Enabling Dai On Vlans; Configuring The Dai Interface Trust State - Cisco WS-SUP32-GE-3B - Supervisor Engine 32 Software Configuration Manual

Chapter 35 Configuring Dynamic ARP Inspection

Enabling DAI on VLANs

To enable DAI on VLANs, perform this task:
Command
Step 1
Router# configure terminal
Step 2
Router(config)# ip arp inspection vlan {vlan_ID |
vlan_range}
Router(config)# no ip arp inspection vlan
{vlan_ID | vlan_range}
Step 3
Router(config-if)# do show ip arp inspection vlan
{vlan_ID | vlan_range} | begin Vlan
You can enable DAI on a single VLAN or a range of VLANs:
•
•
•
This example shows how to enable DAI on VLANs 10 through 12:
Router# configure terminal
Router(config)# ip arp inspection vlan 10-12
This example shows another way to enable DAI on VLANs 10 through 12:
Router# configure terminal
Router(config)# ip arp inspection vlan 10,11,12
This example shows how to enable DAI on VLANs 10 through 12 and VLAN 15:
Router# configure terminal
Router(config)# ip arp inspection vlan 10-12,15
This example shows how to verify the configuration:
Router(config)# do show ip arp inspection vlan 10-12,15 | begin Vlan
Vlan
----
10
11
12
15
Vlan
----
10
11
12
15

Configuring the DAI Interface Trust State

The switch does not check ARP packets that it receives from the other switch on the trusted interface. It
simply forwards the packets.
OL-11439-03
To enable a single VLAN, enter a single VLAN number.
To enable a range of VLANs, enter a dash-separated pair of VLAN numbers.
You can enter a comma-separated list of VLAN numbers and dash-separated pairs of VLAN
numbers.
Configuration Operation
-------------
Enabled
Enabled
Enabled
Enabled
ACL Logging
-----------
Deny
Deny
Deny
Deny
Catalyst Supervisor Engine 32 PISA Cisco IOS Software Configuration Guide, Release 12.2ZY
Purpose
Enters global configuration mode.
Enables DAI on VLANs (disabled by default).
Disables DAI on VLANs.
Verifies the configuration.
ACL Match
--------- ---------
Inactive
Inactive
Inactive
Inactive
DHCP Logging
------------
Deny
Deny
Deny
Deny
Configuring DAI
Static ACL
----------
35-7