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 S7500 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
M-Ethernet0/0/0 is UP (SIP=10.5.1.5 ,SP=1080)
The following describes
the fields 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 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”
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.
“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. 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 gives
examples of the modules.
Table 1-1 Examples of modules generating the information
|
Module name
|
Description
|
|
8021X
|
802.1x module
|
|
ACCOUNT
|
L3+ real-time
accounting module
|
|
ACL
|
Access control list
module
|
|
ADBM
|
Address base module
|
|
AM_USERB
|
Access management
module
|
|
ARP
|
Address resolution
protocol module
|
|
BGP
|
Border gateway
protocol module
|
|
CFM
|
Configuration file
management module
|
|
CLNP
|
Connectionless
network protocol module
|
|
CLNSECHO
|
Connectionless
network protocol echo 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
|
|
DHCPSNP
|
DHCP snooping module
|
|
DLDP
|
Device link detection
protocol module
|
|
DNS
|
Domain name system
module
|
|
ENTEXMIB
|
Entity extended MIB
module
|
|
ENTITY
|
Entity module
|
|
ESIS
|
End system to
intermediate system routing protocol module
|
|
ETH
|
Ethernet module
|
|
FIB
|
Forwarding 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
|
|
IPX
|
IPX protocol module
|
|
ISIS
|
Intermediate
system-to-intermediate system intra-domain routing information exchange
protocol module
|
|
L2INF
|
Layer 2 interface
management module
|
|
LACL
|
Lanswitch access control
list module
|
|
LARP
|
Address Resolution
protocol module
|
|
LETH
|
Ethernet debugging
module
|
|
LINKAGG
|
Link aggregation
module
|
|
LQOS
|
Lanswitch quality of
service module
|
|
LS
|
Local server module
|
|
MIX
|
Dual main control network
management protocol
|
|
MODEM
|
MODEM module
|
|
MPM
|
Multicast port
management module
|
|
MSDP
|
Multicast source
discovery protocol module
|
|
MSTP
|
Multiple spanning
tree protocol module
|
|
NAT
|
Network address
translation module
|
|
NDP
|
Neighbor discovery
protocol module
|
|
NETSTREA
|
Traffic statistic
module
|
|
NTDP
|
Network topology
discovery protocol module
|
|
NTP
|
Network time protocol
module
|
|
OSPF
|
Open shortest path
first module
|
|
RDS
|
Radius module
|
|
RM
|
Routing management
module
|
|
RMON
|
Remote monitor module
|
|
RMX
|
IPX routing module
|
|
RRPP
|
Rapid ring protection
protocol module
|
|
RSA
|
Revest, Shamir and
Adleman encryption module
|
|
RTA
|
L3+ plug-in card
traffic accounting module
|
|
RTPRO
|
Routing protocol
module
|
|
RXTX
|
Lower layer packets
receiving and transmitting module
|
|
SC
|
Server control module
|
|
SHELL
|
User interface module
|
|
SNMP
|
Simple network
management protocol module
|
|
SOCKET
|
Socket module
|
|
SSH
|
Secure shell module
|
|
SYSM
|
System management
module
|
|
SYSMIB
|
System MIB module
|
|
TAC
|
Terminal access
controller module
|
|
TELNET
|
Telnet module
|
|
TFTPC
|
TFTP client module
|
|
TUNNEL
|
Packets transparent
transmission module
|
|
UDPH
|
UDP helper module
|
|
USERLOG
|
User log 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
|
|
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.
7)
Information text
Information text
contains the detail of system information.
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 function 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
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 a log host.
Table 1-4 lists the related configurations
on the switch.
Table 1-4 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 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
|
info-center timestamp { log | trap | debugging } { boot
| date | none }
|
Optional
|
Table 1-5 lists the related
configurations on the switch.
Table 1-5 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 1-6 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, 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 1-7 lists the related
configurations on the switch.
Table 1-7 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, 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 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 as well.
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 1-8 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.
|
