Cisco catalyst 3750 Command Reference Manual page 612
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show ip arp inspection
Gi1/0/1
Mon Mar 1 1993
Gi1/0/1
Mon Mar 1 1993
If the log buffer overflows, it means that a log event does not fit into the log buffer, and the display for
the show ip arp inspection log privileged EXEC command is affected. A -- in the display appears in
place of all data except the packet count and the time. No other statistics are provided for the entry. If
you see this entry in the display, increase the number of entries in the log buffer, or increase the logging
rate in the ip arp inspection log-buffer global configuration command.
This is an example of output from the show ip arp inspection statistics command. It shows the statistics
for packets that have been processed by dynamic ARP inspection for all active VLANs.
Switch# show ip arp inspection statistics
Vlan
----
5
2000
Vlan
----
5
2000
Vlan
----
5
2000
For the show ip arp inspection statistics command, the switch increments the number of forwarded
packets for each ARP request and response packet on a trusted dynamic ARP inspection port. The switch
increments the number of ACL or DHCP permitted packets for each packet that is denied by source
MAC, destination MAC, or IP validation checks, and the switch increments the appropriate failure count.
This is an example of output from the show ip arp inspection statistics vlan 5 command. It shows
statistics for packets that have been processed by dynamic ARP for VLAN 5.
Switch# show ip arp inspection statistics vlan 5
Vlan
----
5
Vlan
----
5
Vlan
----
5
Catalyst 3750 Switch Command Reference
2-582
5
0001.c940.1115
5
0001.c940.1116
Forwarded
Dropped
---------
-------
3
0
DHCP Permits
ACL Permits
------------
-----------
0
0
Dest MAC Failures
IP Validation Failures
-----------------
----------------------
0
0
Forwarded
Dropped
---------
-------
3
DHCP Permits
ACL Permits
------------
-----------
0
Dest MAC Failures
IP Validation Failures
-----------------
----------------------
0
Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
173.1.1.2
173.1.1.3
DHCP Drops
----------
4618
4605
0
0
Source MAC Failures
-------------------
12
0
9
0
DHCP Drops
----------
4618
4605
Source MAC Failures
-------------------
12
9
11
DHCP Deny
19:39:07 UTC
12
DHCP Deny
19:39:08 UTC
ACL Drops
---------
4
0
0
0
ACL Drops
---------
4
0
Invalid Protocol Data
---------------------
3
OL-8552-07
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