Specifications

IP Switching Commands
monitor event-trace (EXEC)
ISW-103
Cisco IOS IP Switching Command Reference
May 2008
Command Default The event trace function is disabled by default.
Command Modes Privileged EXEC
Command History
Usage Guidelines Use the monitor event-trace command to control what, when, and how event trace data is collected. Use
this command after you have configured the event trace functionality on the networking device using the
monitor event-trace command in global configuration mode.
Note The amount of data collected from the trace depends on the trace message size configured using
the monitor event-trace command in global configuration mode for each instance of a trace.
The Cisco IOS software allows for the subsystem components to define whether support for event tracing
is enabled or disabled at boot time. You can enable or disable event tracing in two ways: using the
monitor event-trace command in privileged EXEC mode or using the monitor event-trace command
in global configuration mode. To disable event tracing, you would enter either of these commands with
the disable keyword. To enable event tracing again, you would enter either of these commands with the
enable keyword.
To determine whether you can enable event tracing on a subsystem, use the monitor event-trace ?
command to get a list of software components that support event tracing. To determine whether event
tracing is enabled by default for the subsystem, use the show monitor event-trace command to display
trace messages.
merged (Optional) Dumps the entries in all event traces sorted by time.
l3 Displays information about the Layer 3 trace.
spa Displays information about the Shared Port Adapter (SPA) trace.
interface type mod/port Specifies the interface to be logged.
cancel (Optional) Cancels the continuous display of latest trace entries.
subsys Displays information about the subsystem’s initial trace.
Release Modification
12.0(18)S This command was introduced.
12.2(8)T This command was integrated into Cisco IOS Release 12.2(8)T.
12.2(14)SX Support for this command was introduced on the Supervisor Engine 720.
12.2(25)S This command was integrated into Cisco IOS Release 12.2(25)S.
12.2(28)SB This command was integrated into Cisco IOS Release 12.2(28)SB and
implemented on the Cisco 10000 series routers.
12.2(33)SRA This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH This command was integrated into Cisco IOS Release 12.2(33)SXH.