Specifications

IP Switching Commands
show cef drop
ISW-118
Cisco IOS IP Switching Command Reference
May 2008
Examples The following is sample output from the show cef drop command:
Router# show cef drop
CEF Drop Statistics
Slot Encap_fail Unresolved Unsupported No_route No_adj ChksumErr
RP 4 89 0 4 0 0
1 0 0 0 0 0 0
2 0 0 5 0 0 5
IPv6 CEF Drop Statistics
Slot Encap_fail Unresolved Unsupported No_route No_adj
RP 2 33 0 2 0
1 0 0 3 0 0
2 0 0 0 0 0
Table 10 describes the significant fields shown in the display.
Related Commands
Ta b l e 10 show cef drop Field Descriptions
Field Description
Slot The slot number on which the packets were received.
Encap_fail Indicates the number of packets dropped after exceeding the limit for
packets punted to the processor due to missing adjacency information
(CEF
throttles packets passed up to the process level at a rate of one
packet every two seconds).
Unresolved Indicates the number of packets dropped due to an unresolved prefix
in the Forwarding Information Base (FIB) table.
Unsupported Indicates the number of packets fast-dropped by CEF
(drop
adjacency).
No_route Indicates the number of packets dropped due to a missing prefix in
the FIB table.
No_adj Indicates the number of packets dropped due to incomplete
adjacency.
ChksumErr Indicates the number of IPv4 packets received with a checksum error.
Note This field is not supported for IPv6 packets.
Command Description
show cef interface Displays CEF-related interface information.
show ipv6 cef Displays entries in the IPv6 FIB.