R3303-HP HSR6800 Routers Layer 3 - IP Services Configuration Guide
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DHCP overview ·························································································································································· 23
DHCP address allocation ·············································································································································· 23
Allocation mechanisms ········································································································································· 23
Dynamic IP address allocation process··············································································································· 24
IP address lease extension···································································································································· 24
DHCP message format ··················································································································································· 25
DHCP options ································································································································································· 26
Common DHCP options ········································································································································ 26
Custom options ······················································································································································ 26
Protocols and standards ················································································································································ 30
Configuring the DHCP server ···································································································································· 32
Overview ········································································································································································· 32
DHCP address pool ··············································································································································· 32
IP address allocation sequence ···························································································································· 33
DHCP server configuration task list ······························································································································ 33
Configuring an address pool on the DHCP server ····································································································· 34
Configuration task list ··········································································································································· 34
Creating a DHCP address pool ··························································································································· 34
Configuring address allocation mode for a common address pool ································································ 35
Configuring dynamic address allocation for an extended address pool ························································ 37
Configuring a domain name suffix for the client ······························································································· 37
Configuring DNS servers for the client ··············································································································· 38
Configuring WINS servers and NetBIOS node type for the client ·································································· 38
Configuring BIMS server information for the client ···························································································· 39
Configuring gateways for the client ···················································································································· 39
Configuring Option 184 parameters for the client with voice service ···························································· 39
Configuring the TFTP server and bootfile name for the client ··········································································· 40
Specifying a server's IP address for the DHCP client ························································································ 41
Configuring self-defined DHCP options ·············································································································· 41
Enabling DHCP ······························································································································································ 42
Enabling the DHCP server on an interface ·················································································································· 42
Configuration guidelines ······································································································································ 42
Configuration procedure ······································································································································ 43
Applying an extended address pool on an interface ································································································ 43
Configuring the DHCP server security functions ········································································································· 44
Configuration prerequisites ·································································································································· 44
Enabling unauthorized DHCP server detection ·································································································· 44
Configuring IP address conflict detection ··········································································································· 44
Configuring the DHCP server to work with authorized ARP ············································································· 45
Enabling client offline detection ··································································································································· 46
Enabling handling of Option 82 ·································································································································· 46
Configuration prerequisites ·································································································································· 46
Configuration procedure ······································································································································ 46
Specifying the threshold for sending trap messages ·································································································· 47
Configuration prerequisites ·································································································································· 47
Configuration procedure ······································································································································ 47
Displaying and maintaining the DHCP server ············································································································ 47
DHCP server configuration examples ·························································································································· 48
Static IP address assignment configuration example························································································· 48
Dynamic IP address assignment configuration example ··················································································· 49
Self-defined option configuration example ········································································································· 51
Troubleshooting DHCP server configuration ··············································································································· 52
Symptom ································································································································································· 52
Analysis ·································································································································································· 52