Specifications

IP Switching Commands
ip cef table event-log
ISW-47
Cisco IOS IP Switching Command Reference
May 2008
ip cef table event-log
To control Cisco Express Forwarding (CEF) table event-log characteristics, use the ip cef table
event-log command in global configuration mode.
ip cef table event-log [size event-number] [match ip-prefix mask]
no ip cef table event-log [size event-number] [match ip-prefix mask]
Specific to Virtual Private Network (VPN) Event Log
ip cef table event-log [size event-number] [vrf vrf-name] [match ip-prefix mask]
no ip cef table event-log [size event-number] [vrf vrf-name] [match ip-prefix mask]
Syntax Description
Defaults Default size for event log is 10000 entries.
Command Modes Global configuration
Command History
Usage Guidelines This command is used to troubleshoot inconsistencies that occur in the CEF event log between the routes
in the Routing Information Base (RIB), Route Processor (RP) CEF tables, and line card CEF tables.
The CEF event log collects CEF events as they occur without debugging enabled. This process allows
the tracing of an event immediately after it occurs. Cisco technical personnel may ask for information
from this event log to aid in resolving problems with the CEF feature.
When the CEF table event log has reached its capacity, the oldest event is written over by the newest
event until the event log size is reset using this command or cleared using the clear ip cef event-log
command.
size event-number (Optional) Number of event entries. The range is from 1 to 4294967295.
match (Optional) Log events matching specified prefix and mask.
ip-prefix (Optional) IP prefixes matched, in dotted decimal format (A.B.C.D).
mask (Optional) Network mask written as A.B.C.D.
vrf vrf-name (Optional) Virtual Private Network (VPN) routing/forwarding instance
(VRF) CEF table and VRF name.
Release Modification
12.0(15)S This command was introduced.
12.2(2)T This command was integrated into Cisco IOS Release 12.2(2)T.
12.2(33)SRA This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2SX This command is supported in the Cisco IOS Release 12.2SX train. Support
in a specific 12.2SX release of this train depends on your feature set,
platform, and platform hardware.