H3C Technologies H3C S5120 Series Switches - Manual (Page 239)

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Table of Contents
1 DHCP Relay Agent Configuration ············································································································1-1
Introduction to DHCP Relay Agent ·········································································································1-1
Application Environment··················································································································1-1
Fundamentals··································································································································1-1
DHCP Relay Agent Support for Option 82 ······················································································1-2
DHCP Relay Agent Configuration Task List ···························································································1-3
Configuring the DHCP Relay Agent········································································································1-3
Enabling DHCP ·······························································································································1-3
Enabling the DHCP Relay Agent on an Interface ···········································································1-3
Correlating a DHCP Server Group with a Relay Agent Interface····················································1-4
Configuring the DHCP Relay Agent Security Functions ·································································1-5
Configuring the DHCP Relay Agent to Send a DHCP-Release Request ·······································1-6
Configuring the DHCP Relay Agent to Support Option 82······························································1-7
Displaying and Maintaining DHCP Relay Agent Configuration·······························································1-8
DHCP Relay Agent Configuration Examples ··························································································1-9
DHCP Relay Agent Configuration Example ····················································································1-9
DHCP Relay Agent Option 82 Support Configuration Example····················································1-10
Troubleshooting DHCP Relay Agent Configuration··············································································1-11
2 DHCP Client Configuration·······················································································································2-1
Introduction to DHCP Client ····················································································································2-1
Enabling the DHCP Client on an Interface ·····························································································2-1
Displaying and Maintaining the DHCP Client ·························································································2-2
DHCP Client Configuration Example ······································································································2-2
3 DHCP Snooping Configuration ················································································································3-1
DHCP Snooping Overview······················································································································3-1
Functions of DHCP Snooping ·········································································································3-1
Application Environment of Trusted Ports ·······················································································3-2
DHCP Snooping Support for Option 82···························································································3-3
Configuring DHCP Snooping Basic Functions························································································3-4
Configuring DHCP Snooping to Support Option 82················································································3-5
Prerequisites····································································································································3-5
Configuring DHCP Snooping to Support Option 82 ········································································3-5
Displaying and Maintaining DHCP Snooping ·························································································3-6
DHCP Snooping Configuration Examples ······························································································3-7
DHCP Snooping Configuration Example·························································································3-7
DHCP Snooping Option 82 Support Configuration Example ··························································3-7
4 BOOTP Client Configuration ····················································································································4-1
Introduction to BOOTP Client ·················································································································4-1
BOOTP Application ·························································································································4-1
Obtaining an IP Address Dynamically ·····························································································4-2
Protocols and Standards ·················································································································4-2
Configuring an Interface to Dynamically Obtain an IP Address Through BOOTP··································4-2