Huawei ME60 Series Instructions for use

HUAWEI ME60 Multiservice Control Gateway
Emergency Maintenance
Issue
01
Date
2017-11-10
HUAWEI TECHNOLOGIES CO., LTD.

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Copyright © Huawei Technologies Co., Ltd. 2017. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior
written consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective
holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei and
the customer. All or part of the products, services and features described in this document may not be
within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,
information, and recommendations in this document are provided "AS IS" without warranties, guarantees or
representations of any kind, either express or implied.
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 a warranty of any kind, express or implied.
Huawei Technologies Co., Ltd.
Address:
Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website:
http://www.huawei.com
Email:
[e-mail]

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About This Document
Purpose
This document describes emergency maintenance for the HUAWEI ME60 in terms of
emergency maintenance for device faults, emergency maintenance for service faults, fault
information collection, and instructions on restarting devices.
This document describes the procedure and method for emergency maintenance for the
HUAWEI ME60.
Intended Audience
This document is intended for:
Data configuration engineers
Commissioning engineers
Network monitoring engineers
System maintenance engineers
Security Declaration
Encryption algorithm declaration
The encryption algorithms DES/3DES/SKIPJACK/RC2/RSA (RSA-1024 or
lower)/MD2/MD4/MD5 (in digital signature scenarios and password encryption)/SHA1
(in digital signature scenarios) have a low security, which may bring security risks. If
protocols allowed, using more secure encryption algorithms, such as AES/RSA
(RSA-2048 or higher)/SHA2/HMAC-SHA2 is recommended.
Password configuration declaration
−Do not set both the start and end characters of a password to "%$%$". This causes
the password to be displayed directly in the configuration file.
−To further improve device security, periodically change the password.
Personal data declaration
Your purchased products, services, or features may use users' some personal data during
service operation or fault locating. You must define user privacy policies in compliance
with local laws and take proper measures to fully protect personal data.
Feature declaration

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−The NetStream feature may be used to analyze the communication information of
terminal customers for network traffic statistics and management purposes. Before
enabling the NetStream feature, ensure that it is performed within the boundaries
permitted by applicable laws and regulations. Effective measures must be taken to
ensure that information is securely protected.
−The mirroring feature may be used to analyze the communication information of
terminal customers for a maintenance purpose. Before enabling the mirroring
function, ensure that it is performed within the boundaries permitted by applicable
laws and regulations. Effective measures must be taken to ensure that information is
securely protected.
−The packet header obtaining feature may be used to collect or store some
communication information about specific customers for transmission fault and
error detection purposes. Huawei cannot offer services to collect or store this
information unilaterally. Before enabling the function, ensure that it is performed
within the boundaries permitted by applicable laws and regulations. Effective
measures must be taken to ensure that information is securely protected.
Reliability design declaration
Network planning and site design must comply with reliability design principles and
provide device- and solution-level protection. Device-level protection includes planning
principles of dual-network and inter-board dual-link to avoid single point or single link
of failure. Solution-level protection refers to a fast convergence mechanism, such as FRR
and VRRP.
Special Declaration
This document serves only as a guide. The content is written based on device
information gathered under lab conditions. The content provided by this document is
intended to be taken as general guidance, and does not cover all scenarios. The content
provided by this document may be different from the information on user device
interfaces due to factors such as version upgrades and differences in device models,
board restrictions, and configuration files. The actual user device information takes
precedence over the content provided by this document. The preceding differences are
beyond the scope of this document.
The maximum values provided in this document are obtained in specific lab
environments (for example, only a certain type of board or protocol is configured on a
tested device). The actually obtained maximum values may be different from the
maximum values provided in this document due to factors such as differences in
hardware configurations and carried services.
Interface numbers used in this document are examples. Use the existing interface
numbers on devices for configuration.
The pictures of hardware in this document are for reference only.
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol
Description

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Symbol
Description
Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in equipment damage, data loss,
performance deterioration, or unanticipated results.
NOTICE is used to address practices not related to personal
injury.
Calls attention to important information, best practices and
tips.
NOTE is used to address information not related to
personal injury, equipment damage, and environment
deterioration.
Command Conventions
The command conventions that may be found in this document are defined as follows.
Convention
Description
Boldface
The keywords of a command line are in boldface.
Italic
Command arguments are in italics.
[ ]
Items (keywords or arguments) in brackets [ ] are optional.
{ x | y | ... }
Optional items are grouped in braces and separated by
vertical bars. One item is selected.
[ x | y | ... ]
Optional items are grouped in brackets and separated by
vertical bars. One item is selected or no item is selected.
{ x | y | ... }*
Optional items are grouped in braces and separated by
vertical bars. A minimum of one item or a maximum of all
items can be selected.
[ x | y | ... ]*
Optional items are grouped in brackets and separated by
vertical bars. Several items or no item can be selected.
&<1-n>
The parameter before the & sign can be repeated 1 to n
times.

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Convention
Description
#
A line starting with the # sign is comments.
Change History
Changes between document issues are cumulative. The latest document issue contains all the
changes made in earlier issues.
Changes in Issue 01 (2017-11-10)
This issue is the first official release.

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Contents
About This Document.................................................................................................................... ii
1 Overview of Emergency Maintenance......................................................................................1
1.1 Definition of Emergency Maintenance.........................................................................................................................1
1.2 Definition of Emergencies............................................................................................................................................2
1.3 Source of Emergency Maintenance ..............................................................................................................................2
1.4 Principle of Emergency Maintenance...........................................................................................................................2
1.5 Precautions for Emergency Maintenance .....................................................................................................................3
1.6 Technical Support .........................................................................................................................................................4
2 Flow of Emergency Maintenance...............................................................................................5
2.1 Emergency Maintenance Flow Chart............................................................................................................................5
2.2 Flow of Emergency Maintenance .................................................................................................................................6
2.2.1 Notifying Huawei of the Emergency .........................................................................................................................6
2.2.2 Collecting Fault Information .....................................................................................................................................6
2.2.3 Handling the Emergency............................................................................................................................................7
2.2.4 Seeking Help..............................................................................................................................................................9
2.2.5 Checking the Handling Result ...................................................................................................................................9
2.2.6 Recording Emergency Maintenance Information ......................................................................................................9
3 Emergency Maintenance Guidelines ......................................................................................10
3.1 Guide to Collecting Fault Information........................................................................................................................10
3.1.1 Collecting Basic Fault Information..........................................................................................................................10
3.1.2 Collecting Device Fault Information ....................................................................................................................... 11
3.2 Guide to Handling Emergencies .................................................................................................................................12
3.2.1 Failed to Log in to the System Through the Serial Interface ...................................................................................12
3.2.2 Failed to Start the System ........................................................................................................................................15
3.2.3 Status of Hardware Components Is Abnormal.........................................................................................................18
3.2.4 Interface Status Is Abnormal....................................................................................................................................21
3.3 Guide to Restarting a Device......................................................................................................................................25
3.3.1 Preparations for the Restart......................................................................................................................................26
3.3.2 Guide to Restarting the ME60 .................................................................................................................................26
3.3.3 Verification After the Restart ...................................................................................................................................28
3.3.4 Solution to the Restart Failure .................................................................................................................................31
3.4 Guide for Creating a User Account and Elevating a User Account Right ..................................................................31

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3.4.1 Using FTP/TFTP to Replace the Current Device Configuration File ......................................................................32
3.4.2 Using the CONSOLE Interface to Load a New Device Configuration File During a Device Restart.....................33
4 Emergency Maintenance Record Table ..................................................................................38
4.1 Emergency Maintenance Notice.................................................................................................................................38
4.2 Emergency Handling Record......................................................................................................................................39

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1 Overview of Emergency Maintenance
About This Chapter
This chapter describes the definition of emergencies, and the definition, sources, handling
guidelines, and precautions of emergencies maintenance.
1.1 Definition of Emergency Maintenance
This section describes the definition and functions of emergency maintenance.
1.2 Definition of Emergencies
This section describes the definition and classification of emergencies.
1.3 Source of Emergency Maintenance
This section describes in what situations emergency maintenance is to be applied.
1.4 Principle of Emergency Maintenance
This section describes the principles of emergency maintenance.
1.5 Precautions for Emergency Maintenance
This section describes the precautions for emergency maintenance.
1.6 Technical Support
This section describes how to seek Huawei technical support.
1.1 Definition of Emergency Maintenance
This section describes the definition and functions of emergency maintenance.
Emergency maintenance is a rectification method to handle emergencies, such as power-down
or service interruption. With emergency maintenance, you can rapidly rectify the fault and
restore the normal operation of the system and device, and thus minimize the loss.
Emergency maintenance also guides maintenance personnel to take preventive measures to
protect the system from a great amount of service traffic.
This document describes how to apply emergency maintenance to the ME60.

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1.2 Definition of Emergencies
This section describes the definition and classification of emergencies.
An emergency is an unexpected fault on a device or a network, which happens suddenly, has
extensive involvement, and has serious consequences on the network security and quality of
service (QoS).
Emergencies that may occur on the ME60 can be classified into:
Abnormal system - all services being interrupted
Abnormal main processing unit (MPU)/switch and route processing unit (SRU) or switch
fabric unit (SFU) - all services being interrupted
Abnormal service board - partial services being interrupted
Abnormal link - services on the interface being interrupted
An emergency is an extreme situation, which may be foretold by abnormality alarms and logs.
You can confirm whether an emergency occurs by checking either alarms and logs or a
customer's complaint.
This section describes the roadmap for handling emergencies. The roadmap for locating common faults,
refer to the HUAWEI ME60 Multiservice Control Gateway - troubleshooting.
1.3 Source of Emergency Maintenance
This section describes in what situations emergency maintenance is to be applied.
An emergency may be caused by a software or hardware failure, an incorrect setting,
improper maintenance operation, maintenance misoperations, a line failure, or a natural
disaster. Emergency maintenance is expected in either of the following situations:
Customer' complaint
A customer's complaint is the main reason for the application of emergency maintenance.
When a fault reported by a customer or the Customer Service Center conforms to the
conditions in section "1.2 Definition of Emergencies", emergency maintenance needs to
be applied.
Alarm messages
When the alarm messages output by the Network Management System (NMS) or
displayed on the terminal initiate a large scale of service interruption, emergency
maintenance needs to be applied.
Natural disaster
When a natural disaster such as the earthquake, fire, or flood happens, it is required to
temporarily power off devices and apply emergency maintenance.
1.4 Principle of Emergency Maintenance
This section describes the principles of emergency maintenance.
Emergencies easily cause network access failures of numerous users, device breakdown, and
service interruption, resulting in serious consequences. To improve the efficiency in handling

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emergencies and minimize the losses, you must comply with the following guidelines when
maintaining devices:
To keep the stable running of a device and minimize the occurrence probability of
emergencies, refer to the HUAWEI ME60 Multiservice Control Gateway Routine
Maintenance.
The core function of emergency maintenance is to recover system operation and service
provision as soon as possible. To efficiently handle emergencies, you need to set up
schemes to handle various emergencies according to the emergency maintenance manual.
Managers and maintenance personnel must be well-trained and familiar with these
schemes.
The maintenance personnel must attend the emergency maintenance training to learn
methods of identifying and handling emergencies.
When an emergency occurs, keep calm and check whether the hardware and route of the
ME60 are normal. Then, check whether the emergency is caused by the ME60. If so,
handle the emergency according to the predetermined emergency handling schemes or
the processing procedures in this manual.
The CF card contains important data. When an emergency occurs, do not format the CF
card before consulting Huawei engineers.
Contact the Customer Service Center or the local office of Huawei early for technical
support during troubleshooting.
Once the emergency is solved, collect related alarm information and send the handling
report, device alarm files, and log files to Huawei for analysis. This can help Huawei to
improve the after-sales service.
1.5 Precautions for Emergency Maintenance
This section describes the precautions for emergency maintenance.
To ensure the security of the device and safety of the operators, comply with the following
guidelines.
Static Electricity
Wear an ESD wrist strap before operating a board or the backplane, and comply with the
following rules:
For precautions and procedures of board replacement, see "Replacing Boards" in
HUAWEI ME60 Multiservice Control Gateway Parts Replacement.
Place a board in an ESD bag before installing it.
Place a removed board in an ESD bag.
Laser/LED
When you maintain a device with an optical module or optical interface, comply with the
following rules:
When installing and maintaining the optical fiber, do not look into the optical fiber
without eye protection.
When replacing the pluggable optical module, do not look into the connector of the
optical fiber without eye protection.

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Only personnel who attend the mandatory training can operate the optical module and
optical fiber on the ME60.
When you install and maintain the optical fiber, keep the connector of the optical fiber clean, unfolded,
and straight.
1.6 Technical Support
This section describes how to seek Huawei technical support.
During the equipment operation and maintenance, if a fault occurs and is difficult to locate or
rectify, or if you cannot rectify the fault by referring to the after-sales customer documentation,
contact Huawei for assistance (Huawei engineers will provide guidance remotely or on site on
troubleshooting).
Call local Huawei branches or representative offices or contact Huawei Customer Service
Center.
Call local Huawei branches or representative offices or contact Huawei Customer
Service Center.
Contact Huawei Customer Service Center: [e-mail].
Maintenance personnel need maintain a detailed record of the emergency maintenance
procedures, notify Huawei of the type of the board to be replaced, and apply for a backup
board according to the warranty articles. This can help Huawei technical support personnel to
rectify the fault sooner. You can fax an Emergency Maintenance Notice to Huawei. For
detailed information about the format, refer toAppendixA "4 Emergency Maintenance
Record Table."

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2 Flow of Emergency Maintenance
About This Chapter
This chapter describes the flow of emergency maintenance.
2.1 Emergency Maintenance Flow Chart
This section describes the flow chart of emergency maintenance.
2.2 Flow of Emergency Maintenance
This section describes the flow of emergency maintenance.
2.1 Emergency Maintenance Flow Chart
This section describes the flow chart of emergency maintenance.
During troubleshooting, maintain detailed records of operation procedures and results, which can
provide reference for Huawei technical support personnel and thus handle the emergency sooner.
When a fault persists, contact Huawei Customer Service Center. For contact information, see section
"1.6 Technical Support."
The main purpose of emergency maintenance is to recover a system operation and service
provision as soon as possible. Figure 2-1 shows the flow chart of emergency maintenance.

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Figure 2-1 Emergency maintenance flow chart
2.2 Flow of Emergency Maintenance
This section describes the flow of emergency maintenance.
2.2.1 Notifying Huawei of the Emergency
When an emergency occurs, immediately contact Huawei for technical support.
Even if you can independently complete emergency maintenance with the guidance of this manual,
notify Huawei of the emergency. Then, Huawei technical personnel maintain records of the fault to
improve after-sales services.
2.2.2 Collecting Fault Information
When an emergency occurs, collect and back up fault information in real time for reference.
Then, provide the collected information to Huawei engineers for fault location and
rectification.
For details about fault information collection, see the chapter "3.1 Guide to Collecting Fault
Information".

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Recording Basic Fault Information
Collect the following basic information:
Time when the fault occurs
Detailed description of the fault
Software version of the ME60
Measures have been taken and the results
Severity level of the problem and expected time of system recovery
Backing Up Fault Information
Back up the following information:
Indicator status of the boards, power modules, and fans
Alarm information
Log information
Configuration information
Debugging information (if debugging is enabled)
2.2.3 Handling the Emergency
During emergency maintenance, follow the flow chart as shown in Figure 2-2 to verify the
type and range of the fault according to the method as shown in Table 2-1.

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Figure 2-2 Flow chart of verifying the fault type
Start
Can log in
through the console
Interface?
System starts
normally?
Board status is
normal?
Interface status
is normal?
A service fault occurs A device fault occurs
No
No
No
No
Yes
Yes
Yes
Yes
Table 2-1 Methods of verifying the fault type
Item
Method
Login through
the console
interface
Connect the serial interface of a PC or terminal to the console interface
of the ME60 through the standard RS-232 configuration cable and set
relevant parameters on the terminal. For details, refer to the HUAWEI
ME60 Multiservice Control Gateway Configuration Guide - Basic
Configurations.
Check that a terminal display is provided.
System startup
Check whether the system can be started normally and the command
prompt such as <HUAWEI> is displayed.
Board status
Run the display device command on the terminal to check whether the
status of all boards is Normal. In the case of a local fault, check the
status of the service board connected to the customer who reports the
fault.
Interface status
Run the display interface command on the terminal to check whether
the status of the interface connected to the customer who reports the
fault is Up and whether the number of packets received on the interface

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Item
Method
increases.
After the fault type is verified, apply emergency maintenance according to the description in
the Chapter "3.2 Guide to Handling Emergencies".
3.2.1 Failed to Log in to the System Through the Serial Interface
3.2.2 Failed to Start the System
3.2.3 Status of Hardware Components IsAbnormal
3.2.4 Interface Status Is Abnormal
2.2.4 Seeking Help
Seek Huawei technical support according to the contact information given in section "1.6
Technical Support."
2.2.5 Checking the Handling Result
After services resume, check the device status, board indicators, and alarms to confirm that
the system runs normally. Make a dialing test to prove that services are normal. For detailed
operations, refer to the HUAWEI ME60 Multiservice Control Gateway - Routine
Maintenance.
You are recommended to arrange technical personnel to monitor the system running during
the service peak time so that further problems can be handled immediately.
2.2.6 Recording Emergency Maintenance Information
Record emergency maintenance information, including the emergency maintenance time,
version, fault symptom, handling procedures, and result, for a future query. For the format of
the maintenance record information table, refer toAppendix A "4 Emergency Maintenance
Record Table."

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3 Emergency Maintenance Guidelines
About This Chapter
This chapter guides you how to perform emergency maintenance.
3.1 Guide to Collecting Fault Information
This section guides you how to collect and back up fault information as the reference for
troubleshooting.
3.2 Guide to Handling Emergencies
This section guides you how to handle emergencies.
3.3 Guide to Restarting a Device
This section guides you how to restart a device when a fault on the device causes services to
be interrupted and the device fails to restart automatically.
3.4 Guide for Creating a User Account and Elevating a UserAccount Right
3.1 Guide to Collecting Fault Information
This section guides you how to collect and back up fault information as the reference for
troubleshooting.
When an emergency occurs, you need collect and back up fault information on time for
reference. When seeking Huawei technical support, you need provide the collected
information to Huawei engineers for fault location and rectification.
When a fault occurs, collect the following information:
Basic fault information
Device fault information
3.1.1 Collecting Basic Fault Information
This section describes what items need to be collected and how to collect basic fault
information.
Table 3-1 lists the basic fault information to be collected when a fault occurs.

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Table 3-1 Basic fault information table
No.
Item
Collection Method
1
Occurrence time
Record the time when the fault occurs. The value should
be accurate to a minute.
2
Fault symptom
Collect the fault symptom and maintain detailed records.
3
Fault severity level
Record the fault severity level according to the range and
the severity of the fault.
4
Software version
Collect information about the software version on
console through the display version command when you
can log in to the device through Telnet or the serial
interface.
5
Networking
information
Draw a networking diagram showing upstream and
downstream devices and the peer interfaces.
6
Taken measures
Record the measures that have been taken and the
results.
When collecting fault information through command lines, you can copy the information displayed on
the console, such as the serial interface or the Telnet terminal, and then attach it to a txt. file for a record.
3.1.2 Collecting Device Fault Information
This section describes what items need to be collected and how to collect the device fault
information.
When a fault occurs and you can log in to the device through Telnet or the serial interface,
collect the following information.
Table 3-2 Fault information table
No.
Item
Collection Method
1
Device information
Run the display device command to collect the device
information.
2
Temperature
Run the display temperature command to collect the
temperature information.
3
CPU usage
Run the display cpu-usageslotslot-id command to
collect the CPU usage information.
4
Routing table
information
Run the display ip routing-table command to collect
the routing table information.
5
Log information
Run the display logbuffer command to collect the log
information.
6
Alarm information
Run the display trapbuffer command to collect the
alarm information.

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No.
Item
Collection Method
7
Configuration
information
Run the display current-configuration command to
collect the configuration information.
8
Diagnostic
information
Run the display diagnostic-information file-name
command to collect the diagnostic information.
NOTE
By default, running the display diagnostic-information
file-name command saves the device's diagnostic information to
the file with a specified filename in Cfcard:/.
9
Interface information
Run the display interface command to collect the
interface information.
10
Network connectivity
information
Run the ping command to collect information about the
network connectivity and record the results.
When a device runs normally, you are recommended to back up the historical traps and logs in the CF
card through the Trivial File Transfer Protocol (TFTP) or File Transfer Protocol (FTP). For detailed
operations, refer to the HUAWEI ME60 Multiservice Control Gateway Configuration Guide - Basic
Configuration.
3.2 Guide to Handling Emergencies
This section guides you how to handle emergencies.
3.2.1 Failed to Log in to the System Through the Serial Interface
Fault Symptom
After the serial interface of a PC or a terminal is connected to the console interface of the
ME60 through the standard RS-232 configuration cable and the relevant parameters are set,
nothing is displayed on the terminal.
Fault Information Collection
If you are unable to log in to the system through the serial interface, collect the following
information besides the generic information described in the Chapter "3.1 Guide to Collecting
Fault Information" for future reference.
Table 3-3 Fault information table
No.
Item
Collection Method
1
Communications
parameters of the
serial interface
Check whether the communication parameters set for
the software such as Windows-based HyperTerminal for
the communication between serial interfaces are
consistent with the communication parameters set on
the console port of the ME60, such as the bard rate, data