Contents

Managing the device· 1

Configuring the device name· 1

Configuring the system time· 1

Enabling displaying the copyright statement 2

Configuring banners· 3

Banner types· 3

Banner input methods· 3

Configuration procedure· 4

Rebooting the device· 4

Rebooting devices immediately from the CLI 5

Scheduling a device reboot 5

Scheduling a task· 5

Configuration guidelines· 5

Configuration procedure· 6

Schedule configuration example· 7

Disabling password recovery capability· 10

Specifying the preferred airflow direction· 10

Setting the port status detection timer 11

Monitoring CPU usage· 11

Setting memory alarm thresholds· 11

Configuring the temperature alarm thresholds· 13

Configuring device poweroff alarming· 14

Setting serial numbers for hot-swappable fans· 14

Configuration restrictions and guidelines· 15

Configuration procedure· 15

Disabling USB interfaces· 15

Verifying and diagnosing transceiver modules· 15

Verifying transceiver modules· 15

Diagnosing transceiver modules· 16

Restoring the factory-default configuration· 16

Displaying and maintaining device management configuration· 17

Managing the device

This chapter describes how to configure basic device parameters and manage the device.

You can perform the configuration tasks in this chapter in any order.

Configuring the device name

A device name (also called hostname) identifies a device in a network and is used in CLI view prompts. For example, if the device name is Sysname, the user view prompt is <Sysname>.

To configure the device name:

 

Step	Command	Remarks
1.       Enter system view.	system-view	N/A
2.       Configure the device name.	sysname sysname	The default device name is H3C.

 

Configuring the system time

Correct system time is essential to network management and communication. Configure the system time correctly before you run the device on the network.

The device can use the locally set system time, or obtain the UTC time from an NTP source and calculate the system time.

·          When using the locally set system time, the device uses the clock signals generated by its built-in crystal oscillator to maintain the system time.

A device power cycling operation restores the locally set system time to the default. After the device is power cycled, you must set the system time again.

·          After obtaining the UTC time from an NTP source, the device uses the UTC time, time zone, and daylight saving time to calculate the system time. Then, the device periodically synchronizes its UTC time and recalculates the system time. For more information about NTP configuration, see Network Management and Monitoring Configuration Guide.

The system time calculated by using the UTC time from an NTP time source is more precise.

To configure the device to use the local system time:

 

Step	Command	Remarks
1.       Enter system view.	system-view	N/A
2.       Specify the system time source.	clock protocol none	By default, the device uses the NTP time source.
3.       Return to user view.	quit	N/A
4.       Set the local system time.	clock datetime time date	N/A
5.       Enter system view.	system-view	N/A
6.       Set the time zone.	clock timezone zone-name { add | minus } zone-offset	By default, the system uses the UTC time zone. After a time zone change, the device recalculates the system time. To view the system time, use the display clock command. This setting must be consistent with the time zone of the place where the device resides.
7.       (Optional.) Set the daylight saving time.	clock summer-time name start-time start-date end-time end-date add-time	By default, the daylight saving time is not set. After you set the daylight saving time, the device recalculates the system time. To view the system time, use the display clock command. The settings must be consistent with the daylight saving time parameters of the place where the device resides.

 

To configure the device to obtain the UTC time from a time source and calculate the system time:

 

Step	Command	Remarks
1.       Enter system view.	system-view	N/A
2.       Specify the system time source.	clock protocol ntp	By default, the device uses the NTP time source. If you execute this command multiple times, the most recent configuration takes effect.
3.       Set the time zone.	clock timezone zone-name { add | minus } zone-offset	By default, the system uses the UTC time zone. After you set the time zone, the device recalculates the system time. To view the system time, use the display clock command. This setting must be consistent with the time zone of the place where the device resides.
4.       (Optional.) Set the daylight saving time.	clock summer-time name start-time start-date end-time end-date add-time	By default, the daylight saving time is not set. After you set the daylight saving time, the device recalculates the system time. To view the system time, use the display clock command. The settings must be consistent with the daylight saving time parameters of the place where the device resides.

 

Enabling displaying the copyright statement

This feature enables the device to display the copyright statement in the following situations:

·          When a Telnet or SSH user logs in.

·          When a console or modem dial-in user quits user view. This is because the device automatically tries to restart the user session.

The following is a sample copyright statement:

******************************************************************************

* Copyright (c) 2004-2016 Hangzhou H3C Tech. Co., Ltd. All rights reserved.  *

* Without the owner's prior written consent,                                 *

* no decompiling or reverse-engineering shall be allowed.                    *

******************************************************************************

To enable displaying the copyright statement:

 

Step	Command	Remarks
1.       Enter system view.	system-view	N/A
2.       Enable displaying the copyright statement.	copyright-info enable	By default, this function is enabled.

 

Configuring banners

Banners are messages that the system displays when a user logs in.

Banner types

The system supports the following banners:

·          Legal banner—Appears after the copyright statement. To continue login, the user must enter Y or press Enter. To quit the process, the user must enter N. Y and N are case insensitive.

·          Message of the Day (MOTD) banner—Appears after the legal banner and before the login banner.

·          Login banner—Appears only when password or scheme authentication is configured.

·          Incoming banner—Appears for modem users.

·          Shell banner—Appears for non-modem users.

The system displays the banners in the following order: legal banner, MOTD banner, login banner, and incoming or shell banner.

Banner input methods

You can configure a banner by using one of the following methods:

·          Input the entire command line in a single line.

The entire command line, including the command keywords, the banner, and the delimiters, can have a maximum of 511 characters. The delimiters for the banner can be any printable character but must be the same. You cannot press Enter before you input the end delimiter.

For example, you can configure the shell banner "Have a nice day." as follows:

<System> system-view

[System] header shell %Have a nice day.%

·          Input the command line in multiple lines.

The banner can contain carriage returns. A carriage return is counted as two characters.

To input a banner configuration command line in multiple lines, use one of the following methods:

¡  Press Enter after the final command keyword, type the banner, and end the final line with the delimiter character %. The banner plus the delimiter can have a maximum of 1999 characters.

For example, you can configure the banner "Have a nice day." as follows:

<System> system-view

[System] header shell

Please input banner content, and quit with the character '%'.

Have a nice day.%

¡  After you type the final command keyword, type any printable character as the start delimiter for the banner and press Enter. Then, type the banner and end the final line with the same delimiter. The banner plus the end delimiter can have a maximum of 1999 characters.

For example, you can configure the banner "Have a nice day." as follows:

<System> system-view

[System] header shell A

Please input banner content, and quit with the character 'A'.

Have a nice day.A

¡  After you type the final command keyword, type the start delimiter and part of the banner. Make sure the final character of the final string is different from the start delimiter. Then, press Enter, type the rest of the banner, and end the final line with the same delimiter. The banner plus the start and end delimiters can have a maximum of 2002 characters.

For example, you can configure the banner "Have a nice day." as follows:

<System> system-view

[System] header shell AHave a nice day.

Please input banner content, and quit with the character 'A'.

A

Configuration procedure

To configure banners:

 

Step	Command	Remarks
1.       Enter system view.	system-view	N/A
2.       Configure the legal banner.	header legal text	By default, no legal banner is configured.
3.       Configure the MOTD banner.	header motd text	By default, no MOTD banner is configured.
4.       Configure the login banner.	header login text	By default, no login banner is configured.
5.       Configure the incoming banner.	header incoming text	By default, no incoming banner is configured.
6.       Configure the shell banner.	header shell text	By default, no shell banner is configured.

 

Rebooting the device

CAUTION: ·      A device reboot might interrupt network services. ·      To avoid configuration loss, use the save command to save the running configuration before a reboot. For more information about the save command, see Fundamentals Command Reference. ·      Before a reboot, use the display startup and display boot-loader commands to verify that the startup configuration file and startup software images are correctly specified. If a startup configuration file or software image problem exists, the device cannot start up correctly. For more information about the two display commands, see Fundamentals Command Reference.

 

The following device reboot methods are available:

·          Schedule a reboot at the CLI, so the device automatically reboots at the specified time or after the specified period of time.

·          Immediately reboot the device at the CLI.

·          Power off and then power on the device. This method might cause data loss, and is the least-preferred method.

Using the CLI, you can reboot the device from a remote host.

For data security, the device does not reboot while it is performing file operations.

Rebooting devices immediately from the CLI

Perform this task in user view.

 

Task	Command
Reboot the device.	reboot [ slot slot-number [ subslot subslot-number ] ] [ force ]

 

Scheduling a device reboot

The device supports only one device reboot schedule. If you execute the scheduler reboot at or scheduler reboot delay command multiple times or execute both commands, the most recent configuration takes effect.

The automatic reboot configuration takes effect on all member devices. It will be canceled if a master/subordinate switchover occurs.

To schedule a reboot, execute one of the following commands in user view:

 

Task	Command	Remarks
Specify the reboot date and time.	scheduler reboot at time [ date ]	By default, no reboot date or time is specified.
Specify the reboot delay time.	scheduler reboot delay time	By default, no reboot delay time is specified.

 

Scheduling a task

You can schedule the device to automatically execute a command or a set of commands without administrative interference.

You can configure a periodic schedule or a non-periodic schedule. A non-periodic schedule is not saved to the configuration file and is lost when the device reboots. A periodic schedule is saved to the startup configuration file and is automatically executed periodically.

Configuration guidelines

Follow these guidelines when you schedule a task:

·          The default system time is always restored at reboot. To make sure a task schedule can be executed as expected, reconfigure the system time or configure NTP after you reboot the device. For more information about NTP, see Network Management and Monitoring Configuration Guide.

·          To assign a command (command A) to a job, you must first assign the job the command or commands for entering the view of command A.

·          Make sure all commands in a schedule are compliant to the command syntax. The system does not check the syntax when you assign a command to a job.

·          A schedule cannot contain any one of these commands: telnet, ftp, ssh2, and monitor process.

·          A schedule does not support user interaction. If a command requires a yes or no answer, the system always assumes that a Y or Yes is entered. If a command requires a character string input, the system assumes that either the default character string (if any) or a null string is entered.

·          A schedule is executed in the background, and no output (except for logs, traps, and debug information) is displayed for the schedule.

Configuration procedure

To configure a schedule for the device:

 

Step	Command	Remarks
1.       Enter system view.	system-view	N/A
2.       Create a job.	scheduler job job-name	By default, no job exists.
3.       Assign a command to the job.	command id command	By default, no command is assigned to a job. A command with a smaller ID is executed first.
4.       Exit to system view.	quit	N/A
5.       Create a schedule.	scheduler schedule schedule-name	By default, no schedule exists.
6.       Assign a job to a schedule.	job job-name	By default, no job is assigned to a schedule. You can assign multiple jobs to a schedule. The jobs will be executed concurrently.
7.       Exit to system view.	quit	N/A
8.       Assign user roles to the schedule.	user-role role-name	By default, a schedule has the user role of the schedule creator. You can assign up to 64 user roles to a schedule. A command in a schedule can be executed if it is permitted by one or more user roles of the schedule.
9.       Specify an execution time table for the schedule.	·         Specify the execution date and time: time at time date ·         Specify the execution days and time: time once at time [ month-date month-day | week-day week-day&<1-7> ] ·         Specify the execution delay time: time once delay time ·         Specify the periodic execution points of time: time repeating at time [ month-date [ month-day | last ] | week-day week-day&<1-7> ] ·         Specify the start time and execution interval: time repeating [ at time [date ] ] interval interval	By default, no execution time is specified for a schedule. Executing the clock datetime, clock summer-time, and clock timezone commands does not change the execution time table that is already configured for a schedule.

 

Schedule configuration example

Network requirements

As shown in Figure 1, two interfaces of the device are connected to users.

To save energy, configure the device to perform the following operations:

·          Enable the interfaces at 8:00 a.m. every Monday through Friday.

·          Disable the interfaces at 18:00 every Monday through Friday.

Figure 1 Network diagram

‌

Scheduling procedure

# Enter system view.

<Sysname> system-view

# Configure a job for disabling interface GigabitEthernet 1/0/1.

[Sysname] scheduler job shutdown-GigabitEthernet1/0/1

[Sysname-job-shutdown-GigabitEthernet1/0/1] command 1 system-view

[Sysname-job-shutdown-GigabitEthernet1/0/1] command 2 interface gigabitethernet 1/0/1

[Sysname-job-shutdown-GigabitEthernet1/0/1] command 3 shutdown

[Sysname-job-shutdown-GigabitEthernet1/0/1] quit

# Configure a job for enabling interface GigabitEthernet 1/0/1.

[Sysname] scheduler job start-GigabitEthernet1/0/1

[Sysname-job-start-GigabitEthernet1/0/1] command 1 system-view

[Sysname-job-start-GigabitEthernet1/0/1] command 2 interface gigabitethernet 1/0/1

[Sysname-job-start-GigabitEthernet1/0/1] command 3 undo shutdown

[Sysname-job-start-GigabitEthernet1/0/1] quit

# Configure a job for disabling interface GigabitEthernet 1/0/2.

[Sysname] scheduler job shutdown-GigabitEthernet1/0/2

[Sysname-job-shutdown-GigabitEthernet1/0/2] command 1 system-view

[Sysname-job-shutdown-GigabitEthernet1/0/2] command 2 interface gigabitethernet 1/0/2

[Sysname-job-shutdown-GigabitEthernet1/0/2] command 3 shutdown

[Sysname-job-shutdown-GigabitEthernet1/0/2] quit

# Configure a job for enabling interface GigabitEthernet 1/0/2.

[Sysname] scheduler job start-GigabitEthernet1/0/2

[Sysname-job-start-GigabitEthernet1/0/2] command 1 system-view

[Sysname-job-start-GigabitEthernet1/0/2] command 2 interface gigabitethernet 1/0/2

[Sysname-job-start-GigabitEthernet1/0/2] command 3 undo shutdown

[Sysname-job-start-GigabitEthernet1/0/2] quit

# Configure a periodic schedule for enabling the interfaces at 8:00 a.m. every Monday through Friday.

[Sysname] scheduler schedule START-pc1/pc2

[Sysname-schedule-START-pc1/pc2] job start-GigabitEthernet1/0/1

[Sysname-schedule-START-pc1/pc2] job start-GigabitEthernet1/0/2

[Sysname-schedule-START-pc1/pc2] time repeating at 8:00 week-day mon tue wed thu fri

[Sysname-schedule-START-pc1/pc2] quit

# Configure a periodic schedule for disabling the interfaces at 18:00 every Monday through Friday.

[Sysname] scheduler schedule STOP-pc1/pc2

[Sysname-schedule-STOP-pc1/pc2] job shutdown-GigabitEthernet1/0/1

[Sysname-schedule-STOP-pc1/pc2] job shutdown-GigabitEthernet1/0/2

[Sysname-schedule-STOP-pc1/pc2] time repeating at 18:00 week-day mon tue wed thu fri

[Sysname-schedule-STOP-pc1/pc2] quit

Verifying the scheduling

# Display the configuration information of all jobs.

[Sysname] display scheduler job

Job name: shutdown-GigabitEthernet1/0/1

 system-view

 interface gigabitethernet 1/0/1

 shutdown

 

Job name: shutdown-GigabitEthernet1/0/2

 system-view

 interface gigabitethernet 1/0/2

 shutdown

 

Job name: start-GigabitEthernet1/0/1

 system-view

 interface gigabitethernet 1/0/1

 undo shutdown

 

Job name: start-GigabitEthernet1/0/2

 system-view

 interface gigabitethernet 1/0/2

 undo shutdown

# Display the schedule information.

[Sysname] display scheduler schedule

Schedule name        : START-pc1/pc2

Schedule type        : Run on every Mon Tue Wed Thu Fri at 08:00:00

Start time           : Wed Sep 28 08:00:00 2011

Last execution time  : Wed Sep 28 08:00:00 2011

Last completion time : Wed Sep 28 08:00:03 2011

Execution counts     : 1

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

Job name                                          Last execution status

start-GigabitEthernet1/0/1                                 Successful

start-GigabitEthernet1/0/2                                 Successful

 

Schedule name        : STOP-pc1/pc2

Schedule type        : Run on every Mon Tue Wed Thu Fri at 18:00:00

Start time           : Wed Sep 28 18:00:00 2011

Last execution time  : Wed Sep 28 18:00:00 2011

Last completion time : Wed Sep 28 18:00:01 2011

Execution counts     : 1

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

Job name                                          Last execution status

shutdown-GigabitEthernet1/0/1                              Successful

shutdown-GigabitEthernet1/0/2                              Successful

# Display schedule log information.

[Sysname] display scheduler logfile

Job name        : start-GigabitEthernet1/0/1

Schedule name   : START-pc1/pc2

Execution time  : Wed Sep 28 08:00:00 2011

Completion time : Wed Sep 28 08:00:02 2011

--------------------------------- Job output -----------------------------------

<Sysname>system-view

System View: return to User View with Ctrl+Z.

[Sysname]interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1]undo shutdown

 

Job name        : start-GigabitEthernet1/0/2

Schedule name   : START-pc1/pc2

Execution time  : Wed Sep 28 08:00:00 2011

Completion time : Wed Sep 28 08:00:02 2011

--------------------------------- Job output -----------------------------------

<Sysname>system-view

System View: return to User View with Ctrl+Z.

[Sysname]interface gigabitethernet 1/0/2.

[Sysname-GigabitEthernet1/0/2]undo shutdown

 

Job name        : shutdown-GigabitEthernet1/0/1

Schedule name   : STOP-pc1/pc2

Execution time  : Wed Sep 28 18:00:00 2011

Completion time : Wed Sep 28 18:00:01 2011

--------------------------------- Job output -----------------------------------

<Sysname>system-view

System View: return to User View with Ctrl+Z.

[Sysname]interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1]shutdown

 

Job name        : shutdown-GigabitEthernet1/0/2

Schedule name   : STOP-pc1/pc2

Execution time  : Wed Sep 28 18:00:00 2011

Completion time : Wed Sep 28 18:00:01 2011

--------------------------------- Job output -----------------------------------

<Sysname>system-view

System View: return to User View with Ctrl+Z.

[Sysname]interface gigabitethernet 1/0/2

[Sysname-GigabitEthernet1/0/2]shutdown

Disabling password recovery capability

Password recovery capability controls console user access to the device configuration and SDRAM from BootWare menus.

If password recovery capability is enabled, a console user can access the device configuration without authentication to configure a new password.

If password recovery capability is disabled, console users must restore the factory-default configuration before they can configure new passwords. Restoring the factory-default configuration deletes the next-startup configuration files.

To enhance system security, disable password recovery capability.

To disable password recovery capability:

 

Step	Command	Remarks
1.       Enter system view.	system-view	N/A
2.       Disable password recovery capability.	undo password-recovery enable	By default, password recovery capability is enabled.

 

Specifying the preferred airflow direction

	IMPORTANT: This feature is not supported on the S5130-30S-HI, S5130-54S-HI, and S5130-54QS-HI switches.

 

Two fan models are available for the device. One model has air flow from the port side to the power supply side. The other model has air flow from the power supply side to the port side.

Select the correct fan model and set the preferred airflow direction to the airflow direction of the ventilation system in the equipment room. If a fan is not operating correctly or has a different airflow direction than the configured one, the system sends traps and logs.

To specify the preferred airflow direction:

 

Step	Command	Remarks
1.       Enter system view.	system-view	N/A
2.       Specify the preferred airflow direction.	fan prefer-direction slot slot-number { power-to-port | port-to-power }	The default airflow direction is from the power supply side to the port side.

 

Setting the port status detection timer

The device starts a port status detection timer when a port is shut down by a protocol. Once the timer expires, the device brings up the port so the port status reflects the port's physical status.

To set the port status detection timer:

 

Step	Command	Remarks
1.       Enter system view.	system-view	N/A
2.       Set the port status detection timer.	shutdown-interval time	The default setting is 30 seconds.

 

Monitoring CPU usage

To monitor CPU usage, the device performs the following operations:

·          Samples CPU usage at an interval of 1 minute, and compares the sample with the CPU usage threshold. If the sample is greater, the device sends a trap.

·          Samples and saves CPU usage at a configurable interval if CPU usage tracking is enabled.

To monitor CPU usage:

 

Step	Command	Remarks
1.       Enter system view.	system-view	N/A
2.       Set the CPU usage threshold.	monitor cpu-usage threshold cpu-threshold [ slot slot-number [ cpu cpu-number ] ]	By default, the CPU usage threshold is 99%.
3.       Enable CPU usage tracking.	monitor cpu-usage enable [ slot slot-number [ cpu cpu-number ] ]	By default, CPU usage tracking is enabled.
4.       Set the sampling interval for CPU usage tracking.	monitor cpu-usage interval interval [ slot slot-number [ cpu cpu-number ] ]	By default, the sampling interval for CPU usage tracking is 1 minute.
5.       Exit to user view.	quit	N/A
6.       Display CPU usage statistics.	display cpu-usage [ summary ] [ slot slot-number [ cpu cpu-number ] ]	This command is available in any view.
7.       Display CPU usage monitoring settings.	display cpu-usage configuration [ slot slot-number [ cpu cpu-number ] ]	This command is available in any view.
8.       Display the historical CPU usage statistics in a coordinate system.	display cpu-usage history [ job job-id ] [ slot slot-number [ cpu cpu-number ] ]	This command is available in any view.

 

Setting memory alarm thresholds

To ensure correct operation and improve memory efficiency, the system monitors the amount of free memory space in real time. If the amount of free memory space reaches the minor alarm, severe alarm, or critical alarm threshold, the system generates an alarm and sends it to affected service modules or processes.

The early warning feature warns you of an approaching insufficient-memory condition.

As shown in Table 1 and Figure 2, the system supports the following free-memory thresholds:

·          Sufficient-memory threshold.

·          Early-warning threshold.

·          Normal state threshold.

·          Minor alarm threshold.

·          Severe alarm threshold.

·          Critical alarm threshold.

Table 1 Memory alarm notifications and memory alarm-removed notifications

Notification	Triggering condition	Remarks
Early-warning notification	The amount of free memory space decreases to or below the early-warning threshold for the first time.	After generating and sending an early-warning notification, the system does not generate and send any additional early-warning notifications until the first early warning is removed.
Minor alarm notification	The amount of free memory space decreases to or below the minor alarm threshold for the first time.	After generating and sending a minor alarm notification, the system does not generate and send any additional minor alarm notifications until the first minor alarm is removed.
Severe alarm notification	The amount of free memory space decreases to or below the severe alarm threshold for the first time.	After generating and sending a severe alarm notification, the system does not generate and send any additional severe alarm notifications until the first severe alarm is removed.
Critical alarm notification	The amount of free memory space decreases to or below the critical alarm threshold for the first time.	After generating and sending a critical alarm notification, the system does not generate and send any additional critical alarm notifications until the first critical alarm is removed.
Critical alarm-removed notification	The amount of free memory space increases to or above the severe alarm threshold.	N/A
Severe alarm-removed notification	The amount of free memory space increases to or above the minor alarm threshold.	N/A
Minor alarm-removed notification	The amount of free memory space increases to or above the normal state threshold.	N/A
Early-warning-removed notification	The amount of free memory space increases to or above the sufficient-memory threshold.	N/A

 

Figure 2 Memory alarm notification and alarm-removed notification

 

To set memory alarm thresholds:

 

Step	Command	Remarks
1.       Enter system view.	system-view	N/A
2.       Set the memory usage threshold.	memory-threshold [ slot slot-number [ cpu cpu-number ] ] usage memory-threshold	The default memory usage threshold is 100%.
3.       Set the free-memory thresholds.	memory-threshold [ slot slot-number [ cpu cpu-number ] ] [ ratio ] minor minor-value severe severe-value critical critical-value normal normal-value [ early-warning early-warning-value secure secure-value ]	The default settings are as follows: ·         Minor alarm threshold—96 MB. ·         Severe alarm threshold—64 MB. ·         Critical alarm threshold—48 MB. ·         Normal state threshold—128 MB. ·         Early-warning threshold—192 MB. ·         Sufficient-memory threshold—304 MB.

 

Configuring the temperature alarm thresholds

The device monitors its temperature by temperature sensors. You can configure the following temperature thresholds:

·          Low-temperature threshold.

·          High-temperature warning threshold.

·          High-temperature alarming threshold.

When the temperature drops below the low-temperature threshold or reaches the high-temperature warning or alarming threshold, the device performs the following operations:

·          Sends log messages and traps.

·          Sets LEDs on the device panel.

To configure the temperature alarm thresholds:

 

Step	Command	Remarks
1.       Enter system view.	system-view	N/A
2.       Configure the temperature alarm thresholds.	temperature-limit slot slot-number hotspot sensor-number lowlimit warninglimit [ alarmlimit ]	The defaults vary by temperature sensor model. To view the defaults, use the undo temperature-limit command to restore the defaults and then execute the display environment command. The high-temperature alarming threshold must be higher than the high-temperature warning threshold. The high-temperature warning threshold must be higher than the low-temperature threshold.

 

Configuring device poweroff alarming

	IMPORTANT: This feature is supported only on switches that support hot-swappable power supplies.

 

This feature enables the device to detect a device poweroff event and issue a poweroff alarm by sending SNMP notifications or log messages.

To configure device poweroff alarming:

 

Step	Command	Remarks
1.       Enter system view.	system-view	N/A
2.       Configure poweroff alarm destination host settings.	dying-gasp host { ip-address | ipv6 ipv6-address } snmp-trap version { v1 | v2c } securityname security-string dying-gasp host { ip-address | ipv6 ipv6-address } syslog	By default, no poweroff alarm destination host settings are configured. The device can send the poweroff alarm to multiple destination hosts by using either or both of an SNMP notification and a log message.
3.       Specify the source interface for sending the poweroff alarm.	dying-gasp source interface-type { interface-number | interface-number.subnumber }	By default, no source interface is specified. On an IPv4 network, the device uses the primary IPv4 address of the output interface for the route to the destination host as the source address. On an IPv6 network, the device selects a source IPv6 address as defined in RFC 3484.

 

Setting serial numbers for hot-swappable fans

After correctly setting serial numbers for hot-swappable fans, you can use the display device manuinfo or display device manuinfo fan command to display the manufacturing dates of the fans.

Configuration restrictions and guidelines

The serial number of a hot-swappable fan is printed on a label on the fan. Enter the serial number correctly.

Commands display device manuinfo and display device manuinfo fan can display the manufacturing date of a fan only if you set the correct serial number for the fan.

·          If you do not set a serial number for any hot-swappable fan, the serial number and manufacturing date fields display The operation is not supported on the specified fan.

·          If you set serial numbers for only some of the fans, the fields display None for the fans for which you do not set serial numbers.

Configuration procedure

To set the serial number of a hot-swappable fan:

 

Step	Command	Remarks
1.       Enter system view.	system-view	N/A
2.       Set the serial number of a hot-swappable fan.	download manuinfo slot slot-number fan fan-id serial-num serial-number	By default, the serial number of a hot-swappable fan is not set.

 

Disabling USB interfaces

You can use USB interfaces to upload or download files. By default, all USB interfaces are enabled. You can disable USB interfaces as needed.

To disable all USB interfaces:

 

Step	Command	Remarks
1.       Enter system view.	system-view	N/A
2.       Disable USB interfaces.	usb disable	By default, all USB interfaces are enabled. Before using this command, use the umount command to unmount all USB partitions. For more information about this command, see Fundamentals Command Reference.

 

Verifying and diagnosing transceiver modules

Verifying transceiver modules

You can use one of the following methods to verify the genuineness of a transceiver module:

·          Display the key parameters of a transceiver module, including its transceiver type, connector type, central wavelength of the transmit laser, transfer distance, and vendor name.

·          Display its electronic label. The electronic label is a profile of the transceiver module and contains the permanent configuration, including the serial number, manufacturing date, and vendor name. The data is written to the transceiver module or the device's storage component during debugging or testing of the transceiver module or device.

The device regularly checks transceiver modules for their vendor names. If a transceiver module does not have a vendor name or the vendor name is not H3C, the device repeatedly outputs traps and log messages. For information about logging rules, see Network Management and Monitoring Configuration.

To verify transceiver modules, execute the following commands in any view:

 

Task	Command	Remarks
Display the key parameters of transceiver modules.	display transceiver interface [ interface-type interface-number ]	N/A
Display the electrical label information of transceiver modules.	display transceiver manuinfo interface [ interface-type interface-number ]	This command cannot display information for some transceiver modules.

 

Diagnosing transceiver modules

The device provides the alarm and digital diagnosis functions for transceiver modules. When a transceiver module fails or is not operating correctly, you can perform the following tasks:

·          Check the alarms that exist on the transceiver module to identify the fault source.

·          Examine the key parameters monitored by the digital diagnosis function, including the temperature, voltage, laser bias current, TX power, and RX power.

To diagnose transceiver modules, execute the following commands in any view:

 

Task	Command	Remarks
Display transceiver alarms.	display transceiver alarm interface [ interface-type interface-number ]	N/A
Display the current values of the digital diagnosis parameters on transceiver modules.	display transceiver diagnosis interface [ interface-type interface-number ]	This command cannot display information about some transceiver modules.

 

Restoring the factory-default configuration

	CAUTION: This task is disruptive. Use this task only when you cannot troubleshoot the device by using other methods, or you want to use the device in a different scenario.

 

To restore the factory-default configuration for the device, execute the following command in user view:

 

Task	Command	Remarks
Restore the factory-default configuration for the device.	restore factory-default	This command takes effect after a device reboot.

 

Displaying and maintaining device management configuration

Execute display commands in any view. Execute the reset scheduler logfile command in user view. Execute the reset version-update-record command in system view.

 

Task	Command
Display the system time, date, time zone, and daylight saving time.	display clock
Display the copyright statement.	display copyright
Display current CPU usage statistics.	display cpu-usage [ summary ] [ slot slot-number [ cpu cpu-number ] ]
Display CPU usage monitoring settings.	display cpu-usage configuration [ slot slot-number [ cpu cpu-number ] ]
Display historical CPU usage statistics in a coordinate system.	display cpu-usage history [ job job-id ] [ slot slot-number [ cpu cpu-number ] ]
Display hardware information.	display device [ flash | usb ] [ slot slot-number [ subslot subslot-number ] | verbose ]
Display electronic label information for the device.	display device manuinfo [ slot slot-number [ subslot subslot-number ] ]
Display electronic label information for a fan.	display device manuinfo slot slot-number fan fan-id
Display electronic label information for a power supply.	display device manuinfo slot slot-number power power-id
Display or save operating information for features and hardware modules.	display diagnostic-information [ hardware | infrastructure | l2 | l3 | service ] [ key-info ] [ filename ]
Display poweroff alarm destination host settings. (This command is supported only on switches that support hot-swappable power supplies.)	display dying-gasp host
Display device temperature information.	display environment [ slot slot-number ]
Display the operating states of fans.	display fan [ slot slot-number [ fan-id ] ]
Display memory usage statistics.	display memory [ summary ] [ slot slot-number [ cpu cpu-number ] ]
Display memory alarm thresholds and statistics.	display memory-threshold [ slot slot-number [ cpu cpu-number ] ]
Display power supply information.	display power [ slot slot-number [ power-id ] ]
Display job configuration information.	display scheduler job [ job-name ]
Display job execution log information.	display scheduler logfile
Display the automatic reboot schedule.	display scheduler reboot
Display schedule information.	display scheduler schedule [ schedule-name ]
Display system stability and status information.	display system stable state
Display system version information.	display version
Display startup software image upgrade records.	display version-update-record
Clear job execution log information.	reset scheduler logfile
Clear startup software image upgrade records.	reset version-update-record