H3C S5120-SI Series Configuration Manual page 9

ARP detection configuration example II ·············································································································· 27
Configuring periodic sending of gratuitous ARP packets ·························································································· 28
Introduction ···························································································································································· 28
Configuration procedure ······································································································································ 28
IP addressing configuration ······································································································································· 30
IP addressing overview ·················································································································································· 30
IP address classes ·················································································································································· 30
Special IP addresses ············································································································································· 31
Subnetting and masking ······································································································································· 31
Configuring IP addresses ·············································································································································· 32
Assigning an IP address to an interface ············································································································· 32
Displaying and maintaining IP addressing ················································································································· 32
DHCP relay agent configuration ······························································································································· 33
Introduction to DHCP relay agent ································································································································ 33
Application environment ······································································································································· 33
Fundamentals ························································································································································· 33
DHCP relay agent support for Option 82 ·········································································································· 34
Configuring the DHCP relay agent ······························································································································ 35
Enabling DHCP ······················································································································································ 35
Enabling DHCP relay agent on an interface ······································································································ 35
Correlating a DHCP server group with a relay agent interface ······································································· 36
Configuring the DHCP relay agent security functions ······················································································· 36
Using the DHCP relay agent to send a DHCP-release request ········································································· 38
Configuring the DHCP relay agent to support Option 82 ················································································ 39
Displaying and maintaining DHCP relay agent configuration ·················································································· 40
DHCP relay agent configuration examples ················································································································· 40
DHCP relay agent configuration example ·········································································································· 40
DHCP relay agent Option 82 support configuration example ········································································· 42
Troubleshooting DHCP relay agent configuration ······································································································ 42
DHCP client configuration ········································································································································· 44
Introduction to DHCP client ··········································································································································· 44
Enabling the DHCP client on an interface ··················································································································· 44
Displaying and maintaining the DHCP client ·············································································································· 45
DHCP client configuration example ····························································································································· 45
DHCP snooping configuration ·································································································································· 46
DHCP snooping overview ············································································································································· 46
Function of DHCP snooping ································································································································· 46
Application environment of trusted ports ············································································································ 47
DHCP snooping support for Option 82 ·············································································································· 48
Configuring DHCP snooping basic functions ·············································································································· 49
Configuring DHCP snooping to support Option 82 ··································································································· 50
Prerequisites ··························································································································································· 50
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