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Table of Contents
1 IP Addressing Configuration····················································································································1-1
IP Addressing Overview··························································································································1-1
IP Address Classes ·························································································································1-1
Special IP Addresses ······················································································································1-2
Subnetting and Masking ··················································································································1-2
Configuring IP Addresses ·······················································································································1-3
Assigning an IP Address to an Interface ·························································································1-3
IP Addressing Configuration Example·····························································································1-4
Displaying and Maintaining IP Addressing ·····························································································1-5
2 ARP Configuration·····································································································································2-1
ARP Overview·········································································································································2-1
ARP Function ··································································································································2-1
ARP Message Format ·····················································································································2-1
ARP Address Resolution Process···································································································2-2
ARP Table ·······································································································································2-3
Configuring ARP ·····································································································································2-3
Configuring a Static ARP Entry ·······································································································2-3
Configuring the Maximum Number of ARP Entries for a Interface ·················································2-4
Setting the Aging Time for Dynamic ARP Entries ···········································································2-4
Enabling the ARP Entry Check ·······································································································2-5
ARP Configuration Example············································································································2-5
Configuring Gratuitous ARP····················································································································2-5
Introduction to Gratuitous ARP········································································································2-5
Configuring Gratuitous ARP ············································································································2-6
Displaying and Maintaining ARP·············································································································2-6
3 Proxy ARP Configuration ·························································································································3-1
Proxy ARP Overview·······························································································································3-1
Proxy ARP ·······································································································································3-1
Local Proxy ARP ·····························································································································3-2
Enabling Proxy ARP································································································································3-2
Displaying and Maintaining Proxy ARP ··································································································3-3
Proxy ARP Configuration Examples ·······································································································3-3
Proxy ARP Configuration Example ·································································································3-3
Local Proxy ARP Configuration Example in Case of Port Isolation ················································3-4
Local Proxy ARP Configuration Example in Isolate-user-vlan ························································3-5
4 ARP Attack Defense Configuration ·········································································································4-1
Configuring ARP Source Suppression····································································································4-1
Introduction to ARP Source Suppression························································································4-1
Configuring ARP Source Suppression ····························································································4-1
Displaying and Maintaining ARP Source Suppression ···································································4-2
Configuring ARP Defense Against IP Packet Attacks ············································································4-2
Introduction to ARP Defense Against IP Packet Attacks ································································4-2
