Cisco CCNP SWITCH Simplified by Farai Tafa & Paul Browning

Author:Farai Tafa & Paul Browning [Tafa, Farai]
Language: eng
Format: mobi
Published: 2011-05-21T16:00:00+00:00

The show ip cef adjacency command allows administrators to view specific information on the different types of CEF adjacencies. Table 7-2 below lists and describes some of the following special adjacencies that may be found when CEF is enabled in Cisco IOS software:

Table 7-2. CEF Adjacency Types

The following output illustrates how to verify CEF Glean adjacencies:

VTP-Server-1#show ip cef adjacency glean detail

IP CEF with switching (Table Version 26), flags=0x0

14 routes, 0 reresolve, 0 unresolved (0 old, 0 new), peak 0

14 leaves, 12 nodes, 14608 bytes, 39 inserts, 25 invalidations

0 load sharing elements, 0 bytes, 0 references

universal per-destination load sharing algorithm, id E6B80BFB

3(0) CEF resets, 0 revisions of existing leaves

Resolution Timer: Exponential (currently 1s, peak 1s)

0 in-place/0 aborted modifications refcounts: 3364 leaf, 3328 node

Table epoch: 0 (14 entries at this epoch)

Adjacency Table has 1 adjacency

150.254.0.4/30, version 22, epoch 0, attached, connected

0 packets, 0 bytes

via FastEthernet0/1, 0 dependencies

valid glean adjacency

In the output above, notice that the entry is for the 150.254.0.4/30 subnet, to which the switch FastEthernet0/1 interface is directly connected. This is a valid glean adjacency.

The following output illustrates how to view punted packet statistics, which includes the number of packets punted to the Layer 3 engine for processing and the reason they were punted:

VTP-Server-1#show cef not-cef-switched

CEF Packets passed on to next switching layer

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