HP 830 Series Configuration Manual page 5

Solution ··································································································································································· 49
Configuring DHCP client ··········································································································································· 50
Introduction to DHCP client ··········································································································································· 50
Enabling the DHCP client on an interface ··················································································································· 50
Displaying and maintaining the DHCP client ·············································································································· 50
DHCP client configuration example ····························································································································· 51
Network requirements ··········································································································································· 51
Configuration procedure ······································································································································ 51
Verifying the configuration ··································································································································· 52
Configuring DHCP snooping ····································································································································· 53
Overview ········································································································································································· 53
Application of trusted and untrusted ports ·········································································································· 53
DHCP snooping support for Option 82 ·············································································································· 54
DHCP snooping configuration task list ························································································································ 55
Configuring DHCP snooping basic functions ·············································································································· 55
Configuring DHCP snooping to support Option 82 ··································································································· 56
Configuring DHCP snooping entries backup ·············································································································· 57
Enabling DHCP starvation attack protection ··············································································································· 58
Enabling DHCP-REQUEST message attack protection ······························································································· 58
Displaying and maintaining DHCP snooping ············································································································· 59
DHCP snooping configuration example ······················································································································ 60
Network requirements ··········································································································································· 60
Configuration procedure ······································································································································ 60
DHCP snooping Option 82 support configuration example ····················································································· 60
Network requirements ··········································································································································· 60
Configuration procedure ······································································································································ 61
Configuring BOOTP client ········································································································································· 62
BOOTP application ························································································································································ 62
Obtaining an IP address dynamically ························································································································· 62
Protocols and standards ················································································································································ 62
Configuring an interface to dynamically obtain an IP address through BOOTP ···················································· 63
Displaying and maintaining BOOTP client configuration ·························································································· 63
BOOTP client configuration example ·························································································································· 63
Network requirements ··········································································································································· 63
Configuration procedure ······································································································································ 63
Configuring IPv4 DNS ··············································································································································· 64
Overview ········································································································································································· 64
Static domain name resolution ····························································································································· 64
Dynamic domain name resolution ······················································································································· 64
DNS proxy ····························································································································································· 65
DNS spoofing ························································································································································ 66
Configuring the IPv4 DNS client ·································································································································· 67
Configuring static domain name resolution ········································································································ 67
Configuring dynamic domain name resolution ·································································································· 68
Configuring the DNS proxy ·········································································································································· 69
Configuring DNS spoofing ··········································································································································· 69
Displaying and maintaining IPv4 DNS ························································································································ 69
IPv4 DNS configuration examples ······························································································································· 70
Static domain name resolution configuration example ····················································································· 70
Dynamic domain name resolution configuration example ··············································································· 71
DNS proxy configuration example ······················································································································ 74
Troubleshooting IPv4 DNS configuration ···················································································································· 75
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