Specifications

IP Switching Commands
show ip cef
ISW-152
Cisco IOS IP Switching Command Reference
May 2008
show ip cef
To display entries in the Forwarding Information Base (FIB) or to display a summary of the FIB, use the
show ip cef command in user EXEC or privileged EXEC mode.
show ip cef [vrf vrf-name] [unresolved [detail] | [detail | summary]]
Specific FIB Entries Based on IP Address Information
show ip cef [vrf vrf-name] [network [mask]] [longer-prefixes] [detail]
Specific FIB Entries Based on Interface Information
show ip cef [vrf vrf-name] [interface-type interface-number] [detail]
Specific FIB Entries Based on Nonrecursive Routes
show ip cef [vrf vrf-name] non-recursive [detail]
Syntax Description
Command Modes User EXEC
Privileged EXEC
Command History
vrf (Optional) Specifies a Virtual Private Network (VPN) routing and
forwarding (VRF) instance.
vrf-name (Optional) Name assigned to the VRF.
unresolved (Optional) Displays unresolved FIB entries.
detail (Optional) Displays detailed FIB entry information.
summary (Optional) Displays a summary of the FIB.
network (Optional) Network number for which to display a FIB entry.
mask (Optional) Network mask to be used with the specified network
value.
longer-prefixes (Optional) Displays FIB entries for more specific destinations.
interface-type
interface-number
(Optional) Interface type and number for which to display FIB
entries.
non-recursive Displays only nonrecursive routes.
Release Modification
11.2GS This command was introduced for the Cisco 12012 Internet router.
11.1CC Multiple platform support was added.
12.0(5)T The vrf keyword was added.
12.0(17)ST The display of a message indicating support for Border Gateway Protocol
(BGP) policy accounting was added.
12.2(13)T This command was integrated into Cisco IOS Release 12.2(13)T.
12.0(26)S Output display was added for the summary keyword.