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Cisco ASA 5500 Series Configuration Guide using ASDM
Chapter76 Configuring Logging
Configuring Logging
Changing the Amount of Internal Flash Memory Available for Logs
To change the amount of internal flash memory available for logs, perform the following steps:
Configuring the Logging Queue
To configure the logging queue, enter the following command:
Path Purpose
Step1 Configuration > Device Management > Logging
> Logging Setup
Specifies the maximum amount of internal flash memory
available for saving log files. By default, the ASA can use up
to 1 MB of internal flash memory for log data. The minimum
amount of internal flash memory that must be free for the ASA
to save log data is 3 MB.
If a log file being saved to internal flash memory would cause
the amount of free internal flash memory to fall below the
configured minimum limit, the ASA deletes the oldest log
files to ensure that the minimum amount of memory remains
free after saving the new log file. If there are no files to delete
or if, after all old files have been deleted, free memory is still
below the limit, the ASA fails to save the new log file.
Step2 Configuration > Device Management > Logging
> Logging Setup
Specifies the minimum amount of internal flash memory that
must be free for the ASA to save a log file.
Path Purpose
Configuration > Device Management > Logging >
Logging Setup
Specifies the number of syslog messages that the ASA can
hold in its queue before sending them to the configured output
destination. The ASAhas a fixed number of blocks in memory
that can be allocated for buffering syslog messages while they
are waiting to be sent to the configured output destination. The
number of blocks required depends on the length of the syslog
message queue and the number of syslog servers specified.
The default queue size is 512 syslog messages. The queue size
is limited only by block memory availability. Valid values are
from 0 to 8192 messages, depending on the platform. If the
logging queue is set to zero, the queue is the maximum
configurable size (8192 messages), depending on the
platform. The maximum queue size by platform is as follows:
•ASA-5505—1024
•ASA-5510—2048
•On all other platforms—8192