Cisco catalyst 3750 Command Reference Manual page 247

Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
The allow-zeros keyword interacts with ARP access control lists (ACLs) in this way:
•
•
The no form of the command disables only the specified checks. If none of the options are enabled, all
checks are disabled.
Examples
This example show how to enable source MAC validation:
Switch(config)# ip arp inspection validate src-mac
You can verify your setting by entering the show ip arp inspection vlan vlan-range privileged EXEC
command.
Related Commands Command
show inventory
vlan-range
OL-8552-07
If you configure an ARP ACL to deny ARP probes, they are dropped even if the allow-zero keyword
is specified.
If you configure an ARP ACL that specifically permits ARP probes and configure the ip arp
inspection validate ip command, ARP probes are dropped unless you enter the allow-zeros
keyword.
Description
vlan Displays the configuration and the operating state of dynamic ARP
inspection for the specified VLAN.
ip arp inspection validate
Catalyst 3750 Switch Command Reference
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