H3C S5510 Series Operating instructions

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Table of Contents

Table of Contents

Chapter 1 Basic Configurations...................................................................................................1-1

1.1 Basic Configurations..........................................................................................................1-1

1.1.1 Entering/Exiting System View.................................................................................1-1

1.1.2 Configuring the Device Name.................................................................................1-2

1.1.3 Configuring the System Clock.................................................................................1-2

1.1.4 Configuring a Banner ..............................................................................................1-5

1.1.5 Configuring CLI Hotkeys.........................................................................................1-7

1.1.6 Configuring User Levels and Command Levels......................................................1-8

1.1.7 Displaying and Maintaining Basic Configurations.................................................1-10

1.2 CLI Features....................................................................................................................1-11

1.2.1 Introduction to CLI.................................................................................................1-11

1.2.2 Online Help with Command Lines.........................................................................1-12

1.2.3 Display Features ...................................................................................................1-13

1.2.4 History Command .................................................................................................1-13

1.2.5 Command Line Error Information..........................................................................1-14

1.2.6 Edit Features.........................................................................................................1-15

Chapter 2 System Maintaining and Debugging..........................................................................2-1

2.1 System Maintaining and Debugging Overview..................................................................2-1

2.1.1 Introduction to System Maintaining and Debugging ...............................................2-1

2.1.2 Introduction to System Debugging..........................................................................2-2

2.2 System Maintaining and Debugging..................................................................................2-3

2.2.1 System Maintaining.................................................................................................2-3

2.2.2 System Debugging..................................................................................................2-4

2.3 System Maintaining Example ............................................................................................2-5

Chapter 3 Device Management.................................................................................................... 3-1

3.1 Device Management Overview..........................................................................................3-1

3.2 Configuring Device Management......................................................................................3-1

3.2.1 Rebooting a Device.................................................................................................3-1

3.2.2 Specifying a Boot ROM File for the Next Device Boot............................................ 3-2

3.2.3 Upgrading Boot ROM..............................................................................................3-3

3.2.4 Configuring a Detection Interval..............................................................................3-3

3.2.5 Clearing the 16-bit Interface Indexes Not Used in the Current System..................3-4

3.2.6 Identifying and Diagnosing Pluggable Transceivers...............................................3-5

3.3 Displaying and Maintaining Device Management Configuration.......................................3-7

3.4 Device Management Configuration Example.................................................................... 3-7

3.4.1 Remote Upgrade Configuration Example............................................................... 3-7

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 1 Basic Configurations

1-1

Chapter 1 Basic Configurations

While performing basic configurations of the system, go to these sections for

information you are interested in:

z Basic Configurations

z CLI Features

1.1 Basic Configurations

This section covers the following topics:

z Entering/Exiting System View

z Configuring the Device Name

z Configuring the System Clock

z Configuring a Banner

z Configuring CLI Hotkeys

z Configuring User Levels and Command Levels

z Displaying and Maintaining Basic Configurations

1.1.1 Entering/Exiting System View

Follow these steps to enter/exit system view:

To do… Use the command… Remarks

Enter system view from user view

system-view

—

Return to user view from system view

quit

—

 Note:

With the quit command, you can return to the previous view. You can execute the

return command or press the hot key <Ctrl+Z> to return to user view.

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 1 Basic Configurations

1-2

1.1.2 Configuring the Device Name

To do… Use the command… Remarks

Enter system view system-view —

Configure the device

name

sysname sysname

Optional

The device name is H3C by default.

1.1.3 Configuring the System Clock

I. Configuring the system clock

Follow these steps to configure the system clock:

To do… Use the command… Remarks

Set time and date

clock datetime time date

Set the time zone

clock timezone zone-name { add | minus }

zone-offset

clock summer-time zone-name one-off

start-time start-date end-time end-date

add-time

Set a summer

time scheme

clock summer-time zone-name repeating

start-time start-date end-time end-date

add-time

Optional

Available in

user view.

II. Displaying the system clock

The system clock is displayed by system time stamp, which is the same as that

displayed by the display clock command. The system clock is decided by the

commands clock datetime, clock timezone and clock summer-time. If these three

commands are not configured, the display clock command displays the original

system clock. If you combine these three commands in different ways, the system clock

is displayed in the ways shown in

Table 1-1. The meanings of the parameters in the

configuration column are as follows:

z 1 indicates date-time has been configured with the clock datetime.

z 2 indicates time-zone has been configured with the clock timezone command

and the offset time is zone-offset.

z 3 indicates summer time has been configured with the clock summer-time

command and the offset time is summer-offset.

z [1] indicates the clock datetime command is an optional configuration.

z The default system clock is 2005/1/1 1:00:00 in the example.

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 1 Basic Configurations

1-3

Table 1-1 Relationship between the configuration and display of the system clock

Configuration

System clock displayed by the

display clock command

Example

date-time

Configure: clock datetime

1:00 2007/1/1

Display: 01:00:00 UTC Mon

01/01/2007

The original system clock ±

zone-offset

Configure: clock timezone

zone-time add 1

Display: 02:00:00 zone-time

Sat 01/01/2005

1 and 2

date-time ± zone-offset

Configure: clock datetime

2:00 2007/2/2 and clock

timezone zone-time add 1

Display: 03:00:00 zone-time

Fri 02/02/2007

[1], 2 and 1

date-time

Configure: clock timezone

zone-time add 1 and clock

datetime 3:00 2007/3/3

Display: 03:00:00 zone-time

Sat 03/03/2007

If the original system clock is not

in the summer time range, the

original system clock is displayed.

Configure: clock

summer-time ss one-off

1:00 2006/1/1 1:00 2006/8/8

Display: 01:00:00 UTC Sat

01/01/2005

If the original system clock is in

the summer time range, the

original system clock +

summer-offset is displayed.

Configure: clock

summer-time ss one-off

00:30 2005/1/1 1:00

2005/8/8 2

Display: 03:00:00 ss Sat

01/01/2005

If date-time is not in the summer

time range, date-time is

displayed.

Configure: clock datetime

1:00 2007/1/1 and clock

summer-time ss one-off

1:00 2006/1/1 1:00 2006/8/8

Display: 01:00:00 UTC Mon

01/01/2007

1 and 3

If date-time is in the summer time

range, “date-time” +

“summer-offset” is displayed.

Configure: clock datetime

8:00 2007/1/1 and clock

summer-time ss one-off

1:00 2007/1/1 1:00 2007/8/8

Display: 10:00:00 ss Mon

01/01/2007

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 1 Basic Configurations

1-4

Configuration

System clock displayed by the

display clock command

Example

If date-time is not in the summer

time range, date-time is

displayed.

Configure: clock

summer-time ss one-off

1:00 2007/1/1 1:00 2007/8/8

2 and clock datetime 1:00

2008/1/1

Display: 01:00:00 UTC Tue

01/01/2008

Configure: clock

summer-time ss one-off

1:00 2007/1/1 1:00 2007/8/8

2 and clock datetime 1:30

2007/1/1

Display: 23:30:00 UTC Sun

12/31/2006

[1], 3 and 1

date-time is in the summer time

range:

If the value of “date-time” -

“summer-offset” is not in the

summer-time range, “date-time” -

“summer-offset” is displayed;

If the value of “date-time” -

“summer-offset” is in the

summer-time range, date-time is

displayed.

Configure: clock

summer-time ss one-off

1:00 2007/1/1 1:00 2007/8/8

2 and clock datetime 3:00

2007/1/1

Display: 03:00:00 ss Mon

01/01/2007

Configure: clock timezone

zone-time add 1 and clock

summer-time ss one-off

1:00 2007/1/1 1:00 2007/8/8

Display: 02:00:00 zone-time

Sat 01/01/2005

If the value of the original system

clock ± “zone-offset” is not in the

summer-time range, the original

system clock ± “zone-offset” is

displayed.

Configure: clock timezone

zone-time add 1 and clock

summer-time ss one-off

1:00 2005/1/1 1:00 2005/8/8

Display: 04:00:00 ss Sat

01/01/2005

2 and 3 or 3

and 2

If the value of the original system

clock ± “zone-offset” is in the

summer-time range, the original

system clock ± “zone-offset”

+ ”summer-offset” is displayed.

Configure: clock datetime

1:00 2007/1/1, clock

timezone zone-time add 1

and clock summer-time ss

one-off 1:00 2008/1/1 1:00

2008/8/8 2

Display: 02:00:00 zone-time

Mon 01/01/2007

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 1 Basic Configurations

1-5

Configuration

System clock displayed by the

display clock command

Example

If the value of

"date-time"±"zone-offset" is not in

the summer-time range,

"date-time"±"zone-offset" is

displayed.

Configure: clock datetime

1:00 2007/1/1, clock

timezone zone-time add 1

and clock summer-time ss

one-off 1:00 2007/1/1 1:00

2007/8/8 2

Display: 04:00:00 ss Mon

01/01/2007

1, 2 and 3 or 1,

3 and 2

If the value of

"date-time"±"zone-offset" is in the

summer-time range,

"date-time"±"zone-offset"+”summ

er-offset” is displayed.

Configure: clock timezone

zone-time add 1, clock

summer-time ss one-off

1:00 2008/1/1 1:00 2008/8/8

2 and clock datetime 1:00

2007/1/1

Display: 01:00:00 zone-time

Mon 01/01/2007

If date-time is not in the summer

time range, date-time is

displayed.

Configure: clock timezone

zone-time add 1, clock

summer-time ss one-off

1:00 2008/1/1 1:00 2008/8/8

2 and clock datetime 1:30

2008/1/1

Display: 23:30:00 zone-time

Mon 12/31/2007

[1], 2, 3 and 1 or

[1], 3, 2 and 1

date-time is in the summer time

range:

If the value of

“date-time”-“summer-offset” is not

in the summer-time range,

“date-time”-“summer-offset” is

displayed;

If the value of

“date-time”-“summer-offset” is in

the summer-time range,

date-time is displayed.

Configure: clock timezone

zone-time add 1, clock

summer-time ss one-off

1:00 2008/1/1 1:00 2008/8/8

2 and clock datetime 3:00

2008/1/1

Display: 03:00:00 ss Tue

01/01/2008

1.1.4 Configuring a Banner

I. Introduction to banners

Banners are prompt information displayed by the system when users are connected to

the device, perform login authentication, and start interactive configuration. The

administrator can set corresponding banners as needed.

At present, the system supports the following five kinds of welcome information.

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 1 Basic Configurations

1-6

z shell banner, also called session banner, displayed when a non Modem user

enters user view.

z incoming banner, also called user interface banner, displayed when a user

interface is activated by a Modem user.

z login banner, welcome information at login authentications, displayed when

password and scheme authentications are configured.

z motd banner, welcome information displayed before authentication.

z legal banner, also called authorization information. The system displays some

user logs in, waiting for the user to confirm whether to continue the authentication

or login. If entering Y or pressing the Enter key, the user enters the authentication

or login process; if entering N, the user quits the authentication or login process. Y

and N are case insensitive.

II. Configuring a banner

When you configure a banner, the system supports two input modes. One is to input all

the banner information right after the command keywords. The start and end characters

of the input text must be the same but are not part of the banner information. In this

case, the input text, together with the command keywords, cannot exceed 510

characters. The other is to input all the banner information in multiple lines by pressing

the Enter key. In this case, up to 2000 characters can be input.

The latter input mode can be achieved in the following three ways:

z Press the Enter key directly after the command keywords, and end the setting with

the % character. The Enter and % characters are not part of the banner

information.

z Input a character after the command keywords at the first line, and then press the

Enter key. End the setting with the character input at the first line. The character at

the first line and the end character are not part of the banner information.

z Input multiple characters after the command keywords at the first line (with the first

and last characters being different), then press the Enter key. End the setting with

the first character at the first line. The first character at the first line and the end

character are not part of the banner information.

Follow these steps to configure a banner:

To do… Use the command… Remarks

Enter system view

system-view

—

Configure the banner to be

displayed at login

header incoming text

Optional

Configure the banner to be

displayed at login authentication

header login text

Optional

Configure the authorization

information before login

header legal text

Optional

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 1 Basic Configurations

1-7

To do… Use the command… Remarks

Configure the banner to be

displayed when a user enters user

view

header shell text

Optional

Configure the banner to be

displayed before login

header motd text

Optional

1.1.5 Configuring CLI Hotkeys

Follow these steps to configure CLI hotkeys:

To do… Use the command… Remarks

Enter system view

system-view

—

Configure CLI hotkeys

hotkey { CTRL_G |

CTRL_L | CTRL_O |

CTRL_T | CTRL_U }

command

Optional

The <Ctrl+G>, <Ctrl+L>

and <Ctrl+O> hotkeys are

specified with command

lines by default.

Display hotkeys

display hotkey

Available in any view.

Refer to

Table 1-2 for

hotkeys reserved by the

system.

 Note:

By default, the <Ctrl+G>, <Ctrl+L> and <Ctrl+O> hotkeys are configured with command

line and the <Ctrl+T> and <Ctrl+U> commands are NULL.

z <Ctrl+G> corresponds to the display current-configuration command.

z <Ctrl+L> corresponds to the display ip routing-table command.

z <Ctrl+O> corresponds to the undo debugging all command.

Table 1-2 Hotkeys reserved by the system

Hotkey Function

<Ctrl+A> Moves the cursor to the beginning of the current line.

<Ctrl+B> Moves the cursor one character to the left.

<Ctrl+C> Stops performing a command.

<Ctrl+D> Deletes the character at the current cursor position.

<Ctrl+E> Moves the cursor to the end of the current line.

<Ctrl+F> Moves the cursor one character to the right.

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 1 Basic Configurations

1-8

Hotkey Function

<Ctrl+H> Deletes the character to the left of the cursor.

<Ctrl+K> Terminates an outgoing connection.

<Ctrl+N> Displays the next command in the history command buffer.

<Ctrl+P> Displays the previous command in the history command buffer.

<Ctrl+R> Redisplays the current line information.

<Ctrl+V> Pastes the content in the clipboard.

<Ctrl+W>

Deletes all the characters in a continuous string to the left of the

cursor.

<Ctrl+X> Deletes all the characters to the left of the cursor.

<Ctrl+Y> Deletes all the characters to the right of the cursor.

<Ctrl+Z> Exits to user view.

<Ctrl+]> Terminates an incoming connection or a redirect connection.

<Esc+B>

Moves the cursor to the leading character of the continuous string to

the left.

<Esc+D>

Deletes all the characters of the continuous string at the current

cursor position and to the right of the cursor.

<Esc+F>

Moves the cursor to the front of the next continuous string to the

right.

<Esc+N>

Moves the cursor down by one line (available before you press the

Enter key)

<Esc+P>

Moves the cursor up by one line (available before you press the

Enter key)

<Esc+<> Specifies the cursor as the beginning of the clipboard.

<Esc+>> Specifies the cursor as the ending of the clipboard.

 Note:

These hotkeys are defined by the device. When you interact with the device from

terminal software, these keys may be defined to perform other operations. If so, the

definition of the terminal software will dominate.

1.1.6 Configuring User Levels and Command Levels

All the commands are defaulted to different views and categorized into four levels: visit,

monitor, system, and manage, identified respectively by 0 through 3. If you want to

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 1 Basic Configurations

1-9

acquire a higher privilege, you must switch to a higher user level, and it requires

password to do so for AUX and VTY user interfaces for the security’s sake.

The following table describes the default level of the commands.

Table 1-3 Default command levels

Level Privilege Command

0 Visit ping, tracert, telnet

1 Monitor refresh, reset, send

2 System

All configuration commands except for those at

manage level

3 Manage

FTP, TFTP, XMODEM, and file system

operation commands

Follow these steps to configure user level and command level:

To do… Use the command… Remarks

Switch the user level super [ level ]

Optional

Available in user view.

Enter system view system-view —

Configure the password

for switching the user

level

super password [ level

user-level ] { simple |

cipher } password

Optional

By default, no password is

configured.

Configure the command

level in system view

command-privilege

level level view view

command

Optional

 Note:

The commands available depend on your user level when you log onto a device. For

example, if your user level is 3 and the command level of VTY 0 interface is 1, you can

use commands below level 3 (inclusive).

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 1 Basic Configurations

1-10

Caution:

z When you configure the password for switching user level with the super password

command, the user level is defaulted to 3 if no user level is specified.

z You can switch to a lower user level unconditionally. To switch to a higher user level,

however, you need to enter the password needed (The password can be set with

the super password command.). If the entered password is incorrect or no

password is configured, the switch fails. Therefore, before switching to a higher user

level, you should configure the password needed.

z You are recommended to use the default user level; otherwise the change of user

level may bring inconvenience to your maintenance and operation.

1.1.7 Displaying and Maintaining Basic Configurations

To do… Use the command… Remarks

Display information on

system version

display version

Display information on the

system clock

display clock

Display information on

terminal users

display users [ all ]

—

Display the configurations

saved in the storage

device

display saved-configuration

[ by-linenum ]

Display the current

validated configurations

display current-configuration

[ [ configuration [ configuration ] |

controller | interface [ interface-type ]

[ interface-number ] ] [ by-linenum ] [ |

{ begin | include | exclude } text ] ]

—

Display the valid

configuration under

current view

display this [ by-linenum ]

Display clipboard

information

display clipboard

—

Display and save

statistics of each module’s

running status

display diagnostic-information

—

During daily maintenance or when the system is operating abnormally, you need to

view each module’s running status to find the problem. Therefore, you are required to

execute the corresponding display commands one by one. To collect more information

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 1 Basic Configurations

1-11

one time, you can execute the display diagnostic-information command in any view

to display statistics of each module’s running status. The execution of the display

diagnostic-information command has the same effect as that of the commands

display clock, display version, display device, and display current-configuration.

 Note:

z For the detailed description of the display users command, refer to the Login

Commands part of the manual.

z The display commands discussed above are for the global configuration. Refer to

the corresponding section for the display command for specific protocol and

interface.

1.2 CLI Features

This section covers the following topics:

z Introduction to CLI

z Online Help with Command Lines

z Display Features

z History Command

z Command Line Error Information

z Edit Features

1.2.1 Introduction to CLI

CLI is an interaction interface between devices and users. Through CLI, you can

configure your devices by entering commands and view the output information and

verify your configurations, thus facilitating your configuration and management of your

devices.

CLI provides the following features for you to configure and manage your devices:

z Hierarchical command protection where you can only execute the commands at

your own or lower levels. Refer to

Configuring User Levels and Command Levels

for details.

z Easy access to on-line help by entering “?”

z Abundant debugging information for fault diagnosis.

z Saving and executing commands that have be executed.

z Fuzzy match for convenience of input. You only need to input the characters that

can uniquely identify a keyword to recognize and execute the keyword. For

example, for the keyword Ethernet, you only need to input eth when you execute

a command with this keyword.

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 1 Basic Configurations

1-12

1.2.2 Online Help with Command Lines

The following are the types of online help available with the CLI:

z Full help

z Fuzzy help

To obtain the desired help information, you can:

1) Enter <?> in any view to access all the commands in this view and brief description

about them as well.

<Sysname> ?

User view commands:

backup Backup next startup-configuration file to TFTP server

boot-loader Set boot loader

bootrom Update/read/backup/restore bootrom

cd Change current directory

clock Specify the system clock

cluster Run cluster command

copy Copy from one file to another

debugging Enable system debugging functions

delete Delete a file

dir List files on a file system

display Display current system information

......omitted......

2) Enter a command and a <?> separated by a space. If <?> is at the position of a

keyword, all the keywords are given with a brief description.

<Sysname> terminal ?

debugging Send debug information to terminal

logging Send log information to terminal

monitor Send information output to current terminal

trapping Send trap information to terminal

3) Enter a command and a <?> separated by a space. If <?> is at the position of a

parameter, the description about this parameter is given.

<Sysname> system-view

[Sysname] interface vlan-interface

<1-4094> VLAN interface number

[Sysname] interface vlan-interface 1 ?

<cr>

[Sysname] interface vlan-interface 1

Where, <cr> indicates that there is no parameter at this position. The command is then

repeated in the next command line and executed if you press <Enter>.

4) Enter a character string followed by a <?>. All the commands starting with this

string are displayed.

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 1 Basic Configurations

1-13

<Sysname> c?

clock

copy

5) Enter a command followed by a character string and a <?>. All the keywords

starting with this string are listed.

<Sysname> display ver?

version

6) Press <Tab> after entering the first several letters of a keyword to display the

complete keyword, provided these letters can uniquely identify the keyword in this

command.

1.2.3 Display Features

CLI offers the following feature:

When the information displayed exceeds one screen, you can pause using one of the

methods shown in

Table 1-4.

Table 1-4 Display functions

Action Function

Press <Space> when

information display pauses

Continues to display information of the next

screen page.

Press <Enter> when information

display pauses

Continues to display information of the next line.

Enter <Ctrl+C> when information

display pauses

Stops the display and the command execution.

<Ctrl+E> Moves the cursor to the end of the current line.

1.2.4 History Command

The CLI can automatically save the commands that have been used. You can invoke

and repeatedly execute them as needed. By default, the CLI can save up to ten

commands for each user. You can use the history-command max-size command to

set the capacity of the history commands log buffer for the current user interface (For

the detailed description of the history-command max-size command, refer to the

can perform.

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 1 Basic Configurations

1-14

Follow these steps to access history commands:

To do… Use the key/command… Result

View the history

commands

display

history-command

Displays the commands

that you have entered

Access the previous

history command

Up-arrow key or <Ctrl+P>

Displays the earlier

history command, if there

is any.

Access the next history

command

Down-arrow key or

<Ctrl+N>

Displays the next history

command, if there is any.

 Note:

You may use arrow keys to access history commands in Windows 200X and XP

Terminal or Telnet. However, the up-arrow and down-arrow keys are invalid in

Windows 9X HyperTerminal, because they are defined in a different way. You can use

<Ctrl+P> and <Ctrl+N> instead.

1.2.5 Command Line Error Information

The commands are executed only if they have no syntax error. Otherwise, error

information is reported.

Table 1-5 lists some common errors.

Table 1-5 Common command line errors

Error information Cause

The command was not found.

The keyword was not found.

Parameter type error

% Unrecognized command found at '^'

position.

The parameter value is beyond the

allowed range.

% Incomplete command found at '^'

position.

Incomplete command

% Ambiguous command found at '^'

position.

Ambiguous command,

Too many parameters Too many parameters

% Wrong parameter found at '^' position. Wrong parameter

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 1 Basic Configurations

1-15

1.2.6 Edit Features

The CLI provides the basic command edit functions and supports multi-line editing. The

maximum length of each command is 256 characters.

Table 1-6 lists these functions.

Table 1-6 Edit functions

Key Function

Common keys

If the editing buffer is not full, insert the character at

the position of the cursor and move the cursor to

the right.

<Backspace> key

Deletes the character to the left of the cursor and

move the cursor back one character.

Left-arrow key or <Ctrl+B> The cursor moves one character space to the left.

Right-arrow key or <Ctrl+F> The cursor moves one character space to the right.

Up-arrow key or <Ctrl+P>

Down-arrow key or <Ctrl+N>

Displays history commands

<Tab> key

Pressing <Tab> after entering part of a keyword

enables the fuzzy help function. If finding a unique

match, the system substitutes the complete

keyword for the incomplete one and displays it in

the next line. If there are several matches or no

match at all, the system does not modify the

incomplete keyword and displays it again in the

next line.

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 2 System Maintaining and Debugging

2-1

Chapter 2 System Maintaining and Debugging

When maintaining and debugging the system, go to these sections for information you

are interested in:

z System Maintaining and Debugging Overview

z System Maintaining and Debugging

z System Maintaining Example

2.1 System Maintaining and Debugging Overview

2.1.1 Introduction to System Maintaining and Debugging

You can use the ping command and the tracert command to verify the current network

connectivity.

I. The ping command

You can use the ping command to verify whether a device with a specified address is

reachable, and to examine network connectivity.

The ping command involves the following steps in its execution:

1) The source device sends an ICMP echo request to the destination device.

2) If the network is functioning properly, the destination device responds by sending

an ICMP echo reply to the source device after receiving the ICMP echo request.

3) If there is network failure, the source device displays timeout or destination

unreachable.

4) Display related statistics.

Output of the ping command includes:

z Information on the destination’s responses towards each ICMP echo request, if

the source device has received the ICMP echo reply within the timeout time, it

displays the number of bytes of the echo reply, the message sequence number,

Time to Live (TTL), and the response time.

z If within the period set by the timeout timer, the destination device has not received

the ICMP response, it displays the prompt information.

z The ping command can apply to the destination’s name or IP address. If the

destination’s name is unknown, the prompt information is displayed.

z The statistics during the ping operation, which include number of packets sent,

number of echo reply messages received, percentage of messages not received,

the minimum, average, and maximum response time.

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 2 System Maintaining and Debugging

2-2

II. The tracert command

By using the tracert command, you can trace the routers involved in delivering a packet

from source to destination. This is useful for identification of failed node(s) in the event

of network failure.

The tracert command involves the following steps in its execution:

1) The source device sends a packet with a TTL value of 1 to the destination device.

2) The first hop (the router that first receives the packet) responds by sending a

TTL-expired ICMP message to the source, with its IP address encapsulated. In

this way, the source device can get the address of the first router.

3) The source device sends a packet with a TTL value of 2 to the destination device.

4) The second hop responds with a TTL-expired ICMP message, which gives the

source device the address of the second router.

5) The above process continues until the ultimate destination device is reached. In

this way, the source device can trace the addresses of all the routers that have

been used to get to the destination device.

2.1.2 Introduction to System Debugging

The device provides various debugging functions. For the majority of protocols and

features supported, the system provides corresponding debugging information to help

users diagnose errors.

The following two switches control the display of debugging information:

z Protocol debugging switch, which controls protocol-specific debugging information

z Screen output switch, which controls whether to display the debugging information

on a certain screen.

Figure 2-1 illustrates the relationship between the protocol debugging switch and the

screen output switch. Assume that the device can output debugging information to

module 1, 2 and 3. Only when both are turned on can debugging information be output

on a terminal.

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 2 System Maintaining and Debugging

2-3

OFF

Debugging

information

Protocol

debugging

switch

Screen

output

switch

1 2 3

OFF

1 2 3

Debugging

information

Screen

output

switch

Protocol

debugging

switch

Figure 2-1 The relationship between the protocol and screen debugging switch

 Note:

Displaying debugging information on the terminal is the most commonly used way to

output debugging information. You can also output debugging information to other

directions. For details, refer to Information Center Configuration.

2.2 System Maintaining and Debugging

2.2.1 System Maintaining

To do… Use the command… Remarks

ping [ ip ] [ -a source-ip | -c count |

-f | -h ttl | -i interface-type

interface-number | -m interval | -n

| -p pad | -q | -r | -s packet-size | -t

timeout | -tos tos | -v |

-vpn-instance

vpn-instance-name ] *

remote-system

Optional

Used in IPv4 network

Available in any view

Check whether a

specified IP

address can be

reached

ping ipv6 [ -a source-ipv6 | -c

count | -m interval | -s packet-size

| -t timeout ] * remote-system [ -i

interface-type interface-number ]

Optional

Used in IPv6 network

Available in any view

Operation Manual – System Maintaining and Debugging

H3C S3610&S5510 Series Ethernet Switches Chapter 2 System Maintaining and Debugging

2-4

To do… Use the command… Remarks

tracert [ -a source-ip | -f first-ttl |

-m max-ttl | -p port | -q

packet-number | -vpn-instance

vpn-instance-name | -w timeout ] *

remote-system

Optional

Used in IPv4 network

Available in any view

View the routes

from the source to

the destination

tracert ipv6 [ -f first-ttl | -m max-ttl

| -p port | -q packet-number | -w

timeout ] * remote-system

Optional

Used in IPv6 network

Available in any view

 Note:

z For a low-speed network, you are recommended to set a larger value for the timeout

timer (indicated by the -t parameter in the command) when configuring the ping

command.

z Only the directly connected segment address can be pinged if the outgoing interface

is specified with the -i argument.

2.2.2 System Debugging

To do… Use the command… Remarks

Enable the terminal

monitoring of system

information

terminal monitor

Optional

The terminal monitoring

on the console is enabled

by default and that on the

monitoring terminal is

disabled by default.

Enable the terminal

display of debugging

information

terminal debugging

Required

Disabled by default

Available in user view

Enable debugging for a

specified module

debugging { all [ timeout

time ] | module-name

[ option ] }

Required

Disabled by default

Available in user view

Display the enabled

debugging functions

display debugging

[ interface interface-type

interface-number ]

[ module-name ]

Optional

Available in any view

Page is loading ...

H3C S5510 Series, S3610 Series Operating instructions

Related papers

Other documents