Specifications

IP Switching Commands
show cef
ISW-115
Cisco IOS IP Switching Command Reference
May 2008
Usage Guidelines A line card might drop packets because of encapsulation failure, absence of route information, or
absence of adjacency information.
A packet is punted (sent to another switch path) because Cisco Express Forwarding may not support a
specified encapsulation or feature, the packet may be destined for the router, or the packet may have IP
options (such as time stamp and record route). IP options are process switched.
Examples The following example shows how to display Cisco Express Forwarding information for Cisco Express
Forwarding paths:
Router# show cef path
28 allocated IPv4 paths, 0 failed allocations
4 allocated IPv6 paths, 0 failed allocations
32 Total Paths, 587 Recursive Paths, 0 Unresolved Paths
The following example shows how to display Cisco Express Forwarding information for all line cards:
Router# show cef linecard
Slot XDRSent Flags
1 497 up
4 497 up
*2 329 up
VRF Default, version 20, 11 routes
Slot Version I/Fs State Flags
1 0 4 Active sync, table-up
4 0 12 Active sync, table-up
2 0 2 Active sync, table-up
VRF red, version 15, 9 routes
Slot Version I/Fs State Flags
1 0 0 Active sync, table-up
4 0 1 Active sync, table-up
2 0 0 Active sync, table-up
VRF vpn1, version 11, 8 routes
Slot Version I/Fs State Flags
1 0 1 Active sync, table-up
4 0 2 Active sync, table-up
2 0 1 Active sync, table-up
12.2(25)S The drop and not-cef-switched keywords were removed. The accounting,
background, broker, fib, hardware-vectors, idb, loadinfo, memory, non-ip, nsf,
path, and table keywords were added.
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(33)SXH.
Release Modification