HP 3600 v2 Series Configuration Manual page 5

Static IP address assignment configuration example························································································· 53
Dynamic IP address assignment configuration example ··················································································· 55
Self-defined option configuration example ········································································································· 56
Troubleshooting DHCP server configuration ··············································································································· 57
Symptom ································································································································································· 57
Analysis ·································································································································································· 57
Solution ··································································································································································· 57
Configuring DHCP relay agent ································································································································· 58
Overview ········································································································································································· 58
Fundamentals ························································································································································· 58
DHCP relay agent support for Option 82 ·········································································································· 59
DHCP relay agent configuration task list ····················································································································· 60
Enabling DHCP ······························································································································································ 60
Enabling the DHCP relay agent on an interface ········································································································ 60
Correlating a DHCP server group with a relay agent interface················································································ 61
Configuration guidelines ······································································································································ 61
Configuration procedure ······································································································································ 61
Configuring the DHCP relay agent security functions ································································································ 62
Configuring address check ·································································································································· 62
Configuring periodic refresh of dynamic client entries ····················································································· 62
Enabling unauthorized DHCP server detection ·································································································· 63
Enabling DHCP starvation attack protection ······································································································ 63
Enabling offline detection ·············································································································································· 64
Configuring the DHCP relay agent to release an IP address ···················································································· 64
Configuring the DHCP relay agent to support Option 82 ························································································· 65
Configuration prerequisites ·································································································································· 65
Configuration guidelines ······································································································································ 65
Configuration procedure ······································································································································ 65
Setting the DSCP value for DHCP packets ·················································································································· 66
Displaying and maintaining the DHCP relay agent ··································································································· 66
DHCP relay agent configuration examples ················································································································· 67
DHCP relay agent configuration example ·········································································································· 67
DHCP relay agent Option 82 support configuration example ········································································· 68
Troubleshooting DHCP relay agent configuration ······································································································ 69
Symptom ································································································································································· 69
Analysis ·································································································································································· 69
Solution ··································································································································································· 69
Configuring DHCP client ··········································································································································· 70
Configuration restrictions ·············································································································································· 70
Enabling the DHCP client on an interface ··················································································································· 70
Setting the DSCP value for DHCP packets ·················································································································· 70
Displaying and maintaining the DHCP client ·············································································································· 71
DHCP client configuration example ····························································································································· 71
Network requirements ··········································································································································· 71
Configuration procedure ······································································································································ 71
Verifying the configuration ··································································································································· 72
Configuring DHCP snooping ····································································································································· 74
DHCP snooping functions ·············································································································································· 74
Ensuring that DHCP clients obtain IP addresses from authorized DHCP servers ············································ 74
Recording IP-to-MAC mappings of DHCP clients ······························································································· 74
Application environment of trusted ports ····················································································································· 75
Configuring a trusted port connected to a DHCP server ··················································································· 75
Configuring trusted ports in a cascaded network ······································································································ 75
iii