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 S3100-52P
switch is 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 M-Ethernet0/0/0 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 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 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, and “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 all the 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
|
|
CFAX
|
Configuration agent module
|
|
CFG
|
Configuration management plane module
|
|
CFM
|
Configuration file management module
|
|
CLST
|
Cluster management module
|
|
CMD
|
Command line module
|
|
COMMONSY
|
Common system MIB module
|
|
DEV
|
Device management module
|
|
DHCC
|
DHCP client module
|
|
DHCP
|
Dynamic host configuration protocol
module
|
|
DHCPS
|
DHCP server module
|
|
DLDP
|
Device link detection protocol module
|
|
DNS
|
Domain name system module
|
|
DRV
|
Driver module
|
|
DRV_MNT
|
Driver management module
|
|
DTCT
|
IP network auto-detect module
|
|
ENTEXMIB
|
Entity extended MIB module
|
|
ESP
|
End-station polling 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
|
|
IPC
|
Inter-process communication module
|
|
IPMC
|
IP multicast module
|
|
L2INF
|
Layer 2 interface management module
|
|
L4RDT
|
Layer 4 redirect module
|
|
LACL
|
Lanswitch access control list module
|
|
LAGG
|
Link aggregation module
|
|
LINE
|
Terminal line module
|
|
LQOS
|
Lanswitch quality of service module
|
|
LS
|
Local server module
|
|
MACAUTH
|
Centralized MAC authentication module
|
|
MPM
|
Multicast port management module
|
|
MSDP
|
Multicast source discovery protocol
module
|
|
MSTP
|
Multiple spanning tree protocol module
|
|
MTRACE
|
Multicast traceroute query module
|
|
MULTICAS
|
MULTICAS 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
|
|
POE
|
Power over Ethernet module
|
|
PORTSEC
|
Port Security module
|
|
PPRDT
|
Protocol packet redirect module
|
|
PTVL
|
VLAN (Port VLAN) module
|
|
QACL
|
Quality of service / access control list module
|
|
QOSF
|
Traffic management module
|
|
RDS
|
Radius module
|
|
RESIL
|
Resilient ARP module
|
|
RM
|
Routing management module
|
|
RMON
|
Remote monitor module
|
|
RSA
|
Revest, Shamir and Adleman encryption
module
|
|
RTPRO
|
Routing protocol module
|
|
SC
|
Server control 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
|
|
UDPH
|
UDP helper module
|
|
VFS
|
Virtual file system module
|
|
VLAN
|
Virtual local area network module
|
|
VRRP
|
VRRP (virtual router redundancy protocol)
module
|
|
VTY
|
VTY (virtual type terminal) module
|
|
WCN
|
Web management 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 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 debugging/log/trap output information
on the console, you should also enable the corresponding debugging/log/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 for terminal users.
|
|
Enable log information terminal display
function
|
terminal logging
|
Optional
By default, log information terminal
display is enabled for console users.
|
|
Enable trap information terminal display
function
|
terminal trapping
|
Optional
By default, trap information 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/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 debugging/log/trap output information
on the monitor terminal, you should enable the corresponding debugging/log/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 user.
|
|
Enable debugging information terminal
display function
|
terminal debugging
|
Optional
By default, debugging information terminal
display is disabled for terminal users.
|
|
Enable log information terminal display
function
|
terminal logging
|
Optional
By default, log information terminal
display is enabled for console users.
|
|
Enable trap information terminal display
function
|
terminal trapping
|
Optional
By default, trap information 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
|
|
