9. DHCP Snooping
show ip arp inspection statistics
Displays the statistics for dynamic ARP inspection.
Syntax
show ip arp inspection statistics
Input mode
User mode and administrator mode
Parameters
None
Example
The following figure shows an example of displaying statistics for dynamic ARP inspection.
Figure 9-5: Result of executing the command for displaying the statistics for dynamic ARP
inspection
> show ip arp inspection statistics
Date 2010/04/20 12:00:00 UTC
Port
1/1
1/2
1/3
ChGr:2
>
Display items
Table 9-7: Items displayed for statistics for dynamic ARP inspection
Item
Port
Forwarded
Dropped
DB mismatch
Invalid
Legend n/a: Not applicable
Impact on communication
None
258
Forwarded
Dropped
0
584
883
0
170
Meaning
Port number
Number of forwarded ARP packets
Total number of discarded ARP packets
The number of ARP packets discarded because a
mismatch of the binding database was found through
a basic check
The number of ARP packets discarded because a
mismatch of the binding database was found through
an optional inspection
( DB mismatch
15
(
15
(
883
0
(
0
:
53
(
53
If the interface is gigabitethernet or
tengigabitethernet, the NIF number and
the port number are displayed.
For port-channel, the following value is
displayed:
ChGr:1
n/a
Total number of packets listed in the DB
mismatch and Invalid
n/a
n/a
Invalid
)
0
)
0
)
0
)
0
)
Displayed information
to
ChGr:63