Chapter 9
| General Security Measures
ARP Inspection
– 299 –
ip arp inspection filter
This command specifies an ARP ACL to apply to one or more VLANs. Use the
no
form to remove an ACL binding. Use the
no
form to remove an ACL
binding.
Syntax
ip arp inspection filter
arp-acl-name
vlan
{
vlan-id
|
vlan-range
}
[
static
]
no ip arp inspection filter
arp-acl-name
vlan
{
vlan-id
|
vlan-range
}
arp-acl-name
- Name of an ARP ACL.
(Maximum length: 16 characters)
vlan-id
- VLAN ID. (Range: 1-4094)
vlan-range
- A consecutive range of VLANs indicated by the use a
hyphen, or a random group of VLANs with each entry separated by
a comma.
static
- ARP packets are only validated against the specified ACL,
address bindings in the DHCP snooping database is not checked.
Default Setting
ARP ACLs are not bound to any VLAN
Static mode is not enabled
Command Mode
Global Configuration
Command Usage
◆
ARP ACLs are configured with the commands described on page 10-336.
◆
If static mode is enabled, the switch compares ARP packets to the
specified ARP ACLs. Packets matching an IP-to-MAC address binding in a
permit or deny rule are processed accordingly. Packets not matching any
of the ACL rules are dropped. Address bindings in the DHCP snooping
database are not checked.
◆
If static mode is not enabled, packets are first validated against the
specified ARP ACL. Packets matching a deny rule are dropped. All
remaining packets are validated against the address bindings in the DHCP
snooping database.
Example
Console(config)#ip arp inspection filter sales vlan 1
Console(config)#
