Command:

show ip cef


Mode:

Switch>


Syntax:

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] [type number] [detail]


Specific FIB Entries Based on Nonrecursive Routes
show ip cef [vrf vrf-name] non-recursive [detail]

 

Syntax Description:

vrf

(Optional) A Virtual Private Network (VPN) routing and forwarding (VRF) instance.

unresolved

(Optional) Displays unresolved FIB entries.

detail

(Optional) Displays detailed FIB entry information.

summary

(Optional) Displays a summary of the FIB.

longer-prefixes

(Optional) Displays FIB entries for more specific destinations.

non-recursive

Displays only nonrecursive routes.

vrf-name

(Optional) Name assigned to the VRF.

network

(Optional) Displays the FIB entry for the specified destination network.

mask

(Optional) Displays the FIB entry for the specified destination network and mask.

type number

(Optional) Interface type and number for which to display FIB entries.

 

Command Description:

To display entries in the forwarding information base (FIB) or to display a summary of the FIB, use the show ip cef command in EXEC mode.

The show ip cef command without any keywords or arguments shows a brief display of all FIB entries.


Example:

The following is sample output from the show ip cef unresolvedcommand:


 


Router#
show ip cef unresolved

IP Distributed CEF with switching (Table Version 136632)

45776 routes, 13 unresolved routes (0 old, 13 new)

45776 leaves, 2868 nodes, 8441480 bytes, 136632 inserts, 90856
invalidations

1 load sharing elements, 208 bytes, 1 references

1 CEF resets, 1 revisions of existing leaves

refcounts: 527292 leaf, 465617 node

148.214.0.0/16, version 136622

0 packets, 0 bytes

  via 171.69.233.56, 0
dependencies, recursive

  unresolved

148.215.0.0/16, version 136623

0 packets, 0 bytes

  via 171.69.233.56, 0
dependencies, recursive

  unresolved

148.218.0.0/16, version 136624

0 packets, 0 bytes


Misconceptions:

None.


Related Commands:

None.


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