Dell PowerEdge VRTX - Manual (Page 636)

636 DHCP Snooping Commands
FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\CLI Folders\Dell Plasma-ARC
2+3\new_system_mifs_ARC2_latest\DHCP_Snooping.fm
D E L L C O N F ID E N T IA L – P R E L IM I N A RY 4 / 3 /1 4 - FO R P R O O F O N LY
User Guidelines
The device does not check ARP packets that are received on the trusted
interface; it only forwards the packets.
For untrusted interfaces, the device intercepts all ARP requests and
responses. It verifies that the intercepted packets have valid IP-to-MAC
address bindings before updating the local cache and before forwarding the
packet to the appropriate destination. The device drops invalid packets and
logs them in the log buffer according to the logging configuration specified
with the ip arp inspection log-buffer vlan Global Configuration mode
command.
Example
The following example configures
gi0/
3 as a trusted interface.
console(config)# interface gi0/3
console(config-if)# ip arp inspection trust
ip arp inspection validate
Use the ip arp inspection validate Global Configuration mode command to
perform specific checks for dynamic Address Resolution Protocol (ARP)
inspection. Use the no form of this command to restore the default
configuration.
Syntax
ip arp inspection validate
no ip arp inspection validate
Parameters
N/A
Default Configuration
ARP inspection validation is disabled.
Command Mode
Global Configuration mode