System Log Types

There are five types of logs that can be configured and viewed on the system:

Important

Not all Event Logs can be configured on all products. Configurability depends on the hardware platform and licenses in use.

  • Event: Event logging can be used to determine system status and capture important information pertaining to protocols and tasks in use by the system. This is a global function that will be applied to all contexts, sessions, and processes.

  • Active: Active logs are operator configurable on a CLI instance-by-CLI instance basis. Active logs that are configured by an administrative user in one CLI instance cannot be viewed by an administrative user in a different CLI instance. Each active log can be configured with filter and display properties that are independent of those configured globally for the system. Active logs are displayed in real time as events are generated.

  • Trace: Trace logging can be used to quickly isolate issues that may arise for a particular connected subscriber session. Traces can be taken for a specific call identification (callid) number, IP address, mobile station identification (MSID) number, or username.

  • Monitor: Monitor logging records all activity associated with a particular session. This functionality is available in order to comply with law enforcement agency requirements for monitoring capabilities of particular subscribers. Monitors can be performed based on a subscriber's MSID or username.

  • Crash: Crash logging stores useful information pertaining to system software crashes. This information is useful in determining the cause of the crash.

Important
Stateful Firewall and NAT supports logging of various messages on screen if logging is enabled for firewall. These logs provide detailed messages at various levels, like critical, error, warning, and debug. Stateful Firewall and NAT attack logs also provide information on the source IP address, destination IP address, protocol, or attack type for any packet dropped due to an attack and are also sent to a syslog server if configured in the system. For more information on logging support for Stateful Firewall and NAT, see the Logging Support chapter of PSF Administration Guide or NAT Administration Guide.