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Catalyst 3560 Switch Command Reference
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Chapter 2 Catalyst 3560 Switch Cisco IOS Commands
show ip arp inspection
Usage Guidelines Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output
are not displayed, but the lines that contain Output are displayed.
Examples This is an example of output from the show ip arp inspection interfaces command:
Switch# show ip arp inspection interfaces
Interface Trust State Rate (pps) Burst Interval
--------------- ----------- ---------- --------------
Gi0/1 Untrusted 15 1
Gi0/2 Untrusted 15 1
Gi0/3 Untrusted 15 1
This is an example of output from the show ip arp inspection interfaces interface-id command:
Switch# show ip arp inspection interfaces gigabitethernet0/1
Interface Trust State Rate (pps) Burst Interval
--------------- ----------- ---------- --------------
Gi0/1 Untrusted 15 1
This is an example of output from the show ip arp inspection log command. It shows the contents of
the log buffer before the buffers are cleared:
Switch# show ip arp inspection log
Total Log Buffer Size : 32
Syslog rate : 10 entries per 300 seconds.
Interface Vlan Sender MAC Sender IP Num Pkts Reason Time
---------- ---- -------------- --------------- --------- ----------- ----
Gi0/1 5 0003.0000.d673 192.2.10.4 5 DHCP Deny 19:39:01 UTC
Mon Mar 1 1993
Gi0/1 5 0001.0000.d774 128.1.9.25 6 DHCP Deny 19:39:02 UTC
Mon Mar 1 1993
Gi0/1 5 0001.c940.1111 10.10.10.1 7 DHCP Deny 19:39:03 UTC
Mon Mar 1 1993
Gi0/1 5 0001.c940.1112 10.10.10.2 8 DHCP Deny 19:39:04 UTC
Mon Mar 1 1993
Gi0/1 5 0001.c940.1114 173.1.1.1 10 DHCP Deny 19:39:06 UTC
Mon Mar 1 1993
Gi0/1 5 0001.c940.1115 173.1.1.2 11 DHCP Deny 19:39:07 UTC
Mon Mar 1 1993
Gi0/1 5 0001.c940.1116 173.1.1.3 12 DHCP Deny 19:39:08 UTC
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 Forwarded Dropped DHCP Drops ACL Drops
---- --------- ------- ---------- ---------
5 3 4618 4605 4
2000 0 0 0 0