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 debug program, it provides powerful support for network
administrators and developers in network operation monitoring and fault
diagnosis.
Information items are presented in the following
format:
<priority>timestamp sysname
module/level/digest:content
Here, angle brackets
“<>”, spaces, slashes “/” and colon are valid and
required.
Below is an example of log output to a log
host:
<188>Apr 9 17:28:50 2004 H3C IFNET/5/UPDOWN:Line
protocol on the interface M-Ethernet0/0/0 is UP (SIP=10.5.1.5 ,SP=1080)
The following describes the fields contained
in 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 one to eight. 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 data type of the time stamp field
contained in log information sent to the log host is date, whose format is Mmm dd
hh:mm:ss 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 yyyy” 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, and “yyyy”
is the year.
Note that a space separates the time stamp
and 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 in system view.
Note that a space separates the host name
and module name.
4)
Module name
It indicates the module that generates the
information. Table 1-1 lists the modules.
Table 1-1 Module names
|
Module name
|
Module and description
|
|
8021X
|
802.1x
|
|
ACL
|
Access control list
|
|
ADBM
|
ADress Base Module
|
|
ARP
|
Address resolution protocol
|
|
ARPMIB
|
ARP MIB module
|
|
CFAX
|
Configuration agent
|
|
CFG
|
Configuration management plane
|
|
CFM
|
Configuration file management
|
|
CLST
|
Cluster management
|
|
CMD
|
Command line
|
|
COMMOMSY
|
Common system MIB
|
|
DEV
|
Device management
|
|
DHCC
|
DHCP client
|
|
DRV
|
Driver
|
|
ENTEXMIB
|
Entity extended MIB
|
|
ESP
|
End-station polling
|
|
FIB
|
Forwarding
|
|
FTPS
|
FTP server
|
|
HA
|
High availability
|
|
HABP
|
Huawei authentication bypass protocol
|
|
HTTPD
|
HTTP server
|
|
HWCM
|
Huawei configuration management private
MIB
|
|
IFNET
|
Interface management
|
|
IGSP
|
IGMP snooping
|
|
IP
|
Internet Protocol
|
|
IPC
|
Inter-process communication
|
|
L2INF
|
Layer 2 interface management
|
|
LACL
|
Lanswitch ACL
|
|
LAGG
|
Link aggregation
|
|
LQOS
|
Lanswitch QoS
|
|
LINE
|
Terminal line module
|
|
LS
|
Local server
|
|
MACAUTH
|
Centralized MAC address authentication
|
|
MAM
|
MAC address management
|
|
MPM
|
Multicast port management
|
|
MSTP
|
Multiple spanning tree protocol
|
|
MULTICAS
|
MULTICAS
|
|
NAT
|
Network address translation
|
|
NDP
|
Neighbor discovery protocol
|
|
NTDP
|
Network topology discovery protocol
|
|
NTP
|
Network time protocol
|
|
RDS
|
Radius
|
|
RM
|
Routing management
|
|
RMON
|
Remote monitor
|
|
RMX
|
Route management of IPX
|
|
RSA
|
RSA encryption system (RSA: Revest, Shamir
and Adleman)
|
|
RTPRO
|
Routing protocol
|
|
SC
|
Server control
|
|
SECU
|
Security
|
|
SHELL
|
Shell
|
|
SNMP
|
Simple network management protocol
|
|
SOCKET
|
Socket
|
|
SSH
|
Secure shell
|
|
SYSMIB
|
System management MIB
|
|
TELNET
|
Telnet
|
|
TFTPC
|
TFTP client
|
|
VFS
|
Virtual file system
|
|
VLAN
|
Virtual local area network
|
|
VTY
|
Virtual type terminal
|
|
WCN
|
Web management
|
|
XM
|
Xmodem
|
|
default
|
Default settings of all the modules
|
Note that a slash (/) separates the module
name and severity level.
5)
Level
Switch information falls into three
categories: log information, debug information and trap information.
Information of each category can be one of eight severities. Information
filtering prevents information whose severity is lower than the specified threshold
from being output. 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. 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
|
Debug 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 switch supports information output to
six directions.
By far, each output direction is assigned
with an information channel, 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 (snmpagent),
l
Filtering information by information 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 avoid user’s input from being
interrupted by system information output, you can enable the synchronous
terminal output function, which echoes user's input after each system output.
This makes users work with ease, for they 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 debug
information collection may result in a command prompt echoed after each item of
debug information. To avoid unnecessary output, it is recommended that you
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 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.
Be sure to set the correct IP address. A loopback
IP address will cause an error message prompting invalid address.
|
|
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 debug/log/trap output information
on the console, you should also enable the corresponding debug/log/trap 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 logging terminal display with the terminal logging
command.
Perform the following operations in user
view.
Table 1-7 Enable debug/log/trap terminal display
|
Operation
|
Command
|
Description
|
|
Enable the debug/log/trap terminal
display function
|
terminal monitor
|
Optional
By default, this function is enabled for
console user.
|
|
Enable debug terminal display
|
terminal debugging
|
Optional
By default, debug terminal display is
disabled for terminal users.
|
|
Enable log terminal display
|
terminal logging
|
Optional
By default, log information terminal
display is enabled for console users.
|
|
Enable trap terminal display
|
terminal trapping
|
Optional
By default, trap terminal display is enabled
for terminal users.
|
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/debug/trap information output.
This determines how the time stamp is
presented to users.
|
l
When there are multiple Telnet users or dumb
terminal users, some configuration parameters (including module filter,
language and severity level threshold settings) are shared between them. In
this case, change to any such parameter made by one user will also be reflected
on all other user terminals.
l
To view debug 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.
To view output debug/log/trap information
on the monitor terminal, you should also enable the corresponding
debug/log/trap display 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 terminal
display with the terminal logging command.
Perform the following configuration in user
view.
Table 1-9 Enable debug/log/trap terminal display
|
Operation
|
Command
|
Description
|
|
Enable the debug/log/trap terminal
display function
|
terminal monitor
|
Optional
By default, this function is enabled for
console user.
|
|
Enable debugging terminal display
|
terminal debugging
|
Optional
By default, debugging terminal display is
disabled for terminal users.
|
|
Enable logging terminal display
|
terminal logging
|
Optional
By default, logging terminal display is enabled
for console users.
|
|
Enable trapping terminal display
|
terminal trapping
|
Optional
By default, trapping terminal display is enabled
for terminal users.
|
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/debug/trap information output.
This determines how the time stamp is
presented to users.
|
To view debug
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 1-11 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/debug/trap information output.
This determines how the time stamp is
presented to users.
|
To view debug
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
|
—
|
|
Enable the information center
|
info-center enable
|
Optional
By default, the information center is
enabled.
|
|
Enable information output to the SNMP
|
info-center snmp channel { channel-number | channel-name }
|
Required
By default, the switch outputs trap
information to SNMP through channel 5.
|
|
Define an information source
|
|
