1-4
Module name Description
NTP Network time protocol module
PKI Public key infrastructure module
RDS Radius module
RMON Remote monitor module
RSA Revest, Shamir and Adleman encryption 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
VLAN Virtual local area network module
VTY Virtual type terminal module
XM XMODEM module
default Default settings for all the modules
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 the ten channels to the six output directions.
System Information Format System information has the following format:
<priority> timestamp sysname module/level/digest:content
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> may have %, “#, or * followed with a space, indicating log, alarm, or debugging
information respectively.
Below is an example of the format of log information to be output to a log host:
% <188>Dec 6 10:44:55:283 2006 device NTP/5/NTP_LOG:- 1 - NTP service enable
(“-1-“ indicates that the unit number of the device is 1.)
What follows is a detailed explanation of the fields involved: