3Com S7902E, Руководство по настройке

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Self-Defined Option Configuration Example··················································································2-19
Troubleshooting DHCP Server Configuration ·······················································································2-20
3 DHCP Relay Agent Configuration ············································································································3-1
Introduction to DHCP Relay Agent ·········································································································3-1
Application Environment··················································································································3-1
Fundamentals··································································································································3-1
DHCP Relay Agent Support for Option 82 ······················································································3-2
DHCP Relay Agent Configuration Task List ···························································································3-3
Configuring the DHCP Relay Agent········································································································3-3
Enabling DHCP ·······························································································································3-3
Enabling the DHCP Relay Agent on an Interface ···········································································3-3
Correlating a DHCP Server Group with a Relay Agent Interface····················································3-4
Configuring the DHCP Relay Agent Security Functions ·································································3-5
Configuring the DHCP Relay Agent to Send a DHCP-Release Request ·······································3-6
Configuring the DHCP Relay Agent to Support Option 82······························································3-7
Displaying and Maintaining DHCP Relay Agent Configuration·······························································3-8
DHCP Relay Agent Configuration Examples ··························································································3-9
DHCP Relay Agent Configuration Example ····················································································3-9
DHCP Relay Agent Option 82 Support Configuration Example····················································3-10
Troubleshooting DHCP Relay Agent Configuration··············································································3-11
4 DHCP Client Configuration·······················································································································4-1
Introduction to DHCP Client ····················································································································4-1
Enabling the DHCP Client on an Interface ·····························································································4-1
Displaying and Maintaining the DHCP Client ·························································································4-2
DHCP Client Configuration Example ······································································································4-2
5 DHCP Snooping Configuration ················································································································5-1
DHCP Snooping Overview······················································································································5-1
Functions of DHCP Snooping ·········································································································5-1
Application Environment of Trusted Ports ·······················································································5-2
DHCP Snooping Support for Option 82···························································································5-3
Configuring DHCP Snooping Basic Functions························································································5-4
Configuring DHCP Snooping to Support Option 82················································································5-5
Prerequisites····································································································································5-5
Configuring DHCP Snooping to Support Option 82 ········································································5-5
Displaying and Maintaining DHCP Snooping ·························································································5-7
DHCP Snooping Configuration Examples ······························································································5-8
DHCP Snooping Configuration Example·························································································5-8
DHCP Snooping Option 82 Support Configuration Example ··························································5-8