Specifications

IP Switching Commands
show ip cef tree
ISW-182
Cisco IOS IP Switching Command Reference
May 2008
Cisco 10000 Series Router Example
The following is sample output from the show ip cef tree command:
Router# show ip cef tree
VRF Default tree information:
MTRIE/MTRIE storing IPv4 addresses
42 entries (42/0 fwd/non-fwd)
Forwarding tree:
Forwarding lookup routine: IPv4 mtrie generic
82 inserts, 40 deletes
8-4-6-6-4-4 stride pattern
short mask protection enabled for <= 4 bits without process suspension
42 leaves (1176 bytes), 76 nodes (15744 bytes)
18576 total bytes
leaf ops: 82 inserts, 40 deletes
leaf ops with short mask protection: 3 inserts, 1 delete
per-prefix length stats: lookup off, insert off, delete off
refcounts: 2933 leaf, 2848 node
node pools:
pool[C/4 bits]: 46 allocated (0 failed), 5472 bytes
pool[C/6 bits]: 29 allocated (0 failed), 9216 bytes
pool[C/8 bits]: 1 allocated (0 failed), 1056 bytes
Non-Forwarding tree:
122 inserts, 122 deletes
8-4-6-6-4-4 stride pattern
short mask protection enabled for <= 4 bits without process suspension
0 leaves (0 bytes), 1 node (1040 bytes)
2696 total bytes
leaf ops: 122 inserts, 122 deletes
leaf ops with short mask protection: 4 inserts, 4 deletes
per-prefix length stats: lookup off, insert off, delete off
refcounts: 0 leaf, 0 node
node pools:
pool[C/4 bits]: 0 allocated (0 failed), 0 bytes
pool[C/6 bits]: 0 allocated (0 failed), 0 bytes
pool[C/8 bits]: 1 allocated (0 failed), 1040 bytes
Table 34 describes the significant fields shown in the display for a Cisco 10000 series router.
Ta b l e 33 show ip cef tree Field Descriptions
Field Description
RTRIE storing IPv6 addresses Indicates the tree type as RTRIE.
6 entries (6/0 fwd/non-fwd) Indicates total number of prefix entries as
6 forwarding and 0 nonforwarding entries.
Forwarding & Non-forwarding tree Same tree is used for forwarding and
nonforwarding.
6 inserts, 0 delete Indicates that 6 entries were inserted and 0 entries
were deleted from the tree.
8 nodes using 288 bytes Indicates a total of 8 nodes using a total of
288 bytes of memory.
*calloc failures: number node This line is not present in the example output.
If this line is present in output, it indicates a
memory allocation error at the indicated node.