When the information center saves a log message to the log file, it uses the device master key to calculate a digest for the log file and saves the digest in the log file. The digest is used to perform integrity check for the log file. For more information about the master key, see public key management in Security Configuration Guide.

When this command is executed, the information center uses the master key to recalculate a digest for the log file and then compares the digest with that saved in the log file. If the two digests are consistent, the log file passes the integrity check. If they do not match, the log file fails the integrity check.

Examples

# Perform integrity check for log file flash:/logfile/logfile.log.

<Sysname> check logfile flash:/logfile/logfile.log

The integrity check for the logfile succeeded.

Related commands

set master-key (Security Command Reference)

diagnostic-logfile save

Use diagnostic-logfile save to manually save diagnostic logs from the diagnostic log file buffer to the diagnostic log file.

Syntax

diagnostic-logfile save

Views

Any view

Predefined user roles

network-admin

Usage guidelines

You can specify the directory to save the diagnostic log file by using the info-center diagnostic-logfile directory command.

The device clears the diagnostic log file buffer after saving the buffered diagnostic logs to the diagnostic log file.

If the diagnostic log file buffer is empty, this command displays a success message even though no logs are saved to the diagnostic log file.

Examples

# Manually save diagnostic logs from the diagnostic log file buffer to the diagnostic log file.

<Sysname> diagnostic-logfile save

The contents in the diagnostic log file buffer have been saved to the file flash:/diagfile/diagfile.log.

Related commands

info-center diagnostic-logfile enable

info-center diagnostic-logfile directory

display diagnostic-logfile summary

Use display diagnostic-logfile summary to display the diagnostic log file configuration.

Syntax

display diagnostic-logfile summary

Views

Any view

Predefined user roles

network-admin

network-operator

Examples

# Display the diagnostic log file configuration.

<Sysname> display diagnostic-logfile summary

Diagnostic log file: Enabled.

Diagnostic log file size quota: 10 MB

Diagnostic log file directory: flash:/diagfile

Writing frequency: 24 hour 0 min 0 sec

Table 1 Command output

Field	Description
Diagnostic log file	Status of the diagnostic log file: · Enabled—Diagnostic logs can be output to the diagnostic log file. · Disabled—Diagnostic logs cannot be output to the diagnostic log file.
Diagnostic log file size quota	Maximum size for the diagnostic log file, in MB.
Log file directory	Directory where the diagnostic log file is saved.
Writing frequency	Interval at which the device saves diagnostic logs from the buffer to the diagnostic log file.

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display info-center

Use display info-center to display information center configuration.

Syntax

display info-center

Views

Any view

Predefined user roles

network-admin

network-operator

Examples

# Display information center configuration.

<Sysname> display info-center

Information Center: Enabled

Console: Enabled

Monitor: Enabled

Log host: Enabled

1.1.1.1, log output filter: loghost1

port number: 514, host facility: local7

Log buffer: Enabled

Max buffer size 1024, current buffer size 512,

Current messages 0, dropped messages 0, overwritten messages 0

Log file: Enabled

Security log file: Enabled

Information timestamp format:

Log host: Date

Other output destination: Date

display info-center file-server

Use display info-center file-server to display the configuration of the remote server and the backup records.

Syntax

display info-center file-server

Views

User view

Predefined user roles

network-admin

network-operator

Usage guidelines

When the local device performs a log file backup to the remote server, it records relevant information for this backup operation. The device supports saving a maximum of 10 backup records.

You can use this command to view information about backup operations, including the backup execution time and result.

Examples

# Display the configuration of the remote server and the backup records.

<Sysname> display info-center file-server

Username: test

Protocol: tcp

IP: 1.1.1.1

Port: 22

VPN: vpnname

Directory: /backup

Filename prefix: my_backup

File type: logfile, security-logfile

Backup records:

No. TimeStamp FileName

1 Wed Jan 15 14:20:18 2022 my_backup_20220115142018.log

!2 Wed Jan 15 14:33:10 2022 my_backup_20220115143310.log

3 Wed Jan 15 14:49:37 2022 my_backup_20220115144937.log

The exclamation mark (!) indicates that the backup attempt failed.

Table 2 Command output

Field	Description
Username	Username for logging in to the remote server. This field displays N/A if the username is not configured. To back up log files through FTP or SCP, you must configure the login username and password.
Protocol	Protocol used in backing up log files.
IP	IP address of the remote server.
Port	Port number of the remote server.
VPN	VPN to which the remote server belongs.
Directory	Log file storage directory on the remote server.
Filename prefix	Filename prefix used in saving log files to the remote server.
Backup records	Records of log file backups, including the following information: · No.—Sequence number of the backup operation. · TimeStamp—System time when the device started backing up log files. · FileName—Filename used in saving log files on the remote server. The name consists of the filename prefix (displayed in the Filename prefix field) and the timestamp (based on the value displayed in the TimeStamp field).

Related commands

info-center file-server transport-type

info-center file-server user

display info-center filter

Use display info-center filter to display information about log output filters.

Syntax

display info-center filter [ filtername ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

filter-name: Specifies an existing log output filter by its name. If you do not specify a log output filter, this command displays information about all log output filters.

Examples

# Display information about log output filter loghost1.

<Sysname> display info-center filter loghost1

Log output filter: loghost1

Module Rule

ARP Debugging

CFGLOG Deny

Default Informational

Table 3 Command output

Field	Description
Log output filter:	Name of the log output filter.
Module	Module to which the log output filter applies.
Rule	Rules in the log output filter.

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Related commands

info-center filter

display logbuffer

Use display logbuffer to display the state of the log buffer and the log information in the log buffer.

Syntax

display logbuffer [ reverse ] [ level severity | size buffersize | slot slot-number ] *

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

reverse: Displays log entries chronologically, with the most recent entry at the top. If you do not specify this keyword, the command displays log entries chronologically, with the oldest entry at the top.

level severity: Specifies a severity level in the range of 0 to 7. If you do not specify a severity level, this command displays log information for all levels.

Table 4 Log levels

Severity value	Level	Description
0	Emergency	The system is unusable. For example, the system authorization has expired.
1	Alert	Action must be taken immediately. For example, traffic on an interface exceeds the upper limit.
2	Critical	Critical condition. For example, the device temperature exceeds the upper limit, the power module fails, or the fan tray fails.
3	Error	Error condition. For example, the link state changes.
4	Warning	Warning condition. For example, an interface is disconnected, or the memory resources are used up.
5	Notification	Normal but significant condition. For example, a terminal logs in to the device, or the device reboots.
6	Informational	Informational message. For example, a command or a ping operation is executed.
7	Debugging	Debugging message.

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size buffersize: Specifies the number of latest logs to be displayed. The value range is 1 to 1024. If you do not specify this option, the command displays all logs in the log buffer.

slot slot-number: Specifies a card by its slot number. If you do not specify a card, this command displays information on all cards.

Examples

# Display the state and log information of the log buffer.

<Sysname> display logbuffer

Log buffer: Enabled

Max buffer size: 1024

Actual buffer size: 512

Dropped messages: 0

Overwritten messages: 718

Current messages: 512

%Jun 17 15:57:09:578 2019 Sysname SYSLOG/7/SYS_RESTART:System restarted --

...

Table 5 Command output

Field	Description
Log buffer	Status of the log buffer: · Enabled—Logs can be output to the log buffer. · Disabled—Logs cannot be output to the buffer.
Max buffer size	Maximum buffer size supported by the device.
Actual buffer size	Maximum buffer size configured by using the info-center logbuffer size command.
Dropped messages	Number of dropped messages.
Overwritten messages	Number of overwritten messages.
Current messages	Number of current messages.
Failed to obtain the specified data. The following tries to display all data in the log buffer.	The device fails to obtain the data from the database because of abnormal interaction with the database. Then all data in the log buffer will be displayed.

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Related commands

info-center logbuffer

reset logbuffer

display logbuffer summary

Use display logbuffer summary to display the summary of the log buffer.

Syntax

display logbuffer summary [ level severity | slot slot-number ] *

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

level severity: Specifies a severity level in the range of 0 to 7. If you do not specify a severity level, this command displays log information of all levels in the log buffer. For more information about log levels, see Table 4.

slot slot-number: Specifies a card by its slot number. If you do not specify a card, this command displays information on all cards.

Examples

# Display the summary of the log buffer.

<Sysname> display logbuffer summary

Slot EMERG ALERT CRIT ERROR WARN NOTIF INFO DEBUG

1 0 0 0 7 0 34 38 0

Table 6 Command output

Field	Description
EMERG	Represents emergency. For more information, see Table 4.
ALERT	Represents alert. For more information, see Table 4.
CRIT	Represents critical. For more information, see Table 4.
ERROR	Represents error. For more information, see Table 4.
WARN	Represents warning. For more information, see Table 4.
NOTIF	Represents notification. For more information, see Table 4.
INFO	Represents informational. For more information, see Table 4.
DEBUG	Represents debug. For more information, see Table 4.

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display logfile summary

Use display logfile summary to display the log file configuration.

Syntax

display logfile summary

Views

Any view

Predefined user roles

network-admin

network-operator

Examples

# Display the log file configuration.

<Sysname> display logfile summary

Log file: Enabled.

Log file size quota: 10 MB

Log file directory: flash:/logfile

Writing frequency: 0 hour 1 min 10 sec

Table 7 Command output

Field	Description
Log file	Status of the log file feature: · Enabled—Logs can be output to the log file. · Disabled—Logs cannot be output to the log file.
Log file size quota	Maximum storage space reserved for a log file, in MB.
Log file directory	Log file directory.
Writing frequency	Log file writing frequency.

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display security-logfile summary

Use display security-logfile summary to display the summary of the security log file.

Syntax

display security-logfile summary

Views

Any view

Predefined user roles

security-audit

Usage guidelines

To use this command, a local user must have the security-audit user role. For information about configuring the security-audit user role, see BRAS Services Command Reference.

Examples

# Display the summary of the security log file.

<Sysname> display security-logfile summary

Security log file: Enabled

Security log file size quota: 10 MB

Security log file directory: flash:/seclog

Alarm threshold: 80%

Current usage: 30%

Writing frequency: 1 hour 0 min 0 sec

Table 8 Command output

Field	Description
Security log file	Status of the security log file feature: · Enabled—Security logs can be output to the security log file. · Disabled—Security logs cannot be output to the security log file.
Security log file size quota	Maximum storage space reserved for the security log file.
Security log file directory	Security log file directory.
Alarm threshold	Alarm threshold of the security log file usage.
Current usage	Current usage of the security log file.
Writing frequency	Security log file writing frequency.

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Related commands

authorization-attribute (BRAS Services Command Reference)

display trace-logfile summary

Use display trace-logfile summary to display the trace log file configuration.

Syntax

display trace-logfile summary

Views

Any view

Predefined user roles

network-admin

network-operator

Examples

# Display the trace log file configuration.

<Sysname> display trace-logfile summary

Trace log file: Enabled.

Trace log file size quota: 1 MB

Trace log file directory: flash:/tracefile

Writing frequency: 24 hour 0 min 0 sec

Table 9 Command output

Field	Description
Trace log file	Status of the trace log file feature: · Enabled—Trace logs can be saved to the trace log file on the storage device. · Disabled—Trace logs cannot be saved to the trace log file on the storage device.
Trace log file size quota	Maximum storage space reserved for the trace log file.
Trace log file directory	Trace log file directory.
Writing frequency	Trace log file writing frequency.

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enable log updown

Use enable log updown to enable an interface to generate link up or link down logs when the interface state changes.

Use undo enable log updown to disable an interface from generating link up or link down logs when the interface state changes.

Syntax

enable log updown

undo enable log updown

Default

All interfaces are allowed to generate link up and link down logs.

Views

Interface view

Predefined user roles

network-admin

Examples

# Disable Ten-GigabitEthernet 3/0/1 from generating link up or link down logs.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 3/0/1

[Sysname-Ten-GigabitEthernet3/0/1] undo enable log updown

info-center diagnostic-logfile directory

Use info-center diagnostic-logfile directory to configure the directory to save the diagnostic log file.

Syntax

info-center diagnostic-logfile directory dir-name

Default

The diagnostic log file is saved in the diagfile folder under the root directory of the storage device.

Views

System view

Predefined user roles

network-admin

Parameters

dir-name: Specifies a directory by its name, a string of 1 to 64 characters.

Usage guidelines

The specified directory must have been created.

The device uses the default diagnostic log file directory after a reboot or an active/standby MPU switchover.

Examples

# Set the diagnostic log file directory to flash:/test.

<Sysname> mkdir test

Creating directory flash:/test... Done.

<Sysname> system-view

[Sysname] info-center diagnostic-logfile directory flash:/test

info-center diagnostic-logfile enable

Use info-center diagnostic-logfile enable to enable saving of diagnostic logs to the diagnostic log file.

Use undo info-center diagnostic-logfile enable to disable saving of diagnostic logs to the diagnostic log file.

Syntax

info-center diagnostic-logfile enable

undo info-center diagnostic-logfile enable

Default

Saving of diagnostic logs to the diagnostic log file is enabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

This command enables saving of diagnostic logs to the diagnostic log file for centralized management. Users can view the diagnostic logs to monitor device activities and to troubleshoot problems.

Examples

# Enable saving of diagnostic logs to the diagnostic log file.

<Sysname> system-view

[Sysname] info-center diagnostic-logfile enable

info-center diagnostic-logfile frequency

Use info-center diagnostic-logfile frequency to configure the interval at which the device saves diagnostic logs from the diagnostic log file buffer to the diagnostic log file.

Use undo info-center diagnostic-logfile frequency to restore the default.

Syntax

info-center diagnostic-logfile frequency freq-sec

undo info-center diagnostic-logfile frequency

Default

The diagnostic log file saving interval is 600 seconds.

Views

System view

Predefined user roles

network-admin

Parameters

freq-sec: Specifies the diagnostic log file saving interval in seconds. The value range is 10 to 86400.

Usage guidelines

The device outputs diagnostic logs to the diagnostic log file buffer, and then saves the buffered logs to the diagnostic log file at the specified interval.

Examples

# Set the diagnostic log file saving interval to 600 seconds.

<Sysname> system-view

[Sysname] info-center diagnostic-logfile frequency 600

Related commands

info-center diagnostic-logfile enable

info-center diagnostic-logfile quota

Use info-center diagnostic-logfile quota to set the maximum size for the diagnostic log file.

Use undo info-center diagnostic-logfile quota to restore the default.

Syntax

info-center diagnostic-logfile quota size

undo info-center diagnostic-logfile quota

Default

The maximum size for the diagnostic log file is 10 MB.

Views

System view

Predefined user roles

network-admin

Parameters

size: Specifies the maximum size for the diagnostic log file, in MB. The value range is 1 to 10.

Examples

# Set the maximum size to 2 MB for the diagnostic log file.

<Sysname> system-view

[Sysname] info-center diagnostic-logfile quota 2

info-center enable

Use info-center enable to enable the information center.

Use undo info-center enable to disable the information center.

Syntax

info-center enable

undo info-center enable

Default

The information center is enabled.

Views

System view

Predefined user roles

network-admin

Examples

# Enable the information center.

<Sysname> system-view

[Sysname] info-center enable

Information center is enabled.

info-center file-server transport-type

Use info-center file-server transport-type to back up log files to a remote server.

Use undo info-center file-server transport-type to restore the default.

Syntax

info-center file-server transport-type { ftp | scp | tftp } { ipv4-address | ipv6 ipv6-address } [ port port-number ] [ vpn-instance vpn-instance-name ] [ directory directory ] filename-prefix filename-prefix [ file-type { logfile | security-logfile } ]

undo info-center file-server transport-type

Default

The device does not back up log files to a remote server.

Views

System view

Predefined user roles

network-admin

Parameters

ftp: Uses FTP to back up log files to the remote server. The device acts as the FTP client. For more information about FTP, see FTP and TFTP configuration in Fundamentals Configuration Guide.

scp: Uses SCP to back up log files to the remote server. The SCP protocol is based on SSH2 and provides secure file copy function. The device acts as the SCP client. For more information about SCP, see SSH configuration in Security Configuration Guide.

tftp: Uses TFTP to back up log files to the remote server. The device acts as the TFTP client. For more information about TFTP, see FTP and TFTP configuration in Fundamentals Configuration Guide.

ipv4-address: Specifies a remote server by its IPv4 address. The address must be the same as that configured on the remote server.

ipv6 ipv6-address: Specifies a remote server by its IPv6 address. The address must be the same as that configured on the remote server.

port port-number: Specifies the listening port number of the remote server, in the range of 1 to 65535. The default is 21 for FTP, 22 for SCP, and 69 for TFTP. The port number must be the same as that configured on the remote server.

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name, a case-sensitive string of 1 to 31 characters. If the log host is on the public network, do not specify this option.

directory directory: Specifies a log file storage directory on the remote server, a case-sensitive string of 1 to 63 characters. If you do not specify a directory, log files will be backed up to the working path of the remote server. You can use this option to specify a subdirectory under the working path of the remote server. For successful backup, make sure the subdirectory has been created on the remote server. Specify the relative path of the subdirectory for a TFTP or FTP server, and the absolute path of the subdirectory for an SCP server.

filename-prefix filename-prefix: Specifies a filename prefix used in saving log files to the remote server, a case-sensitive string of 1 to 30 characters. For example, you can use the device's IP address as the filename prefix to identify the device that generated the log files.

file-type { logfile | security-logfile }: Specifies the type of log files to back up. If you do not specify a log file type, all general log files and security log files under the corresponding directories will be backed up.

· logfile: General log files under the directory specified by the info-center logfile directory command.

· security-logfile: Security log files under the directory specified by the info-center security-logfile directory command.

Usage guidelines

You can use this command to back up general log files and/or security log files to a remote server through FTP, TFTP, or SCP, so as to enhance the log file security.

The device will automatically back up a log file to the remote server when a log file is full.

If you execute this command multiple times, the most recent configuration takes effect.

Examples

# Use FTP to back up general log files to the remote server at 1.1.1.1, and specify the port number and filename prefix as 8000 and 2-2-2-2, respectively.

<Sysname> system-view

[Sysname] info-center file-server transport-type ftp 1.1.1.1 port 8000 filename-prefix 2-2-2-2 file-type logfile

Related commands

display info-center file-server

info-center file-server user

Use info-center file-server user to specify the username and password for logging in to the remote server to back up log files.

Syntax

info-center file-server user user-name password { cipher | simple } password

undo info-center file-server user

Default

The username and password for logging in to the remote server to back up log files are not specified.

Views

System view

Predefined user roles

network-admin

Parameters

user-name: Specifies a username for logging in to the remote server.

password { cipher | simple } password: Specifies a password for logging in to the remote server, case sensitive.

· cipher: Specifies a password in encrypted form, a string of 33 to 117 characters.

· simple: Specifies a password in plaintext form, a string of 1 to 63 characters. For security purposes, the password specified in plaintext form will be stored in encrypted form.

Usage guidelines

Before backing up log files to a FTP or SCP remote server, use this command to specify the username and password for logging in to the remote server. The username and password configured in this command must be the same as those configured on the remote server.

If you execute this command multiple times, the most recent configuration takes effect.

Examples

# Specify the username and password for logging in to the FTP or SCP remote server as ftpuser and ftp123456, respectively.

<Sysname> system-view

[Sysname] info-center file-server user ftpuser password simple ftp123456

Related commands

display info-center file-server

info-center file-server transport-type

info-center filter

Use info-center filter to create a log output filter.

Use undo info-center filter to delete a log output filter.

Syntax

info-center filter filter-name { module-name | default } { deny | level severity }

undo info-center filter filter-name [ module-name | default ]

Default

No log output filters exist.

Views

System view

Predefined user roles

network-admin

Parameters

filter-name: Specifies a name for the log output filter, a case-insensitive string of 1 to 8 characters.

module-name: Specifies a module by its name. To view the names of supported modules, execute the info-center filter filter-name ? command.

default: Specifies the default log output filter rule. For the log host output destination, the logs of alert, critical, debugging, emergency, error, and informational levels for all modules can be output. You can customize the log output filter rules as required.

deny: Disables log output.

level severity: Specifies the lowest severity level for logs to be output. A severity level can be alert, critical, debugging, emergency, error, informational, notification, or warning. Logs at the specified severity level and higher levels are allowed to be output. For example, if you specify the warning severity in this option, the command will output logs at emergency, alert, critical, error, and warning levels. See Table 4 for more information about log severity levels.

Usage guidelines

This command allows you to configure rules to control log output to the log host. The module-name argument allows you to customize a log output filter rule for each module. If you do not customize a log output filter rule for a module, the module uses the default log output filter rule. The default log output filter rule allows logs of alert, critical, debugging, emergency, error, and informational levels to be output.

You can also use the info-center source command to configure log output filter rules. To control log output to a log host, the log output filter rule specified by the info-center filter command takes precedence over that specified by the info-center source command.

If you execute this command multiple times, the following rules apply:

· You can configure multiple log output filter rules and bind the log output filter rules to one log hosts or multiple log hosts.

· If the values of the filter-name and module-name arguments are the same, the most recent configuration takes effect.

· If the default keyword is specified and the value of the filter-name argument is the same, the most recent configuration takes effect.

Do not specify the default keyword and set the severity argument to informational simultaneously. Such configuration is the same as the default log output filter rule, thus the configuration will fail.

To edit or remove a module-specific log output filter rule, you must use the module-name argument.

Examples

# Configure log output filter f1 for the ACL module, and apply the filter to the log host at 1.1.1.1.

<Sysname> system-view

[Sysname] info-center filter f1 ACL level error

[Sysname] info-center loghost 1.1.1.1 filter f1

Related commands

display info-center filter

info-center loghost

info-center source

info-center loghost locate-info with-sn

Use info-center loghost locate-info with-sn to add the device serial number to the location field of logs sent to log hosts.

Use undo info-center loghost locate-info with-sn to restore the default.

Syntax

info-center loghost locate-info with-sn

undo info-center loghost locate-info with-sn

Default

The device does not add the device serial number to the location field of logs sent to log hosts.

Views

System view

Predefined user roles

network-admin

Examples

# Add the device serial number to the location field of logs sent to log hosts.

<Sysname> system-view

[Sysname] info-center loghost locate-info with-sn

info-center format

Use info-center format to set the format for logs sent to log hosts.

Use undo info-center format to restore the default.

Syntax

info-center format { cmcc | unicom }

undo info-center format

Default

Logs are sent to log hosts in standard format.

Views

System view

Predefined user roles

network-admin

Parameters

cmcc: Specifies the China Mobile Communications Corporation (CMCC) format.

unicom: Specifies the China Unicom format.

Usage guidelines

Logs can be sent to log hosts in standard, China Unicom, or CMCC format. For more information about log formats, see Network Management and Monitoring Configuration Guide.

The format specified by the info-center format command applies to all log hosts and that specified by the info-center loghost command applies to the specified log hosts. For a log host, the format specified by the info-center loghost command takes precedence over the format specified by the info-center format command.

Examples

# Set the log format to China Unicom for logs sent to log hosts.

<Sysname> system-view

[Sysname] info-center format unicom

Related commands

info-center loghost

info-center logbuffer

Use info-center logbuffer to enable log output to the log buffer.

Use undo info-center logbuffer to disable log output to the log buffer.

Syntax

info-center logbuffer

undo info-center logbuffer

Default

Log output to the log buffer is enabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

This command enables output of logs generated by service modules to the log buffer. To view log buffer information and buffered logs, use the display logbuffer command. To set the log buffer size, use the info-center logbuffer size command.

Examples

# Enable log output to the log buffer.

<Sysname> system-view

[Sysname] info-center logbuffer

Related commands

display logbuffer

info-center enable

info-center logbuffer size

Use info-center logbuffer size to set the maximum number of logs that can be stored in the log buffer.

Use undo info-center logbuffer size to restore the default.

Syntax

info-center logbuffer size buffersize

undo info-center logbuffer size

Default

The log buffer can store a maximum of 512 logs.

Views

System view

Predefined user roles

network-admin

Parameters

buffersize: Specifies the maximum number of logs that can be stored in the log buffer.The value range is 0 to 1024.

Examples

# Set the maximum log buffer size to 50.

<Sysname> system-view

[Sysname] info-center logbuffer size 50

# Restore the default maximum log buffer size.

<Sysname> system-view

[Sysname] undo info-center logbuffer size

Related commands

display logbuffer

info-center enable

info-center logfile alarm-threshold

Use info-center logfile alarm-threshold to set the log file usage alarm threshold.

Use undo info-center logfile alarm-threshold to restore the default.

Syntax

info-center logfile alarm-threshold usage

undo info-center logfile alarm-threshold

Default

The log file usage alarm threshold is 80% of the log file size. When the log file usage ratio reaches 80%, the system outputs a message to inform the user.

Views

System view

Predefined user roles

network-admin

Parameters

usage: Specifies an alarm threshold in percentage in the range of 0 to 100. Setting the alarm threshold to 0 disables the log file usage alarm feature.

Usage guidelines

After you set the log file usage alarm threshold, the system outputs a message to inform the user when the threshold is reached. The user can then back up the log file to avoid loss of log data.

Examples

# Set the log file usage alarm threshold to 90% of the general log file size.

<Sysname> system-view

[Sysname] info-center logfile alarm-threshold 90

info-center logfile directory

Use info-center logfile directory to specify the directory to save the log file.

Syntax

info-center logfile directory dir-name

Default

The log file is saved in the logfile directory under the root directory of the storage device. If the device has been CF partitioned, the log file is saved in the logfile directory under the second partition of the CF card.

Views

System view

Predefined user roles

network-admin

Parameters

dir-name: Specifies a directory by its name, a string of 1 to 64 characters.

Usage guidelines

The specified directory must have been created.

The log file has a .log extension. When the default log file directory runs out of space, use this command to specify a new log file directory.

The device uses the default log file directory after a reboot or an active/standby MPU switchover.

Examples

# Set the log file directory to flash:/test.

<Sysname> mkdir test

Creating directory flash:/test... Done.

<Sysname> system-view

[Sysname] info-center logfile directory flash:/test

Related commands

info-center logfile enable

Use info-center logfile enable to enable saving of logs to the log file.

Use undo info-center logfile enable to disable saving of logs to the log file.

Syntax

info-center logfile enable

undo info-center logfile enable

Default

Saving of logs to the log file is enabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

After you execute this command, the system outputs logs generated by service modules to the log file.

Examples

# Enable saving of logs to the log file.

<Sysname> system-view

[Sysname] info-center logfile enable

info-center logfile frequency

Use info-center logfile frequency to configure the interval at which the device saves logs from the log file buffer to the log file.

Use undo info-center logfile frequency to restore the default.

Syntax

info-center logfile frequency freq-sec

undo info-center logfile frequency

Default

The log file saving interval is 600 seconds.

Views

System view

Predefined user roles

network-admin

Parameters

freq-sec: Specifies the log file saving interval in seconds. The value range is 1 to 86400.

Usage guidelines

This command enables the device to automatically save logs in the log file buffer to the log file at the specified interval.

Examples

# Set the log file saving interval to 60000 seconds.

<Sysname> system-view

[Sysname] info-center logfile frequency 60000

Related commands

info-center logfile enable

info-center logfile size-quota

Use info-center logfile size-quota to set the maximum size for the log file.

Use undo info-center logfile size-quota to restore the default.

Syntax

info-center logfile size-quota size

undo info-center logfile size-quota

Default

The maximum log file size is 10 MB.

Views

System view

Predefined user roles

network-admin

Parameters

size: Specifies the maximum size for the log file, in MB.The value range is 1 to 10.

Examples

# Set the maximum size to 2 MB for the log file.

<Sysname> system-view

[Sysname] info-center logfile size-quota 2

Related commands

info-center logfile enable

info-center logging suppress duplicates

Use info-center logging suppress duplicates to enable duplicate log suppression.

Use undo info-center logging suppress duplicates to disable duplicate log suppression.

Syntax

info-center logging suppress duplicates

undo info-center logging suppress duplicates

Default

Duplicate log suppression is disabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

Output of consecutive duplicate logs (logs that have the same module name, level, mnemonic, location, and text) wastes system and network resources.

With duplicate log suppression enabled, the system starts a suppression period upon outputting a log:

· If only duplicate logs are received during the suppression period, the information center does not output the duplicate logs. When the suppression period expires, the information center outputs a log which contains the suppressed log and the number of times the log is suppressed.

· If a different log is received during the suppression period, the information center performs the following operations:

¡ Outputs the suppressed log and the number of times the log is suppressed.

¡ Outputs the different log and starts a suppression period for that log.

Examples

# Enable duplicate log suppression on device A.

· Suppose the IP address of Ten-GigabitEthernet3/0/1 on device A conflicts with the IP address of another device on the network, device A will output the following log information repeatedly:

%Jan 1 07:27:48:636 2000 Sysname ARP/6/DUPIFIP: