Cisco Catalyst 3750 Command Reference Manual page 150

ip arp inspection log-buffer
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.
The log buffer configuration applies to each stack member in a switch stack. Each stack member has the
specified logs number entries and generates system messages at the configured rate. For example, if the
interval (rate) is one entry per second, up to five system messages are generated per second in a
five-member switch stack.
Examples This example shows how to configure the logging buffer to hold up to 45 entries:
Switch(config)# ip arp inspection log-buffer entries 45
This example shows how to configure the logging rate to 20 logs per 4 seconds. With this configuration,
the switch generates system messages for five entries every second while there are entries in the log
buffer.
Switch(config)# ip arp inspection log-buffer logs 20 interval 4
You can verify your settings by entering the show ip arp inspection log privileged EXEC command.
Related Commands Command
arp access-list
clear ip arp inspection log
ip arp inspection vlan logging
show ip arp inspection
Catalyst 3750 Switch Command Reference
2-122
Description
Defines an ARP access control list (ACL).
Clears the dynamic ARP inspection log buffer.
Controls the type of packets that are logged per VLAN.
log Displays the configuration and contents of the dynamic ARP
inspection log buffer.
Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
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