IP CEF Cisco

3560 Switch platform

CEF

• show ip cef 0.0.0.0 0.0.0.0 internal

SW1#<input>show cef fib</input>
119 allocated IPv4 entries, 0 failed allocations

SW1#<input>show ip cef switching statistics</input>

       Reason                          Drop       Punt  Punt2Host
RP RIB Packet destined for us             0    1412459          0
RP RIB Total                              0    1412459          0

RP LES No adjacency                    6399          0     100446
RP LES TTL expired                        0          0         36
RP LES Total                           6399          0     100482

All    Total                           6399    1412459     100482

SW1#<input>show ip cef vrf * summary</input>
IPv4 CEF is enabled for distributed and running
VRF Default:
 130 prefixes (130/0 fwd/non-fwd)
 Default network 0.0.0.0/0
 Table id 0, 0 resets
 Database epoch: 1 (130 entries at this epoch)

Heimdal#<input>sh ip cef</input>
Prefix               Next Hop             Interface
0.0.0.0/0            172.16.4.1
0.0.0.0/32           receive
172.16.4.0/24        attached             Vlan1
172.16.4.0/32        receive
172.16.4.1/32        attached             Vlan1
172.16.4.5/32        attached             Vlan1
172.16.4.15/32       attached             Vlan1
172.16.4.16/32       attached             Vlan1
172.16.4.20/32       receive
172.16.4.22/32       attached             Vlan1
172.16.4.233/32      attached             Vlan1
172.16.4.254/32      attached             Vlan1
172.16.4.255/32      receive
192.168.22.0/24      172.16.4.16
192.168.128.0/24     attached             Vlan10
192.168.128.0/32     receive
192.168.128.1/32     receive
192.168.128.255/32   receive
192.168.130.0/24     attached             Vlan12
192.168.130.0/32     receive
192.168.130.1/32     receive
192.168.130.126/32   attached             Vlan12
192.168.138.149/32   attached             Vlan20
192.168.138.255/32   receive
192.168.140.0/24     attached             Vlan22
<notice>...OUTPUT OMITTED...</notice>

Adjacency table

SW1#<input>show adjacency</input>
Protocol Interface                 Address
IP       Vlan1                     172.16.4.5(7)
IP       Vlan1                     stella.tekkom.dk(7)
IP       Vlan1                     mars(9)
IP       Vlan1                     172.16.4.50(9)
IP       Vlan1                     172.16.4.60(9)
IP       Vlan1                     172.16.4.66(7)
IP       Vlan12                    192.168.130.126(7)
IP       Vlan12                    hot-pc-gf.tekkom.local(7)
IP       Vlan28                    192.168.146.145(7)
IP       Vlan28                    192.168.146.146(7)
IP       Vlan28                    192.168.146.149(7)
IP       Vlan28                    192.168.146.150(7)
IP       Vlan28                    192.168.146.151(7)

Looking at details

SW1#<input>show adjacency 172.16.4.16 detail</input>
Protocol Interface                 Address
IP       Vlan1                     mars(9)
                                   0 packets, 0 bytes
                                   epoch 0
                                   sourced in sev-epoch 4874
                                   Encap length 14
                                   <notice>0007E9400ABF</notice>0019E75108C00800
                                   ARP
SW1#<input>sh arp | inc 172.16.4.16</input>
Internet  172.16.4.16             1   <notice>0007.e940.0abf</notice>  ARPA   Vlan1

Links

• See [1]