Cisco Cisco NAC Appliance 4.1.0
14-16
Cisco NAC Appliance - Clean Access Manager Installation and Administration Guide
OL-12214-01
Chapter 14 Monitoring
Interpreting Event Logs
Event Log Example
explains the following typical Clean Access Server health event example:
CleanAccessServer 2006-04-03 15:07:53 192.168.151.55 System Stats: Load factor 0 (max
since reboot: 9) Mem Total: 261095424 bytes Used: 246120448 bytes Free: 14974976 bytes
Shared: 212992 bytes Buffers: 53051392 bytes Cached: 106442752 bytes CPU User: 0%
Nice: 0% System: 97% Idle: 1%
Table 14-4
Event Column Fields
Value
Description
CleanAccessServer
A Clean Access Server is reporting the event
2006-04-03 15:07:53
Date and time of the event
192.168.151.55
IP address of reporting Clean Access Server
System Stats:
System statistics are generated for each Clean Access Server managed
by the Clean Access Manager every hour by default.
by the Clean Access Manager every hour by default.
Load factor 0
Load factor is a number that describes the number of packets waiting
to be processed by the Clean Access Server (that is, the current load
being handled by the CAS). When the load factor grows, it is an
indication that packets are waiting in the queue to be processed. If the
load factor exceeds 500 for any consistent period of time (e.g. 5
minutes), this indicates that the Clean Access Server has a steady high
load of incoming traffic/packets. You should be concerned if this
number increases to 500 or above.
to be processed by the Clean Access Server (that is, the current load
being handled by the CAS). When the load factor grows, it is an
indication that packets are waiting in the queue to be processed. If the
load factor exceeds 500 for any consistent period of time (e.g. 5
minutes), this indicates that the Clean Access Server has a steady high
load of incoming traffic/packets. You should be concerned if this
number increases to 500 or above.
(max since reboot: <n>)
The maximum number of packets in the queue at any one time (i.e. the
maximum load handled by the Clean Access Server).
maximum load handled by the Clean Access Server).
Mem Total: 261095424 bytes
These are the memory usage statistics. There are 6 numbers shown
here: total memory, used memory, free memory, shared memory,
buffer memory, and cached memory.
here: total memory, used memory, free memory, shared memory,
buffer memory, and cached memory.
Used: 246120448 bytes
Free: 14974976 bytes
Shared: 212992 bytes
Buffers: 53051392 bytes
Cached: 106442752 bytes
CPU User: 0%
These numbers indicate CPU processor load on the hardware, in
percentages. These four numbers indicate time spent by the system in
user, nice, system, and idle processes.
percentages. These four numbers indicate time spent by the system in
user, nice, system, and idle processes.
Note
Time spent by the CPU in system process is typically < 90%
on a Clean Access Server. This indicates a healthy system.
on a Clean Access Server. This indicates a healthy system.
Nice: 0%
System: 97%
Idle: 1%