iiIntroduction to DHCP Accounting··································································································2-23DHCP Accounting Fundamentals··································································································2-23DHCP Accounting Configuration ···································································································2-24Enabling the DHCP Server to Process Option 82 ················································································2-24Displaying and Maintaining the DHCP Server ······················································································2-25DHCP Server Configuration Examples ·································································································2-26DHCP Server Configuration Example ···························································································2-26DHCP Server with Option 184 Support Configuration Example ···················································2-28DHCP Accounting Configuration Example ····················································································2-29Troubleshooting a DHCP Server ··········································································································2-313 DHCP Snooping Configuration ················································································································3-1Introduction ·············································································································································3-1Introduction to DHCP Snooping ······································································································3-1Introduction to DHCP Snooping Trusted/Untrusted Ports·······························································3-1Overview of DHCP-Snooping Option 82 ·························································································3-2Overview of IP Filtering ···················································································································3-4DHCP Snooping Configuration ···············································································································3-5Configuring DHCP Snooping···········································································································3-5Configuring DHCP Snooping Trusted/Untrusted Ports ···································································3-5Configuring DHCP Snooping to Support Option 82 ········································································3-6Configuring IP Filtering ····················································································································3-9Displaying DHCP Snooping Configuration····························································································3-10DHCP Snooping Configuration Example ······························································································3-10DHCP-Snooping Option 82 Support Configuration Example ························································3-10IP Filtering Configuration Example································································································3-114 DHCP Packet Rate Limit Configuration···································································································4-1Introduction to DHCP Packet Rate Limit·································································································4-1Configuring DHCP Packet Rate Limit ·····································································································4-2Configuring DHCP Packet Rate Limit······························································································4-2Rate Limit Configuration Example ··········································································································4-25 DHCP/BOOTP Client Configuration ·········································································································5-1Introduction to DHCP Client····················································································································5-1Introduction to Automatic Configuration··································································································5-1Application Background···················································································································5-1How Automatic Configuration Works·······························································································5-2Introduction to BOOTP Client ·················································································································5-3Configuring a DHCP/BOOTP Client········································································································5-4DHCP Client Configuration Example ······································································································5-5Displaying DHCP/BOOTP Client Configuration······················································································5-5