When configuring information center, go to
these sections for information you are interested in:
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Information Center Overview
l
Configuring Information
Center
l
Displaying and Maintaining
Information Center
l
Information Center Configuration
Examples
1.1 Information Center Overview
Acting as the system information hub,
information center classifies and manages system information. Together with the
debugging functionality, information center offers a powerful support for network
administrators and developers in monitoring network performance and diagnosing
network problems.
By default, the
information center is enabled. An enabled information center affects the system
performance in some degree due to information classification and output. Such
impact becomes more obvious in the event that there is enormous information
waiting for processing.
The information center of the system has
the following features:
I. Classification of system
information
The system is available with three types of
system information:
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Log information
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Trap information
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Debugging information
II. Eight levels of system
information
The information is classified into eight
levels by severity and can be filtered by level. The more emergent the information,
the smaller the severity level.
Table 1-1 Severity description
|
Severity
|
Severity value
|
Description
|
|
emergencies
|
0
|
The system is unavailable.
|
|
alerts
|
1
|
Information that demands prompt reaction
|
|
critical
|
2
|
Critical information
|
|
errors
|
3
|
Error information
|
|
warnings
|
4
|
Warnings
|
|
notifications
|
5
|
Normal errors with important information
|
|
informational
|
6
|
Informational information to be recorded
|
|
debugging
|
7
|
Information generated during debugging
|
Information filtering by severity works
this way: information with the severity value greater than the configured
threshold is not output during the filtering.
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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.
III. Ten channels and seven output
destinations of system information
The system supports seven information output
destinations, including the Console, console terminal (monitor), logbuffer,
loghost, trapbuffer, SNMP and logfile.
The system can support ten channels. The channels
0 through 5, and channel 9 have their default channel names and are associated
with seven output destinations by default. Both the names of the routers and
the associations between the channels and output destinations can be changed
through commands.
Table 1-2 Information channels and output
destinations
|
Information channel number
|
Default channel name
|
Default output destination
|
|
0
|
console
|
Console (Receives
log, trap and debug information)
|
|
1
|
monitor
|
Monitor
terminal (Receives log, trap and debug information, facilitating remote
maintenance)
|
|
2
|
loghost
|
Log host (Receives log, trap and debug
information and information will be stored in files for future retrieval.)
|
|
3
|
trapbuffer
|
Trap buffer (Receives trap information, a
buffer inside the router for recording information.)
|
|
4
|
logbuffer
|
Log buffer (Receives log information, a
buffer inside the router for recording information.)
|
|
5
|
snmpagent
|
SNMP NMS (Receives trap information)
|
|
6
|
Not specified
|
Not specified (Receives log, trap, and
debugging information)
|
|
7
|
Not specified
|
Not specified (Receives log, trap, and
debugging information)
|
|
8
|
Not specified
|
Not specified (Receives log, trap, and
debugging information)
|
|
9
|
channel9
|
Log file (Receives log, trap, and debugging
information)
|
Configurations for
the seven output destinations function independently and take effect only after
the information center is enabled.
IV. Outputting system information
by source module
The system is composed of a variety of
protocol modules, board drivers, and configuration modules. The system information
can be classified, filtered, and output according to source modules. You can
use the info-center source ? command to view the supported information
source modules.
To sum up, the major task of the
information center is to output the three types of information of the modules
onto the ten channels in terms of the eight severity levels and according to
the user’s settings, and then redirect the ten information channels to
the seven output destinations.
1.1.2 System Information Format
System information has the following
format:
<priority>timestamp sysname
module/level/digest:content
l
The closing set of angel brackets < >, the
space, the forward slash /, and the colon are all required, and the percent
sign % is optional in the above format.
l
Before the <priority>, there may be a %,
#, or * followed by a space, indicating log, alarm, or debugging 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
H3C 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 formula: facility*8+severity, in which facility is local7 by default
and the range of severity is 0 to 7. Table 1-1 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 takes effect only when the
information has been sent to the log host.
II. Timestamp
Timestamp records the time when system
information is generated to allow users to check and identify system events.
Note that there is a space between the
timestamp and sysname (host name) fields.
The timestamp is in the format of Mmm dd
hh:mm:ss yyyy, where
l
“Mmm” represents the month, and the
available values are: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov,
and Dec.
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“dd” is the date, which shall follow
a space if less than 10, for example, “ 7”.
l
“hh:mm:ss” is the local time, where
“hh” is in the 24-hour format, ranging from 00 to 23, and both “mm”
and ”ss” range from 00 to 59.
l
“yyyy” is the year.
III. Sysname
Sysname is the system name of the current
host. You can use the sysname command to modify the sysname. (Refer to Basic
System Configuration Commands in the System Volume for details)
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. You can enter the info-center
source ? command in system view to view the module list.
Between “module” and “level”
is a “/”.
V. Level (Severity)
System information can be divided into
eight levels based on its severity, from 0 to 7. Refer to Table 1-1 for
definition and description of these severity levels. 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
1.2.1 Setting
to Output System Information to the Console
I. Setting 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
|
|
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 information source for an
information channel.
|
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
Refer to Table 1-3 for the default output rules
of system information.
|
|
Configure the format of the time stamp
|
info-center timestamp { log | trap | debugging } { boot | date | none
}
|
Optional
The time stamp format for log, trap and
debugging information is date by default.
|
Table 1-3 Default output rules for
different output destinations
|
Output destination
|
Modules allowed
|
LOG
|
TRAP
|
DEBUG
|
|
Enabled/disabled
|
Severity
|
Enabled/disabled
|
Severity
|
Enabled/disabled
|
Severity
|
|
Console
|
default (all modules)
|
Enabled
|
warnings
|
Enabled
|
debugging
|
Enabled
|
debugging
|
|
Monitoring terminal
|
default (all modules)
|
Enabled
|
warnings
|
Enabled
|
debugging
|
Enabled
|
debugging
|
|
Log host
|
default (all modules)
|
Enabled
|
informational
|
Enabled
|
debugging
|
Disabled
|
debugging
|
|
Trap buffer
|
default (all modules)
|
Disabled
|
informational
|
Enabled
|
warnings
|
Disabled
|
debugging
|
|
Log buffer
|
default (all modules)
|
Enabled
|
warnings
|
Disabled
|
debugging
|
Disabled
|
debugging
|
|
SNMP NMS
|
default (all modules)
|
Disabled
|
debugging
|
Enabled
|
warnings
|
Disabled
|
debugging
|
|
Log file
|
default (all modules)
|
Enabled
|
debugging
|
Enabled
|
debugging
|
Disabled
|
debugging
|
II. Enabling the display of system
information on the console
After setting to output system information
to the console, you need to enable the associated display function to display
the output information on the console.
Follow these steps 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
Enabled on the console and disabled on
the monitor terminal by default.
|
|
Enable the display of debugging
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
|
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. Setting 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 1-2 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 information source for an
information channel
|
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 format for log,
trap and debugging information is date.
|
II. Enabling the display of system
information on a monitor terminal
After setting 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.
Follow these steps 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
Enabled on the console and disabled on
the monitor terminal by default.
|
|
Enable the display of debugging
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
|
|
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 1-2 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
] *
|
Required
By default, the system does not output
information to a log host. If you specify to output system information to a
log host, the system uses channel 2 (loghost) by default.
|
|
Configure the source interface through
which log information can be output to a log host
|
info-center loghost source interface-type interface-number
|
Optional
No source interface is configured by
default, and the system selects an interface as the source interface.
|
|
Configure the information source for an
information channel
|
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
for log information
|
info-center timestamp loghost { date | no-year-date | none }
|
Optional
date by
default.
|
|
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 1-2 for default channel names.
|
|
Configure the channel through which
system information can be output to the trap buffer and specify the buffer
size
|
info-center trapbuffer [ channel { channel-number | channel-name
} | size buffersize ] *
|
Optional
System information is output to the trap
buffer by default with a default channel of channel 3 (known as trapbuffer)
and a default buffer size of 256.
|
|
Configure the information source for an
information channel
|
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
The time stamp format for log, trap and
debugging information is date by default.
|
|
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 1-2 for default channel names.
|
|
Configure the channel through which
system information can be output to the log buffer and specify the buffer
size
|
info-center
logbuffer [ channel { channel-number
| channel-name } | size buffersize ] *
|
Optional
System information is output to the log
buffer by default with a default channel of channel 4 (known as logbuffer)
and a default buffer size of 512.
|
|
Configure the information source for an
information channel
|
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
The time stamp format for log, trap and
debugging information is date by default.
|
