iTable of Contents1 ARP Configuration·····································································································································1-1ARP Overview·········································································································································1-1ARP Function ··································································································································1-1ARP Message Format ·····················································································································1-1ARP Operation ································································································································1-2ARP Table ·······································································································································1-3Configuring ARP ·····································································································································1-3Configuring a Static ARP Entry ·······································································································1-3Configuring the Maximum Number of ARP Entries for an Interface ···············································1-4Setting the Aging Time for Dynamic ARP Entries ···········································································1-4Enabling the ARP Entry Check ·······································································································1-5ARP Configuration Example············································································································1-5Configuring Gratuitous ARP····················································································································1-6Introduction to Gratuitous ARP········································································································1-6Configuring Gratuitous ARP ············································································································1-6Displaying and Maintaining ARP·············································································································1-72 ARP Attack Defense Configuration ·········································································································2-1Configuring ARP Active Acknowledgement ····························································································2-1Introduction······································································································································2-1Configuring the ARP Active Acknowledgement Function ·······························································2-1Configuring Source MAC Address Based ARP Attack Detection···························································2-1Introduction······································································································································2-1Configuration Procedure··················································································································2-2Displaying and Maintaining Source MAC Address Based ARP Attack Detection···························2-3Configuring ARP Packet Rate Limit ········································································································2-3Introduction······································································································································2-3Configuring the ARP Packet Rate Limit Function ···········································································2-3Configuring ARP Detection ·····················································································································2-3Introduction to ARP Detection ·········································································································2-3Enabling ARP Detection Based on DHCP Snooping Entries/802.1X Security Entries/StaticIP-to-MAC Bindings ·························································································································2-4Configuring ARP Detection Based on Specified Objects ································································2-6Displaying and Maintaining ARP Detection·····················································································2-7ARP Detection Configuration Example I ·························································································2-7ARP Detection Configuration Example II ························································································2-9Configuring Periodic Sending of Gratuitous ARP Packets ···································································2-10Introduction····································································································································2-10Configuration Procedure················································································································2-10
