HP A5120 EI Series Configuration Manual page 5

Displaying and maintaining the DHCP relay agent ··································································································· 58
DHCP relay agent configuration examples ················································································································· 59
DHCP relay agent configuration example ·········································································································· 59
DHCP relay agent Option 82 support configuration example········································································· 60
Troubleshooting DHCP relay agent configuration ······································································································ 61
DHCP client configuration ············································································································································· 62
Introduction to DHCP client ··········································································································································· 62
Enabling the DHCP client on an interface ··················································································································· 62
Displaying and maintaining the DHCP client ·············································································································· 62
DHCP client configuration example ····························································································································· 63
DHCP snooping configuration ······································································································································ 65
DHCP snooping overview ············································································································································· 65
Functions of DHCP snooping ······························································································································· 65
Application environment of trusted ports ············································································································ 66
DHCP snooping support for Option 82 ·············································································································· 67
DHCP snooping configuration task list ························································································································ 68
Configuring DHCP snooping basic functions ·············································································································· 68
Configuring DHCP snooping to support Option 82··································································································· 69
Configuring DHCP snooping entries backup ·············································································································· 70
Enabling DHCP starvation attack protection ··············································································································· 71
Enabling DHCP-REQUEST message attack protection ······························································································· 72
Configuring DHCP packet rate limit ····························································································································· 72
Displaying and maintaining DHCP snooping ············································································································· 73
DHCP snooping configuration examples····················································································································· 73
DHCP snooping configuration example ············································································································· 73
DHCP snooping Option 82 support configuration example ············································································ 74
BOOTP client configuration ·········································································································································· 76
Introduction to BOOTP client ········································································································································ 76
BOOTP application ··············································································································································· 76
Obtaining an IP address dynamically ················································································································· 76
Protocols and standards ······································································································································· 76
Configuring an interface to dynamically obtain an IP address through BOOTP ···················································· 77
Displaying and maintaining BOOTP client configuration·························································································· 77
BOOTP client configuration example ·························································································································· 77
IPv4 DNS configuration ················································································································································ 78
DNS overview ································································································································································ 78
Static domain name resolution ···························································································································· 78
Dynamic domain name resolution ······················································································································· 78
DNS proxy ····························································································································································· 79
DNS spoofing ························································································································································ 80
Configuring the IPv4 DNS client ·································································································································· 81
Configuring static domain name resolution········································································································ 81
Configuring dynamic domain name resolution ·································································································· 82
Configuring the DNS proxy ·········································································································································· 83
Configuring DNS spoofing ··········································································································································· 83
Configuration prerequisites ·································································································································· 83
Configuration procedure ······································································································································ 83
Displaying and maintaining IPv4 DNS ························································································································ 83
IPv4 DNS configuration examples ······························································································································· 84
Static domain name resolution configuration example ····················································································· 84
Dynamic domain name resolution configuration example ··············································································· 85
DNS proxy configuration example······················································································································ 88
Troubleshooting IPv4 DNS configuration ···················································································································· 89
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