576 DHCP Snooping and ARP Inspection Commands
FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\CLI Folders\Dell Contax
CLI\files\DHCP_Snooping.fm
DELL CONFIDENTIAL – PRELIMINARY 5/15/12 - FOR PROOF ONLY
Example
The following examples displays the DHCP snooping binding database and
configuration information for all interfaces on a device.
ip arp inspection
Use the ip arp inspection Global Configuration mode command globally to
enable Address Resolution Protocol (ARP) inspection. Use the no form of this
command to disable ARP inspection.
Syntax
ip arp inspection
no ip arp inspection
Default Configuration
ARP inspection is disabled.
Command Mode
Global Configuration mode
User Guidelines
Note that if a port is configured as an untrusted port, then it should also be
configured as an untrusted port for DHCP Snooping, or the IP-address-MAC-
address binding for this port should be configured statically. Otherwise, hosts
that are attached to this port cannot respond to ARPs.
Console#
show ip dhcp snooping binding
Update frequency: 1200
Total number of binding: 2
Mac Address
------------
0060.704C.73
FF
0060.704C.7B
C1
IP Address
----------
10.1.8.1
10.1.8.2
Lease
(sec)
-------
7983
92332
Type
--------
snooping
snooping
(s)
VLAN
----
3
3
Interface
---------
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