
plug and redundance backup.

1.4.4.2.2 Power module Front Panel

The front panel of MRS-PWR-A1-DC-B is equipped with power supply switches,
power supply indicators as well as ventilating and cooling port and a handle for ins erting
and pulling out the modules. On panel’s right hand is DC connector, supports -48VDC
input. The power supply DC connector has three input terminal , they are RTN, -48V and
PG from the top down, and the meanings are shown below:

RTN: power supply reflow

-48V: -48V input

PG: plane ground

The Front Panel view is shown below:

Fig

1-30 MRS-PWR-A1-DC-B Front Panel View

1.4.4.2.3 LED

The LED description of MRS-PWR-A1-DC-B is as follows:

Table 1-31 the Description of MRS-PWR-A1-DC-B LED

LED

Panel

Label

Status Description

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Output LED

Output

Good

On Green

Power Module Output Status is okay

Off

Power Module has no output

Abort LED Fault

On Yellow

Faulty Power Module /Not turning-on

The Output Switch

Off

Power Module Working Fine

1.4.4.2.4 Switch of power supply for front panel

MRS-PWR-A1-DC-B provides a power supply switch for controlling the power output
of control module. Under normal operation conditions, the switches for power supply
modules shall be turned on simultaneous. When the switch of one power supply module is
turned on and another is turned off, the FAULT indicator of the module will be on to
suggest the users to turn on the switch so as to utilize 1+1 redundant backup.

1.4.4.3 MRS-PWR-B1-AC-B

DCRS-7608E uses 2 +1 redundant power supplies, three power modules can act as
backups for each other. During normal operation, all three power modules each take one
third of the load. If one of the modules fails or is not present, the other two power modules
will supply power for the whole switch, and the corresponding POWER/Fail warning
indicator for the failed/missing module will illumi nate, prompting the replacement of the
failed module. The warning indicator will turn off after the failed module is replaced or
recovers.

The DCRS-7608E power module is installed in the lower section of the chassis, and
connects to the power board of the switch. All the power modules attach to the chassis
with 2 screws, respectively. When replacing the power modules, the chassis need not to
be opened, just remove the 2 fastening screws t o take out the power module requiring
replacement.

1.4.4.3.1 MRS-PWR-B1-AC-B

When powered by AC inputs, the AC power module MRS-PWR-B1-AC-B and
corresponding AC distribution box should be used i n the DCRS-7608E. The input voltage
of the MRS-PWR-B1-AC-B i s 110 V/220 VAC, with ranges between 90 ~ 264 VAC and
frequency between 50 ~ 60 Hz, the maximum output power is 600W.

1.4.4.3.2 Power module Front Panel

There are vents (with dust gauzes), 2 fastening screws and handle for replac ing the
modules on the front panels of MRS-PWR-B1-AC-B.

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The Front Panel view is shown below:

Fig 1-31 MRS-PWR-B1-AC-B Front Panel view

1.4.5 Power Distribution Box

1.4.5.1 DCRS-7604E Power Distribution Box

There is a special A.C. distribution box on the backboard of DCRS-7604E switch.

In generally, the enterprises users usually ask for the 220VAC access. The panel of
A.C. distribution box is equipped with two 220VAC socket for provide power suppl y to the
equipment. At the same time, it provides power s upply to the two po wer supply module s.
After the D.C. output is disposed on the backplane, it provides power supply to the
modules and fan tray. The lower part of the power supply socket is equipped with a locking
ring, which is used to fix the power supply lines t o prevent unex pected dis connection and
make the wiring more convenient. The distribution box is equipped with a grounding
terminal at its lower right part, which is used for grounding the switch.

The Front Panel view is shown below:

Fig

1-32 DCRS-7604E Power Distribution Box Panel view

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1.4.5.2 DCRS-7608E Power Distribution Box

There is a dedicated AC distribution box or DC distributi on box in the lower section of
DCRS-7608E backplane, distributing power supply for the corresponding AC or DC power
module. A grounding post is provided on the chassis on both sides of the distribution box
for switch grounding. There is also an extraction handle, which is intended for the
installation and removal of the distribution box only. Never lift or move the switch with

this handle!

1.4.5.2.1 AC Power Distribution Box

Enterprise network users usually require equipment to have 220 VAC input, the AC
power modules and AC distribution box can satisfy t his application. Three 22 0V/110 VAC
power input sockets are provided on the panel of the DCRS-7608E AC distribution box.
Input AC power will first pass through protective circuits, s uch as the AC filter, lightning
protection tube, and then provide power for the three AC power modules. The other
modules and fan trays are powered only after the DC output from the power modules are
equalized and coupled. A wiring clip is provided above each 220V/110 VAC input socket
for the positioning of power cords and easier wi ring. In addi tion, on the left side of the AC
distribution panel is a power supply switch used to control the modules’ power output .
Please turn this power supply switch on during normal operation of the DCRS-7608E.

The Front Panel view is shown below:

Fig

1-33 DCRS-7608E AC Power Distribution Box

1.4.6 System Backplane

The system board of DCRS-7604E serial switch is located inside the switch,
providing interconnectivity in the high speed data link s between management switching
modules, network int erface modules and between all managem ent and control signals of
various cards. A backplane has been installed in the unit chassis. The backplane provides
the following functions:

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 Provides communication channel for cards to achieve interconnectivity of

various signals

 The backplane is powerless
 Supports the hot-swapping of various cards
 Supports Mainboar d Master-Slave swap
 Auto identifi cation of all slots
 Distributed power s uppl ies

 Introduction of monitoring signals f or fans and power supplies

1.4.7 Fan Tray

1.4.7.1 DCRS-7604E Fan Tray

Three fan assemblies (MRS-7604E-FAN) can be configured in the DCRS-7604E, and
installed in a horizontal configuration into the fan module slots in the switch’s upper front
panel. The three fan assemblies cover the entire board area, ensuring sufficient ventilation
for the devices, hence enhancing the stability of devices even under high temperature
environments. Each fan assembly consists of 2 axial fans, which are protected by the fan
tray to prevent bodily injury. Please note that the fan blades still spin at a high speed when
disconnected from the device during operation, to avoid bodily injur y do not touch the
spinning blades.

Fig 1-34 MRS-7604E-FAN Outlook

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Fig 1-35 MRS-7604E-FAN Front Panel View

1.4.7.2 DCRS-7608E Fan Tray

Three fan assemblies (MRS-7608E-FAN) can be configured in the DCRS-7608E, and
installed in a horizontal configuration into the fan module slots in the switch’s upper front
panel. The three fan assemblies cover the entire board area, ensuring sufficient ventilation
for the devices, hence enhancing the stability of devices even under high temperature
environments. Each fan assembly consists of 2 axial fans, which are protected by the fan
tray to prevent bodily injury. Please note that the fan blades still spin at a high speed when
disconnected from the device during operation, to avoid bodily injur y do not touch the
spinning blades.

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Fig

1-36 MRS-7608E-FAN Outlook

Fig 1-37 MRS-7608E-FAN Front Panel View

1.4.8 Dust Gauze

1.4.8.1 DCRS-7604E Dust Gauze

The DCRS-7604E’s dust gauze lies under the board rack and prevents large particles
in the air from entering the switch. The dust gauze should be inserted from the front of the
DCRS-7604E in a horizontal position.

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Fig

1-38 DCRS-7604E Dust Gauze Outlook

1.4.8.2 DCRS-7608E Dust Gauze

The DCRS-7608E’s dust gauze lies under the board rack and prevents large particles
in the air from entering the switch. The dust gauze should be inserted from the front of the
DCRS-7608E in a horizontal position.

Fig

1-39 DCRS-7608E Dust Gauze Outlook

1.4.9 Rear Panel

1.4.9.1 DCRS-7604E Rear Panel

The rear panel of the DCRS-7604E covers the switch backplane. To ensure safe

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operation of the switch, please do not open the rear panel. There are two reversible
handles on the rear panel; they are us ed only for the installation and removal of the rear
panel. Never lift or move the switch with these handles! The rear panel is shown below:

FIG

1-40 DCRS-7604E Rear Panel View

1.4.9.2 DCRS-7608E Rear Panel

The rear panel of the DCRS-7608E covers the switch backplane. To ensure safe
operation of the switch, please do not open the rear panel. There are two reversible
handles on the rear panel; they are us ed only for the installation and removal of the rear
panel. Never lift or move the switch with these handles! The rear panel is shown below:

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FIG 1-41 DCRS-7608E Rear Panel View

1.4.10 Side Panels

1.4.10.1 DCRS-7604E Side Panels

There are several rows of ventilation openings in the left and right sides of the switch,

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as shown above.

FIG

1-42 DCRS-7604E Side Panels View

Please do not block the ventilation openings and ensure that enough clearance is left
on both sides of the switch for air circulat ion. Failure to do so can cause the chassis to
overheat and the system to fail, or damage to components.

1.4.10.2 DCRS-7608E Side Panels

There are several rows of ventilation openings in the left and right sides of the switch,
as shown below.

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FIG

1-43 DCRS-7608E Side Panels View

Please do not block the ventilation openings and ensure that enough clearance is left
on both sides of the switch for air circulat ion. Failure to do so can cause the chassis to
overheat and the system to fail, or damage to components.

1.5 System Features

1.5.1 DCRS-7604E System Features

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Table 1-32 DCRS-7604E System Features

Basic Configuration 4 sl ots

Hot swap Yes

Failover design

Core part redundant hot swapping
Power supplies redundant hot swapping

Status indicator

Port: Traffic, LINK
General: Power status, system status, hot-swap

indicator

Weight 30KG (Max full configuration weight)

Physical Dimensions 440mm x266mm x421mm (W x H x D)

Relative humidity 10% ~ 90% with no condensing

Operating

Temperature

0°C ~ 45°C

Power Supplies

Nominal Input Voltage
AC: 90 ~ 264 VAC, 50 ~ 60Hz

DC: -36～-72VDC

(supporting 1+1 redundant backup of power module s)

Power Consumption

≤ 400 W

1.5.2 DCRS-7608E System Features

Table 1-33 DCRS-7608E System Features

Basic Configuration 10 sl ots

Hot swap Yes

Failover design

Core part redundant hot swapping
Power supplies redundant hot swappable

Status indicator

Port: Traffic, LINK
General: Power status, system status, hot-swap

indicator

Weight 65KG (Max full configuration weight)

Physical Dimensions 436mm x 797mm x 478mm (W x H x D)

Relative humidity 10% ~ 90% with no condensing

Operating

Temperature

0°C ~ 45°C

Power Supplies Nominal Input Voltage

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AC: 90 ~ 264 VAC, 50 ~ 60Hz

(supporting 2+1 redundant backup of power module s)

Power Consumption ≤ 1200 W

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Chapter 2 Hardware Installation

2.1 Installation Notice

During the installation and use of the DCRS-7600E Switch, please follow the safety
guidelines listed below.

2.1.1 Basic Requirements

2.1.1.1 Site Requirements

The DCRS-7600E series Switch must be used indoors, and have the following
requirements:

Ambient temperature: 0 ~ 40°C

Humidity: 10% ~ 90%, non-condensing

The DCRS-7600E series is equippe d with a fan assembly for providing the switch
with an appropriate level of cooling; you can plac e the switch on a workbench or rack.
Ensure the following:

 The rack or workbench should be well ventilated. For sufficient air circulation, it

is recommended to mount the switch on a 19″ standard rack with sufficient
spacing. Air conditioning is recommended in areas wit h high temperatures in
the summer.

 To cool the internal circuits, the switch comes with internal fan assemblies. To

maintain proper air circulation through the switch chassis, we recommend t hat
you maintain a minimum 100mm separation between the chassis air intake or
the chassis air exhaust and any walls. Make sure that all air intakes and
exhausts on the system remain unobstructed. Do not stack heavy items on the
switch.

 Make sure the rack or workbench is strong enough to support the weight of a

fully configured switch.

 Make sure the rack or workbench is well grounded; if the workbench is not

grounded, it should be placed near a grounding conductor to provide easy
ground connection for the switch.

2.1.1.2 Temperature and Humidity Requirements

To maximize the switch’s performance and lifespan, the site should maintain a

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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 s crew 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. 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 ~ 40°C

40～65% 10～90%

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 t he 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 may occur during an air-conditioning system failure, and normal
operation conditions should be recovered within 5 hours.

2.1.1.3 Dust and Particles

Dust is harmful to the safe operation of the DCRS-7600E 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 reduce d
product lifespan, but also increased chance of communication failures. The recommended
values for dust content and particle diameter in the site are shown below:

Max. Diameter (µm) 0.5 1 3 5
Max. Density

(particles/m³)

1.4×107 7×105 2.4×105 1.3×105

In addition, salt, acid and sulfide in the air are also harmful to the switch. Such

Notice

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harmful gases will aggravate metal corrosion and the aging of some parts. The chosen
site should avoid harmful gases, such as SO

2

, H2S, NO2, NH3 and Cl2, etc. The table

below details the threshold values.

Gas

Average (mg/m³)

Max (mg/m³)

SO2

0.2

1.5

H2S 0.006 0.03
NO2 0.04 0.15
NH3 0.05 0.15
Cl2 0.01 0.3

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 preventi ng E SD damage:

1. Ensure proper earth grounding of the device

2. Perform regular cleaning to reduce dust

3. Maintain proper temperature and humidity

4. Always wear an ESD wrist strap and antistatic uniform when in contact with circuit

boards

2.1.1.5 Anti-interference Requirements

All sources of interference, whether from the device/system itself or the outside
environment, will affect operations in various ways, such as capacitive coupli ng, induct ive
coupling, electromagnetic radiation, common impedance (including the grounding system)
and cables/lines (power cables, signal lines, and out put lines). The following should be
noted:

1. Precautions should be taken to prevent power source interruptions

2. Provide the system with a dedicated grounding, rather than sharing the g rounding

with electronic equipment or lightning protection devices

3. Keep away from high power radio transmitters, radar transmitters, and high frequency

strong circuit devices

4. Provide electromagnetic shielding if necessary

2.1.1.6 Rack Configuration

The dimensions of the DCRS-7600E are designed to be mounted on a standard 19’’
rack, DCRS-7604E’s dimensions are 440mm x 266mm x 421mm (W x H x D).

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DCRS-7608E’s dimensions are 436mm x 797mm x 478mm (W x H x D). Please ensure
good ventilation for the rack.
 Every device in the rack will generate heat du ring operation, theref ore 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 prev ent the rack

frame from obstructing the switch ventilation openings. Be sure to check the

positioning of the switch after installation to avoid the aforement ioned.

If a standard 19’’ rack is not available, the DCRS-7600E 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.

2.1.1.7 Power Supply Requirements

The DCRS-7600E is designed t o use modular switching power suppl ies. The power
input specification is shown below:

Nominal Input Voltage:
AC: 90 ~ 264 VAC, 50 ~ 60Hz
DC: -36 ~ -72VDC
DCR-7604E total power consumption: ≤400W
DCR-7608E total power consumption: ≤1200W

Before installing the power modules, please check the power input to ensure proper
grounding of the power supply system. The input source for the switc h should be reliable
and security, a voltage adaptor can be used if necessary. The building’s circuit protection
system should include in a fuse or circuit-breaker of no greater than 240V, 10A. It is
recommended to use a UPS for more reliable power supply.

Improper power supply system grounding, extreme fluctuation of the input source,
and transients (or spikes) can result in larger error rate, or even hardware damage.

2.1.2 Safety Guidelines

1． Disconnect power supplies from the chassis before disassembly or moving the

switch.

Notice

Notice

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2． Install the switch in a clean area, ensuring proper temperature and humidity

conditions.
3． Keep the device accessories in a safe place.
4． When handling modules, always handle the modules by the edge, avoid contact

with integrated components and printed circuits. Prevent electrostatic discharge

damage to the integrated components and printed circui ts.
5． Keep maintenance tools in a safe place.
6． Do not wear loose clothing that may catch on devices, also remember to fasten

ties or scarves and roll up your sleeves.
7． If the environment may cause harm to eyes, be sure to wear a pair of protective

goggles.
8． Do not perform any operation that may result in bodily injury or damage to the

device.
9． When cleaning the switch, do not use a damp cloth to wipe the switch and never

wash the switch with liquids.

2.1.3 Safety Warning

1. Safety warnings appear throu ghout this publication, referring to operations that

may harm you if performed incorrectly.

2. Read through the installation i nstruction carefully before operating the system.

3. Only trained and qualified personnel should be allowed to install, replace, or

service the switch.

4. Disconnect power supplies from the chassis before disassembly or moving the

switch.

5. The final configurati on of the product must abide by all national laws and codes.

6. The final configuration of the product must abide by in point national laws and

codes.

2.1.4 Hot Line Work Safety Guidelines

1. Before working on equipment that is connected to power lines, remove jewelry

(including rings, necklaces, watches and bracelets). Metal objects will cause short

circuits and damage the device when in contact with both powered items and th e

ground.

2. An improper connection between the device and power sockets may be

hazardous.

3. Only trained and qualified personnel should be allowed to operate and maintain

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the device.

4. Reading through the installation guidel ines before powering on the system.

! Watch out for potential dangers, e.g. wet floors, ungrounde d power lines, and worn

power lines;

! Have an emergency switch installed inside the work shop, so that power can be cut off

promptly should an accident occur;

! Do not work alone if potential dangers are present;
! On the event of an accident, take the following measures.

Measure1: Power down the system;
Measure2: Make emergency calls if required;
Measure3: Determine whether the victim requires immediate treatment and take
appropriate action;
Measure4: If possible, send someone for medical help; otherwise, consider the damage
and seek help.

2.2 Preparing for Installation

After verifying site requirements, please check the contents of the swi tch container
and accessory kit. (If you are concerned that any item is missing or an incorrect it em has
been supplied, please contact your dealer as soon as possibl e.)

2.2.1 Checking Switch Hardware Configuration and
Accessories

Unpack the container to verify the accessory by incasement bill.

2.2.2 Required Tools and Fixings

Required tools



cross screwdrivers

 Flat-blade screwdriver
 ESD-preventive wrist strap

Connection
cables

 Serial port cable
 Multi-mode fiber cable

Notice:

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 Single-mode fiber cable
 Category 5 cable wit h RJ-45 connector

2.3 Hardware Installation

The installation of the DCRS-7600E includes the following:
 Switch mounting

 Desktop installation

 Rack-mounting the switch

 Switch grounding
 Cards and modules installation
 Connecting to the Console

 Connecting to the Console port

 Connecting to the Management Port

 Connecting to the Ethernet port

 SFP transceiver installation

 Install the SFP transceiver in the SFP slot

 Cable/Fiber connection

 Ethernet cable c onnection

 Fiber cable connection

 Power supply connection

2.3.1 Switch Installation

2.3.1.1 Desktop installation

 Note:

● Choose a smooth level workbench

● Verify that the workbench is strong enough to support the DCRS-7604E’s fully

configured weight

● Plan a good position for your DCRS-7604E that is easy to operate and has an
appropriate power source and grounding point.

● Place the DCRS-7604E safely on the workbench, avoid obstructions on any side

of the switch.

To avoid damage, do not place any weight on the switch.

Notice

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2.3.1.2 Rack-mounting DCRS-7600E series

 Note:

Before mounting the DCRS-7600E series int o the rack, verify that the mounting
positions of the rack are correct. Preposition of the mounting points may result in
inadequate spacing between the switch front panel and the rack front door, and the
rack front door may be unable to be closed with cables and fiber cables c onnected.
Please keep a 10 mm spacing between the switch front panel and the rack front door .

Verify the following before installation: the rack is stably positioned; all modules
inside the chassis are fully installed; no obstructions are pres ent ins ide or around the
rack; the switch is situated near the rack for ease of installation.

 Installation Steps

Step 1: Attach the 2 hangers on the DCRS-7600E series with screws provided in

the accessory kit.
Be sure to attach the hangers in the correct direction, otherwise the switch
will not be able to mount into a standard rack.

Note that the hangers are not weight bearing. They are used to fast en the

switch. The mounting Shelf or sliding rails (bolt to the rack) will support the

switch. The figure below shows the steps for mounting the hangers:

Fig 2-1 Installing DCRS-7604E Switch Hangers

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Fig 2-2 Installing DCRS-7608E Switch Hangers

Step 2: Put the hanger-mounted switch smoothly int o a standard 19’’ rack.

Because of the size and weight of a DCRS-7600E series, 2 people are
required to complete the installation. With a person standing on each side of
the chassis, grasp the chassis handle in the lower side panel with one hand,
and use the other hand near the top of the chassis for balance. Slowly lift the
chassis in unison and carry it to the rack. Lift the DCRS-7600E series to a
position a little higher than the mounting shelf or sliding rails, resting the
chassis on the shelf/rails, and then carefully slide the chassis into the rack .
Be sure to align the hangers and mounting holes in the rack column.

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Step 3: Fasten the DCRS-7600E series to the rack wi th the screws provided.

Bolt the hangers to the matching holes in the rack colum n with the screws
provided. Be sure to tighten the screws smoothly. The DCRS-7600E series
should now be securely attached to the equipment rack.
The procedure is shown below:

Fig2-3 Rack-mounting DCRS-7604E

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Fig2-4 Rack-mounting DCRS-7608E

2.3.1.3 Wearing an ESD Wrist Strap

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An ESD Wrist Strap must be worn during the installation of the switch. To prevent any

damage occurring to the device, avoid contact between the printed circuit boards and your
clothing. Avoid bodily contact with components on the circuit boards if possible.

To wear an ESD Wrist Strap:

Step 1: place your hand into the ESD wrist strap.
Step 2: tighten the fastener and ensure that it makes maximum contact with the skin.
Step 3: Insert the equipment end of t he strap into the antistatic socket (indicated by a n
ESD symbol) in the switch front panel.

2.3.2 Switch grounding

A good grounding system is the groundwork for the smooth and safe operation of the

DCRS-7600E series, and an excellent way to prevent lightning strikes and resistance
interference. Please follow the switch grounding specification instructions, verify the
installation site’s grounding condition and ensure proper grounding accordingly.

 Proper grounding

When using an AC power source, the device mus t be grounded with the green
and yellow ground cables; otherwise, shock hazards may occur when insulation
resistance between the internal power supply and the chas sis degrades.
 Lightning protection grounding

The lightning protection system is an independent system consisting of a
lightning rod, conductor and connection joint with the grounding system. The
grounding system usually is shared with the powe r reference grounding and green
and yellow ground cable grounding. Lightning protection grounding is a building
requirement, not a specific requirement of the switch.
 Electromagnetic compliance grounding

This refers to the grounding to comply with switch electromagnet ic compatibility
requirements, including shielded grounding, filter grounds, noise, and interference
control and level reference. The overall grounding requirements are the sum total of
the above. Ground resistance value should be less than 1 ohm.

The DCRS-7600E series provides chassis grounding post in the lower rear
chassis, marked as “GND”. Chassis protection grounding should be properly
connected to the rack grounding connector

The ground cabling procedures are listed below:
Step 1: remove the nuts from the rear chassis grounding posts
Step 2: wrap one end of the green and yellow grounding cable to the grounding posts
Step 3: attach the grounding post nut and tighten well

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Step 4: attach the other end of the grounding cable to the rack grounding connector

Note:

 The grounding cable should be made of a good conductor, and the diameter

should be determined by the possible maximum c urrent that may pass through.

 Bare conductor cabling is forbidden.
 Ground resistance value: the combined grounding resis tance should be less than

1 ohm.

2.3.3 Card and module installation

The DCRS-7600E series is a rack -mounting device, various cards and modules are

available.
Basic configuration: chassis, power supply modules (optional 1 +1 redundant), system
backplane, fan tray, dust gauze, distribution box. The above parts have been mounted
upon shipment; please verify they are properly loc ked before installation.

2.3.3.1 Removing and Installing the Cards

The installation procedure is the same for all cards, as shown below:

Step 1: Power down the switch (Hot-swapping is supported by optional cards for the

switch. However, for better convenience, it is recommended to power down the

switch before installing the cards, if no module in the switch is running.)

Step 2: Ensure proper grounding of the switch
Step 3: Put on an ESD wrist strap before contact with the swit ch circuit, and make sure

the ESD wrist strap is connected securely to the ESD connector in the switch’s

front panel.

Step 4: Loosen the panel fasteners locking back plate counterclockwise and remove the

back plate.

Step 5: Insert the optional module into the slot, you can use the metal handle on the front

plate of the module to ensure good contact. Then lock the module wit h panel

fasteners in the front plate.

2.3.3.2 Removing and installing the Dust Gauze

Dust gauze is provided in the right section of the DCRS-7600E series, which can be

installed and removed from the back of the switch. The dust gauze is meant to prevent
large debris or particles in the air from being ingested into the switch. Please perform
cleaning on a regular basis according to the site conditi ons.

 Loosen the 2 panel fasteners in the dust gauze

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 Draw the dust gauz e out smoothly by holding the 2 screws
 Clean the dust gauze with a brush (never wash with any liquid)
 Insert the gauze back to its original position in the switch
 Tighten the panel fasteners.

Note: The dust gauze is installed on switch chassis shipment.

The installation and removal of the dust gauze is shown below:

Fig2-5 Installation and removal of the DCRS-7604E dust gauze

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Fig2-6 Installation and removal of the DCRS-7608E dust gauze

2.3.3.3 Removing and Installing the Fan Tray

2.3.3.3.1 Removing and Installing the DCRS-7604E Fan Tray

The DCRS-7604E has two fan trays in the left section of the switch, and can be

serviced from the front. The installation and removal of the fan tray is relatively sim ple. To
install, just hold the fan tray i n the correct direction, align with the corresponding s lot and
push to secure. Tighten the panel fasteners in the font panel. Upon removal, first loos en
the 2 screws in the front panel of the fan tray, hold the handle in the front panel of fan tray
with your middle and ring fingers, press t he locker slightly down, and the f an tray can be
drawn out smoothly.

Note: The fan trays are installed on switch chassis shipment.
The installation and removal of a fan tray is shown below:

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Fig2-7 The installation and removal of DCRS-7604E fan tray

2.3.3.3.2 Removing and Installing the DCRS-7608E Fan Tray

The DCRS-7608E has three fan trays in the upper section of the switc h, and can be

serviced from the front. The installation and removal of the fan tray is relativel y simple. To
install, just hold the fan tray in the correct direction, align with the corresponding s lot and
push to secure. The locker in the front panel of the f an tray will lock automatical ly. Upon
removal, hold the handle in the front panel of fan tray with your middl e and ring fingers,
press the locker slightly down, and the fan tray can be drawn out smoothly.

Note: The fan trays are installed on switch chassis shipment.
The installation and removal of a fan tray is shown below:

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Fig2-8 The installation and removal of DCRS-7608E fan tray

2.3.3.4 Removing and Installing Power Supply Modules

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2.3.3.4.1 Removing and Installing DCRS-7604E Power Supply Modules

The DCRS-7604E emplo ys a 1 +1 redundant power supply module combination; all

two modules will work during normal operation. In case one module fails, it can be
replaced while the system is operating without pres enting an elec trical haz ard or damage
to the system. The procedures are provided below:

Step 1: First, turn off the switch in the front panel of the power supply module to be

replaced

Step 2: Loosen the 2 panel fasteners in the front panel of the power supply module

to be replaced by turning the screwdriver counter cl ockwise

Step 3: Hold the handle in the upper front panel of the power supply module, and

draw out the power supply module firmly and smoothl y

Step 4: Turn off the switch in the front panel of the new power supply module, use

the new power suppl y module and replace the failed module. Tighten the
panel fasteners in the font panel

Step 5: Turn on the switch in the front panel of the power supply module, successful

replacement will be indicated by the green OUTPUT GOOD indicator on the
front panel of the power supply module being illuminated and by the yello w
Fail indicator not illuminating.

Installation of a power supply module is shown below:

Fig 2-9 The installation and removal of DCRS-7604E power supply modules

2.3.3.4.2 Removing and Installing DCRS-7608E Power Supply Modules

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The DCRS-7608E employs a 2 +1 redundant power supply module combinations, all

three modules will work during normal operation. In case one module fails, it can be
replaced while the system is operating without pres enting an elec trical haz ard or damage
to the system. The procedures are provided below:

Step 1: Loosen the 2 panel fasteners in the front panel of the power supply module

to be replaced by turning the screwdriver counter cl ockwise

Step 2: hold the handle in the upper front panel of the power supply module, and

draw out the power supply module firmly and smoothly
Step 3: Use a new power supply module and replace the failed module
Step 4: Tighten the panel fasteners in the font panel
Step 5: Successful replacement will be indicated by the green Power OK indi cator

being illuminated and by the yellow Fail indicator not illuminating.

Installation of a power supply module is shown below:

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FIG 2-10 The installation and removal of DCRS-7608E power supply modules

 Clean power module dust gauze：

Power module dust gauze is provided in the front panel of the MRS-PWR-B1-AC and

MRS- PWR-B1-DC power modules, which can be removed and installed easily. It can
prevent large debris or particles in the air from being ingested into the power supply
module. Please perform cleaning on a regular basis according to the site conditions.

 Pulling the lower dust gauze front panel, draw the dust gauze and front panel

out

 Clean the dust gauze with a brush (never wash with any liquid)
 Insert the gauze back to its original position in the power suppl y m odule

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 Push dust gauze and front panel back to power module
 Press the lower dust gauze front panel and lock it

The installation and removal of the dust gauze is shown below:

FIG 2-11

The installation and removal of Power mo dule dust gauze

2.3.4 Connecting to the Console

The DCRS-7600E provides a RS-232 port as the local console. Users can configure

the switch through a character terminal (usually a PC) wit h RS -232 ports. The connec tion
procedures are listed below:
Step 1: Find a character terminal or a PC with a RS-232 serial port.
Step 2: Connect the RS-232 serial port of character terminal to the configurat ion port of

the switch, ensuring at least one of them is powered down.

Upon connection, please verify the sign above the port to avoid using the wrong port.

2.3.5 Connecting to the Management Port

Each mai n control card provides a RJ-45 (female) Ethernet port. Users can connect

to this administration port through a backend host with Ethernet interface for program
loading, or use this port to connect to remote devices (e.g., an administrat ive work station)
for remote administration. The connection procedure is listed below:
 Connecting to a back-end PC

Step 1: Find a PC with Ethernet Interface.
Step 2: Connect the PC to the RJ-45 Ethernet port of the switch wit h a twisted-pair

crossover cable.

 Remote Administration of the device

Notice

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Step 1: Connect the administrative Ethernet port i n the main controlling board to a

HUB with a standard network cable.
Step 2: Connect the Hub to an administrative workstation in the local area network.
Or:
Step 1: Connect the administrative Ethernet port i n the main controlling board to a

Router with a crossover network cable.
Step 2: Connect the router to an administrative workstation in the wide area

network.

2.3.6 SFP transceiver installation

In the DCRS-7600E, each line card with a 1000BASE fiber interface provides several

SFP 1000BASE transceiver slots.
The procedure for installing the SFP 1000BASE fiber transceiver is shown b el ow:
Step 1: Put on a ESD wrist strap (or antistatic gloves)
Step 2: Insert the SFP transceiver onto the guide rail inside the 1000BASE fiber

interface line card Do not put the SFP transceiver up-side-down.

Step 3: Push the SFP transceiver along the guide rail gently until you feel the transceiver

snap into place at the bottom of the line card.

Note: the SFP 1000BASE fiber transceiver is hot swappable.

Do not stare directly at the 2 fiber bore in the SFP 1000Base fiber transceiver when

the switch is in operation. The laser may hurt your eyes .

2.3.7 Copper Cable/Fiber Cable Connection

Ethernet cable connection:

Step 1: Insert one end of the Ethernet cable into the RJ-45 Ethernet port in the switch
copper cable line card;
Step 2: Insert the other end of the Ethernet cable into the RJ-45 Ethernet port of the

other device;

Step 3: Check all status indicators for the corresponding ports, a lighted LINK indic at es

the link has been established, otherwise the link is not ready and the cable
should be examined;

Notice

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Upon connection, please verify the sign above th e port to avoid use of other ports,

which might damage to the modules or the swi tch.

The connection procedure for fibers is listed below:

Step 1: Remove the protective dust plug from t he SFP/XENPAK fiber transceiver bore;
take out the fiber cable and remove the protective c ap from one end of the fiber cable.
Keep the fiber end clean and neat.
Step 2: Immediately attach the end of the fiber c able to the SFP/XENPAK transceiver,
and the other end to the transceiver of the corresponding devic e. Note: Upon c onnection,
the SFP/XENPAK transceiver’s TX port should be connected to the RX port of the
corresponding device, and vice versa.
Step 3: Check the fiber port status indicator, a lighted LINK indicates that the link has
been established, otherwise the link is not ready and should be examined.

Upon connection, please verify the sign above th e port to avoid using other ports,

which might damage the transceiver or the other ports.
When connecting the other device through fi ber cable to the switch, the output powe r of
the fiber must not exceed the maximum received power of the corresponding modules,
otherwise, it will damage the fiber transceiver. Do not stare at the fiber bore when the
switch is in operation to avoid harm.

2.3.8 Power supply connection

Connection procedures for the AC power supply module are described below:

Step 1: Insert one end of electrical line into the power supply socket and another end

into the corresponding socket of the switc h; when connecting electrical lines, it
shall be confirmed that the power supply modules are power off.

Step 2: It shall be examined whether or not the fan on the power supply module

operates normally. If the fan fails to operate, please examine whether the power
supply socket is power on and whether the power supply module are inserte d
and locked properly.

Step 3: Turn on the power supply modules (if there are two power supply modules , both

of them shall be turned on.), and examine whether or not the indicator of the

Notice

Notice

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indicator of the front panel is normal. If the OUTPUT GOOD indic ator fails to be
on, please turn off the power supply without delay and examine the status of
power supply and each inserting plate.

If the Power OK indicator does not illuminate after repeating the above st eps, please

contact the dealer. Do not open the switch chassis by yourself. Please contact the dealer
in the case of any failure.

Notice