3Com WX3000 operation manual Table of Contents

Table of Contents

1DHCP Overview··········································································································································1-1Introduction to DHCP ······························································································································1-1 DHCP IP Address Assignment ···············································································································1-1 IP Address Assignment Policy ········································································································1-1 Obtaining IP Addresses Dynamically ······························································································1-2 Updating IP Address Lease·············································································································1-3 DHCP Packet Format······························································································································1-3 Protocols and Standards·························································································································1-4

2DHCP Relay Agent Configuration············································································································2-1Introduction to DHCP Relay Agent ·········································································································2-1 Usage of DHCP Relay Agent ··········································································································2-1 DHCP Relay Agent Fundamentals··································································································2-1 DHCP Relay Agent Support for Option 82 ······················································································2-2 Configuring the DHCP Relay Agent········································································································2-4 DHCP Relay Agent Configuration Task List····················································································2-4 Correlating a DHCP Server Group with a Relay Agent Interface····················································2-4 Configuring DHCP Relay Agent Security Functions ·······································································2-5 Configuring the DHCP Relay Agent to Support Option 82······························································2-7 Displaying and Maintaining DHCP Relay Agent Configuration·······························································2-8 DHCP Relay Agent Configuration Example····························································································2-8 Troubleshooting DHCP Relay Agent Configuration················································································2-9

3DHCP Snooping Configuration ················································································································3-1DHCP Snooping Overview······················································································································3-1 Function of DHCP Snooping ···········································································································3-1 Overview of DHCP Snooping Option 82 ·························································································3-2 Overview of IP Filtering ···················································································································3-4 DHCP Snooping Configuration ···············································································································3-5 Configuring DHCP Snooping···········································································································3-5 Configuring DHCP Snooping to Support Option 82 ········································································3-6 Configuring IP Filtering····················································································································3-9 DHCP Snooping Configuration Example ······························································································3-10DHCP-Snooping Option 82 Support Configuration Example························································3-10 IP Filtering Configuration Example································································································3-11

Displaying and Maintaining DHCP Snooping Configuration·································································3-13

4DHCP/BOOTP Client Configuration·········································································································4-1Introduction to DHCP Client····················································································································4-1 Introduction to BOOTP Client ·················································································································4-1 Configuring a DHCP/BOOTP Client········································································································4-1 DHCP Client Configuration Example ······································································································4-2 Displaying and Maintaining DHCP/BOOTP Client Configuration ···························································4-3

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