Specifications

IP Switching Commands
show ip cef
ISW-154
Cisco IOS IP Switching Command Reference
May 2008
The following is sample output from the show ip cef summary command:
Router# show ip cef summary
IP Distributed CEF with switching (Table Version 135165)
45788 routes, 0 reresolve, 4 unresolved routes (0 old, 4 new)
45788 leaves, 2868 nodes, 8442864 bytes, 135165 inserts, 89377 invalidations
0 load sharing elements, 0 bytes, 0 references
1 CEF resets, 0 revisions of existing leaves
refcounts: 527870 leaf, 466167 node
For a description of significant fields in this display, see Ta ble 22.
The following is sample output from the show ip cef summary command for Cisco IOS
Release
12.0(26)S and later releases that displays a summary of the IP Cisco Express Forwarding table
information, which includes the percentage of memory used and current alarm status of Cisco Express
Forwarding hardware resources on all E2 and Cisco IP Services Engine (ISE) line cards in a Cisco
12000
series Internet router:
Router# show ip cef summary
IP Distributed CEF with switching (Table Version 2283113), flags=0x0
164413 routes, 0 reresolve, 0 unresolved (0 old, 0 new), peak 3451
2234324 instant recursive resolutions, 0 used background process
304 load sharing elements, 336 references
14758 in-place/0 aborted modifications
36745512 bytes allocated to the FIB table data structures
universal per-destination load sharing algorithm, id B03E8BB3
2(0) CEF resets
Resolution Timer: Exponential (currently 1s, peak 1s)
Tree summary:
8-8-8-8 stride pattern
short mask protection disabled
164413 leaves, 11622 nodes using 16691988 bytes
Transient memory used: 168, max: 865064
Table epoch: 0 (164413 entries at this epoch)
Hardware resource allocation status summary
Green (Normal), Yellow (Caution) Red (Alarm)
Slot HW Resource Name Util Alert
1 E3 Rx PLU 22 G
1 E3_Rx_TLU 6 G
2 E3 Rx PLU 22 G
2 E3_Rx_TLU 6 G
3 E3 Rx PLU 22 G
3 E3_Rx_TLU 6 G
9 E3 Rx PLU 22 G
9 E3_Rx_TLU 6 G
Adjacency Table has 11 adjacencies
Table 23 describes the significant fields shown in the display.
recursive Indicates that the destination is reachable through another route.
unresolved Number of entries that do not have resolved recursions.
Table 22 show ip cef unresolved Field Descriptions (continued)
Field Description