
59-4
Module name Description
OSPF Open Shortest Path First module
QoS Quality of Service module
RDS Radius module
RM Routing Management module
RMON Remote monitor module
SHELL User interface module
SNMP Simple Network Management Protocol module
SOCKET Socket module
SSH Secure Shell module
SYSMIB System MIB module
TAC Terminal Access Controller module
TELNET Telnet module
UDPH UDP Helper module
VFS Virtual File System module
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.
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>, 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
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