H3C MSR 20-1X User Manual
Hangzhou H3C Technologies Co., Ltd.
http://www.h3c.com
Document version: 20101217-C-1.04
H3C MSR 20-1X Routers
Installation Guide
Copyright © 2006-2010, Hangzhou H3C Technologies Co., Ltd. and its licensors
All rights reserved
No part of this manual may be reproduced or transmitted in any form or by any means without prior
written consent of Hangzhou H3C Technologies Co., Ltd.
Trademarks
H3C,
SecPro, SecPoint, SecEngine, SecPath, Comware, Secware, Storware, NQA, VVG, V
XGbus, N-Bus, TiGem, InnoVision and HUASAN are trademarks of Hangzhou H3C Technologies Co.,
Ltd.
All other trademarks that may be mentioned in this manual are the property of their respective owners
Notice
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute the warranty of any kind, express or implied.
Environmental protection
This product has been designed to comply with the environmental protection requirements. The storage,
use, and disposal of this product must meet the applicable national laws and regulations.
, Aolynk, , H3Care,
, TOP G, , IRF, NetPilot, Neocean, NeoVTL,
2
G, VnG, PSPT,
Preface
The H3C MSR 20-1X Routers Installation Guide describes how to install the H3C MSR 20-1X Routers,
maintain software and hardware of the router, and solve problems you may encounter during the
installation process.
This preface includes:
•
Audience
Conventions
•
About the H3C MSR documentation set
•
Obtaining documentation
•
Technical support
•
Documentation feedback
•
Audience
This documentation is intended for:
• Network planners
• Field technical support and servicing engineers
• Network administrators working with the MSR Series
Conventions
This section describes the conventions used in this documentation set.
Symbols
Convention Description
WARNING
CAUTION
IMPORTANT
NOTE
TIP
An alert that calls attention to important information that if not understood or followed can
result in personal injury.
An alert that calls attention to important information that if not understood or followed can
result in data loss, data corruption, or damage to hardware or software.
An alert that calls attention to essential information.
An alert that contains additional or supplementary information.
An alert that provides helpful information.
Network topology icons
Represents a generic network device, such as a router, switch, or firewall.
Represents a routing-capable device, such as a router or Layer 3 switch.
Represents a generic switch, such as a Layer 2 or Layer 3 switch, or a router that supports
Layer 2 forwarding and other Layer 2 features.
About the H3C MSR documentation set
The H3C MSR documentation set includes:
Category Documents Purposes
MSR 900 Routers Marketing
brochures
MSR 20-1X Routers Marketing
brochures
Product description and
specifications
MSR 20-2X[40] Routers Marketing
brochures
MSR 30 Routers Marketing brochures
MSR 50-40[60] Routers Marketing
brochures
Describe product specifications and
benefits.
Hardware specifications
and installation
Software configuration
Operations and
maintenance
MSR 900 Routers Installation guide
MSR 20-1X Routers Installation guide
MSR 20-2X[40] Routers Installation
guide
MSR 30 Routers Installation guide
MSR 50 Routers Installation guide
MSR Series Routers Interface Module
Manual
MSR Series Routers Configuration
guides
MSR Series Routers Command
references
MSR Series Routers Web
Configuration guides
MSR Basic Series Routers Release
notes
MSR Standard Series Routers Release
notes
Provides a complete guide to hardware
installation and hardware
specifications.
Describe software features and
configuration procedures.
Provide a quick reference to all
available commands.
Describe Web software features and
configuration procedures.
Provide information about the product
release, including the version history,
hardware and software compatibility
matrix, version upgrade information,
technical support information, and
software upgrading.
Obtaining documentation
You can access the most up-to-date H3C product documentation on the World Wide Web at
http://www.h3c.com.
Click the links on the top navigation bar to obtain different categories of product documentation:
[Technical Support & Documents > Technical Documents] – Provides hardware installation, software
upgrading, and software feature configuration and maintenance documentation.
[Products & Solutions] – Provides information about products and technologies, as well as solutions.
[Technical Support & Documents > Software Download] – Provides the documentation released with the
software version.
Technical support
customer_service@h3c.com
http://www.h3c.com
Documentation feedback
You can e-mail your comments about product documentation to info@h3c.com.
We appreciate your comments.
Contents
Overview ······································································································································································ 1
Introduction ········································································································································································1
Physical Description of the MSR 20-1X Routers ·············································································································1
Hardware Specifications ·········································································································································1
MSR 20-10 Router····················································································································································3
MSR 20-11 Router····················································································································································4
MSR 20-12 Router····················································································································································6
MSR 20-13 Router····················································································································································8
MSR 20-15 Router················································································································································· 10
Generic Modules···························································································································································· 11
SICs and DSICs ·····················································································································································12
Installation Preparations ············································································································································13
Requirements on Environment ······································································································································· 13
Requirements on Temperature and Humidity ····································································································· 13
Requirements on Cleanness·································································································································· 13
Requirements on Electrostatic Discharge Prevention·························································································· 14
Requirements on Electromagnetic Environment ··································································································14
Requirements on Lightning Protection·················································································································· 14
Checking the Rack················································································································································· 15
Safety Precautions·························································································································································· 15
Installation Tools, Meters and Equipment ····················································································································15
Installation···································································································································································17
Installation Flowchart ····················································································································································· 17
Installing the Cabinet ····················································································································································· 17
Installing the Router························································································································································ 17
Installing the Router on a Workbench················································································································· 18
Installing the Router on a Cabinet ······················································································································· 18
Installing the Router on a Wall ···························································································································· 19
Installing Generic Modules ··········································································································································· 20
Connecting the PGND Cable ······································································································································· 20
Connecting the Power Cord·········································································································································· 21
Power Socket and PGND ·····································································································································21
Connecting the AC Power Cord ·························································································································· 21
Installing Antennas························································································································································· 22
Connecting the Console Terminal ································································································································ 22
Fixed Interfaces ······························································································································································23
Layer 3 Ethernet Interface····································································································································· 23
Connecting the AUX Interface to a Modem ······································································································· 26
Installing and Removing the Slide Rails ······················································································································· 27
Slide Rails······························································································································································· 27
Installing the Slide Rails ········································································································································ 27
Removing the Slide Rails······································································································································· 28
Installing the Security Lock ············································································································································ 28
Verifying Installation ······················································································································································ 28
Startup and Configuration·········································································································································29
Startup ············································································································································································· 29
Setting Up the Configuration Environment·········································································································· 29
i
Powering on the Router········································································································································· 31
Startup Process······················································································································································· 32
Configuration Fundamentals ········································································································································· 32
Command Line Interface······································································································································· 33
Slot Arrangement and Rules for Numbering Interfaces····················································································· 34
Software Maintenance···············································································································································35
Introduction ····································································································································································· 35
Files Managed by the Router ······························································································································· 35
Software Maintenance Methods·························································································································· 36
Maintaining Application Program and Configuration Through Command Lines···················································· 37
Maintaining the Router Through TFTP Server ····································································································· 38
Maintaining the Router Through FTP Server ······································································································· 40
BootWare Menu····························································································································································· 43
Main BootWare Menu·········································································································································· 43
BootWare Submenus ············································································································································ 45
Upgrading an Application Program Through an Ethernet Interface········································································· 47
Configuring Ethernet Interface Parameters ········································································································· 48
Upgrading Procedure ···········································································································································49
Upgrading BootWare Through Ethernet Interface······································································································ 51
Upgrading BootWare Through Serial Interface·········································································································· 51
XModem Protocol Overview ································································································································ 51
Modifying Serial Interface Parameters················································································································ 52
Upgrading BootWare··········································································································································· 53
Upgrading an Application Program Through a Serial Interface··············································································· 55
Maintaining Application and Configuration Files ······································································································ 55
Dealing with Password Loss·········································································································································· 57
User Password Loss ··············································································································································· 57
BootWare Password Loss ····································································································································· 58
Super Password Loss············································································································································· 58
Backing Up and Restoring BootWare·························································································································· 59
Hardware Maintenance ············································································································································60
Preparing Tools ······························································································································································ 60
Opening the Chassis Cover·········································································································································· 60
Internal Structure····························································································································································· 61
Replacing a VPM Card ·················································································································································61
Structure of VPM Card·········································································································································· 61
VPM Slot································································································································································· 62
Installing/Removing a VPM Card························································································································ 62
Setting the Fixed E1 Interface Impedance ··················································································································· 63
Troubleshooting··························································································································································65
Troubleshooting the Power System······························································································································· 65
Troubleshooting the Configuration System·················································································································· 65
Troubleshooting Application Software Upgrade ········································································································ 66
Index ···········································································································································································68
ii
Overview
Introduction
The MSR 20-1X routers are multifunctional access routers which are oriented to small and medium
business (SMB), enterprise branches, and home offices, and are designed to serve high-quality
orderwire and commercial networks. High-quality orderwire and commercial networks need to satisfy
the requirements for broadband access, wireless access, voice access, VPN, and QoS. In addition, the
network devices require high performance, stability, security, and manageability. MSR 20-1X routers are
cost effective. They provide different integrated communication interfaces for different communication
links and also provide an SIC/DSIC slot for expansion.
The MSR 20-1X routers include MSR 20-10, MSR 20-11, MSR 20-12, MSR 20-13, and MSR 20-15. All of
them can be placed on a tabletop, or installed on a wall or in 19-inch standard cabinet. The following
sections will give you more details about these four models.
Physical Description of the MSR 20-1X Routers
Hardware Specifications
Table 1 Hardware specifications of the MSR 20-1X routers
Item MSR 20-10 MSR 20-11 MSR 20-12 MSR 20-13 MSR 20-15
Console/AUX 1 1 1 1 1
USB 1 1 1 1 1
Layer 3 Ethernet
interface
Layer 2 Ethernet
Fixed
Interfaces
External SIC/DSIC slot 1 1 1 1 1
Internal
interface
ADSL 0 0 0 0 1
G.SHDSL.BIS 0 0 0 1 0
SA 0 1 0 0 0
ISDN BRI S/T 0 0 0 1 1 (Optional)
E1/T1 0 0 1 0 0
AM 0 0 0 0 1 (Optional)
WLAN fixed
module
VPM slot 0 0 1 0 1
1 1
4 4 4 4 4
0 0 1 (Optional) 1 (Optional) 1 (Optional)
1
1
1
Processor
PowerPC
333 MHz
PowerPC
333 MHz
1
PowerPC
333 MHz
PowerPC
333 MHz
PowerPC
333 MHz
Item MSR 20-10 MSR 20-11 MSR 20-12 MSR 20-13 MSR 20-15
1 M in the
Boot ROM
Memory
Flash 32 MB 32 MB 32 MB 32 MB 32 MB
Physical dimensions (H × W ×
D) (excluding feet and
mounting brackets)
Weight 3 kg (6.6 lb.) 3 kg (6.6 lb.) 3 kg (6.6 lb.) 3 kg (6.6 lb.) 3 kg (6.6 lb.)
AC input
Maximum power consumption 25 W 25 W 25 W 25 W 25 W
Operating temperature
flash
memory
DDR 256
MB
44.2 × 300
× 240 mm
(1.74 ×
11.81 ×
9.45 in.)
Rated
voltage
range: 100
VAC to 240
VAC, 50 Hz
or 60 Hz
0°C to 40°C
(32°F to
104°F)
1 M in the
flash
memory
DDR 256
MB
44.2 × 300
× 240 mm
(1.74 ×
11.81 ×
9.45 in.)
Rated
voltage
range: 100
VAC to 240
VAC, 50 Hz
or 60 Hz
0°C to 40°C
(32°F to
104°F)
1 M in the
flash
memory
DDR 256
MB
44.2 × 300
× 240 mm
(1.74 ×
11.81 ×
9.45 in.)
Rated
voltage
range: 100
VAC to 240
VAC, 50 Hz
or 60 Hz
0°C to 40°C
(32°F to
104°F)
1 M in the
flash
memory
DDR 256
MB
44.2 × 300
× 240 mm
(1.74 ×
11.81 ×
9.45 in.)
Rated
voltage
range: 100
VAC to 240
VAC, 50 Hz
or 60 Hz
0°C to 40°C
(32°F to
104°F)
1 M in the
flash
memory
DDR 256
MB
44.2 × 300
× 240 mm
(1.74 ×
11.81 ×
9.45 in.)
Rated
voltage
range: 100
VAC to 240
VAC, 50 Hz
or 60 Hz
0°C to 40°C
(32°F to
104°F)
Relative humidity
(non-condensing)
5% to 90% 5% to 90% 5% to 90% 5% to 90% 5% to 90%
NOTE:
• The console port and AUX port of MSR 20-1X routers share one RJ-45 interface.
• Two SIC slots can form one DSIC slot.
• MSR 20-12 and MSR 20-15 can implement voice data processing without any VCPM card. If you need
voice support, insert a VPM card into the VPM slot on the main control board, and then install a
SIC-1VE1 or SIC-1VT1 on the router.
• Only MSR 20-12 and 20-15 can support SIC-1VE1 and SIC-1VT1.
• MSR 20-12, MSR 20-13, and MSR 20-15 all include two sub-models. One sub-model supports WLAN
and the other does not. You can purchase the appropriate sub-model as required.
• The Boot ROM stores the Bootstrap for booting the router.
• The memory stores the communication data between the system and the CPU during the system
operation.
• The flash memory stores the BootWare, the software system and the configuration file of the router.
• Do not unplug the USB device during USB data transmission; otherwise, data loss or even hardware
failures may occur.
• The wireless module can not be purchased separately.
• By default, the impedance of the fixed E1 interface on MSR 20-12 is 75-ohm. Using the internal DIP
switches, users can change the interface impedance from 75-ohm to 120-ohm. For detail information,
refer to Chapter 6 “Hardware Maintenance”.
2
MSR 20-10 Router
Appearance
1. Front panel
Figure 1 Front panel of the MSR 20-10 router
(1) Power switch (2) Power socket
(3) LEDs (4) USB interface
(5) RESET button
2. Rear panel
Figure 2 Rear panel of the MSR 20-10 router
Panel LEDs
Table 2 and Table 3 respectively describe the LEDs on the front and rear panels of the MSR 20-10 router.
Table 2 Front panel LEDs of the MSR 20-10 router
(1) Grounding terminal (2) Console/Auxiliary interface (CON/AUX)
(3) Layer 3 Ethernet interface 0 (ETH0) (4) Layer 2 Ethernet interface 1
(5) Layer 2 Ethernet interface 2 (6) Layer 2 Ethernet interface 3
(7) Layer 2 Ethernet interface 4 (8) SIC/DSIC slot
LED Description
PWR
• ON: The router is powered on.
• OFF: The router is powered off.
• Green and fast blinking: The system is booting.
SYS
• Green and slow blinking: The system is operating normally.
• Yellow and fast blinking: The system is faulty.
• OFF: The system operation is abnormal.
3
LED Description
• OFF: No link is present.
ETH
• ON: A link is present.
• Blinking: Data is being transmitted or received.
Table 3 Rear panel LEDs of the MSR 20-10 router
LED Description
LINK
ACT
• OFF: No link is present.
• ON: A link is present.
• OFF: No data is being transmitted or received.
• Blinking: Data is being transmitted or received.
MSR 20-11 Router
Appearance
1. Front panel
Figure 3 Front panel of the MSR 20-11 router
(1) Power LED (PWR) (2) System LED (SYS)
(3) Ethernet interface LED (ETH) (4) Power switch
(5) Power socket (6) USB interface
(7) RESET button
4
2.
Figure 4 Rear panel of the MSR 20-11 router
Panel LEDs
Rear panel
(1)Grounding terminal (2) Console/Auxiliary port (CON/AUX)
(3) Layer 3 Ethernet interface 0 (ETH0) (4) Layer 2 Ethernet interface 1
(5) Layer 2 Ethernet interface 2 (6) Layer 2 Ethernet interface 3
(7) Layer 2 Ethernet interface 4 (8) Serial interface LEDs
(9) Serial interface (10) SIC/DSIC slot
Table 4 and Table 5 respectively describe the LEDs on the front and rear panels of an MSR 20-11 router.
Table 4 Front panel LEDs of the MSR 20-11 router
LED Description
PWR
• ON: The router is powered on.
• OFF: The router is powered off.
• Green and fast blinking: The system is booting.
SYS
• Green and slow blinking: The system is operating normally.
• Yellow and fast blinking: The system is faulty.
• OFF: The system operation is abnormal.
• OFF: No link is present.
ETH
• ON: A link is present.
• Blinking: Data is being transmitted or received.
Table 5 Rear panel LEDs of the MSR 20-11 router
LED Description
LINK
ACT
• OFF: No link is present.
• ON: A link is present.
• OFF: No data is being transmitted or received.
• Blinking: Data is being transmitted or received.
5
MSR 20-12 Router
Appearance
1. Front panel
Figure 5 Front panel of the MSR 20-12 router
(1) Power switch (2) Power socket
(3) LEDs (4) USB interface
(5) RESET button
2. Rear panel
Figure 6 Rear panel of the MSR 20-12 router
(1) Grounding terminal (2) Console/Auxiliary interface (CON/AUX)
(3) Layer 3 Ethernet interface 0 (ETH0) (4) Layer 2 Ethernet interface 1
(5) Layer 2 Ethernet interface 2 (6) Layer 2 Ethernet interface 3
(7) Layer 2 Ethernet interface 4 (8) E1 LED
(9) E1 interface (10) SIC/DSIC slot
6
Panel LEDs
Table 6 and Table 7 respectively describe the LEDs on the front and rear panels of the MSR 20-12 router.
Table 6 Front panel LEDs of the MSR 20-12 router
LED Description
PWR
• ON: The router is powered on.
• OFF: The router is powered off.
• Green and fast blinking: The system is booting.
SYS
• Green and slow blinking: The system is operating normally.
• Yellow and fast blinking: The system is faulty.
• OFF: The system operation is abnormal.
• OFF: No link is present.
ETH
• ON: A link is present.
• Blinking: Data is being transmitted or received.
When Boot ROM is booting:
• Blinking: The basic Boot ROM is booting.
• ON: The extended Boot ROM is booting.
WLAN
When the router is running:
• Slow blinking: The system is operating normally.
• Fast blinking: There is heavy traffic.
• OFF: The system operation is normal.
Table 7 Rear panel LEDs of the MSR 20-12 router
LED Description
LINK
ACT
• OFF: No link is present.
• ON: A link is present.
• OFF: No data is being transmitted or received.
• Blinking: Data is being transmitted or received.
7
MSR 20-13 Router
Appearance
1. Front panel
Figure 7 Front panel of the MSR 20-13 router
(1) Power LED (PWR) (2) ACT LED of BRI interface (3) B1 LED
(4) System LED (SYS) (5) Ethernet LED (ETH) (6) Wireless LED (WLAN)
(7) B2 LED (8) USB interface (9) RESET button
(10) Power switch (11) Power socket
2. Rear panel
Figure 8 Rear panel of the MSR 20-13 router
(1) Grounding terminal (2) Console port/Auxiliary port (CON/AUX)
(3) BRI S/T interface (4) Layer 3 Ethernet interface 0 (ETH0)
(5) Layer 2 Ethernet interface 1 (6) Layer 2 Ethernet interface 2
(7) Layer 2 Ethernet interface 3 (8) Layer 2 Ethernet interface 4
(9) G.SHDSL.BIS LED (10) G.SHDSL.BIS interface
(11) SIC/DSIC slot
8
Panel LEDs
Table 8 and Table 9 respectively describe the LEDs on the front and rear panels of the MSR 20-13 router.
Table 8 Front panel LEDs of the MSR 20-13 router
LED Description
PWR
SYS
ETH
WLAN
ACT
ON: The router is powered on.
OFF: The router is powered off.
Green and fast blinking: The system is booting.
Green and slow blinking: The system is operating normally.
Yellow and fast blinking: The system is faulty.
OFF: The system operation is abnormal.
OFF: No link is present.
ON: A link is present.
Blinking: Data is being transmitted or received.
When Boot ROM is booting:
Blinking: The basic Boot ROM is booting.
ON: The extended Boot ROM is booting.
When the router is running:
Slow blinking: The system is operating normally.
Fast blinking: There is heavy traffic.
OFF: The system operation is abnormal.
ON: The BRI interface is in the active state.
OFF: The BRI interface is in the inactive state.
B1
B2
ON: Data is being transmitted or received on B1 channel.
OFF: Data is being transmitted or received on B1 channel.
ON: Data is being transmitted or received on B2 channel.
OFF: No data is being transmitted or received on B2 channel.
Table 9 Rear panel LEDs of the MSR 20-13 router
LED Description
LINK
ACT
OFF: No link is present.
ON: A link is present.
OFF: No data is being transmitted or received.
Blinking: Data is being transmitted or received.
9
MSR 20-15 Router
Appearance
1. Front panel
Figure 9 Front panel of the MSR 20-15 router
(1) (2)
(1) Power switch (2) Power socket (3) LEDs
(4) USB interface (5) RESET button
2. Rear panel
(3)
(4)
(5)
Figure 10 Rear panel of the MSR 20-15 router
(1) Grounding terminal (2) Console/Auxiliary interface (CON/AUX)
(3) BRI S/T interface (4) Layer 3 Ethernet interface 0 (ETH0)
(5) Layer 2 Ethernet interface 1 (6) Layer 2 Ethernet interface 2
(7) Layer 2 Ethernet interface 3 (8) Layer 2 Ethernet interface 4
(9) ADSL LED (10) ADSL interface
(11) SIC/DSIC slot
10
Panel LEDs
Table 10 and Table 11 respectively describe the LEDs on the front and rear panels of the MSR 20-15
router.
Table 10 Front panel LEDs of the MSR 20-15 router
LED Description
PWR
• ON: The router is powered on.
• OFF: The router is powered off.
• Green and fast blinking: The system is booting.
SYS
• Green and slow blinking: The system is operating normally.
• Yellow and fast blinking means the system is malfunctioning.
• OFF: The system operation is abnormal.
• OFF: No link is present.
ETH
• ON: A link is present.
• Blinking: Data is being transmitted or received.
When Boot ROM is booting:
• Blinking: The basic Boot ROM is booting.
• ON: The extended Boot ROM is booting.
WLAN
When the router is operating:
• Slow blinking: The system is operating normally.
• Fast blinking: There is heavy traffic.
• OFF: The system operation is abnormal.
ACT
B1
B2
• ON: The BRI interface is in the active state.
• OFF: The BRI interface is in the inactive state.
• ON: Data is being transmitted or received on B1 channel.
• OFF: No data is being transmitted or received on B1 channel.
• ON: Data is being transmitted or received on B2 channel.
• OFF: No data is being transmitted or received on B2 channel.
Table 11 Rear panel LEDs of the MSR 20-15 router
LED Description
LINK
ACT
• OFF: No link is present.
• ON: A link is present.
• OFF: No data is being transmitted or received.
• Blinking: Data is being transmitted or received.
Generic Modules
The generic modules provided for the MSR 20-1X routers include SICs. For detailed information about
interface cards, refer to MSR Series Routers Interface Module Manual.
For the types of interface modules that each model of the MSR 20-1X routers can accommodate, refer to
Appendix A Interface Card and Interface Module Purchase Guide in the MSR Series Routers Interface
Module Manual.
11
SICs and DSICs
MSR 20-1X routers adopt modular design and provide the following interfaces to support a wide range
of optional SICs/DSICs:
• Synchronous/asynchronous serial interface
• Ethernet port
• E1/T1 interface
• ISDN BRI/PRI
• ADSL interface
• Voice interface
• Layer 2 Ethernet interface
12
Installation Preparations
Requirements on Environment
MSR 20-1X routers are designed for indoor application. To ensure the normal operation and prolong
their service life, the installation site must meet the requirements mentioned in the following sections.
Requirements on Temperature and Humidity
To ensure the normal operation and prolong their service life, the temperature and humidity in the
equipment room shall maintain at a certain level. A long-term high relative humidity will quite likely result
in poor insulation performance, electric leakage, mechanical property change, and corrosion, while a
low relative humidity will result in looseness of fastening screws owing to shrinkage of insulation washers,
or electrostatic discharge (ESD), which may damage the CMOS circuit on the router. A high temperature
will speed up the aging of insulation materials, and thus will greatly lower the reliability of the router and
shorten the service life.
Table 12 lists the requirements on the temperature and humidity for MSR 20-1X routers.
Table 12 Temperature and humidity requirements in the equipment room
Temperature Relative Humidity
0°C to 40°C (32°F to 104°F) 5% to 90% (noncondensing)
Requirements on Cleanness
Dust is harmful to the safe operation of the router. Dust on the chassis may result in static absorption,
causing poor contact between metal connectors or joints, which may not only shorten the service life of
the router, but also bring about communication failures. Especially under the condition of a low indoor
humidity, dust is easier to be absorbed.
Table 13 lists the requirements on the dust concentration and diameters in the equipment room.
Table 13 Limitation on dust concentration and diameters in the equipment room
Diameter (μm) 0.5 1 3 5
Concentration
(particle/m³)
1.4 × 10
Besides, the contents of salt, acid, and sulfide in equipment room shall be strictly restricted. Harmful
gases will accelerate the corrosion of metal parts and the aging of some parts.
concentration limit of SO
Table 14 Concentration limit of some harmful gases in equipment room
7
, H2S, NH3 and CI2 in the equipment room.
2
7 × 10
5
2.4 × 10
5
1.3 × 10
5
Table 14 lists the
Gas Concentration limit (mg/m
SO2 0.2
H2S 0.006
13
3
)
Gas Concentration limit (mg/m3)
NH3 0.05
Cl2 0.01
Requirements on Electrostatic Discharge Prevention
Although many antistatic considerations have been given to MSR 20-1X routers, damage to circuits or
even the routers may still happen when the amount of static charges exceeds a certain limit.
In the communication network to which the routers are connected, static induction mainly comes from two
aspects: the external electric field (such as outdoor high voltage power line or thunder) and the internal
system (such as indoor environment, floor materials or the router equipment structure. Thus, the following
should be considered to safeguard the equipment against ESD.
• Make sure that the router and the floor are well grounded.
• The equipment room is dust-proof.
• Maintain an appropriate humidity and temperature.
• Wear an ESD-preventive wrist strap and uniform when contacting a circuit board.
• Place the removed circuit board on an antistatic workbench, with its face upwards, or put it into an
antistatic bag.
• When observing or moving the removed circuit board, it is only allowed to touch the edge of circuit
boards, instead of elements on the circuit board.
Requirements on Electromagnetic Environment
The interference sources, no matter where they come from, affect the routers in the form of capacitance
coupling, inductance coupling, radiation of electromagnetic wave, and common impedance (including
the grounding system) coupling. Therefore, the following should be considered:
• Take effective measures to prevent the power system from being interfered by the power grid system.
• Separate the return terminal of the router from the grounding device or lightning protection
grounding device of the power supply equipment and keep them as far as possible.
• Keep the router far away from radio stations, radar, and high-frequency devices working in high
current.
• Use electromagnetic shielding when necessary.
Requirements on Lightning Protection
Although many measures have been taken to protect MSR 20-1X routers from lightning, if the lightning
intensity exceeds a certain range, damage to the router may still happen. To protect the router from
lightning better, the following should be considered:
• Ensure the PGND wire of the chassis is well grounded.
• Ensure the grounding point of the AC power socket is well grounded.
• Install a lightning arrester at the input end of the power supply to enhance the lightning protection
capability of the power supply.
• Install a special lightning arrester at the input end of outdoor signal lines (for example, ISDN line,
telephone line, and E1/T1 line) to enhance the lightning protection capability.
14
Checking the Rack
When installing MSR 20-1X routers, make sure that:
• There is spacing reserved at the air inlet and exhaust in the router for the purpose of heat dissipation
of the router chassis.
• The rack has a good ventilation system for heat dissipation.
• The rack is solid enough to support the weight of the device and the installation accessories.
• The rack is well-grounded.
Safety Precautions
Routers play an important role in data communications network. Please pay attention to the following
signs:
WARNING: Means the reader be extremely careful. Improper operation may cause bodily injury.
CAUTION: Means the reader be careful. Improper operation may cause data loss or damage to
equipment.
When installing or working on the router, observe the following recommendations:
• Keep the router far away from heat sources and dampness.
• Ground the router correctly.
• Wear an ESD-preventive wrist strap, making sure that the strap has good skin contact.
• Do not insert or remove interface modules or interface cards of the router when the power supply is
connected.
• Do not insert or remove a cable when the power supply is connected.
• Connect the interface cables correctly for the router. Do not connect a telephone line (including
ISDN line) to a serial port.
• Use laser with caution. Do not directly stare into apertures or fiber-optic connectors that emit laser
radiation.
• Equip an uninterrupted power supply (UPS).
Installation Tools, Meters and Equipment
Tools
• Phillips screwdriver
• Straight screwdriver
• ESD-preventive twist strap
Cables
• PGND cable and power cord
• Console cable
• Optional cables
15
Meters and equipment
• Hub or LAN switch
• Console terminal (for example, a PC)
• Equipment related to the selected modules
• Multimeter
CAUTION:
None of the above-mentioned installation tools, meters, and equipment is shipped with MSR 20-1X
routers
16
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