Specifications

IP Switching Commands
clear ip cef epoch
ISW-17
Cisco IOS IP Switching Command Reference
May 2008
clear ip cef epoch
To begin a new epoch and increment the epoch number for one or all Cisco Express Forwarding tables,
use the clear ip cef epoch command in privileged EXEC mode.
clear ip cef epoch [all-vrfs | full | vrf [table]]
Syntax Description
Command Modes Privileged EXEC
Command History
Usage Guidelines Use the clear ip cef epoch command when you want to rebuild a table. This command increments the
epoch number and flushes entries with the old epoch number. This command clears any inconsistencies
that might exist, so if everything in the system is working correctly, this command does not affect the
Cisco Express Forwarding forwarding tables other than changing the current epoch values.
Examples The following example shows the output before and after you clear the epoch table and increment the
epoch number:
Router# show ip cef epoch
CEF epoch information:
Table: Default-table
Table epoch: 2 (43 entries at this epoch)
Adjacency table
Table epoch: 2 (5 entries at this epoch)
Router# clear ip cef epoch full
all-vrfs (Optional) Begins a new epoch for all Forwarding Information Base (FIB)
tables.
full (Optional) Begins a new epoch for all tables, including adjacency tables.
vrf (Optional) Begins a new epoch for the specified FIB table.
table (Optional) Virtual Private Network (VPN) routing and forwarding (VRF)
instance name.
Release Modification
12.2(8)T This command was introduced.
12.2(14)S This command was integrated into Cisco IOS Release 12.2(14)S.
12.2(28)SB This command was integrated into Cisco IOS Release 12.2(28)SB.
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(31)SXH.