An information center is an indispensable
part of Ethernet switches and exists as an information hub of system software
modules. The information center manages most information outputs; it sorts
information carefully, and hence can screen information in an efficient way.
Combined with the debugging program (debugging commands), it provides
powerful support for network administrators and developers in network operation
monitoring and fault diagnosis.
Information items output by S5600 series
switches are presented in the following format:
<priority>timestamp sysname
module/level/digest:content
Here, angle brackets
“<>”, spaces, slashes “/” and colon are the fixed
format of information.
Below is an example of log output to a log
host:
<188>Apr 9 17:28:50:524 2004 H3C
IFNET/5/UPDOWN:Line protocol on the interface Vlan-interface 2 is UP
(SIP=10.5.1.5 ,SP=1080)
The following describes the fields in front
of the content field of an information item:
1)
Priority
The calculation formula for priority is
priority = facility × 8 + severity – 1. For Comware, the default facility
value is 23 and severity ranges from 1 to 8. See Table 1-2 for description of severity levels.
Note that no character is permitted between
the priority and time stamp. The priority takes effect only when the
information is sent to the log host.
2)
Time stamp
The time stamp sent to the log host is in
the format of Mmm dd hh:mm:ss:ms yyyy, where:
“Mmm” represents the month, and
the available values are: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov,
and Dec.
“dd” is the date, which shall
follow a space if less than 10, for example, “ 7”.
“hh:mm:ss:ms” is the local
time, where “hh” is in the 24-hour format, ranging from 00 to 23, both
“mm” and ”ss” range from 00 to 59, “ms” ranges
from 000 to 999.
“yyyy” is the year.
Note that a space separates the time stamp
and the host name.
3)
Host name
It refers to the system name of the host,
which is “H3C” by default.
You can modify the host name with the sysname
command. Refer to System Maintaining and Debugging part of the manual for
detailed operations.
Note that a space separates the host name
and module name.
4)
Module name
It indicates the modules that generate the
information. The module name is in abbreviation form to indicate different
modules. Table 1-1 lists some modules.
Table 1-1 Examples of modules generating the information
|
Module name
|
Description
|
|
8021X
|
802.1x module
|
|
ACL
|
Access control list module
|
|
ADBM
|
Address base module
|
|
AM
|
Access management module
|
|
ARP
|
Address resolution protocol module
|
|
CMD
|
Command line module
|
|
DEV
|
Device management module
|
|
DHCP
|
Dynamic host configuration protocol
module
|
|
DNS
|
Domain name system module
|
|
ETH
|
Ethernet module
|
|
FIB
|
Forwarding module
|
|
FTM
|
Fabric topology management module
|
|
FTMCMD
|
Fabric topology management command
module
|
|
FTPS
|
FTP server module
|
|
HA
|
High availability module
|
|
HABP
|
Huawei authentication bypass protocol
module
|
|
HTTPD
|
HTTP server module
|
|
HWCM
|
Huawei Configuration Management
private MIB module
|
|
HWP
|
HWPing module
|
|
IFNET
|
Interface management module
|
|
IGSP
|
IGMP snooping module
|
|
IP
|
Internet protocol module
|
|
LAGG
|
Link aggregation module
|
|
LINE
|
Terminal line module
|
|
MSTP
|
Multiple spanning tree protocol
module
|
|
MTRACE
|
Multicast traceroute query module
|
|
NAT
|
Network address translation module
|
|
NDP
|
Neighbor discovery protocol module
|
|
NTDP
|
Network topology discovery protocol
module
|
|
NTP
|
Network time protocol module
|
|
OSPF
|
Open shortest path first module
|
|
PKI
|
Public key infrastructure module
|
|
RDS
|
Radius module
|
|
RMON
|
Remote monitor module
|
|
RSA
|
Revest, Shamir and Adleman encryption
module
|
|
SHELL
|
User interface module
|
|
SNMP
|
Simple network management protocol
module
|
|
SOCKET
|
Socket module
|
|
SSH
|
Secure shell module
|
|
SYSMIB
|
System MIB module
|
|
TAC
|
HWTACACS module
|
|
TELNET
|
Telnet module
|
|
TFTPC
|
TFTP client module
|
|
VLAN
|
Virtual local area network module
|
|
VRRP
|
VRRP (virtual router redundancy
protocol) module
|
|
VTY
|
VTY (virtual type terminal) module
|
|
XM
|
Xmodem module
|
|
default
|
Default settings for all the modules
|
Note that a slash (/) separates the module
name and severity level.
5)
Severity
Switch information falls into three
categories: log information, debugging information and trap information. The
information center classifies the information into eight levels by severity or
emergency. The higher the information severity is, the lower the corresponding level
is. For example, the “debugging” severity corresponds to level 8,
and the “emergencies“ severity corresponds to level 1. If filtered
by severity, the information of a severity level greater than the defined
threshold will be filtered out for output. Therefore, when the severity
threshold is set to “debugging”, all information will be output. See
Table 1-2 for description of severities and corresponding levels.
Table 1-2 Severity definitions on the information center
|
Severity
|
Value
|
Description
|
|
emergencies
|
1
|
The system is unavailable.
|
|
alerts
|
2
|
Errors that need to be corrected
immediately
|
|
critical
|
3
|
Critical errors
|
|
errors
|
4
|
Common errors
|
|
warnings
|
5
|
Warnings
|
|
notifications
|
6
|
Normal information that needs to be
noticed
|
|
informational
|
7
|
Normal prompt information
|
|
debugging
|
8
|
Debugging information
|
Note that a slash (/) separates the level
and digest.
6)
Digest
It is a phrase within 32 characters, abstracting
the information contents.
A colon (:) separates the digest and information
contents.
The above section describes
the log information format sent to a log server by a switch. Some log server
software will resolve the received information as well as its format, so that
you may see the log format displayed on the log server is different from the
one described in this manual.
The switch supports information output to
six directions, and the system defaults to assign one information channel for
each output direction, as shown in Table 1-3.
Table 1-3 Information channel names and numbers
|
Output direction
|
Channel number
|
Default channel name
|
|
Console
|
0
|
console
|
|
Monitor
terminal
|
1
|
monitor
|
|
Log host
|
2
|
loghost
|
|
Trap buffer
|
3
|
trapbuffer
|
|
Log buffer
|
4
|
logbuffer
|
|
SNMP
|
5
|
snmpagent
|
Settings for the
six output directions are independent. However, for any output direction, you
must first enable the information center to make all other settings effective.
Information center of the Ethernet switch features:
l
Supporting six information output directions,
namely, console (console), monitor terminal (monitor), log host (loghost), trap
buffer (trapbuffer), log buffer (logbuffer) and SNMP (snmp agent).
l
Filtering information by severities (information
is divided into eight severity levels).
l
Filtering information by modules where information
is generated.
l
Language options (Chinese or English) for
information output to a log host.
To prevent your input from being
interrupted by system information output, you can enable the synchronous
terminal output function, which echoes your input after each system output.
This makes your work with ease, for you no longer worry about losing uncompleted
inputs.
Table 1-4 Enable
synchronous terminal output
|
Operation
|
Command
|
Description
|
|
Enter system view
|
system-view
|
—
|
|
Enable synchronous terminal output
|
info-center synchronous
|
Optional
By default, synchronous terminal
output is disabled.
|
Running the info-center
synchronous command during debugging information collection may result in a
command prompt echoed after each item of debugging information. To avoid
unnecessary output, you are recommended to disable synchronous terminal output
in such cases.
Table 1-5 lists the related configurations on the switch.
Table 1-5 Enable information output to a
log host
|
Operation
|
Command
|
Description
|
|
Enter system view
|
system-view
|
—
|
|
Enable the information center
|
info-center enable
|
Optional
By default, the information center is
enabled.
|
|
Enable information output for a
specified switch in a fabric
|
info-center switch-on { unit unit-id | master | all } [
debugging | logging | trapping ]*
|
By default, debugging information
output is enabled, and log and trap information output are disabled for the
master switch in a fabric. Debugging, log and trap information output are all
disabled for other switches in the fabric.
|
|
Enable information output to a log
host
|
info-center loghost host-ip-addr [
channel { channel-number | channel-name
} | facility local-number | language {
chinese | english } ]*
|
Required
By default, the switch does not
output information to the log host.
After you configure the switch to
output information to the log host, the switch uses information channel 2 by
default.
Be sure to set the correct IP
address. A loopback IP address will cause an error message prompting that
this address is invalid.
|
|
Configure the source interface through
which log information is sent to the log host
|
info-center loghost source interface-type interface-number
|
Optional
|
|
Define an information source
|
info-center
source { modu-name | default } channel
{ channel-number | channel-name } [ { log |
trap | debug } { level severity | state state
} ]*
|
Required
|
|
Set the format of the time stamp to
be sent to the log host
|
info-center timestamp loghost { date | no-year-date | none }
|
Optional
|
Table 1-6 lists the related configurations on the switch.
Table 1-6 Enable information output to
the console
|
Operation
|
Command
|
Description
|
|
Enter system view
|
system-view
|
—
|
|
Enable the information center
|
info-center enable
|
Optional
By default, the information center is
enabled.
|
|
Enable information output to the
console
|
info-center console channel { channel-number | channel-name
}
|
Required
By default, the switch uses
information channel 0 to output log/debugging/trap information to the
console.
|
|
Define an information source
|
info-center
source { modu-name | default } channel
{ channel-number | channel-name } [ { log |
trap | debug } { level severity | state state
} ]*
|
Required
|
|
Set the format of time stamp
|
info-center timestamp { log | trap | debugging } { boot | date
| none }
|
Optional
|
To view log/debugging/trap output information
on the console, you should also enable the corresponding log/debugging/trap information
terminal display on the switch.
For example, to view log information of the
switch on the console, you should not only enable log information output to the
console, but also enable log information terminal display with the terminal
logging command.
Perform the following operations in user
view.
Table 1-7 Enable
debugging/log/trap terminal display
|
Operation
|
Command
|
Description
|
|
Enable the debugging/log/trap information
terminal display function
|
terminal monitor
|
Optional
By default, this function is enabled for
console users.
|
|
Enable debugging information terminal
display function
|
terminal debugging
|
Optional
By default, the debugging information
terminal display is disabled.
|
|
Enable log information terminal
display function
|
terminal logging
|
Optional
By default, log information terminal
display is enabled.
|
|
Enable trap information terminal
display function
|
terminal trapping
|
Optional
By default, trap information terminal
display is enabled
|
Table 1-8 lists the related configurations on the switch.
Table 1-8 Enable information output to a
monitor terminal
|
Operation
|
Command
|
Description
|
|
Enter system view
|
system-view
|
—
|
|
Enable the information center
|
info-center enable
|
Optional
By default, the information center is
enabled.
|
|
Enable information output to Telnet
terminal or dumb terminal
|
info-center monitor channel { channel-number | channel-name }
|
Required
By default, a switch outputs log/debugging/trap
information to user terminal through information channel 1.
|
|
Define an information source
|
info-center
source { modu-name | default } channel
{ channel-number | channel-name } [ { log |
trap | debug } { level severity | state state
} ]*
|
Required
|
|
Set the format of time stamp
|
info-center timestamp { log | trap |
debugging } { boot | date | none }
|
Optional
This is to set the time stamp format
for log/debugging/trap information output.
This determines how the time stamp is
presented to users.
|
l
When there are multiple Telnet users or dumb
terminal users, they share some configuration parameters including module
filter, language and severity level threshold. In this case, change to any such
parameter made by one user will also be reflected on all other user terminals.
l
To view debugging information of specific
modules, you need to set the information type as debug when defining the
information source, and enable debugging for corresponding modules through the debugging
command.
To view the log/debugging/trap output information
on the monitor terminal, you should enable the corresponding log/debugging/trap
display function on the switch.
For example, to view log information of the
switch on a monitor terminal, you need to not only enable log information
output to the monitor terminal, but also enable log information terminal
display function with the terminal logging command.
Perform the following configuration in user
view.
Table 1-9 Enable
debugging/log/trap terminal display
|
Operation
|
Command
|
Description
|
|
Enable the debugging/log/trap information
terminal display function
|
terminal monitor
|
Optional
By default, this function is enabled
for console users.
|
|
Enable debugging information terminal
display function
|
terminal debugging
|
Optional
By default, debugging information terminal
display is disabled.
|
|
Enable log information terminal
display function
|
terminal logging
|
Optional
By default, log information terminal
display is enabled.
|
|
Enable trap information terminal
display function
|
terminal trapping
|
Optional
By default, trap information terminal
display is enabled.
|
Table 1-10 lists the related configurations on the switch.
Table 1-10
Enable information output to the log buffer
|
Operation
|
Command
|
Description
|
|
Enter
system view
|
system-view
|
—
|
|
Enable the information center
|
info-center enable
|
Optional
By default, the information center is
enabled.
|
|
Enable
information output to the log buffer
|
info-center
logbuffer [ channel { channel-number
| channel-name } | size buffersize ]*
|
Optional
By default, the switch uses
information channel 4 to output log information to the log buffer, which can
holds up to 512 items by default.
|
|
Define an information source
|
info-center
source { modu-name | default } channel
{ channel-number | channel-name } [ { log |
trap | debug } { level severity | state state
} ]*
|
Required
|
|
Set the format of time stamp
|
info-center timestamp { log | trap |
debugging } { boot | date | none }
|
Optional
This is to set the time stamp format
for log/debugging/trap information output.
This determines how the time stamp is
presented to users.
|
To view debugging
information of specific modules, you need to configure the information type as debug
in the info-center source command, and enable debugging on
corresponding modules with the debugging command as well.
Table 1-11 lists the related configurations on the switch.
Table 1-11
Enable information output to the trap buffer
|
Operation
|
Command
|
Description
|
|
Enter
system view
|
system-view
|
—
|
|
Enable the information center
|
info-center enable
|
Optional
By default, the information center is
enabled.
|
|
Enable information output to the trap
buffer
|
info-center trapbuffer [channel { channel-number | channel-name
} | size buffersize]*
|
Optional
By default, the switch uses
information channel 3 to output trap information to the trap buffer, which
can holds up to 256 items by default.
|
|
Define an information source
|
info-center
source { modu-name | default } channel
{ channel-number | channel-name } [ { log |
trap | debug } { level severity | state state
} ]*
|
Required
|
|
Set the format of time stamp
|
info-center timestamp { log | trap |
debugging } { boot | date | none }
|
Optional
This is to set the time stamp format
for log/debugging/trap information output.
This determines how the time stamp is
presented to users.
|
To view debugging
information of specific modules, you need to set the information type as debug
in the info-center source command, and enable debugging on
corresponding modules with the debugging command as well.
Table 1-12 lists the related configurations on the switch.
Table 1-12 Enable information output to
the SNMP
|
Operation
|
Command
|
Description
|
|
Enter
system view
|
system-view
|
—
|
|
|
