3Com Baseline 2928 PWR Plus User Manual page 307

1 DHCP Overview··········································································································································1-1
Introduction to DHCP ······························································································································1-1
DHCP Address Allocation ·······················································································································1-1
Allocation Mechanisms····················································································································1-1
Dynamic IP Address Allocation Process ·························································································1-2
IP Address Lease Extension ···········································································································1-3
DHCP Message Format ··························································································································1-3
DHCP Options·········································································································································1-4
DHCP Options Overview ·················································································································1-4
Introduction to DHCP Options ·········································································································1-4
Introduction to Option 82 ·················································································································1-4
Protocols and Standards·························································································································1-5
2 DHCP Relay Agent Configuration ············································································································2-1
Introduction to DHCP Relay Agent ·········································································································2-1
Application Environment··················································································································2-1
Fundamentals··································································································································2-1
DHCP Relay Agent Configuration Task List ···························································································2-2
Enabling DHCP and Configuring Advanced Parameters for the DHCP Relay Agent ····························2-3
Creating a DHCP Server Group··············································································································2-4
Enabling the DHCP Relay Agent on an Interface ···················································································2-5
Configuring and Displaying Clients' IP-to-MAC Bindings ·······································································2-6
DHCP Relay Agent Configuration Example····························································································2-6
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
DHCP Snooping Configuration Task List································································································3-3
Enabling DHCP Snooping·······················································································································3-4
Configuring DHCP Snooping Functions on an Interface ········································································3-5
Displaying Clients' IP-to-MAC Bindings ··································································································3-5
DHCP Snooping Configuration Example ································································································3-6
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