Operation Manual – Information Center
H3C S5500-EI Series Ethernet Switches
Chapter 1 Information Center Configuration
1-5
Module name
Description
VLAN
Virtual Local Area Network module
VOS
Virtual Operating System module
VRRP
Virtual Router Redundancy Protocol module
VTY
Virtual Type Terminal module
To sum up, the major task of the information center is to output the three types of
information of the modules onto the ten channels in terms of the eight severity levels
and according to the user’s settings, and then redirect the system information from ten
channels to the six output destinations.
1.1.2 System Information Format
System information has the following format:
<priority>timestamp sysname module/level/digest:content
Note:
z
The closing set of angel brackets < >, the space, the forward slash /, and the colon
are all required in the above format.
z
Before the <priority>, there may be a %, “#, or * followed with a space, indicating log,
alarm, or debugging information respectively.
z
This format is the standard format of system information. After the system
information is sent to the log host, the displayed format depends on the tools you
use to view the logs.
Below is an example of the format of log information to be output to a log host:
% <188>Sep 28 15:33:46:235 2005 MyDevice SHELL/5/LOGIN: Console login from aux0
What follows is a detailed explanation of the fields involved:
I. Priority
The priority is calculated using the following formula: facility*8+severity, in which facility
represents the logging facility name and can be configured when you set the log host
parameters. The facility ranges from local0 to local7 (16 to 23 in decimal integers) and
defaults to local7. The facility is mainly used to mark different log sources on the log
host, query and filter the logs of the corresponding log source. Severity ranges from 0
to 7.
Table 1-1
details the value and meaning associated with each severity.
Note that there is no space between the priority and timestamp fields and that the
priority takes effect only when the information has been sent to the log host.
