Ip Arp Inspection Validate - Cisco 300 Series Cli Manual
Small business 300 series managed switches
command line interface guide release 1.3
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Also See for 300 Series:
- Cli manual (1117 pages) ,
- Administration manual (586 pages) ,
- Quick start manual (72 pages)
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42
DHCP Snooping and ARP Inspection Commands
Syntax
ip arp inspection trust
no ip arp inspection trust
Parameters
N/A
Default Configuration
The interface is untrusted.
Command Mode
Interface Configuration (Ethernet, Port-channel) mode
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 gi3 as a trusted interface.
switchxxxxxx(config)#
interface gi3
switchxxxxxx(config-if)#
ip arp inspection trust
42.23 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.
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78-21075-01 Command Line Interface Reference Guide
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