Understanding Syslog Messages; Syslog Message Format - Cisco 7604 Configuration Manual

Chapter 25 Monitoring the Firewall Services Module
hostname(config)# logging flash-maximum-allocation kbytes
Where kbytes specifies the maximum amount of internal flash memory, in kilobytes, that can be used for
saving log files.
The following example sets the maximum amount of internal flash memory that can be used for log files
to approximately 1.2 MB:
hostname(config)# logging flash-maximum-allocation 1200
Step 2 To specify the minimum amount of internal flash memory that must be free for the FWSM to save a log
file, enter the following command:
hostname(config)# logging flash-minimum-free kbytes
Where kbytes specifies the minimum amount of internal flash memory, in kilobytes, that must be
available before the FWSM saves a new log file.
The following example specifies that the minimum amount of free internal flash memory must be
4000 KB before the FWSM can save a new log file:
hostname(config)# logging flash-minimum-free 4000

Understanding Syslog Messages

This section describes the contents of syslog messages generated by the security appliance. It includes
the following topics:
•
•

Syslog Message Format

Syslog messages begin with a percent sign (%) and are structured as follows:
%FWSM Level Message_number: Message_text
Field descriptions are as follows:
FWSM
Level
Message_number A unique six-digit number that identifies the syslog message.
Message_text
Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM
OL-20748-01
Syslog Message Format, page 25-19
Severity Levels, page 25-20
Identifies the syslog message facility code for messages generated by the security
appliance. This value is always FWSM.
Specifies 1 through 7. The level reflects the severity of the condition described by
the syslog message. The lower the number, the more severe the condition. For more
information, see
A text string describing the condition. This portion of the syslog message
sometimes includes IP addresses, port numbers, or usernames. For a list of variable
fields and their descriptions, see Catalyst 6500 Series Switch and Cisco 7600
Series Router Firewall Services Module System Log Messages.
Table 25-2.
Configuring and Managing Syslog Messages
25-19