3Com SuperStack 4 Configuration Manual page 312

324 C 12: F S
HAPTER ILE
Logging Function
Introduction to
Info-center
M
YSTEM ANAGEMENT
The Info-center serves as an information center of the system software modules.
The logging system is responsible for most of the information outputs, and it also
makes detailed classification to filter the information efficiently. Coupled with the
debugging program, the info-center provides powerful support for network
administrators and support personnel to monitor the operating state of networks
and diagnose network failures.
When the log information is output to terminal or log buffer, the following parts
will be included:
%Timestamp Sysname Module name/Severity/Digest: Content
For example:
%Jun 7 05:22:03 2003 SW5500 IFNET/6/UPDOWN:Line protocol on
interface GigabitEthernet1/0/2, changed state to UP
When the log information is output to the info-center, the first part will be
" ".
<Priority>
For example:
<187>Jun 7 05:22:03 2003 SW5500 IFNET/6/UPDOWN:Line protocol on
interface GigabitEthernet1/0/2, changed state to UP
The description of the components of log information is as follows:
1 Priority
The priority is computed according to following formula: facility*8+severity-1. The
default value for the facility is 23. The range of severity is 1~8, and the severity will
be introduced in a separate section.
The value of the facility can be set by command
local7 corresponding to 16 to 23 respectively, for detailed information, refer to
RFC3164 (The BSD syslog Protocol).
Priority is only effective when information is send to loghost. There is no character
between priority and timestamp.
2 Timestamp
If the logging information is sent to the log host, the default format of the
timestamp is the date, and it can be changed to
through the command:
info-center timestamp log { date | boot | none }
The date format of timestamp is "
" " is the month field, such as: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct,
mm
Nov, Dec.
" " is the day field, if the day is less than the 10th, one blank should be added,
dd
such as " 7".
" " is the time field, "
hh:mm:ss
59.
" " is the year field.
yyyy
info-center loghost
boot
mm dd hh:mm:ss yyyy
" is from 00 to 23, "
hh
, .local1 to
format or format
none
".
" and " " are from 00 to
mm ss