Routine Maintenance(V100R003C00 02)

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Quidway S9300 Terabit Routing Switch

V100R003C00

Routine Maintenance

Issue 02

Date 2010-07-15

HUAWEI TECHNOLOGIES CO., LTD.


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Copyright Huawei Technologies Co., Ltd. 2010. 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 the 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: [email protected]

Issue 02 (2010-07-15) Huawei Proprietary and Confidential

Copyright Huawei Technologies Co., Ltd.

i
http://www.huawei.com/


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About This Document

Intended Audience

This document describes routine maintenance for the S9300 device in terms of routine

maintenance items, maintenance guidelines, maintenance records, and dangerous operations.

This document describes the procedure and method for routine maintenance for the S9300

device.

This document is intended for:

l Network monitoring engineers

l On-site maintenance engineers

l System maintenance engineers

Symbol Conventions

The symbols that may be found in this document are defined as follows.

Symbol Description

DANGER

Indicates a hazard with a high level of risk, which if not

avoided, will result in death or serious injury.

WARNING

Indicates a hazard with a medium or low level of risk, which

if not avoided, could result in minor or moderate injury.

CAUTION

Indicates a potentially hazardous situation, which if not

avoided, could result in equipment damage, data loss,

performance degradation, or unexpected results.

TIP Indicates a tip that may help you solve a problem or save

time.

NOTE Provides additional information to emphasize or supplement

important points of the main text.


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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.

& The parameter before the & sign can be repeated 1 to n times.

# A line starting with the # sign is comments.

Change History

Updates between document issues are cumulative. Therefore, the latest document issue contains

all updates made in previous issues.

Changes in Issue 02 (2010-07-15)

Based on issue 01 (2010-04-30), the document is updated as follows:

The following information is modified:

l 2.2 Routine Maintenance Tasks and Operations

l 2.3.2 Cleaning the Fan Frame

l 2.4.1 Backing Up the Configuration Files

l 2.4.2 Restoring the Configuration Files

l 3.2 Risky Command Executions

l 4 Common Maintenance Commands

l 5 Reference for Routine Maintenance Items and Operations

About This Document


Routine Maintenance

iv Huawei Proprietary and Confidential


Issue 02 (2010-07-15)


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Changes in Issue 01 (2010-04-30)

Initial commercial release.


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Contents

About This Document...................................................................................................................iii

1 Routine Maintenance Overview.............................................................................................1-1

1.1 Objective of Routine Maintenance..................................................................................................................1-2

1.2 Maintenance Specifications.............................................................................................................................1-21.3 Classification of Routine Maintenance...........................................................................................................1-3

1.3.1 Daily Routine Maintenance....................................................................................................................1-3

1.3.2 Periodic Routine Maintenance...............................................................................................................1-4

2 Routine Maintenance Items.....................................................................................................2-1

2.1 Routine Maintenance Items.............................................................................................................................2-2

2.2 Routine Maintenance Tasks and Operations...................................................................................................2-3

2.3 Cleaning the Equipment................................................................................................................................2-11

2.3.1 Cleaning the Air Filter..........................................................................................................................2-12

2.3.2 Cleaning the Fan Frame.......................................................................................................................2-132.3.3 Cleaning the Boards.............................................................................................................................2-16

2.4 Backing Up and Restoring Configuration Files............................................................................................2-17

2.4.1 Backing Up the Configuration Files.....................................................................................................2-17

2.4.2 Restoring the Configuration Files........................................................................................................2-19

2.5 Grounding System Maintenance...................................................................................................................2-20

2.5.1 Checking the Grounding System..........................................................................................................2-20

2.5.2 Measuring the Grounding Resistance..................................................................................................2-20

3 Risky Operations........................................................................................................................3-1

3.1 Risky Hardware Operations............................................................................................................................3-2

3.2 Risky Command Executions...........................................................................................................................3-3

4 Common Maintenance Commands........................................................................................4-1

5 Reference for Routine Maintenance Items and Operations..............................................5-1


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Figures

Figure 2-1 Removing an air filter.......................................................................................................................2-12

Figure 2-2 Installing an air filter........................................................................................................................2-13

Figure 2-3 Removing a fan module....................................................................................................................2-14

Figure 2-4 Installing a fan module.....................................................................................................................2-15

Figure 2-5 Arrangement of probes of an earth resistance tester.........................................................................2-21


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Tables

Table 2-1 List of routine maintenance items........................................................................................................2-2

Table 2-2 Routine maintenance tasks and operations.......................................................................................... 2-3

Table 3-1 Risky hardware operations...................................................................................................................3-2

Table 3-2 Risky command executions..................................................................................................................3-3

Table 4-1 Common maintenance commands....................................................................................................... 4-1


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1 Routine Maintenance OverviewAbout This Chapter

This chapter describes the principles and specifications for routine maintenance and

classification of routine maintenance items, and provides the forms used in routine maintenance.

1.1 Objective of Routine Maintenance

Routine Maintenance is preventive maintenance measure conducted during the normal operation

of the device. Routine Maintenance helps to discover the defects or possible faults of the device

and rectify them, on time. Routine maintenance guarantees long-term, stable, and reliable

operation of the device.

1.2 Maintenance Specifications

This section describes the principles of routine maintenance, including the following:

specifications for the environment of the equipment room, requirements for the maintenance

personnel, specifications for maintenance, specifications for maintenance terminals, and the

other specifications.

1.3 Classification of Routine Maintenance

This section describes the classification of routine maintenance tasks.


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1.1 Objective of Routine Maintenance

Routine Maintenance is preventive maintenance measure conducted during the normal operation

of the device. Routine Maintenance helps to discover the defects or possible faults of the device

and rectify them, on time. Routine maintenance guarantees long-term, stable, and reliable

operation of the device.

NOTE

This manual describes the procedure for maintaining the device through the command line interface (CLI).

To maintain the device through the Huawei network management system (NMS), refer to the relevant

manual.

1.2 Maintenance Specifications

This section describes the principles of routine maintenance, including the following:

specifications for the environment of the equipment room, requirements for the maintenance

personnel, specifications for maintenance, specifications for maintenance terminals, and the

other specifications.

Pay attention to the following specifications while maintaining the device:

Specifications for the Environment of the Equipment Room

Adhere to the following rules:

l Maintain the environment of the equipment room in compliance with the related industry

standards.l Keep the room clean, tidy, dust-proof, and moisture-proof.

l Take precautions to prevent the growth of fungi and mildew.

l Take precautions to prevent the entry of rodents and insects into the room.

Requirements for the Maintenance Personnel

Maintenance personnel should meet the following requirements:

l Only trained maintenance personnel can undertake maintenance tasks.

l The maintenance personnel must be familiar with maintenance theory, and be good at basic

operation skills and emergency handling skills.

During maintenance, the personnel must strictly follow the operation procedures and

industry safety standards to prevent accidents.

Specifications for Maintenance


l Establish scientific and strict regulations to ensure effective device maintenance.

l Carry out a check periodically and maintain the records.

l

Manage management-level passwords properly and change them regularly to ensuresecurity. Assign different passwords to maintenance personnel to ensure system security.

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l Record all the significant operations, such as board switching, system resetting, and

software loading. Before performing such operations, analyze the situation and take backup

emergency and security measures.

l Authorize and control the modification of data, back up the data before modification, and

maintain modification records.l Wear anti-static wrist straps while operating the device. If a board is faulty, store it in an

anti-static bag.

Specifications for Maintenance Terminals


l Do not install invalid firewall software and anti-virus software on the maintenance terminal.

Other Specifications


l Ensure the availability of spare parts, especially the boards. In case of failure, replace the

faulty part.

l Return the faulty part to the Huawei local office or the sales agent of Huawei for repair.

l If the fault cannot be rectified, contact the Huawei Customer Service Center or the local

Huawei office for technical assistance.

1.3 Classification of Routine Maintenance

This section describes the classification of routine maintenance tasks.

According to the maintenance period, routine maintenance is classified into two types: daily

routine maintenance and periodic routine maintenance.

1.3.1 Daily Routine Maintenance

1.3.2 Periodic Routine Maintenance

1.3.1 Daily Routine Maintenance

Daily routine maintenance is carried out by the ordinary maintenance personnel.

The daily routine maintenance items are:

l Alarm system

l Operation status of the device

Daily routine maintenance is performed to:

l Locate alarms or other problems and solve them promptly. This helps in the stable

functioning of the device and lowers the failure rate.

l Find out the faults on the links or connections quickly and solve them to ensure normal

provision of services.

l

Have real-time information about the operation of the device and the network. This helpsto improve the efficiency of troubleshooting.


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1.3.2 Periodic Routine Maintenance

Periodic routine maintenance is relatively complex. It must be carried out by the maintenance

personnel who have undergone professional trainings.

The periodic routine maintenance items are:

l Power supply

l Grounding resistance

l Dust on the device

Periodic maintenance is done to:

l Ensure the secure and stable operation of the device for a long period.

l Check for problems such as device aging, function failures, and performance degradation.

You can do this by regularly checking, testing and cleaning the devices and creating a

backup of the data.

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2 Routine Maintenance ItemsAbout This Chapter

This chapter lists the routine maintenance items.

2.1 Routine Maintenance Items

The following are the maintenance cycle and maintenance items.

2.2 Routine Maintenance Tasks and Operations

This section describes the recommended cycle, operations, and references for routine

maintenance.

2.3 Cleaning the EquipmentThis section describes how to remove dust from air filter, fan frame, and boards.

2.4 Backing Up and Restoring Configuration Files

This section describes how to back up and restore configuration files.

2.5 Grounding System Maintenance

How to maintain the grounding system.


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2.1 Routine Maintenance Items

The following are the maintenance cycle and maintenance items.

NOTE

l The installation tools, meters, and related devices are not delivered with the S9300.

l Meters must be calibrated before use.

The stable running of the S9300 depends on the network planning and the routine maintenance.

In addition, fast location of the hidden hazards is necessary.

The routine maintenance items are the references and suggestions for maintenance of the running

environment, software and hardware of the S9300.

In routine maintenance, you can maintain the S9300 according to the maintenance items. Inaddition, you can add or delete the routine maintenance items according to the actual networking

and environment of the equipment room.

Table 2-1 lists all the routine maintenance items mentioned in this document.

Table 2-1 List of routine maintenance items

MaintenanceCycle

Maintenance Item

Daily Logs and alarms

Temperature and voltage

Fan and power supply

CPU usage and memory usage

Monthly Configuration files

Available space on the CF card

License information

System time

Interface traffic

Board running status

OSPF/IS-IS/BGP neighbor status

Routing information

Management-level user control

Telnet control

Anti-attack detect

FTP password control

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MaintenanceCycle

Maintenance Item

Change of the login password

Backup of configuration files and log files

Temperature and humidity in the equipment room

Quarterly Cleaning of air filters

Yearly Cleaning of fan frames, and boards

2.2 Routine Maintenance Tasks and Operations

This section describes the recommended cycle, operations, and references for routinemaintenance.

Table 2-2 Routine maintenance tasks and operations

MaintenanceTask

RecommendedCycle

Operation Guide Standards for Reference Result

Equip

me

nt

roo

m

Ambienttemperatu

re

Monthly

View the thermometerin the equipment room.

l Long-term operatingtemperature: 0C-45C;

Short-term operating

temperature: -5C-55C.

l If the temperature in the

equipment room cannot

meet the requirement for a

long time, the carrier may

need to repair or replace the

air conditioning.

l Check that the refrigeration

function is normal andswitch of the air

conditioning is well

contacted.

NOTEShort-term operating conditions

mean that the continuous

working time does not exceed 48

hours and the accumulated time

per year does not exceed 15

days.





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MaintenanceTask

Recommended

Cycle


Ambient

humidity

Mont

hly

View the hygroscope in

the equipment room.

l Normally, the relative

humidity in long-term

operating environment is

between 5%RH and 85%

RH, non-condensing; that

in short-term operating

environment is between

0%RH and 95%RH, non-

condensing.

l If the relative humidity ofthe equipment room is

high, the carrier may need

to install a dehumidifier. If

the relative humidity of the

equipment room is low, the

carrier may need to install

a humidifier.

Ba

sic

inf

orma

tio

n

Alarms Daily Run the display alarm

all command to view the

alarms related to hot

backup, restart, hotswapping of boards,

removal and installation

of fans and power

modules, abnormal

temperature, abnormal

clock, and chip

exception.

Run the display

trapbuffer command to

view the alarms in the

buffer.

l No alarm is generated.

l If an alarm is generated,

record it. If a major alarm

or more serious alarm is

generated, analyze and

process it immediately.

Logs Daily Run the display

logbuffer command.

l There are no repeated logs.

l If a lot of repeated logs

occur, analyze and process

them immediately.



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MaintenanceTask

Recommended

Cycle


Configura

tion files

Mont

hly

Run the display

current-configuration

and display saved-

configuration

commands to view and

save the current

configuration.

Run the compare

configuration

command to comparethe current

configuration with the

saved configuration.

Run the dir and display

startup commands.

l The current configuration

must be the same as the

saved configuration.

l The configuration must

meet the user

requirements.

l The configuration file

names, file size, and file

saving time on the master

and slave MPUs must be

the same.

Files in

the CF

card

Mont

hly

Run the dir command. l All the files in the CF card

must be useful; otherwise,

delete the undesired files

by using the delete/

unreserved commands.

License

informati

on

Mont

hly

Run the display license

command.

l The license is activated and

the current time is earlier

than "Run time."

Patch

informati

on

Mont

hly

Run the dir and display

patch-information

commands.

l The installed patches must

meet the requirements. The

latest patch released by

Huawei corresponding to

the product is

recommended.

l The patches have taken

effect. That is, the value of"Total Patch Unit" is the

same as the value of

"Running Patch Unit."





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MaintenanceTask

Recommended

Cycle


Ru

nni

ng

stat

us

of

the

equ

ip

ment

Temperat

ure

Daily Run the display

temperature { all |

slot } ordisplay health

command.

l The temperature of each

module should be between

the upper limit and lower

limit. That is, the value of

"Status" is "normal."

Voltage Daily Run the display

voltage {all | slot } or

display health

command.

l The voltage of a board

should be between the

upper limit and lower limit.

That is, the value of

"Status" is "normal."

Fan status Daily Run the display fan or

display health

command.

l The value of "present" is

"YES."

l The value of "register" is

"YES."

Power

status

Daily Run the display power,

display power system,

ordisplay health

command.

l The value of "State" is

"On."

l If the "Present" field of the

power supply is "YES", the

value of State should be

Supply.

System

time

Mont

hly

Run the display clock

command.

l Check the system date and

time. The system time must

be the same as the local

time. (The difference is less

than five minutes.)

l If the system time is

incorrect, run the clock

command to change the

time or run NTP.

CPU

usage

Daily Run the display cpu-

usage [ slave | slotslot-

id] ordisplay health

command.

l The value of "CPU Usage"

should be smaller than the

value of "Upper Limit."

l If the CPU usage remains

high, check the device to

locate the problem.



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MaintenanceTask

Recommended

Cycle


Memory

usage

Daily Run the display

memory-usage [slave |

slotslot-id] ordisplay

health command.

l The memory usage should

be smaller than the value of

"Upper Limit."

l If the memory usage

remains high, check the

device to locate the

problem.

Interface

traffic

Mont

hly

Run the display

interface command.

l If the current interface

traffic is more than 80% ofthe interface bandwidth,

record the event and find

out the reason.

l Check whether there are

errored packets in the

inbound or outbound

direction. Pay attention to

the increase of errored

packets and check the

interval of errored packets.

Boardrunning

status

Monthly

Run the display devicecommand.

Run the display reset-

reason command.

l The value of "Online"should be "Present."

l The value of "Power"

should be "PowerOn."

l The value of "Register"

should be "Registered."

l The value of "Alarm"

should be "Normal."

l No board is reset

abnormally.





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MaintenanceTask

Recommended

Cycle


Active/

standby

switchove

r

Mont

hly

Run the display

switchover state

command.

l When the software and

hardware of the device are

normal and the software

versions are consistent, the

following information

should be displayed (Take

the S9312 for example):

Slot 7 HA FSM State

(master): realtime or

routine backup.

Slot 8 HA FSM State

(slave): receiving realtime

or routine data.

l If no slave MPU is

installed, the following

information is displayed:

"Slot D HA FSM State

(master): waiting for the

slave to be inserted."

Startupfile Monthly Run the displaystartup command.

l

The startup file should becorrect.

System

software

and board

software

versions

Mont

hly

Run the display

version orcheck

version all command.

l Normally, the displayed

system software and board

software versions meet the

requirements. If two MPUs

are installed, the software

versions of the active and

standby MPUs must be the

same.

Ro

uting

inf

or

ma

tio

n

OSPF

neighborstatus

Mont

hly

Run the display ospf

peer command.

Run the display ospf

peer last-nbr-down

command.

l The value of "State" should

be "Full."

l The neighbor relationship

should be retained for at

least one day.

l Normally, no neighbor is in

Down state.

IS-IS

neighbor

status

Mont

hly

Run the display isis

peer command.


be "Up."



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MaintenanceTask

Recommended

Cycle


BGP peer

status

Mont

hly

Run the display bgp

peer command.


be "Established."

Routing

informati

on

Mont

hly

Run the display ip

routing-table

command. Compare the

routing information

with that displayed the

last time and check

whether the routes

change greatly.

Run the ping ortracert

command for some

routing entries.

l The routing table should

contain the default route.

l On all the devices running

the same routing protocol

at the same layer of a

network, the routing

entries should be almostidentical. If static routing is

configured, the routing

entries in the routing tables

of different devices may

differ.

Us

er

ma

nag

em

entand

sec

urit

y

ma

nag

em

ent

Managem

ent-level

user

control

Mont

hly

Run the display


| include super

password command.

l The super user password

must be set in the system

and the password should be

in cipher text.

l If the password setting is

incorrect, run the superpassword command to set

the super user password in

cipher text.

Telnet

control

Mont

hly

Run the display


| include password

command.

l The Telnet user password

and the super user

password must be

different.

l The password should be in

cipher text.

Attack

defense

detection

Mont

hly

Run the display


| includecpcar

command.

l The attack defense

function should be

configured.





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MaintenanceTask

Recommended

Cycle


FTP

password

control

Mont

hly

Run the display


| include password

command.

l The FTP user password

and the super user

password must be

different.

l The password should be in

cipher text.

Changing

login

password

Mont

hly

Run the local-user

usernamepassword

cipherpasswordcommand in the AAA

view.

For the user that adopts

local password

authentication, run the

set authentication

password command to

change the password.

l The password is a string of

at least 6 characters, in

cipher text.l The password is changed at

least once a quarter.

Backup of

configurat

ion file

Mont

hly

Back up the

configuration file to the

server.l To back up the

configuration file

through TFTP, run

the tftpput

command in the user

view.

l To back up the

configuration file

through FTP, run the

get command in the

FTP client view.For details, see 2.4.1

Backing Up the

Configuration Files.

l The configuration file

saved on the server is the

same as that on the device.



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MaintenanceTask

Recommended

Cycle


Backup of

log file

Mont

hly

Back up the log file to

the server.

l Run the save logfile

command to save the

log file to the CF

card.

l To back up the log

file through TFTP,

run the tftpput

command in the user

view. To back up the

log file through FTP,

run the get command

in the FTP client

view.

The methods of backing

up the configuration file

and log file are the same.

For details, see 2.4.1

Backing Up the

Configuration Files.

l The log file saved on the

server is the same as that on

the device.

Cle

ani

ng

Cleaning

the air

filter

Quar

terly


Cleaning the Air

Filter.

l The air filter should be

clean.

Cleaning

the fan

frame

Yearl

y


Cleaning the Fan

Frame.

l The fan frame should be

clean.

Cleaning

the board

Ever

y two

years

Replace the boards with

spare boards one by one,

and remove dust from

the boards. For details,see 2.3.3 Cleaning the

Boards.

l The boards should be

clean.

l It is recommended that you

clean the boards every two

years.

2.3 Cleaning the Equipment

This section describes how to remove dust from air filter, fan frame, and boards.





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WARNING

l Take ESD preventive measures. For example, you must operate at an antistatic workbench

and wear antistatic clothes and wrist straps.l To ensure heat dissipation and ventilation of the system, and prevent the air filter from being

covered by dust, clean the air filter every three months. If the equipment room is dusty, clean

it more frequently.

2.3.1 Cleaning the Air Filter

2.3.2 Cleaning the Fan Frame

2.3.3 Cleaning the Boards

2.3.1 Cleaning the Air Filter

Context

The air filter of the S9300 prevents dust in the air so that the heat dissipation and ventilation

conditions in the chassis are good.

The air filter does not needpower and is hot swappable. It is convenient for cleaning.

Tools

l ESD-preventive wrist straps or gloves

l Cross screwdriver

Procedure

Step 1 Remove the air filter.

1. Wear the ESD-preventive wrist strap and connect the grounding terminal to the ESD jack

on the rack.

2. Loosen the captive screws of the air filter anti-clockwise with a Phillips screwdriver, as

shown in Figure 2-1.

3. Grasp the handle of the air filter and pull out the air filter, as shown in Figure 2-1.

Figure 2-1 Removing an air filter



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Step 2 Clean the air filter.

1. Dust off air filter.

2. Flap and vacuum the air filter or wash the air filter and dry it.

Step 3 Install the air filter.

1. Insert the clean and dry air filter into the chassis, as shown in Figure 2-2.

2. Tighten the captive screws of the air filter with a Phillips screwdriver, as shown in Figure

2-2.

Figure 2-2 Installing an air filter

----End

2.3.2 Cleaning the Fan Frame

Context

During the operation of the device, the fan, the controlling circuit board and some other parts of

the fan frame absorb the dust in the air. When dust is accumulated, the operation of the fan frame

will be unstable. In addition, the accumulated dust becomes the pollution source of the service

cabinet and hence threats the stable operation of the device. To ensure the stable operation of

the device, clean all the fan frames every year.

Precautions

DANGER

Do not put your hands into the running fans!





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CAUTION

The operation must be completed within five minutes; otherwise, the safety and stability of the

device will be severely affected because of the high temperature.

Tools

l ESD-preventive wrist strap or ESD-preventive gloves

l Phillips screwdriver

Procedure

Step 1 Clean the spare fan frame.

Clean the fan, controlling circuit board and other parts of the spare fan frame with clean cottonpledget, antistatic soft brush and vacuum cleaner. There should be no dust on the fan frame after

cleaning.

Step 2 Replace the fan frame to be cleaned.

1. Check the position of the fan frame to be cleaned.

Before removing a fan frame that is to be replaced, check the position of the fan frame, for

example, the cabinet and chassis where the fan frame is installed. Then, find out the fan

frame to be replaced in the chassis and attach a label to the panel to identify the fan frame.

2. Wear the ESD-preventive wrist strap and connect the grounding terminal to the ESD jack

on the rack.

3. Remove the fan frame to be replaced from the chassis.

a. Loosen the four captive screws on both sides of the fan frame with a Phillips

screwdriver, as shown in Figure 2-3.

b. Grasp the handles on the two sides of the fan frame and pull out the fan frame, as

shown in Figure 2-3.

Figure 2-3 Removing a fan module

4. Locate the spare fan frame in the chassis.



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a. Grasp the handles on the two sides of the fan frame and push the fan frame into the

chassis, as shown in Figure 2-4. When you push the fan frame, align the locating

holes on the panel of the fan frame with the bolts on the chassis. Push the fan frame

gently until the panel of the fan frame touches the two sides of the chassis.

b. Tighten the captive screws clockwise with a Phillips screwdriver to secure the fanframe in the chassis, as shown in Figure 2-4.

Figure 2-4 Installing a fan module

5. Verify the function of the new fan frame.

In normal situations, after a new fan frame is inserted into the chassis, the fans immediately

start to operate to blow air into the chassis. In this case, you can check whether the fan

frame functions normally as follows:

l If the STATUS indicator on the panel of the fan module is green and blinks at the

frequency of 0.5 Hz, it indicates that the fan frame runs normally. If the indicator is red,

it indicates that the fan frame is abnormal.

l Run the display fan command to view the running status of the new fan frame. If the

output is displayed as follows, it indicates that the new fan frame works normally. Take

the S9312 for example:

display fan

-------------------------------------------------------------

FanId FanNum present register Speed MODE

-------------------------------------------------------------

17 [1-0] YES YES 100% AUTO18 [1-0] YES YES 100% AUTO

19 [1-0] YES YES 100% AUTO

20 [1-0] NO NO 0% AUTO

The preceding output information indicates that the fan frame status is restored to normal.

If the fan frame is still abnormal, contact the Huawei local office for technical support.

NOTE

The fan IDs of the S9300 correspond to the fan frames on the S9300. The fan frame with a small ID is in

the upper part of the chassis, and the fan frame with a large ID is in the lower part of the chassis. For

example, on the S9312, the fan frame with the ID being 17 is on the top of the chassis, and the other fan

frames are below it.

Step 3 Clean the replaced fan frame.





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Clean the fan, controlling circuit board, and other parts of the spare fan frame with clean cotton

pledget, antistatic soft brush, and vacuum cleaner. This fan frame is used as the spare one after

cleaning.

----End

2.3.3 Cleaning the Boards

Context

During the operation of the device, dust accumulates on the boards because of air convection in

the process of heat dissipation. More dust accumulates on boards if the air is not clean and the

relative humidity is low. When dust is accumulated, the heat dissipation and the electric

insulation of boards are affected. This threatens the stable operation of the device.

To ensure the stable operation of the device, clean all the boards every two years.

Tools

You can choose the tools according to the actual situation:

l Dust cleaner

l Detergent

l ESD-preventive wrist straps or gloves

Precautions

WARNING

l Take ESD preventive measures during the whole process of routine maintenance. For

example, perform operations on an antistatic workbench and wear antistatic clothes and wrist

straps.

l Use the detergent that conforms to the industry standard; otherwise, the board may be

damaged.

CAUTION

Removing boards that are in service may affect the operation of services. Therefore, clean the

boards when traffic volume is low, for example, between 2:00 a.m. and 4:00 a.m.

Procedure

Step 1 Prepare spare boards.

You must prepare a spare board for each board in the cabinet before you clean all the boards.



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Step 2 Replace boards.

Replace a board with the spare board. You can start removing the dust from the board only when

the spare one is running normally.

For details about how to replace boards, see Quidway S9300 Terabit Routing Switch PartsReplacement.

Step 3 Remove dust.

The process of cleaning the boards should be such that the physical attributes and electrical

attributes of the boards are protected. The two ways to clean dust are as follows:

l Using the vacuum

Brush dust off the board surface with a clean and dry antistatic soft brush and align the dust

intake of a vacuum with the brush. In this case, dust is removed immediately when it is

brushed off.

This method features simple operation and low cost. But it is difficult to remove harmful gasthat is adsorbed on the board surface.

l Using the detergent

Use the anhydrous, erosion-free, non-conductive, and highly volatile detergent such as

Isopropyl Alcohol (IPA) to remove dust from boards.

CAUTION

It is recommended that you wear respirator when you use the detergent such as IPA.

This method helps to remove dust and harmful gases that are adsorbed on the board surface.

It, however, is a complex operation and involves high cost.

Step 4 Reuse boards.

Due to the limited number of spare boards, you can use the cleaned boards to replace the dirty

ones.

----End

2.4 Backing Up and Restoring Configuration FilesThis section describes how to back up and restore configuration files.

2.4.1 Backing Up the Configuration Files

2.4.2 Restoring the Configuration Files

2.4.1 Backing Up the Configuration Files

Context

You can back up the configuration files by using the following ways:





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Procedure

l Copying the screen directly

In the CLI, run the display current-configuration command. Copy all the display to txt

documents, then back up the configuration files to the hard disk of the maintenance terminal.l Backing up the configuration files through TFTP

1. Copy the configuration files in the CF card directly.

This action is to back up the current configuration files that are stored in the CF card

of the router.

After startup of the device, use the following commands to back up the configuration

files in the CF card of the router.

save cfcard:/config.cfg

Are you sure to save the configuration to flash:/config.cfg?[Y/N]:y

Now saving the current configuration to the slot 4 ......

Save the configuration successfully. copy config.cfg cfcard:/backup.cfg

Copy flash:/config.cfg to cfcard:/backup.cfg?[Y/N]:y

100% complete/

Info: Copied file flash:/config.cfg to cfcard:/backup.cfg...Done.

2. Assign an IP address for the router.

The router acts as the TFTP client.

Connect the router to the maintenance terminal. Establish the Telnet environment and

assign an IP addresses for the interface. A reachable route must exist between the

TFTP client and the TFTP server.

3. Start the TFTP server application program.

Start the TFTP server application in the PC. Set the path, the IP address, and the port

number of the TFTP server to download the configuration files.

4. Transfer the configuration files.

In the user view, run the tftp command.

tftp 10.110.24.209 put config.cfg

Info: Transfer file in binary mode.

Uploading the file to the remote TFTP server. Please wait.../

TFTP: Uploading the file successfully.

3501 bytes send in 1 second.

l Backing up the configuration files through FTP

1. Connect the router to the maintenance terminal, establish the Telnet environment and

assign an IP address for the interface.

2. Start the FTP service.

The router acts as the FTP server.

Start the FTP server on the router. Create an FTP user whose username is router and

password is 123. Authorize the user to visit cfcard:\.

system-view

[Quidway] ftp server enable

[Quidway] aaa

[Quidway-aaa] local-user router password cipher 123

[Quidway-aaa] local-user router ftp-directory cfcard:/[Quidway-aaa] local-user router service-type ftp



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3. Initiate an FTP connection to the router from the maintenance terminal.

On the PC, establish an FTP connection with the router through the FTP client. For

example, the IP address of the router is 10.110.24.254.

C:\Documents and Setting\Administrator> ftp 10.110.24.254Connected to 10.110.24.254.

220 FTP service ready.

User (10.110.24.254:(none)): router

331 Password required for router.

Password:

230 User logged in.

4. Set the parameters.

After the FTP user passes authentication, the FTP client prompts "ftp>". Enter

binary and specify the directory for storing the configuration files on the FTP client.

ftp>binary

200 Type set to I.

ftp> lcd c:\temp

Local directory now C:\temp.

5. Transfer the configuration files.

Run the get command on the PC to download the configuration files to the local

specified directory and save them as backup.cfg.

ftp> get config.cfg backup.cfg

200 Port command okay.

150 Opening ASCII mode data connection for config.cfg.

226 Transfer complete.

ftp: 1021 bytes received in 0.06Seconds 60.02Kbytes/sec.

ftp>

6. Check whether the config.cfg and backup.cfg files are of the same size. If they are

of the same size, the backup is successful.

----End

2.4.2 Restoring the Configuration Files

Context

You can restore the configuration files through the following ways:

NOTE

After restoring the configuration files, restart the device to make the configuration files take effect. Run

the startup saved-configuration command to specify the configuration file for next startup. If theconfiguration file name is unchanged, you do not need to run this command. Then run the reboot command

to restart the device.

Procedure

l Restoring the configuration files saved in the CF card

This operation is to restore the configuration files saved in the CF card of the device as the

configuration files of the current system.

Run the following commands when the device works normally.

copy cfcard:/backup.cfg cfcard:/vrpcfg.zipCopy cfcard:/backup.cfg to cfcard:/vrpcfg.zip?[Y/N]:y





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100% complete/

Info: Copied file cfcard:/backup.cfg to cfcard:/vrpcfg.zip...Done.

l Restoring the configuration files saved in the PC through TFTP

The device works as the TFTP client. The restoration procedure is similar to that ofbacking

up the configuration files through TFTP. Run the tftpget command to download theconfiguration files saved in the PC to the CF card of the device.

l Restoring the configuration files saved in the PC through FTP

The device acts as the FTP server. The restoration procedure is similar to that ofbacking

up the configuration files through FTP. Run the put command to upload the

configuration files saved in the PC to the CF card of the device.

----End

2.5 Grounding System Maintenance

How to maintain the grounding system.

2.5.1 Checking the Grounding System

2.5.2 Measuring the Grounding Resistance

2.5.1 Checking the Grounding System

To maintain the grounding system, check the following:

l Check the electrical contact between the metallic parts and the cabinet body. The metallic

parts and the cabinet body must be well contacted. The contact points such as screw holes,

guide lanes, and lifting ears cannot be painted. Otherwise, bad electrical contact may occur.

l Check the grounding terminals at the front and back doors and the side doors. These

terminals must be well connected with the grounding wires.

l Check the grounding buses of combined neighboring cabinets. If cabinets are combined,

the neighboring cabinets must be connected by a grounding bus.

l Check the yellow and green protecting grounding cables. One end of a grounding cable

should connect the PGND grounding bus of the power distribution cabinet in the equipment

room, and the other end connects the grounding terminal of the cabinet. The screws that

fix the grounding cable must be secure.

2.5.2 Measuring the Grounding ResistanceNOTE

The grounding resistance of a comprehensive communication building should be no more than 1 ; that

of a common communication station should be no more than 5 ; that of the place with high earth

resistibility should be no more than 10 .

To measure the grounding resistance, use an earth resistance tester. Figure 2-5 shows the arrangement of

the probes of an earth resistance tester.



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Figure 2-5 Arrangement of probes of an earth resistance tester

NOTE

l Position the current probe and the voltage probe in a manner that is perpendicular to the wires of a

grounding net or underground metallic pipes.

l Do not measure the grounding resistance immediately after a rain.

l The distance between the current probe and the rim of a grounding net is d1 and the length

of the maximum diagonal line of a grounding net is D. d1 should be 4-5 times as much as

D.

l The distance between the probe and the side of a grounding net is d2. d2 is 50%-60% of

d1.

l During measurement, move the voltage probe along the line connecting the grounding net

and the current probe three times; the distance of each movement is 5% of d1. If the threeresistance values are similar, it means that the grounding resistance is normal.

NOTE

If measuring d1 is difficult, you can take 2D instead of d1 and take D instead of d2 in a place where the

earth resistibility is the same. In a place where the resistibility is different, you can take 3D instead of d1

and take 1.7D instead of d2.





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3 Risky OperationsAbout This Chapter

This appendix describes the operations that may cause human injury or equipment fault.

3.1 Risky Hardware Operations

The following hardware operations may affect the service running and hardware safety or harm

the human body; therefore, perform the following operations with caution.

3.2 Risky Command Executions

Only trained and qualified personnel can run the commands listed in this section.


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3.1 Risky Hardware Operations

The following hardware operations may affect the service running and hardware safety or harm

the human body; therefore, perform the following operations with caution.

Table 3-1 Risky hardware operations

Item Sub-item Consequences of Mal-operations

Operations

on boards

Hot swapping the in-

service active main board

is prohibited.

l When the standby main board runs normally,

data synchronization between the active

board and the standby one requires a certain

period. When the active main board is

plugged out, the system performs automatic

switchover. The latest data on the active main

board, however, cannot be backed up entirelyto the standby main board. This results in

wrong statistics and data loss.

l When the standby main board fails, removing

the in-service active main board results in

interruption of part of or even all services.

Pressing the Reset button

on the main board at will is

prohibited.

l Pressing the Reset button on the panel forces

the board to reset its hardware. This operation

can be carried out only by the qualified

personnel when fatal faults occur in the

system.

l If the Reset button on the panel is pressed by

mistake, the main board will be reset. Its

results are the same as those of removing the

in-service active main board.

Inserting or removing

boards without wearing an

antistatic wrist strap is

prohibited.

l Electrostatic discharge on human body

damages electrical components on the board.

l If the maintenance personnel insert or remove

boards without wearing an antistatic wrist

strap, the board may be damaged or may not

run properly.

Debugging the serial port

of the board through the

serial cable is prohibited.

Only Huawei engineers can use the debugging

serial port. Otherwise, abnormality of board

program or board resetting may be caused.

Operations

for cable

Installing or removing

network cables inside the

cabinet at will is

prohibited.

l The network cables inside the cabinet are used

for communication between the host and the

maintenance terminal.

l Installing and removing the cables inside the

cabinet at will may cause the maintenance

terminal to fail to log in to the switch.

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Item Sub-item Consequences of Mal-operations

Operations

for power

supply

Switching on or switching

off the power supply in the

power distribution frame of

the cabinet at will is

prohibited.

l Only in the case of upgrading, expansion,

parts replacement or fatal faults, the

maintenance personnel can operate the power

supply following the guidelines.

l Operations at will may cause fatal faults such

as shut-down of the device and interruption of

the services.

3.2 Risky Command Executions

Only trained and qualified personnel can run the commands listed in this section.

Table 3-2 Risky command executions

Classification Command Function Consequences of Mal-operations

Reboot reboot Rebooting the

system

This command can be used only

in the case of office deployment

or upgrading. Otherwise, the

services carried by the device

will be interrupted.

Schedule reboot schedule reboot Rebooting the

system onschedule

This command can be used only

in the case of office deploymentor upgrading. Otherwise, the

services carried by the device

will be interrupted.

Reboot slave restart Restart the slave

main control

board.

Only trained and qualified

personnel can run this command

during deployment or upgrade.

Forcible

switchover

slave switchover The switchover

is performed

forcibly.

If the data on the master board

and slave board is not

synchronized, the configuration

data is lost and services areinterrupted.

Formatting formatdevice-

name

Formatting the

storage device

Running this command causes

the loss of all the files on the

specified storage device, and the

files cannot be restored.


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Classification Command Function Consequences of Mal-operations

Deletion delete [ /

unreserved ]

filename

Deleting the

specified files in

the storage

device

Running this command deletes

the specified files in the storage

device of the switch. If you use

the unreserved command when

deleting files, the files cannot be

restored.

User interface authentication-

mode

Authenticating

the login users

When setting user

authentication on the console

port and the VTY interface, if

the mode is password orAAA,

you must configure the

password or user name for

logging in to the router.

System

maintenance

startup Setting the host

file for next

startup

In the active/standby mode,

configure the large files for the

next startup on the active and

standby main boards at the same

time. Otherwise, the switch will

restart repeatedly.

System

maintenance

upgrade Upgrading a

board

Running this command will

interrupt the services.

System

maintenance

power off slot

slot-id

Powering off a

board

Running this command will

power off a board and interruptthe services.

System

maintenance

reset commands Clearing data

and resetting

hardware

Running a reset command will

clear the specified data. For

example, running the reset

logbuffer command can clear

the data in the log buffer;

running the reset slot command

can reset an LPU to interrupt

services.

System

maintenance

save Saving data If the save operation is

performed improperly, the

configuration data will be lost or

wrong.

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4 Common Maintenance CommandsThis appendix describes the commonly used commands for routine maintenance.

Table 4-1 shows the common maintenance commands.

Table 4-1 Common maintenance commands

Command Function

dir Displays the information on the specified file

or directory in the storage device of the

S9300.

display alarm {slot-id| all } Displays alarms.

display bgp peer Displays the information on BGP peers.

display clock Displays the current date and time of the

S9300.

display cpu-usage Displays the information on CPU usage.

display current-configuration Displays the current valid parameters of the

S9300.

display fan Displays the status of the fan.

display fib Displays the total number of the FIB entries.

display device [ pic-status| slot-id] Displays the basic information on the router.

display ftp-server Displays the parameters of the current FTP

server.

display interface Displays the operating status and statistics of

an interface.


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Command Function

display ip interface [ interface-type

interface-number]

Displays the detailed IP-related

configurations and statistics of an interface.

The packets, bytes, and multicast packets

transmitted and received, and broadcast

packets received, sent, and discarded are

included.

display ip routing-table Displays the brief information of the IPv4

routing table.

display isis peer Displays the IS-IS peer relationship.

display logbuffer Displays the record in the log buffer.

display memory-usage Displays the CPU usage of the router.

display ospf[process-id] brief Displays the brief information of OSPF.

display ospf[process-id] peer Displays OSPF neighbors.

display ripprocess-idneighbor Displays RIP neighbors.

display patch-information Displays the status of the patch.

display power Displays the status of the power supply.

display saved-configuration Displays the configuration files for next

startup of the router.

display startup Displays the system software and theconfiguration file names related to the current

and next startup.

display switchover state Displays the backup status of the active and

standby boards.

display temperature Displays the status of the slot temperature

sensor.

display trapbuffer Displays the record in the alarm buffer.

display voltage slotslot-id Displays the status of voltage sensor in the

specified slot.

display version Displays the version of system software.

ping Displays IP network connection.

You can check whether the host is reachable.

tracert Tests the gateways the packets pass through

from the host to the destination.

You can check the network connection to

locate the faults.

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5 Reference for Routine Maintenance Itemsand Operations

This section describes the routine maintenance items and operations that are not used often.

Maintenance Item Operation Guide

Standards forReference Result

Interface and

link status

Run the display

interface brief

command.

l The interface or link in

use is in Up state, and

the interface not in use

is in Down state.


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Interface

configuration

Run the display

interface ordisplay

current-

configuration

command.

Check the status and

configurations of the

interface.

l No command except

shutdown can be run

on the interface in

Down state.

l The interface in Up

state must be

configured.

l After two query

operations, the Input

and Output packets onan interface in Up state

should be increased

every time. If no

traffic is transmitted

or received on the

interface, the packets

are not increased.

l After two query

operations, the

number of discarded

packets should be the

same as the number oferrored packets. That

is, there are no packets

newly discarded or

new errored packets.

l The operating modes,

including speeds and

duplex modes, on the

two ends must be the

same.

5 Reference for Routine Maintenance Items and Operations


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Interface

description

Run the display

interface

command.

l The description of the

active interfaces

should comply with

the description

standards of

customers.

l If the customers do not

have the description

standards, following

the rule: Local device

name-Local port

number->Peer device

name-Port number-//

Interface speed.

IP interface Run the display ip

interface brief

command.

l Check the IP address

of the interface.

l The displayed

information includes

IP address, physical

status of the interface,

protocol status, and

interface description.

IP address Run the display

interfacecommand.

l For the IP addresses of

the interfaces betweennetwork devices, the

subnet mask contains

30 bits.

MTU Run the display

interface

command.

l The MTU is the same

as the MTU of the

connected interface.

Statistics on

an interface

Run the display ip

interface

command. After

five minutes, run the

command again.

Then collect data

twice and compare

the data.

l If the system runs

normally, the data

does not change when

you run the command

for the second time

and the value is equal

to or smaller than 500.

Mirroring

port

Run the display

port-mirroring

command.

l If a mirroring port is

not used, run the undo

observe-port

command to delete it.

FTP port Run the display ftp-

server command.

l The FTP port not in

use should be shut

down.





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Cleaning View the outside

and inside of the

chassis, the air filter

in the chassis, the

floor, and the table

top.

l No obvious dust

exists.

l If the air filter is

covered by dust, clean

or replace it in time;

otherwise, the heat

dissipation in the

chassis is affected.

Heat

dissipation

View the heat

dissipation

condition in the

chassis.

l When the device

works normally, all

the fans should

operate normally

(except for the fansthat are being

cleaned). Power off

the fans will increase

the temperature of the

device, and the boards

may be damaged.

l Do not place anything

at the air intake of the

chassis and clean the

fans and air filter

periodically.

Cable layout View the cable

layout in the chassis.

l The power cables

should be separated

from the service

cables. The cables

should be deployed

orderly.

Cable label View the cable

labels in the chassis.

l The labels are clean,

correct, and

standardized.

Appearance

of the chassis

Check whether the

chassis is complete.

l Check whether the

chassis is complete.

The chassis should not

be damaged or go

moldy. The blank

panel is installed in the

empty slot.



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Heat

dissipation in

the chassis

Check whether heat

dissipation in the

chassis is normal.

l The air intake is not

covered by dust and

the heat dissipation in

the chassis is normal.

If the air filter is

covered by dust, clean

it in time. It is

recommended to clean

the air filter quarterly.


Cleaning the Air

Filter.

Undesired

configuration

s

Run the display

current-

configuration

command.

l All the configurations

should be useful;

otherwise, delete the

undesired

configurations.

Power supply

backup

Check whether the

power supplies are

backed up.

l The S9312 and S9306

both have four power

supplies and the

S9303 has two power

supplies. The switches

of the power supplies

that work in backup

mode are in On state.

l If there is no backup

power supplies, record

the event.

Fire

protection

Check the key

components such as

chassis, subrack,

and cabling trough.

l No fire risk exists and

all the fire protection

facilities are normal.

Guard against

theft

Check the doors,

windows, and

security mesh of theequipment room.

l All the doors,

windows, and security

meshes are normal.





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OSPF Router

ID

Run the display

current-

configuration

configuration ospf

ordisplay router

id command.

l The router ID should

be the address of the

Loopback interface.

l If no address is

assigned to the

Loopback interface,

you must specify the

router ID as the

address of an uplink

interface or the

interface with

minimum probability

of being Down.

l The configured router

ID must be the same as

the router ID used by

OSPF.

Importing

OSPF routes

Run the display

current-

configuration

configuration ospf

command.

l You are advertised to

run the network

command. You can

also configure the

device to import

routes.

OSPF virtuallink

Run the displayospf vlink

command.

l Using OSPF virtuallinks is prohibited.

OSPF stub

area

Run the display

current-

configuration

configuration ospf

command.

l The import-route

command cannot be

used in a stub area.

OSPF errored

packets

Run the display

ospf error

command. After

five minutes, run the

command again.

Then collect data

twice and compare

the data.

l In the normal

situation, the collected

data does not increase.

Importing IS-

IS routes

Run the display

current-

configuration

configuration isis

command.

l You are advertised to

run the network-

entity command. You

can also configure the

device to import

routes.



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ISIS system

ID

Run the display

current-

configuration

configuration isis

ordisplay current-

configuration |

include network-

entity command.

l The system ID is an

extension of the

address of the

Loopback interface.

l If the Loopback

interface is not

assigned an address,

set the system ID to

the address of the

uplink interface.

IS-IS address Run the display

current-

configurationconfiguration isis

command.

l Normally, up to three

areas can be

configured.

Advertising

BGP routes

Run the display

current-

configuration

configuration bgp

command.

l Do not advertise the IP

routes through the

import-route

command, except the

VPN routes.

l Run the networkand

ip route-staticip-

address { mask| mask-

length } null0commands to

aggregate routes

manually, and then

advertise the routes.

Static routes Run the display ip

routing-table

protocol static

command.

l Avoid redundant

static routes.

IBGP peers Run the display

current-

configuration

configuration bgp

command.

l To keep the protocol

stability, you are

advised to set up peer

relationship by using

Loopback interfaces,

which are always Up.

CCC

connections

Run the display vll

ccc command.

l The value of "state"

should be "up."





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SVC VLL Run the display

mpls static-l2vc

command.

l The value of "AC

Status" should be

"up."

l The value of "VC

State" should be "up."

VLL

connection in

Martini mode

Run the display

mpls l2vc

command.

l The value of "Session

State" of the LDP

session should be

"up."

l The value of "AC

Status" should be

"up."

l The value of "VC

State" should be "up."

VLL

connection in

Kompella

mode

Run the display

mpls l2vpn

connection

command.

l When all the L2VPN

connections in

Kompella mode are

checked, the value of

"connections" should

be "up."

l When the L2VPN

connection in

Kompella mode on thespecified interface is

checked, the value of

"local vc state" should

be "up" and the value

of "remote vc state"

should be "up."

VPLS

connections

Run the display

vpls connection

command.

l The value of

"VCState" should be

"up."

VPN routes Run the display ip

routing-table vpn-instance command.

l The routes destined

for the peer CE exist.

Routing

attribute sent

or received by

a VPN

instance

Run the display ip

vpn-instance

verbose command.

l The values of "Export

VPN Targets" and

"Import VPN Targets"

should be correct.



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BPDU tunnel

status

Run the display

bpdu-tunnel global

config command in

the system view to

check the global

BPDU

configuration.

Run the display stp

[ interface

interface-type

interface-number1

[ tointerface-

number2 ] [ brief ]

command to checkwhether the device

can send or receive

the STP BPDUs.

l The value of

"BridgeRole" of the

CE should be

"customer." The value

of "BridgeRole" of the

PE should be

"provider."

l If the value of "Status"

of an interface is

"Normal," it indicates

that no loop exists in

the VLAN where the

interface resides.

l If the value of "BPDU

Sent" is not 0, it

indicates that the

interface can send the

STP BPDUs.

l If the value of "BPDU

Received" is not 0, it

indicates that the

interface can receive

the STP BPDUs.

MSTP status Run the display stpbriefcommand.

l

The STP status of thespecified port and the

root port should be

"FORWARDING."

l The STP status of the

backup root port

should be

"DISCARDING."





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LDT loop

detection

Run the display

loop-detection

command.

Run the display

loop-detection

[ interface

{ interface-type

interface-number|

interface-name }]

command.

When the LDT functions

are configured normally,

l If no ports are

displayed in

"Following ports are

block for loop" and

"Following ports are

shutdown for loop," it

indicates that no loop

exists in the VLAN

where loop detection

is enabled.

l If the value of "Status"

is "Normal," it

indicates that no loop

exists in the VLAN

where the interface

resides.

Smart Link

status

Run the display

smart-link group

command.

l The value of

"Member" of the

Smart Link group is

correct.

l The master interface

should be in ACTIVEstate.

l The slave interface

should be in

INACTIVE state.

RRPP status Run the display

rrpp verbose

domain command

on the active node.

l The value of "Ring

State" should be

"Complete."

l The value of "Port

status" of the primary

port should be "

Routine Maintenance(V100R003C00 02)

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