Acting as the system information hub, information center classifies and manages system information. Together with the debugging functionality, information center offers a powerful support to the network administrators and developers in monitoring network performance and diagnosing network problems.

1.1.2 System Information Format

System information has the following format:

<priority>timestamp sysname module/level/digest:content

& Note:

l The closing set of angel brackets, the space, the forward slash, and the colon are all required in the above format.

l Before the <priority> may have %, “#, or * followed with a space, indicating log, alarm, or debug information respectively.

Below is an example of the format of log information to be output to a log host:

% <188>Sep 28 15:33:46:235 2005 MyDevice SHELL/5/LOGIN: Console login from con0

What follows is a detailed explanation of the fields involved:

I. Priority

The priority is calculated using the following format: facility*8+severity-1, in which facility is local7 by default and the range of severity is 0 to 7. Table 1-2 details the value and meaning associated with each severity.

Note that there is no space between the priority and timestamp fields and that the priority only takes effect when the information has been sent to the log host.

II. Timestamp

Timestamp records the time when system information is generated to allow users check and identify system events.

Note that there is a space between the timestamp and sysname (host name) fields.

III. Sysname

Sysname is the system name of the current host. Users can use the sysname command to modify the sysname.

Note that there is a space between the sysname and module fields.

IV. Module

The module field represents the name of the module that generates system information.

Some modules are shown below:

Table 1-1 Module name list

Module name	Description
8021X	802.1X module
ACL	Access Control List module
ADBM	MAC address management module
ARP	Address Resolution Protocol module
BGP	Border Gateway Protocol module
CFM	Configuration File Management module
CLST	Cluster Configuration module
CMD	Command line module
COMMONSY	Common System MIB module
default	Default setting of all modules
DEV	Device management module
DHCP	Dynamic Host Configuration Protocol module
DIAGCLI	Diagnosis module
DNS	Domain Name System module
DRVMPLS	Multiprotocol label switching driver module
DRVL2	Layer2 driver module
DRVL3	Layer3 driver module
DRVL3MC	Layer3 multicast module
MPLS	Multi protocol Label Switching module
DRVPOS	POS driver module
DRVQACL	QACL driver module
DRVVPLS	Virtual Private LAN Service driver module
ETH	Ethernet module
FTPS	FTP Server module
GARP	Generic Attribute Registration Protocol module
HA	High Availability module
HABP	Huawei Authentication Bypass Protocol module
HGMPS	Huawei Group Management Protocol Service module
HWCM	Huawei Configuration Management MIB module
IFNET	Interface management module
IGSP	IGMP Snooping module
IP	Internet Protocol module
ISIS	Intermediate System-to-Intermediate System intra-domain routing information exchange protocol module
L2INF	Interface management module
L2V	L2 VPN module
LACL	Lan switch ACLmodule
LAGG	Link Aggregation module
LDP	Label Distribution Protocol module
LINE	Line module
LINKAGG	LINK AGG module
LQOS	Lan switch QoS module
LS	Local Server module
LSPAGENT	Label Switched Path Agent module
LSPM	Label Switch Path Management module
MIX	Dual main control network management module
MMC	MMC module
MODEM	MODEM module
MPLSFW	Multi-protocol Label Switch Forward module
MPM	Multicast Port Management module
MSDP	Multicast Source Discovery Protocol module
MSTP	Multiple Spanning Tree Protocol module
NAT	Network Address Translation module
NTP	Network Time Protocol module
PKI	Public Key Infrastructure module
OSPF	Open Shortest Path First module
PHY	Physical Sublayer & Physical Layer module
POE	Power over Ethernet module
POS_SNMP	POS Simple Network Management Protocol module
PPP	Point to Point Protocol module
PSSINIT	PSSINIT module
QoS	Quality of Service module
RDS	Radius module
RM	Routing Management module
RMON	Remote monitor module
RPR	Resilient Packet Ring module
RSA	Revest, Shamir and Adleman module
RTPRO	Routing protocol module
SHELL	User interface module
SNMP	Simple Network Management Protocol module
SOCKET	Socket module
SSH	Secure Shell module
SYSM	System Manage veneer module
SYSMIB	System MIB module
TAC	Terminal Access Controller module
TELNET	Telnet module
UDPH	UDP Helper module
USERLOG	USER Calling Logging module
VFS	Virtual File module
VLAN	Virtual Local Area Network module
VOS	Virtual Operation System module
VRRP	Virtual Router Redundancy Protocol module
VTY	Virtual Type Terminal module

Between “module” and “level” is a “/”.

V. Level (Severity)

System information falls into three categories: log information, debug information, and trap information. Each kind of information can be further divided into eight levels based on its severity, as detailed in Table 1-2. Note that the smaller the severity value, the higher the severity.

Table 1-2 Severity Description

Severity	Severity Value	Description
emergencies	0	The most emergent errors
alerts	1	Errors that demand prompt correction
critical	2	Critical errors
errors	3	Errors that are not critical but demand attention
warnings	4	Warnings that suggest possible errors
notifications	5	Normal errors with important prompts
informational	6	Normal prompts
debugging	7	Debugging prompts

Information filtering by severity works this way: information with severity value greater than the configured threshold will not be output during the filtering.

l If the threshold is set to 0, only information with the severity being emergencies will be output;

l If the threshold is set to 7, information of all severities will be output.

Note that there is a forward slash between the levels (severity) and digest fields.

VI. Digest

The digest field is a string of up to 32 characters, outlining the system information.

Note that there is a colon between the digest and content fields.

VII. Content

This field provides the content of the system information.

1.2 Configuring Information Center

Information center has the following characteristics:

l Supports information output to the console, the monitor, the log host, the trap buffer, the log buffer, and the SNMP agent. A default channel is allocated to each individual output direction, as illustrated in Table 1-3.

l System information is classified into eight categories according to severity and filtered by severity;

l System information is categorized and filtered by source module;

l The output information can be in English or Chinese.

Table 1-3 Information channels for different output directions

Output direction	Information channel No.	Default channel name
Console	0	console
Monitor terminal	1	Monitor
Log host	2	loghost
Trap buffer	3	trapbuffer
Log buffer	4	logbuffer
SNMP NMS	5	snmpagent

& Note:

Configurations for the six output directions function independently and take effect only after the information center has been enabled.

1.2.1 Configuring to Output System Information to the Console

I. Configuring to Output System Information to the Console

Follow these steps to configure to output system information to the console:

To do…	Use the command…	Remarks
Enter system view	system-view	—
Enable information center	info-center enable	Optional Enabled by default
Name the channel with a specified channel number	info-center channel channel-number name channel-name	Optional Refer to Table 1-3 for default channel names
Configure the channel through which system information can be output to the console	info-center console channel { channel-number \| channel-name }	Optional System information is output to the console by default with channel 0 as the default channel
Configure the source of the output information	info-center source { module-name \| default } channel { channel-number \| channel-name } [ debug { level severity \| state state }* \| log { level severity \| state state }* \| trap { level severity \| state state }* ]*	Required
Configure the format of the time stamp	info-center timestamp { log \| trap \| debugging } { boot \| date \| none }	Optional By default, the time stamp for log and trap information is date whereas that for debug information is boot.

II. Enabling the display of system information on the console

After configuring to output system information to the console, you need to enable the associated display function in order to display the output information on the console.

Perform the following configurations in user view to enable the display of system information on the console:

To do…	Use the command…	Remarks
Enable the monitoring of system information on the console	terminal monitor	Optional The monitoring of system information on the console is enabled default and that on the monitoring terminal is disabled.
Enable the display of debug information on the console	terminal debugging	Required Disabled by default
Enable the display of log information on the console	terminal logging	Optional Enabled by default
Enable the display of trap information on the console	terminal trapping	Optional Enabled by default

1.2.2 Configuring to Output System Information to a Monitor Terminal

System information can also be output to a monitor terminal, which is a user terminal that has login connections through the AUX, VTY, or TTY user interface.

I. Configuring to output system information to a monitor terminal

Follow these steps to configure to output system information to a monitor terminal:

To do…	Use the command…	Remarks
Enter system view	system-view	—
Enable information center	info-center enable	Optional Enabled by default
Name the channel with a specified channel number	info-center channel channel-number name channel-name	Optional Refer to Table 1-3 for default channel names
Configure the channel through which system information can be output to a monitor terminal	info-center monitor channel { channel-number \| channel-name }	Optional System information is output to the monitor terminal by default with channel 1 as the default channel
Configure the source of the output information	info-center source { module-name \| default } channel { channel-number \| channel-name } [ debug { level severity \| state state }* \| log { level severity \| state state }* \| trap { level severity \| state state }* ]*	Required
Configure the format of the time stamp	info-center timestamp { log \| trap \| debugging } { boot \| date \| none }	Optional By default, the time stamp for log and trap information is date whereas that for debug information is boot.

II. Enabling the display of system information on a monitor terminal

After configuring to output system information to a monitor terminal, you need to enable the associated display function in order to display the output information on the monitor terminal.

Perform the following configurations to enable the display of system information on a monitor terminal:

To do…	Use the command…	Remarks
Enable the monitoring of system information on a monitor terminal	terminal monitor	Required The monitoring of system information on the console is enabled default and that on the monitoring terminal is disabled
Enable the display of debug information on a monitor terminal	terminal debugging	Required Disabled by default
Enable the display of log information on a monitor terminal	terminal logging	Optional Enabled by default
Enable the display of trap information on a monitor terminal	terminal trapping	Optional Enabled by default

1.2.3 Configuring to Output System Information to a Log Host

Follow these steps to configure to output system information to a log host:

To do…	Use the command…	Remarks
Enter system view	system-view	—
Enable information center	info-center enable	Optional Enabled by default
Name the channel with a specified channel number	info-center channel channel-number name channel-name	Optional Refer to Table 1-3 for default channel names
Specify a log host and configure the parameters when system information is output to the log host	info-center loghost host-ip [ channel { channel-number \| channel-name } ] [ facility local-number ] [ language { chinese \| english } ]	Required Disabled by default with channel 2 as the default channel when enabled
Configure the source interface through which log information can be output to a log host	info-center loghost source interface-type interface-number	Optional By default, no source interface is configured, the system selects an interface as the source interface
Configure the source of the output information	info-center source { modu-name \| default } channel { channel-number \| channel-name } [ debug { level severity \| state state }* \| log { level severity \| state state }* \| trap { level severity \| state state }* ]*	Required
Configure the format of the time stamp for log information	info-center timestamp loghost { date \| no-year-date \| none }	Optional By default, the time stamp for log, information is date

1.2.4 Configuring to Output System Information to the Trap Buffer

Follow these steps to configure to output system information to the trap buffer:

To do…	Use the command…	Remarks
Enter system view	system-view	—
Enable information center	info-center enable	Optional Enabled by default
Name the channel with a specified channel number	info-center channel channel-number name channel-name	Optional Refer to Table 1-3 for default channel names
Configure system information to be output to a trap buffer and configure the associated parameters	info-center trapbuffer [ channel { channel-number \| channel-name } \| size buffersize ] *	Optional System information is output to the trap buffer by default with channel 3 (known as trapbuffer) as the default channel and a default buffer size of 256
Configure the source of the output information	info-center source { module-name \| default } channel { channel-number \| channel-name } [ debug { level severity \| state state }* \| log { level severity \| state state }* \| trap { level severity \| state state }* ]*	Required
Configure the format of the time stamp	info-center timestamp { log \| trap \| debugging } { boot \| date \| none }	Optional By default, the time stamp for log and trap information is date whereas that for debug information is boot.

1.2.5 Configuring to Output System Information to the Log Buffer

Follow these steps to configure to output system information to the log buffer:

To do…	Use the command…	Remarks
Enter system view	system-view	—
Enable information center	info-center enable	Optional Enabled by default
Name the channel with a specified channel number	info-center channel channel-number name channel-name	Optional Refer to Table 1-3 for default channel names
Configure system information to be output to a log buffer and configure the associated parameters	info-center logbuffer [ channel { channel-number \| channel-name } \| size buffersize ]*	Optional System information is output to the log buffer by default with channel 4 (known as logbuffer) as the default channel and a default buffer size of 512.
Configure the source of the output information	info-center source { modu-name \| default } channel { channel-number \| channel-name } [ debug { level severity \| state state }* \| log { level severity \| state state }* \| trap { level severity \| state state }* ]*	Required
Configure the format of the timestamp	info-center timestamp { log \| trap \| debugging } { boot \| date \| none }	Optional By default, the time stamp for log and trap information is date whereas that for debug information is boot.

1.2.6 Configuring to Output System Information to the SNMP NMS

Follow these steps to configure to output system information to the SNMP NMS:

To do…	Use the command…	Remarks
Enter system view	system-view	—
Enable information center	info-center enable	Optional Enabled by default
Name the channel with a specified channel number	info-center channel channel-number name channel-name	Optional Refer to Table 1-3 for default channel names
Configure the channel through which system information can be output to the SNMP NMS	info-center snmp channel { channel-number \| channel-name }	Optional System information is output to the SNMP NMS by default with channel 5 (known as snmpagent) as the default channel
Configure the source of the output information	info-center source { module-name \| default } channel { channel-number \| channel-name } [ debug { level severity \| state state }* \| log { level severity \| state state }* \| trap { level severity \| state state }* ]*	Required
Configure the format of the timestamp	info-center timestamp { log \| trap \| debugging } { boot \| date \| none }	Optional By default, the time stamp for log and trap information is date whereas that for debug information is boot.

& Note:

To ensure that system information can be output to the SNMP NMS, you need to make the necessary configurations on the SNMP agent and the NMS. For detailed information on SNMP, refer to SNMP-RMON.

1.2.7 Configuring Synchronous Information Output

Synchronous information output refers to the feature that if the user’s input is interrupted by system output such as log, trap, or debug information, then after the completion of system output the system will display a command line prompt (in command editing mode a prompt, or a [Y/N] string in interaction mode) and the user’s input so far.

This command is intended for the scenarios when the user’s input is interrupted by a large amount of system output. With this feature enabled, the user can continue their operations from where they were stopped.

Follow these steps to enable synchronous information output:

To do…	Use the command…	Remarks
Enter system view	system-view	—
Enable synchronous information output	info-center synchronous	Required Disabled by default

To do…

Use the command…

Remarks

Enter system view

system-view

—

Enable synchronous information output

info-center synchronous

Required

Disabled by default

& Note:

l If no information is input from the user following the current command line prompt, the system will not display any command line prompt after system information output.

l In the interaction mode, the user is prompted for some information input. If the input is interrupted by system output, no system prompt will be made, rather only the user’s input will be displayed in a new line.

1.3 Displaying and Maintaining Information Center

After the above configurations, you can execute the display command in any view to display the running status of the information center, and thus validate you configurations. You can also execute the reset logbuffer and reset trapbuffer command in user view to clear the information in the log buffer and trap buffer.

Table 1-4 Displaying and Maintaining Information Center

To do…	Use the command…	Remarks
Display channel information for a specified channel	display channel [ channel-number \| channel-name ]	The display command can be executed in any view
Display the configurations for all information channels except channel 6 to 8.	display info-center
Display the state of the log buffer and the log information recorded	display logbuffer [ level severity \| size buffersize ]* [ \| { begin \| exclude \| include } text ]
Display a summary of the log buffer	display logbuffer summary [ level severity ]
Display the state of the trap buffer and the trap information recorded	display trapbuffer [ size buffersize ]
Reset the log buffer	reset logbuffer	The reset command can be executed in user view
Reset the trap buffer	reset trapbuffer	The reset command can be executed in user view

1.4 Information Center Configuration Example

1.4.1 Outputting Log Information to a Unix Log Host

I. Network requirements

l Send log information to a Unix log host;

l The log host has an IP address of 1.2.0.1/16;

l Log information with severity higher than informational will be output to the log host;

l The log information is in English and the source modules are ARP and CMD.

II. Network diagram

Figure 1-1 Network diagram for outputting log information to a Unix log host

III. Configuration Procedure

1) Configuring the device

# Enable information center.

<Sysname> system-view

[Sysname] info-center enable

# Specify the channel to output log information to the log host (loghost by default, optional).

[Sysname] info-center loghost 1.2.0.1 channel loghost

# Disable the output of log, trap, and debug information of all modules to the log host.

[Sysname] info-center source default channel loghost debug state off log state off trap state off

Caution:

As the default system configurations for different channels vary, ensure that the outputting of log, trap, and debug information for the specified channel (loghost in this example) of all modules is disabled before the system information can be output to meet the current network requirements.

Use the display channel command to display the state of a channel.

# Set the host with an IP address of 1.2.0.1/16 to be the log host, set the severity to informational, the output language to English, and the source modules to ARP and CMD.

[Sysname] info-center loghost 1.2.0.1 facility local4 language english

[Sysname] info-center source arp channel loghost log level informational

[Sysname] info-center source cmd channel loghost log level informational

2) Configuring the log host

The following configurations were made on SunOS 4.0 which has similar configurations to the Unix operating systems implemented by other vendors.

Step 1: issue the following commands as a root user.

# mkdir /var/log/H3C

# touch /var/log/H3C/information

Step 2: Edit the file /etc/syslog.conf as a root user and add the following selector/action pair.

# H3C configuration messages

local4.info /var/log/H3C/information

& Note:

Be aware of the following issues while editing the /etc/syslog.conf file:

l Comments must be on a separate line and must begin with the # sign.

l The selector/action pair must be separated with a tab key, rather than a space.

l No redundant spaces are allowed in the file name.

l The device name and the accepted severity of log information specified by the /etc/syslog.conf file must be identical to those configured on the device using the info-center loghost or info-center source command; otherwise the log information may not be output properly to the log host.

Step three: after the log file information has been created and the configuration file /etc/syslog.conf has been modified, ensure that the configuration file /etc/syslog.conf is reread:

# ps -ae | grep syslogd

147

# kill -HUP 147

After the above configurations, system will be able to keep log information in the related file.

1.4.2 Outputting Log Information to a Linux Log Host

I. Network requirements

l Send log information to a Linux log host; the log host has an IP address of 1.2.0.1/16;

l Log information with severity higher than informational will be output to the log host;

l The log information is in English and all modules can output information.

II. Network diagram

Figure 1-2 Network diagram for outputting log information to a Linux log host

III. Configuration Procedure

1) Configuring the device

# Enable information center.

<Sysname> system-view

[Sysname] info-center enable

# Specify the channel to output log information to the log host (optional, loghost by default).

[Sysname] info-center loghost 1.2.0.1 channel loghost

# Disable the output of log, trap, and debug information of all modules to the log host.

[Sysname] info-center source default channel loghost debug state off log state off trap state off

Caution:

As the default system configurations for different channels vary, ensure that the output of log, trap, and debug information for the specified channel (loghost in this example) of all modules is disabled before the system information can be output to meet the current network requirements.

Use the display channel command to display the state of a channel.

# Set the host with an IP address of 1.2.0.1/16 to be the log host, set the severity to informational, the output language to English, and the source modules to be all modules.

[Sysname] info-center loghost 1.2.0.1 facility local7 language english

[Sysname] info-center source default channel loghost log level informational

2) Configuring the log host

Step 1: issue the following commands as a root user.

# mkdir /var/log/H3C

# touch /var/log/H3C/information

Step 2: Edit the file /etc/syslog.conf as a root user and add the following selector/action pair.

# H3C configuration messages

local7.info /var/log/H3C/information

& Note:

Be aware of the following issues while editing the /etc/syslog.conf file:

l Comments must be on a separate line and must begin with the # sign.

l The selector/action pair must be separated with a tab key, rather than a space.

l No redundant spaces are allowed in the file name.

l The facility name and the accepted severity of the log information specified by the /etc/syslog.conf file must be identical to those configured on the device using the info-center loghost or info-center source command; otherwise the log information may not be output properly to the log host.

Step three: after the log file information has been created and the /etc/syslog.conf file has been modified, issue the following commands to display the process ID of syslogd, terminate a syslogd process, and to restart syslogd using the –r option.

# ps -ae | grep syslogd

147

# kill -9 147

# syslogd -r &

& Note:

Ensure that the syslogd process is started with the –r option on a Linux log host.

After the above configurations, system will be able to keep log information in the related file.

1.4.3 Outputting Log Information to the Console

I. Network requirements

l Log information with a severity higher than informational will be output to the console;

l The source modules are ARP and CMD.

II. Network diagram

Figure 1-3 Network diagram for sending log information to the console

III. Configuration Procedure

<Sysname> system-view

[Sysname] info-center enable

# Specify the channel to output log information to the console (optional, console by default).

[Sysname] info-center console channel console

# Disable the output of log, trap, and debug information of all modules to the log host.

[Sysname] info-center source default channel console debug state off log state off trap state off

Caution:

As the default system configurations for different channels vary, ensure that the output of log, trap, and debug information for the specified channel (console in this example) of all modules is disabled before the system information can be output to meet the current network requirements. Use the display channel command to display the state of a channel.

# Enable system information output for the ARP and CMD modules, with information severity ranging from emergencies to informational.

[Sysname] info-center source arp channel console log level informational

[Sysname] info-center source cmd channel console log level informational

[Sysname] quit

# Enable the display of log information on a monitor terminal.

<Sysname> terminal monitor

% Current terminal monitor is on

<Sysname> terminal logging

% Current terminal logging is on

H3C S3610[5510] Series Ethernet Switches Operation Manual-Release 0001-(V1.02)

Chapter 1 Information Center Configuration

1.1 Information Center Overview

I. Priority

II. Timestamp

III. Sysname

IV. Module

V. Level (Severity)

VI. Digest

VII. Content

1.2 Configuring Information Center

I. Configuring to Output System Information to the Console

II. Enabling the display of system information on the console

I. Configuring to output system information to a monitor terminal

II. Enabling the display of system information on a monitor terminal

1.3 Displaying and Maintaining Information Center

1.4 Information Center Configuration Example

I. Network requirements

II. Network diagram

III. Configuration Procedure

I. Network requirements

II. Network diagram

III. Configuration Procedure

I. Network requirements

II. Network diagram

III. Configuration Procedure

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