Ip arp inspection – Brocade Communications Systems Brocate Ethernet Access Switch 6910 User Manual
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Brocade 6910 Ethernet Access Switch Configuration Guide
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ARP Inspection
10
ip arp inspection
This command enables ARP Inspection globally on the switch. Use the no form to disable this
function.
Syntax
[no] ip arp inspection
Default Setting
Disabled
Command Mode
Global Configuration
Command Usage
•
When ARP Inspection is enabled globally with this command, it becomes active only on those
VLANs where it has been enabled with the
command.
•
When ARP Inspection is enabled globally and enabled on selected VLANs, all ARP request and
reply packets on those VLANs are redirected to the CPU and their switching is handled by the
ARP Inspection engine.
•
When ARP Inspection is disabled globally, it becomes inactive for all VLANs, including those
where ARP Inspection is enabled.
•
When ARP Inspection is disabled, all ARP request and reply packets bypass the ARP Inspection
engine and their manner of switching matches that of all other packets.
•
Disabling and then re-enabling global ARP Inspection will not affect the ARP Inspection
configuration for any VLANs.
•
When ARP Inspection is disabled globally, it is still possible to configure ARP Inspection for
individual VLANs. These configuration changes will only become active after ARP Inspection is
globally enabled again.
Example
Console(config)#ip arp inspection
Console(config)#
show ip arp inspection
configuration
Displays the global configuration settings for ARP Inspection
PE
show ip arp inspection
interface
Shows the trust status and inspection rate limit for ports
PE
Shows information about entries stored in the log, including the
associated VLAN, port, and address components
PE
show ip arp inspection
statistics
Shows statistics about the number of ARP packets processed, or
dropped for various reasons
PE
Shows configuration setting for VLANs, including ARP Inspection
status, the ARP ACL name, and if the DHCP Snooping database is
used after ACL validation is completed
PE
TABLE 56
ARP Inspection Commands (Continued)
Command
Function
Mode